Author Topic: Sierra Space LEO Space station  (Read 120122 times)

Offline FutureSpaceTourist

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Sierra Space LEO Space station
« on: 03/31/2021 07:23 pm »
https://www.sncorp.com/press-releases/snc-details-for-leo-commercialization-and-commercial-space-station

Quote
OZMENS’ SNC ANNOUNCES DETAILS FOR COMMERCIAL SPACE STATION AND LEO COMMERCIALIZATION

Crewed Dream Chaser Spaceplane to Shuttle Private Astronauts

SPARKS, Nev., March 31, 2021 – Sierra Nevada Corporation (SNC), the global aerospace and national security company owned by Eren and Fatih Ozmen, outlined development plans for its low-Earth orbit (LEO) space station – leveraging its transportation and destination technologies – releasing new images, details and video of the unique concept in support of LEO commercialization.

The space station is a configuration of multiple large inflatable LIFE™ habitats that can be serviced by both cargo and crew carrying Dream Chaser® spaceplanes.

“There is no scalable space travel industry without a spaceplane,” said SNC’s Chairwoman and owner Eren Ozmen. “Dream Chaser and its runway landing offer the scalable, preferred solution for humans and science in support of a vibrant LEO economy.”

SNC also released that a crewed Dream Chaser will be able to shuttle private astronauts and to serve as the only vehicle capable of rescuing astronauts from space destinations and returning them to Earth via a safe and speedy runway landing.

Among the industries that have demonstrated interest in space-based operations:

In-space manufacturing such as 3D printing
Pharmaceutical and medical research
Agricultural production for food and science
Movie production
Tourism

The Dream Chaser, America’s Spaceplane®, is a reusable, multi-mission space utility vehicle. Dream Chaser Tenacity™ spaceplane and the Shooting Star™ transport vehicle will begin providing cargo delivery and disposal services to the International Space Station under NASA’s Commercial Resupply Services 2 (CRS-2) contract late next year.

The LIFE habitat is a three story, 27-foot large inflatable fabric environment that launches on a conventional rocket and inflates on-orbit. The LIFE habitat is undergoing a NASA soft-goods certification this year and the full size ground prototype developed under NASA’s NextSTEP-2 contract is in the process of being transferred from Johnson Space Center in Texas to Kennedy Space Center in Florida for further testing on short-and long-term habitation. SNC’s Astro Garden® system also provides fresh food within the habitat.

“NASA has asked private industry to come to the table with alternatives to the International Space Station,” said Janet Kavandi former NASA astronaut and SSG executive vice president of SNC’s Space Systems. “SNC intends to lead in LEO commercialization, building on NASA’s efforts to date and welcoming additional public and private partners worldwide.”

The first Dream Chaser orbital vehicle is being assembled in Louisville, Colorado. Thermal protection tiles are being installed on the vehicles exterior and its wings will be attached this summer.

About Dream Chaser Spacecraft

Owned and operated by SNC, the Dream Chaser spacecraft is a reusable, multi-mission space utility vehicle. It is capable of transportation services to and from low-Earth orbit and is the only commercial, lifting-body vehicle capable of a runway landing. The Dream Chaser Cargo System was selected by NASA to provide cargo delivery and disposal services to the International Space Station under the Commercial Resupply Services 2 (CRS-2) contract. All Dream Chaser CRS-2 cargo missions are planned to land at Kennedy Space Center’s Shuttle Landing Facility.

About Sierra Nevada Corporation (SNC)

Owned by Chairwoman and President Eren Ozmen and CEO Fatih Ozmen, SNC is a trusted leader in solving the world’s toughest challenges through best-of-breed, open architecture engineering in Space Systems, Commercial Solutions, and National Security and Defense. SNC is recognized among The Top 10 Most Innovative Companies in Space, as a Tier One Superior Supplier for the U.S. Air Force and is the only aerospace and defense firm selected as a 2020 US Best Managed Company. For nearly 60 years, SNC has delivered state-of-the-art civil, military and commercial solutions including more than 4,000 space systems, subsystems and components to customers worldwide, and participation in more than 450 missions to space, including to Mars.

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« Last Edit: 06/04/2021 08:58 pm by zubenelgenubi »

Offline FutureSpaceTourist

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Re: SNC LEO Space station
« Reply #1 on: 03/31/2021 07:24 pm »
https://twitter.com/sierranevcorp/status/1377338364752490501

Quote
New video illustrating SNC’s vision for development plans for a SNC low-Earth orbit (LEO) space station bit.ly/3mk3y01 #FutureofSpace #Space



https://twitter.com/sierranevcorp/status/1377339565455773697

Quote
“SNC intends to lead in LEO commercialization, building on NASA’s efforts to date and welcoming additional public and private partners worldwide” says @janetkavandi #FutureofSpace #Space

Offline ncb1397

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Re: SNC LEO Space station
« Reply #2 on: 03/31/2021 07:36 pm »
I think the scale is off on this. Maybe these are Ultra Dream Chasers or something.
« Last Edit: 03/31/2021 07:36 pm by ncb1397 »

Offline mainmind

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Re: SNC LEO Space station
« Reply #3 on: 03/31/2021 07:49 pm »
 
I think the scale is off on this. Maybe these are Ultra Dream Chasers or something.

If that is a standard robotics grapple fixture like the Canadarm2 uses on Cygnus and Cargo Dragon vehicles, it's diameter is almost 0.7 meters. Looks like you could have 2.5 of them span the height of that astronaut on EVA. So maybe it's a regular sized DreamChaser?

(Dimensions for FRGF from here: https://explorers.larc.nasa.gov/HPMIDEX/pdf_files/17C_Robotics-020918_R1.pdf)

Offline ncb1397

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Re: SNC LEO Space station
« Reply #4 on: 03/31/2021 08:23 pm »
I think the scale is off on this. Maybe these are Ultra Dream Chasers or something.

If that is a standard robotics grapple fixture like the Canadarm2 uses on Cygnus and Cargo Dragon vehicles, it's diameter is almost 0.7 meters. Looks like you could have 2.5 of them span the height of that astronaut on EVA. So maybe it's a regular sized DreamChaser?

(Dimensions for FRGF from here: https://explorers.larc.nasa.gov/HPMIDEX/pdf_files/17C_Robotics-020918_R1.pdf)

Maybe you are right. SNC says the Shooting Star is a "15 foot cargo module". Presumably that is the length, not the diameter. If the Astronaut is 5 feet tall (maybe a bit taller), it looks about right (it looks like you can fit about 3 of them along the height of the cargo module).

Side note: Apparently the shortest US astronaut was 5'3" (Wendy Lawrence).
« Last Edit: 03/31/2021 08:26 pm by ncb1397 »

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #5 on: 03/31/2021 08:31 pm »
I attended the press event and was able to ask questions.

LIFE is huge - 300 cubic meters.  Thus a 4-node station would enclose a lot more volume than ISS (~1000m^3).
Dream Chaser will have windows.  Whether or not it will have forward-facing windows is less clear.
The station is launch-vehicle agnostic, given lift capacity and a 5m fairing.
The station is expected to be able to host commercial or other organization's vehicles and modules.
They anticipate the possibility of having multiple stations in multiple orbits for multiple purposes, such as tourism, research, manufacturing, and even a station with no people onboard for a pristine environment.
DC has 80-85% commonality between cargo and crew versions.

Offline ncb1397

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Re: SNC LEO Space station
« Reply #6 on: 04/01/2021 12:15 am »
Short video clip of the press conference...
https://www.usatoday.com/videos/news/nation/2021/03/31/sierra-nevada-corp-unveils-space-station-plans/4828103001/

Slightly longer Youtube version...

« Last Edit: 04/01/2021 12:22 am by ncb1397 »

Offline edzieba

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Re: SNC LEO Space station
« Reply #7 on: 04/01/2021 02:14 pm »
Launching on what appears to be Vulcan Centaur Heavy (6 SRBs, extended Centaur) from an alternate history LC-39A.

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #8 on: 04/01/2021 05:49 pm »
Deleted because the video was taken private and re-posted on Vimeo.
« Last Edit: 04/02/2021 02:17 pm by Lee Jay »

Offline BrightLight

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Re: SNC LEO Space station
« Reply #9 on: 04/01/2021 07:44 pm »
In the video supplied by Lee Jay, at 1:09:35 Steve Lindsey says that after the CRS2 vehicle, SNC will build a crewed version. He also says (1:09:55) that in an emergency, the CRS2 vehicle with ECLSS can bring back astronauts.
« Last Edit: 04/01/2021 07:47 pm by BrightLight »

Offline TrevorMonty

Re: SNC LEO Space station
« Reply #10 on: 04/01/2021 08:07 pm »
Sounds like crew DC won't have windows in front. Don't need them for landing as screens with cameras and other sensors can do better job. Heat from reentry causes lot engineering headaches with front windows. Will still have windows in rear.

Pushing ability of cargo DC to return Astronauts in emergency. Cargo is 80% of crew version, sound like it just needs LAS, fixed wings and extra ECLSS endurance.

Can launch inflatable habitat and service module on single launch (Vulcan??) so one launch to have operational station. Looking to partners to provide other modules, my guess Thale Alenia, they are experts in this area.

Orbit flexible, most likely optimised for launch site that will service it eg Wallops or Cape.

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Offline Lee Jay

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Re: SNC LEO Space station
« Reply #11 on: 04/01/2021 10:53 pm »
Pictures.

Offline mn

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Re: SNC LEO Space station
« Reply #12 on: 04/01/2021 11:11 pm »
So is this a dream? or is there real money to do this?

I understand there is some nasa money but doesn't seem like anything close to what's needed for something like this to happen.

Offline RonM

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Re: SNC LEO Space station
« Reply #13 on: 04/01/2021 11:37 pm »
Pushing ability of cargo DC to return Astronauts in emergency. Cargo is 80% of crew version, sound like it just needs LAS, fixed wings and extra ECLSS endurance.

Cargo DC doesn't need LAS or fixed wings. It's already at the space station if the need arises for crew to use it in an emergency. Would need ECLSS.

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #14 on: 04/02/2021 12:12 am »
I forgot - crew DC still launches with no fairing.

Offline GWH

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Re: SNC LEO Space station
« Reply #15 on: 04/02/2021 12:20 am »
Another space station concept with no windows  ::)

I like SNC but I am getting big time Bigelow vibes from this where they are pushing out a concept with nowhere near the business case to make it happen.  SNC is leaps and bounds more business savvy than Bigelow,  but I won't be holding my breath to see if this goes anywhere.

Offline adrianwyard

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Re: SNC LEO Space station
« Reply #16 on: 04/02/2021 12:56 am »
The YouTube video is now private :-(

Any mention of Launch Abort capability for crewed version?

Whole event.  It's unlisted but I got explicit written permission from SNC to share the link publicly.  The event starts about 45:30 in.



Offline Lee Jay

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Re: SNC LEO Space station
« Reply #17 on: 04/02/2021 01:05 am »
The YouTube video is now private :-(

Any mention of Launch Abort capability for crewed version?

Dang.

Yes...100% abort capable from pad to orbit.  Discussed by Steve Lindsey.

Offline adrianwyard

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Re: SNC LEO Space station
« Reply #18 on: 04/02/2021 01:22 am »
I'm glad to hear it. Do you recall any details? E.g. LAS to be integrated into body (major change from cargo version), or externally on stage adapter? Propellant?
The YouTube video is now private :-(

Any mention of Launch Abort capability for crewed version?

Dang.

Yes...100% abort capable from pad to orbit.  Discussed by Steve Lindsey.

Offline adrianwyard

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Re: SNC LEO Space station
« Reply #19 on: 04/02/2021 01:26 am »
Is this the same as the (now private) YouTube video?
« Last Edit: 04/02/2021 01:27 am by adrianwyard »

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #20 on: 04/02/2021 01:26 am »
As I recall, he said it launches with the cargo module even in crew mode and that the abort systems are integrated into the vehicle (I think).  He specifically mentioned having enough thrust for pad abort.

Offline adrianwyard

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Re: SNC LEO Space station
« Reply #21 on: 04/02/2021 01:48 am »
I just found Steve Lindsey's answer on the Vimeo recording (starts at 49:46).

He does talk about separating from the cargo module and the use of a sustainer motor to get to a runway, which makes it sound like the sustainer is integrated rather than on the cargo module, but it's not 100% clear.

(For Dream Chaser only discussion, perhaps we should switch to that thread: https://forum.nasaspaceflight.com/index.php?topic=29417.0)

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #22 on: 04/02/2021 02:05 am »
Is this the same as the (now private) YouTube video?


Yes...thank you!


That's the back of my head on the left edge.
« Last Edit: 04/02/2021 02:06 am by Lee Jay »

Offline TrevorMonty

Re: SNC LEO Space station
« Reply #23 on: 04/02/2021 11:29 am »
Pushing ability of cargo DC to return Astronauts in emergency. Cargo is 80% of crew version, sound like it just needs LAS, fixed wings and extra ECLSS endurance.

Cargo DC doesn't need LAS or fixed wings. It's already at the space station if the need arises for crew to use it in an emergency. Would need ECLSS.
Another space station concept with no windows  ::)

I like SNC but I am getting big time Bigelow vibes from this where they are pushing out a concept with nowhere near the business case to make it happen.  SNC is leaps and bounds more business savvy than Bigelow,  but I won't be holding my breath to see if this goes anywhere.
SNC is experienced aerospace company with 4-5000 empolyees, this space station is well within their capabilities. Being privately owned by Ozmens their are free to fund this project, no shareholders to answer too.

They would be 2nd largest privately own aerospace company behind SpaceX. Blue is closing fast with money Bezos is injecting.

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Offline ncb1397

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Re: SNC LEO Space station
« Reply #24 on: 04/02/2021 03:33 pm »
Pushing ability of cargo DC to return Astronauts in emergency. Cargo is 80% of crew version, sound like it just needs LAS, fixed wings and extra ECLSS endurance.

Cargo DC doesn't need LAS or fixed wings. It's already at the space station if the need arises for crew to use it in an emergency. Would need ECLSS.
Another space station concept with no windows  ::)

I like SNC but I am getting big time Bigelow vibes from this where they are pushing out a concept with nowhere near the business case to make it happen.  SNC is leaps and bounds more business savvy than Bigelow,  but I won't be holding my breath to see if this goes anywhere.
SNC is experienced aerospace company with 4-5000 empolyees, this space station is well within their capabilities. Being privately owned by Ozmens their are free to fund this project, no shareholders to answer too.

If they don't have shareholders, then they have to answer to bankers. I'm not so sure that they can fund this out of their own pocket or SNC's earnings, and I'm not sure how much NASA is putting up (Congress is going to have a say). They could do a private fundraising round or go public, or start small and slowly build out over time as it is modular. If NASA signs contracts for on orbit habitat space even if it is years out, they could probably finance a good portion ahead of time via loans. Anyways, this is a very long term project (they mention before the decade is out but that could stretch), and would be accomplished in phases (The next phase would be cargo missions hopefully next year). If they get a contract to put LIFE at gateway, that would go a long way into proving out and development of the underlying technology.
« Last Edit: 04/02/2021 03:36 pm by ncb1397 »

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #25 on: 04/02/2021 03:58 pm »
They mention (starting 29:50-31:30 on the video) that they want overlap with the 2028 expected earliest ISS retirement.

Offline GWH

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Re: SNC LEO Space station
« Reply #26 on: 04/02/2021 04:22 pm »
SNC is experienced aerospace company with 4-5000 empolyees, this space station is well within their capabilities. Being privately owned by Ozmens their are free to fund this project, no shareholders to answer too.

They would be 2nd largest privately own aerospace company behind SpaceX. Blue is closing fast with money Bezos is injecting.


I don't have any doubts about their technical ability to design and build a space station, nor their ability to build relationships and agreements with governmental agencies like NASA.

What I am skeptical on is their ability to attract and retain commercial customers in order to fill in the gaps in what will be a competitive environment and at best small market.

Axiom is already building and has customers flying next year, albeit to the ISS but that revenue stream is flowing regardless. That huge cupola is being built as we speak and IMO is very appealing to the tourist market segment.
Then we have Blue Origin and whatever they plan to build and fly. Can Blue actually execute in a timely manner? Maybe, maybe not.
Will a Chinese station or (unlikely) Russian station attract foreign potential customers?
Of course there's "Company X" but I don't want to speculate on that discussion and derail this thread.

Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

Time will tell if SNC can attract customers - the UN Dream Chaser free flyer can provide some insight. I haven't heard anything on that project in a long time, but maybe it's moving ahead steadily in the background?

Overall my sense is that this is another solution in search of a problem. A solution backed by a great engineering team yes, but not a solution to a well defined demand and market.

Offline Lee Jay

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Re: SNC LEO Space station
« Reply #27 on: 04/02/2021 04:40 pm »
Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.

Offline JAFO

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Re: SNC LEO Space station
« Reply #28 on: 04/02/2021 04:56 pm »
Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.


Lee I’m a little confused. Are you saying they had a full scale mockup you were able to physically examine or are you just going off the presentation? If there is a physical full-scale mock up were you allowed to take and can you post any images?


Thanks.
Anyone can do the job when things are going right. In this business we play for keeps.
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Offline Lee Jay

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Re: SNC LEO Space station
« Reply #29 on: 04/02/2021 05:01 pm »
Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.


Lee I’m a little confused. Are you saying they had a full scale mockup you were able to physically examine or are you just going off the presentation? If there is a physical full-scale mock up were you allowed to take and can you post any images?


Thanks.

I was inside it, 2 years ago today, actually, and did post many pictures on L2.

https://forum.nasaspaceflight.com/index.php?topic=47793.0

Offline ncb1397

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Re: SNC LEO Space station
« Reply #30 on: 04/02/2021 05:02 pm »
I just don't see any particular reason to use expandables in LEO.


They do tend to be extremely light. BEAM is like 88 kg/cubic meter. Destiny is about 137 kg/cubic meter. If Life is 88 kg/cubic meter, that puts the module at 26,400 kg. That is essentially within the capabilities of Vulcan Centaur with a few solids. With New Glenn's 45 t, you could add on a power and propulsion element and have a basic habitat in one launch.

Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.


Lee I’m a little confused. Are you saying they had a full scale mockup you were able to physically examine or are you just going off the presentation? If there is a physical full-scale mock up were you allowed to take and can you post any images?


Thanks.

There is plenty of video and pictures of it...

« Last Edit: 04/02/2021 05:05 pm by ncb1397 »

Offline JAFO

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Re: SNC LEO Space station
« Reply #31 on: 04/02/2021 05:14 pm »
Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.


Lee I’m a little confused. Are you saying they had a full scale mockup you were able to physically examine or are you just going off the presentation? If there is a physical full-scale mock up were you allowed to take and can you post any images?


Thanks.

I was inside it, 2 years ago today, actually, and did post many pictures on L2.

https://forum.nasaspaceflight.com/index.php?topic=47793.0


Thanks. I had to let my L2 subscription lapse, they raised the prices on Rotax 914s and it’s almost time to buy one.
« Last Edit: 04/02/2021 05:15 pm by JAFO »
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Offline Lee Jay

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Re: SNC LEO Space station
« Reply #32 on: 04/02/2021 05:25 pm »
Then there is the major value proposition of an expandable module: flying on 5 meter fairings. Same as what Bigelow proposed with B330. In a world where 7 meter New Glenn should be flying, Vulcan is at least capable of hosting a 7 meter fairing, and "Company X" may or may not be capable of flying 9 meter payloads, I just don't see any particular reason to use expandables in LEO.

That module I was in was huge.  I wasn't kidding when I said it felt like my house.  My house is 2 stories above ground and 1 below.  It's 26 feet total in inside height - about the same size as this module.  I've been inside an ISS module mockup (a little over 4m in diameter).  It's the difference between a walk-in closet and a whole house.


Lee I’m a little confused. Are you saying they had a full scale mockup you were able to physically examine or are you just going off the presentation? If there is a physical full-scale mock up were you allowed to take and can you post any images?


Thanks.

I was inside it, 2 years ago today, actually, and did post many pictures on L2.

https://forum.nasaspaceflight.com/index.php?topic=47793.0


Thanks. I had to let my L2 subscription lapse, they raised the prices on Rotax 914s and it’s almost time to buy one.

Not going for the 915is?  I hear they're only a few centuries worth of L2 subscription funds.

That's Steve Lindsey on the left.

Offline JAFO

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Re: SNC LEO Space station
« Reply #33 on: 04/02/2021 06:09 pm »
Too complicated for my build. At some point you get away from what you're building, a LSX is not a 787. (Check PMs)


Is thread drift approved if you're replying to a Mod?
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Offline TrevorMonty

Re: SNC LEO Space station
« Reply #34 on: 04/02/2021 06:38 pm »
Inflatables offer more protection from MMD and radiation according to Bigelow reports. There should be difference in noise absorption compared to metal habitats, not sure if its for better though.

Move to 7 or 8m fairing and size goes up considerably see Bigelow BA2100.
Would need extra flights to fully fit it out.


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Offline TrevorMonty

Re: SNC LEO Space station
« Reply #35 on: 05/19/2021 07:31 pm »
SNC may have their first customer for LEO station. Redwire owns Made In Space which is developing a few 0g manufacturing technologies, optical fibre being one of them.

Besides renting room in station can also rent port and attach your own module. Just  buy air, power, comms and possibly transport from SNC.

https://www.sncorp.com/press-releases/sierra-space-signs-in-space-manufacturing-agreement/

Sierra Nevada Corporation (SNC), today announced the signing of a joint agreement with Redwire aimed at leveraging Sierra Space capabilities for a range of in-space services and manufacturing.

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Offline clongton

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Re: Sierra Space LEO Space station
« Reply #36 on: 09/25/2021 09:33 pm »
Bump
Chuck - DIRECT co-founder
I started my career on the Saturn-V F-1A engine

Offline pathfinder_01

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Re: Sierra Space LEO Space station
« Reply #37 on: 10/14/2021 06:46 am »
I am amazed from the dream chaser PDF they plan this system to have operational costs of about 300 million. Now that is a lower target than I expected.

Offline yg1968

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Re: Sierra Space LEO Space station
« Reply #38 on: 10/25/2021 10:02 pm »
« Last Edit: 10/25/2021 10:28 pm by yg1968 »

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Re: Sierra Space LEO Space station
« Reply #40 on: 03/10/2022 09:25 pm »
Angry Astronaut did a bit about Sierra's station with a nice emphasis on international cooperation:
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Offline TrevorMonty

Re: Sierra Space LEO Space station
« Reply #41 on: 03/13/2022 03:44 am »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

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Offline WmThomas

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Re: Sierra Space LEO Space station
« Reply #42 on: 03/15/2022 12:03 pm »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?

Offline TrevorMonty

Re: Sierra Space LEO Space station
« Reply #43 on: 03/15/2022 04:22 pm »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?
Watch the video above.

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Offline deadman1204

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Re: Sierra Space LEO Space station
« Reply #44 on: 03/15/2022 05:24 pm »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?
Watch the video above.

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Thats a 20 some minute video to answer a simple question. Can you provide a timestamp to something that says the project is fully funded?

Offline TrevorMonty

Re: Sierra Space LEO Space station
« Reply #45 on: 03/15/2022 05:26 pm »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?
Watch the video above.

Sent from my SM-G570Y using Tapatalk

Thats a 20 some minute video to answer a simple question. Can you provide a timestamp to something that says the project is fully funded?
Not going back through it. SS raised $1.4B in their funding round.

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Offline yg1968

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Re: Sierra Space LEO Space station
« Reply #46 on: 03/16/2022 01:52 am »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?
Watch the video above.

Sent from my SM-G570Y using Tapatalk

Thats a 20 some minute video to answer a simple question. Can you provide a timestamp to something that says the project is fully funded?
Not going back through it. SS raised $1.4B in their funding round.

Sent from my SM-T733 using Tapatalk

It doesn't say that it is fully funded. It mentions the $1.4B but that funding is also for crewed Dream Chaser (see the link below).

https://sierraspace.com/newsroom/press-releases/sierra-space-secures-record-1-4-billion-series-a-growth-investment-and-achieves-4-5-billion-valuation/
« Last Edit: 03/16/2022 01:54 am by yg1968 »

Offline yg1968

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Re: Sierra Space LEO Space station
« Reply #47 on: 03/16/2022 01:57 am »
Not everything that is mentioned in the video is accurate. For example, there is no international cooperation. If Blue wants services from foreign providers, it must pay for them. 

Offline yg1968

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Re: SNC LEO Space station
« Reply #48 on: 03/16/2022 02:05 am »
Sounds like crew DC won't have windows in front. Don't need them for landing as screens with cameras and other sensors can do better job. Heat from reentry causes lot engineering headaches with front windows. Will still have windows in rear.

In the video, there is windows on the side. Incidentally, windows are a requirement for commercial crew certification. See pages 292-293:

Quote from: page 292 of the CCT-REQ-1130 requirements
The spacecraft shall provide optically uniform windows with optical performance properties

https://forum.nasaspaceflight.com/index.php?topic=26489.msg1650808#msg1650808
« Last Edit: 03/16/2022 03:08 am by yg1968 »

Offline su27k

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Re: Sierra Space LEO Space station
« Reply #49 on: 03/19/2022 02:12 am »
Sierra Space to work with Mitsubishi Heavy Industries on commercial space station technologies

Quote from: SpaceNews
Sierra Space and Mitsubishi Heavy Industries (MHI) have signed an agreement to study collaboration on technologies to support a planned commercial space station.

The two companies announced March 17 a memorandum of understanding regarding collaboration on a “wide range of technologies” that could be used for Orbital Reef, a commercial space station announced last October with Sierra Space as one of the lead partners.

The companies did not elaborate on the technologies they will consider for Orbital Reef under the agreement. MHI does have extensive experience in International Space Station operations as the manufacturer of the Kibo laboratory module, which was installed on the station in 2008. The company also built the HTV cargo spacecraft and H-2 launch vehicle that launched those spacecraft to the station.

Offline deadman1204

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Re: Sierra Space LEO Space station
« Reply #50 on: 03/19/2022 06:51 pm »
Between Sierra Space and Blue this space station is fully funded. They push a head with it regardless of NASA funding.

Says who? Sierra Space hasn't flown anything on their own dime. Dreamchaser development seems completely tied to the amount of NASA funding, and not speedy even then. I don't see why their space station ideas would get made any faster.

Blue Origin has Bezos' billions to back it. But it lacks focus and urgency. Look at the New Glenn program.

Do you know something I don't?
Watch the video above.

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Thats a 20 some minute video to answer a simple question. Can you provide a timestamp to something that says the project is fully funded?
Not going back through it. SS raised $1.4B in their funding round.

Sent from my SM-T733 using Tapatalk

So you are making crap up then? Cause a funding round has NOTHING to do with a fully funded station. Thats peanuts.

Offline FutureSpaceTourist

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Re: Sierra Space LEO Space station
« Reply #51 on: 08/22/2022 07:51 pm »
https://www.sierraspace.com/newsroom/press-releases/sierra-space-and-blue-origin-successfully-complete-orbital-reef-system-definition-review/

Quote
Sierra Space and Blue Origin Successfully Complete Orbital Reef System Definition Review
AUGUST 22, 2022

Orbital Reef Space Station Advances to Design Phase After NASA Review

LOUISVILLE, Colo. and KENT, Wash. – August 22, 2022 – The Orbital Reef team, led by partners Sierra Space and Blue Origin, has successfully completed its System Definition Review (SDR) with NASA.

The SDR is an important program milestone to establish the functional baseline for Orbital Reef, a commercially developed, owned and operated space station to be built in low-Earth orbit (LEO). It demonstrates to NASA that the space station design is feasible and achievable while validating that the Orbital Reef system is on-track to proceed into the design phase.

The Orbital Reef team, including Amazon Supply Chain, Amazon Web Services, Arizona State University, Boeing, Genesis Engineering Solutions and Redwire Space, is maturing the design of its space station in partnership with NASA under the agency’s Commercial Low-Earth Orbit Development (CLDP) program. NASA awarded the agreement in December 2021 to shift NASA’s research and exploration activities in LEO to commercial space stations and help stimulate a growing space economy.

The SDR included an extensive review to ensure that the proposed Orbital Reef architecture is responsive to the functional and performance requirements; it examined the proposed system architecture and the flow-down to all functional elements of the Orbital Reef system. The successful SDR supported NASA’s decision to further develop the system architecture and design. Representatives from Blue Origin, Sierra Space, team members, and NASA participated in the review, conducted between mid-June and mid-July to allow in-depth review of documentation and feedback to the team.

“We are on the doorstep of the most profound industrial revolution in human history. An industrial revolution marked by the transition from the last 60 years of space exploration to a future where humanity extends our factories and cities into space. It isn’t solely about tourism – it is about unlocking the next great discoveries using the microgravity factories that we will build just 250 miles above the Earth’s surface,” said Tom Vice, CEO of Sierra Space. “The microgravity factories and services provided by Orbital Reef have the potential to revolutionize every industry and become a major growth contributor to the U.S. and world economies.”

“This SDR moves Orbital Reef forward,” said Brent Sherwood, Senior Vice President of Advanced Development Programs at Blue Origin. “We are meeting the needs of both the commercial marketplace and NASA’s requirements. Orbital Reef will change the game for human space flight in Earth orbit.”

Orbital Reef will open the next chapter of human space exploration and development by facilitating the growth of a vibrant ecosystem and business model for the future. Designed to open multiple new markets in space, Orbital Reef will provide anyone with the opportunity to establish their own address in orbit. This unique destination will offer research, industrial, international, and commercial customers the cost competitive end-to-end services they need including space transportation and logistics, space habitation, equipment accommodation and operations including onboard crew. The station is expected to be operational by 2027.

For more information, visit www.orbitalreef.com.

Offline FutureSpaceTourist

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Re: Sierra Space LEO Space station
« Reply #52 on: 09/13/2022 02:52 pm »
https://twitter.com/thesheetztweetz/status/1569698118794465285

Quote
Sierra Space completed a burst pressure test of a one-third scale version of its inflatable LIFE habitat:



https://www.businesswire.com/news/home/20220913005422/en/Sierra-Space’s-LIFE™-Habitat-Completes-Successful-Ultimate-Burst-Pressure-Test

Offline Asteroza

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Re: Sierra Space LEO Space station
« Reply #53 on: 09/14/2022 02:25 am »
Design safety pressure 182.4 PSI, burst at 192. Looks like hemisphere/cylinder join line broke? Plus the stand jumping loose is a little scary...

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Re: Sierra Space LEO Space station
« Reply #54 on: 09/14/2022 04:58 am »
I mean this thing shouldn’t ever see more than sea level pressure, so this is a rather-excessive factor of safety of 13 (depending on how you wish to define 13).

Not that the restraint layer ends up being the bulk of the weight or cost anyway. But kind of interesting.
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Offline Rondaz

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Re: Sierra Space LEO Space station
« Reply #55 on: 09/14/2022 02:35 pm »
Watch Sierra Space's LIFE habitat burst in pressure test


Offline Lampyridae

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Re: Sierra Space LEO Space station
« Reply #56 on: 09/16/2022 02:44 pm »
So you are making crap up then? Cause a funding round has NOTHING to do with a fully funded station. Thats peanuts.

I'm not going to dig through the video for the specifics, but that is exactly how funding rounds work. New products don't appear out of thin air and need far more than your revenue stream to get off the ground.

Even for a mature company like Sierra, $1.4 billion is a huge amount of funding. It's equivalent to half their pre-funding round valuation. And it's a Series A funding round, which is typically ~$10 million for most tech companies. Normally only companies like Boeing can pull in $1 billion+, usually piggybacking off of government pork. Sierra has made significant progress over the years with NASA funding and may be very close to a flyable Dragon competitor.

By the way, this burst test is also partly why they can secure this Series A funding. They're showing potential investors, just like in Dragon's Den, that they have a good potential product. But the Series A funding looks like it's earmarked for Dreamchaser development, which seems sound: a revenue generating vehicle, which will fund the next expansion which will probably be the space station.

*There's also debt financing, basically bond issuing, and most company expansions strike their own balance between the two. That can get you a LOT of funding, at 2:1 that would create a valuation of $13.5bn. Which is plenty enough to finish developing a spacecraft that was initially designed for crew and generate income. Even if your name is Boeing.
« Last Edit: 09/16/2022 03:12 pm by Lampyridae »

Offline yg1968

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Re: Sierra Space LEO Space station
« Reply #57 on: 09/17/2022 02:10 pm »

Offline JAFO

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Re: SNC LEO Space station
« Reply #58 on: 09/19/2022 01:37 am »

Thanks. I had to let my L2 subscription lapse, they raised the prices on Rotax 914s and it’s almost time to buy one.

Not going for the 915is?  I hear they're only a few centuries worth of L2 subscription funds.

That's Steve Lindsey on the left.

[thread drift] :) [/thread drift]
« Last Edit: 09/19/2022 01:42 am by JAFO »
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Offline JAFO

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Re: Sierra Space LEO Space station
« Reply #59 on: 09/19/2022 01:42 am »

Thanks. I had to let my L2 subscription lapse, they raised the prices on Rotax 914s and it’s almost time to buy one.

That's Steve Lindsey on the left.
About a year ago I flew with a guy who saw the Dream Chaser sticker on my flight bag (You know you're a Space Geek when...) and played innocent, asking me a bunch of questions about it before divulging that he knew Steve pretty well. I damn near begged him to give me Steve's contact info, but smartly refused. Said despite knowing Steve, he had not been able to get in and see DC, either.
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Offline Lee Jay

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Re: Sierra Space LEO Space station
« Reply #60 on: 09/19/2022 02:45 pm »

Thanks. I had to let my L2 subscription lapse, they raised the prices on Rotax 914s and it’s almost time to buy one.

That's Steve Lindsey on the left.
About a year ago I flew with a guy who saw the Dream Chaser sticker on my flight bag (You know you're a Space Geek when...) and played innocent, asking me a bunch of questions about it before divulging that he knew Steve pretty well. I damn near begged him to give me Steve's contact info, but smartly refused. Said despite knowing Steve, he had not been able to get in and see DC, either.

FYI, the flight test article is visible from the front vestibule of their building in Louisville, CO.  It's right behind the receptionist's desk behind glass.

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Re: Sierra Space LEO Space station
« Reply #61 on: 12/13/2022 04:41 am »
SECOND TEST Results

Sierra Space’s LIFE Habitat Successfully Completes Second Ultimate Burst Pressure Test



Quote
Dec 12, 2022
Sierra Space conducted a successful Ultimate Burst Pressure (UBP) test on a sub-scale version of the company’s LIFE™ habitat at NASA’s Marshall Space Flight Center in Huntsville, Alabama. LIFE, or Large Integrated Flexible Environment, is an inflatable habitation module developed by Sierra Space for use on Orbital Reef, the world’s first commercial space station. A full-scale LIFE habitat expands to the size of a three-story apartment building in space, where astronauts can live and work comfortably for long periods of time. The test exceeded NASA certification requirements for inflatable habitation modules and further establishes Sierra Space as the leader in commercial space station development. Sierra Space is the only active commercial space company to meet multiple successful UBP trials.
« Last Edit: 12/13/2022 04:42 am by catdlr »
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Re: Sierra Space LEO Space station
« Reply #62 on: 12/13/2022 02:53 pm »
Sierra Space has successfully completed its second sub-scale Ultimate Burst Pressure (UBP) test and is the only active commercial space company to successfully meet multiple UBP trials.

https://twitter.com/SierraSpaceCo/status/1602688227445555203

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Re: Sierra Space LEO Space station
« Reply #63 on: 01/31/2023 05:34 am »
Reasons to Believe | LIFE Habitat for Space Exploration

Quote
Jan 30, 2023
Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat launches on a conventional rocket and inflates on-orbit to a large structure that is three stories tall, and 27 feet in diameter. It's stronger than steel and designed to support LEO applications and long-duration missions.

"Investing in these types of technologies and developing them for space exploration means that we can leverage it for other applications that directly benefit humanity." - Mickey Mathew, Systems Engineer - Space Destinations

We look forward to continuing to build this key element in our Destinations portfolio and paving the way for the development of advanced inflatable habitat systems and architectures.

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Offline DanClemmensen

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Re: Sierra Space LEO Space station
« Reply #64 on: 01/31/2023 05:54 am »
Reasons to Believe | LIFE Habitat for Space Exploration

Quote
Jan 30, 2023
Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat launches on a conventional rocket and inflates on-orbit to a large structure that is three stories tall, and 27 feet in diameter.
That's almost 92% of the diameter of Starship, and almost 50% of the height of the Starship payload bay. You could launch two of these, fully inflated, in one Starship. Or just use the Starship instead.

Caveat: Starship has not yet flown.

Offline clongton

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Re: Sierra Space LEO Space station
« Reply #65 on: 01/31/2023 02:08 pm »
Reasons to Believe | LIFE Habitat for Space Exploration

Quote
Jan 30, 2023
Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat launches on a conventional rocket and inflates on-orbit to a large structure that is three stories tall, and 27 feet in diameter.
That's almost 92% of the diameter of Starship, and almost 50% of the height of the Starship payload bay. You could launch two of these, fully inflated, in one Starship. Or just use the Starship instead.

Caveat: Starship has not yet flown.

Neither has LIFE.
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Re: Sierra Space LEO Space station
« Reply #66 on: 02/01/2023 06:28 am »
LIFE Habitat | Successful Accelerated Systematic Creep Test for Extended Human Missions

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Re: Sierra Space LEO Space station
« Reply #67 on: 09/20/2023 12:23 pm »
https://www.sierraspace.com/newsroom/press-releases/sierra-space-reinvents-the-space-station-putting-affordable-in-space-infrastructure-within-reach/

Quote
LOUISVILLE, Colo. – Sept. 20, 2023 – Sierra Space, a leading, pureplay commercial space company building the first end-to-end business and technology platform in space, today announced it completed a fifth, sub-scale test of their revolutionary LIFE™ habitat (Large Integrated Flexible Environment). ILC Dover is the exclusive softgoods technology partner on the Sierra Space platform.

This latest successful milestone and the first one in the testing campaign to include a metallic window sub-structure – or blanking plate – now propels Sierra Space into full-scale testing of LIFE by the end of this year. The milestone cements the company’s position as the industry leader in commercial space station development for use in low-Earth orbit (LEO) and deep space.

“Sierra Space is putting affordable in-space infrastructure within reach so every boardroom can now look to space for their next breakthrough products,” said Sierra Space CEO Tom Vice. “Our revolutionary space station technology, combined with our highly reusable Dream Chaser spaceplane, significantly decreases the cost of in-space infrastructure and Is ushering in the commercialization of Low Earth Orbit.”

On Aug. 17, Sierra Space, in collaboration with ILC Dover and NASA subject-matter experts, conducted an Ultimate Burst Pressure (UBP) test on a one-third-scale version of the inflatable habitat. This test article included a blanking plate – a metallic structure inserted into the softgoods shell to emulate a future design component, such as a window, robotic arm or antenna attachment point. For this burst test, a steel blanking plate was used as a stand-in for a future window.This recent UBP test of the sub-scale LIFE with a blanking plate surpassed all other previous test article maximum burst pressures. The results of this test provide a 33% margin over the certification standard for full-scale LIFE testing, and nearly a 20% improvement over the previous design, aligning with Sierra Space’s two previous sub-scale UBP tests conducted in July and November 2022. Sierra Space is the only active commercial space company to test both UBP (3) and Creep (2) on an inflatable softgoods architecture at sub or full scale and now with a blanking plate.

“Inclusion of the blanking plate hard structure was a game-changer because this was the first time that we infused metallics into our softgoods pressure shell technology prior to conducting a UBP test,” said Sr. Director Engineering and Product Evolution Director for Sierra Space Destinations, Shawn Buckley. “With this added component, once again, we successfully demonstrated that LIFE’s current architecture at one-third scale meets the minimum 4x safety factor required for softgoods inflatables structures. This is a phenomenal achievement and provides the necessary engineering foundation that allows us to move into the next phase of the LIFE product line development – full-scale testing of LIFE.”

Once fully developed, the LIFE habitat will house a minimum of two windows, and they are a critical feature in the development of the LIFE habitat. They help crew members deal with any feelings of living in a confined space. More importantly, windows provide the crew an opportunity to witness the beauty of planet Earth in a way that can forever change them as people.

“As pioneers in softgoods solutions, such as inflatable habitats, we are dedicated to advancing the next era of human spaceflight and sustaining life in low-Earth orbit,” said Robert Reed, President, Space and Engineered Solutions at ILC Dover. “The milestone of this recent burst test underscores our commitment to safeguarding explorers as they push the boundaries and embark on transformative journeys beyond our planet. We are proud to have contributed to this crucial endeavor and further showcase the reliability our inflatable habitat.”

This recent UBP test was performed with support from NASA via a Reimbursable Space Act Agreement in which Marshall Space Flight Center provides services to Sierra Space in support of its exploration and commercial low-Earth orbit (LEO) technology development and risk reduction activities. The test occurred in Huntsville, Ala., on Redstone Arsenal in the flame trench of the historic Saturn 1/1B test stand.

Sierra Space’s full-scale LIFE habitat product line is a key component of the company’s in-space destinations technology portfolio. The inflatable module is a three-story commercial habitation, science and bio pharma platform designed to allow humans to live and work comfortably in LEO and beyond. It is constructed of high strength, “softgoods” materials (sewn and woven fabrics, primarily Vectran) that become rigid structures when pressurized.
« Last Edit: 09/20/2023 12:24 pm by spacenuance »

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Re: Sierra Space LEO Space station
« Reply #69 on: 09/20/2023 10:39 pm »
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Re: Sierra Space LEO Space station
« Reply #70 on: 11/13/2023 03:31 pm »
https://twitter.com/sierraspaceco/status/1724049541379260457

Quote
Our team is preparing for the biggest-ever "burst test" of our inflatable, expandable space station technology at @NASA_Marshall in Dec. 2023. This will be a significant milestone for Orbital Reef, in co-development with @BlueOrigin.

Link:

https://www.sierraspace.com/newsroom/press-releases/sierra-space-sets-the-stage-for-pioneering-full-scale-burst-test-of-expandable-space-station-module/

Quote
Sierra Space Sets the Stage for Pioneering Full-Scale “Burst Test” of Expandable Space Station Module
NOVEMBER 13, 2023
|   NEWS

Unprecedented Test of Softgoods Structure is a Significant Milestone in the Development of World’s First Commercial Space Station, Orbital Reef

Low-Volume Launches Become High-Volume Space Stations on Orbit


LOUISVILLE, Colo. – Nov. 13, 2023 – Sierra Space, a leading pureplay commercial space company building the first end-to-end business and technology platform in space, announced today that it is on the brink of a historic moment as the company prepares for its biggest-ever “burst test” of Sierra Space’s inflatable, expandable space station technology.

This groundbreaking endeavor marks a critical step in Sierra Space’s co-development of Orbital Reef with Blue Origin, as the company plans to stress test – for the first time in history – a full-scale version of its LIFE™ habitat structure and bring the unit to failure under pressure. LIFE is constructed of high-strength “softgoods” materials, which are sewn and woven fabrics – primarily Vectran – that become rigid structures when pressurized on orbit. To date, Sierra Space has conducted five stress tests on subscale test articles; this next one will be 18x larger – nearly 300 m³ of pressurized volume.

Full-Scale LIFE Habitat at MSFC
Scheduled for December 2023 at the NASA Marshall Space Flight Center in Huntsville, Ala., the Ultimate Burst Pressure (UBP) test is expected to provide Sierra Space and the Orbital Reef program team with critical data in support of NASA’s softgoods certification guidelines. The over-pressurization to failure during the test will not only demonstrate the habitat’s capabilities but also open avenues for structural enhancements.

Sierra Space’s expandable space station module technology is highly scalable and flexible to all existing and planned launch vehicle fairing sizes. The softgoods structures launch packed inside conventional rocket fairings – 5m, 7m, 9m and beyond – inflating to capacity on orbit. Low-volume launches become high-volume space stations. The module volume will always be the square of its expansion diameter. For example, with a 2.5x expandable configuration, the volume would be 6.25x of a rocket fairing.

“Sierra Space’s inflatable space station module technology offers the absolute largest in-space pressured volume, the best unit economics per on-orbit volume and lowest launch and total operating costs,” said Sierra Space CEO Tom Vice. “Having the best unit economics positions Sierra Space as the category leader in microgravity research and product development – providing customers with the most attractive return on their investment.”

Key Dimensions:

Full scale LIFE habitat with a height of 20.5 feet (Total height with ground support equipment: 29.5 feet)
Diameter: 27 feet
Volume: 10,000 cubic feet (283.17 m3)

Current Progress:

All components and ground support equipment are in the integration phase at NASA Marshall Space Flight Center

Upcoming Steps:

Softgoods integration into the test stand will be followed by transportation, utilizing the legendary NASA KAMAG transporter tractor, to the historic testing location adjacent to the flame trench of the Saturn 1/1B test stand — where NASA tested rockets for the Apollo program
Setup and calibration of sensors and cameras, alongside operational run-throughs, will prepare for the full-scale UBP test in December 2023

Objectives and Lessons Learned:

The recent successes of subscale burst tests have emboldened Sierra Space to undertake the full-scale burst test with confidence
Sierra Space aims to further refine its technical approach to safety factors and structural integrity through this test
Insights from previous tests contribute to technical maturation in support of higher-fidelity manufacturing processes

Core Materials and Blanking Plates:

The restraint layer for LIFE is constructed of high-strength “softgoods” materials, which are sewn and woven fabrics – primarily Vectran – that become rigid structures when pressurized
Under normal operating pressure, the Vectran softgoods materials become 5x stronger than steel, exceeding station lifetime performance safety factors
The restraint layer is complemented by a bladder allowing controlled inflation and pressurization to ultimate burst pressure test failure
Two metallic blanking plates are strategically inserted into the restraint layer, designed for seamless integration into the structural shell with minimal performance degradation or knockdown; blanking plates are metal placeholders for integrating windows, airlocks, robotic arms and other features, into the softgoods layer

Offline FutureSpaceTourist

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Re: Sierra Space LEO Space station
« Reply #71 on: 12/22/2023 07:01 am »
https://twitter.com/sierraspaceco/status/1737942073863770274

Quote
Our team has completed the first ever, full-scale ultimate burst pressure test for our commercial space station at @NASA_Marshall. We look forward to sharing more in January 2024.

YouTube:


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Re: Sierra Space LEO Space station
« Reply #72 on: 01/13/2024 01:34 am »
And here is the burst test, I found this video as part of the 2023 Year in Review at NASA's Marshall Space Flight Center video released today.




« Last Edit: 01/13/2024 01:35 am by catdlr »
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Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #73 on: 01/22/2024 03:22 pm »
Extended footage of the Burst Test.


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Re: Sierra Space LEO Space station
« Reply #74 on: 01/23/2024 05:31 am »
Last value shown before burst was 534 kPa (77.45 psi)
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Re: Sierra Space LEO Space station
« Reply #75 on: 01/23/2024 05:55 am »
Last value shown before burst was 534 kPa (77.45 psi)

In addition to the excitement of the test, what I understand is that Sierra is supplying the vast amount of living/work modules for Blue Origin's orbital reef and that Sierra Nevada cargo vehicle will be carried on a New Glen to supply it.  Is that correct?  But my question is, who or wat will transport the staff to and from the orbital reef?
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Offline Solarsail

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Re: Sierra Space LEO Space station
« Reply #76 on: 01/23/2024 06:58 am »
Boeing's Starliner, IIRC from BO's public material about the station.

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Re: Sierra Space LEO Space station
« Reply #77 on: 01/23/2024 01:53 pm »
Boeing's Starliner, IIRC from BO's public material about the station.

Somebody needs to inform Boeing then because the last I knew Boeing said that there is no business case for Starliner after ISS. And Boeing has shown NO interest in continuing the program.
Also AFAIK there are no plans to human rate Vulcan for post Atlas retirement.
And it is unlikely that Falcon-9 will be tasked to lift Starliner.
Maybe Blue Origin will buy Starliner from Boeing and adapt it to New Glenn?
Jeff Bazo's long term plans include flying people so perhaps purchasing Starliner would be a foot in the door. Either way I don't see Boeing being involved after the Atlas inventory is used. So either station staffing will done by SpaceX in a Dragon and/or (eventually) Starship or BO gets into the human spacecraft business by either purchasing Starliner or creating its own spacecraft from scratch.
« Last Edit: 01/23/2024 02:10 pm by clongton »
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Re: Sierra Space LEO Space station
« Reply #78 on: 01/23/2024 02:09 pm »
From the video, they expect the manned version of Dreamchaser to visit any new commercial station.
IMHO.

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Re: Sierra Space LEO Space station
« Reply #79 on: 01/23/2024 02:10 pm »
From the video, they expect the manned version of Dreamchaser to visit any new commercial station.
IMHO.

Launched on what vehicle?
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Re: Sierra Space LEO Space station
« Reply #80 on: 01/23/2024 02:13 pm »
Who knows what launch vehicle.

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Re: Sierra Space LEO Space station
« Reply #81 on: 01/23/2024 02:30 pm »
Boeing's Starliner, IIRC from BO's public material about the station.

Somebody needs to inform Boeing then because the last I knew Boeing said that there is no business case for Starliner after ISS. And Boeing has shown NO interest in continuing the program.
Also AFAIK there are no plans to human rate Vulcan for post Atlas retirement.
And it is unlikely that Falcon-9 will be tasked to lift Starliner.
Maybe Blue Origin will buy Starliner from Boeing and adapt it to New Glenn?
Jeff Bazo's long term plans include flying people so perhaps purchasing Starliner would be a foot in the door. Either way I don't see Boeing being involved after the Atlas inventory is used. So either station staffing will done by SpaceX in a Dragon and/or (eventually) Starship or BO gets into the human spacecraft business by either purchasing Starliner or creating its own spacecraft from scratch.
If a miracle occurs and Vulcan instantly ramps to a high launch cadence, Kuiper could release its eight Atlas Vs and they can be used for Starliner. I evaluate the chances of this as approximately zero, but it's still the most likely near-term alternative to Crew Dragon.

One problem with Starliner: There are only two capsules. The CCP Starliner launch-to-launch cycle is about 1 year, and Boeing's stated landing-to-launch refurbishment cycle is a bit longer than 6 months. This means that a single Starliner cannot quite handle all yearly CCP missions, so scheduling non-CCP Starliner missions before 2030 will be a challenge.

Offline GreenShrike

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Re: Sierra Space LEO Space station
« Reply #82 on: 01/23/2024 09:00 pm »
Who knows what launch vehicle.

Yeah, that's a question I've pondered before. Making station access as inexpensive as possible will help keep station utilization has high as possible, which should be a good thing.

So, do you qualify Crew DreamChaser on Vulcan? If so, you'll keep dissimilar redundancy vs. F9, but you'll need to pay to have Vulcan crew-rated, and each mission will cost more due to Vulcan's pricing vs. F9.

Or do you qualify Crew DC on Falcon 9? You'll lose dissimilar redundancy, but F9 is already crew-rated, and is a not-insignificant amount less expensive to launch than Vulcan. You may lose flights due to redundancy requirements (read: client doesn't want to launch with SpaceX), but you might gain flights because a lower cost expands your potential client pool.

Or maybe Terran-R? You retain dissimilar redundancy, and potentially have F9-like pricing, but probably pay for crew-rating, and launch on a rocket with even less flight history than Vulcan will have in 2026+.


Going forward, I think Vulcan's higher costs will bite ULA, as not every client is Amazon (or NASA, with cargo DC being on Vulcan) with enough funds to not care about several tens of millions more per flight. Less money being spent getting there means more money available to do whatever it is you're actually there for.

I think I'd primarily fly on the cheaper F9 to maximize client base and, thus, DreamChaser -- and space station! -- revenue. For insurance, I'd keep an eye on Relativity's progress, and if Terran-R looks promising, then crew-rate it and shift flights from F9 to Terran-R on an as-needed basis to maximize revenue. Else if Relativity stumbles, crew-rate Vulcan and buy an option on a flight or two as insurance, but still mostly flying F9 to the station.
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Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #83 on: 01/23/2024 11:08 pm »
Who knows what launch vehicle.

Yeah, that's a question I've pondered before. Making station access as inexpensive as possible will help keep station utilization has high as possible, which should be a good thing.

So, do you qualify Crew DreamChaser on Vulcan? If so, you'll keep dissimilar redundancy vs. F9, but you'll need to pay to have Vulcan crew-rated, and each mission will cost more due to Vulcan's pricing vs. F9.

Or do you qualify Crew DC on Falcon 9? You'll lose dissimilar redundancy, but F9 is already crew-rated, and is a not-insignificant amount less expensive to launch than Vulcan. You may lose flights due to redundancy requirements (read: client doesn't want to launch with SpaceX), but you might gain flights because a lower cost expands your potential client pool.

Or maybe Terran-R? You retain dissimilar redundancy, and potentially have F9-like pricing, but probably pay for crew-rating, and launch on a rocket with even less flight history than Vulcan will have in 2026+.


Going forward, I think Vulcan's higher costs will bite ULA, as not every client is Amazon (or NASA, with cargo DC being on Vulcan) with enough funds to not care about several tens of millions more per flight. Less money being spent getting there means more money available to do whatever it is you're actually there for.

I think I'd primarily fly on the cheaper F9 to maximize client base and, thus, DreamChaser -- and space station! -- revenue. For insurance, I'd keep an eye on Relativity's progress, and if Terran-R looks promising, then crew-rate it and shift flights from F9 to Terran-R on an as-needed basis to maximize revenue. Else if Relativity stumbles, crew-rate Vulcan and buy an option on a flight or two as insurance, but still mostly flying F9 to the station.

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
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Re: Sierra Space LEO Space station
« Reply #84 on: 01/24/2024 12:16 am »
They REALLY had to get a insult in at the end of the video "We are not a company that thinks we oughta leave the planet"


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Re: Sierra Space LEO Space station
« Reply #85 on: 01/24/2024 12:20 am »
Who knows what launch vehicle.

Yeah, that's a question I've pondered before. Making station access as inexpensive as possible will help keep station utilization has high as possible, which should be a good thing.

So, do you qualify Crew DreamChaser on Vulcan? If so, you'll keep dissimilar redundancy vs. F9, but you'll need to pay to have Vulcan crew-rated, and each mission will cost more due to Vulcan's pricing vs. F9.

Or do you qualify Crew DC on Falcon 9? You'll lose dissimilar redundancy, but F9 is already crew-rated, and is a not-insignificant amount less expensive to launch than Vulcan. You may lose flights due to redundancy requirements (read: client doesn't want to launch with SpaceX), but you might gain flights because a lower cost expands your potential client pool.

Or maybe Terran-R? You retain dissimilar redundancy, and potentially have F9-like pricing, but probably pay for crew-rating, and launch on a rocket with even less flight history than Vulcan will have in 2026+.


Going forward, I think Vulcan's higher costs will bite ULA, as not every client is Amazon (or NASA, with cargo DC being on Vulcan) with enough funds to not care about several tens of millions more per flight. Less money being spent getting there means more money available to do whatever it is you're actually there for.

I think I'd primarily fly on the cheaper F9 to maximize client base and, thus, DreamChaser -- and space station! -- revenue. For insurance, I'd keep an eye on Relativity's progress, and if Terran-R looks promising, then crew-rate it and shift flights from F9 to Terran-R on an as-needed basis to maximize revenue. Else if Relativity stumbles, crew-rate Vulcan and buy an option on a flight or two as insurance, but still mostly flying F9 to the station.

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing. Starship will not be able to launch Crewed DC.

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Re: Sierra Space LEO Space station
« Reply #86 on: 01/24/2024 11:49 am »
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing. Starship will not be able to launch Crewed DC.
Have SNC confirmed DC200 must be launched unfaired?
Of the three human spaceflight systems currently in active operation, two of them are faired and retain abort capability, so keeping crew vehicles unfaired is not a hard requirement. It would require a custom fairing (for abort motor mounts and vehicle links) that may need modification to mate with different launch vehicles, but customisation for different launch vehicles would be required anyway even if unfaired, to handle the aerodynamic asymmetry issue, and to handle different abort mode requirements for different vehicle ascent profiles.

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Re: Sierra Space LEO Space station
« Reply #87 on: 01/24/2024 12:56 pm »
They REALLY had to get a insult in at the end of the video "We are not a company that thinks we oughta leave the planet"

It wasn't an insult. It was a statement of company goals. They want to create an orbital research outpost which focuses on earth-based needs that can only be properly addressed in microgravity.
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Re: Sierra Space LEO Space station
« Reply #88 on: 01/24/2024 01:37 pm »
They REALLY had to get a insult in at the end of the video "We are not a company that thinks we oughta leave the planet"

It wasn't an insult. It was a statement of company goals. They want to create an orbital research outpost which focuses on earth-based needs that can only be properly addressed in microgravity.
Exactly, there's this thing that companies like to do and say that makes them stand out from the crowd, it gets them attention and hopefully business. It's pretty normal in all types of business.

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Re: Sierra Space LEO Space station
« Reply #89 on: 01/24/2024 01:39 pm »
And about the "benefiting Earth by what we're doing in space" statements, that's basically what Blue Origin says as well, and as we know, Sierra Space and Blue Origin are working closely together here.
« Last Edit: 01/24/2024 01:39 pm by chopsticks »

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #90 on: 01/24/2024 03:20 pm »

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing.

I don't see why it would not be able to.
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Re: Sierra Space LEO Space station
« Reply #91 on: 01/24/2024 03:33 pm »

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing.
I don't see why it would not be able to.
I think this implies a non-reusable US, which in turn affects the ultimate cost. It would compete with F9/Crew Dragon and with Starliner/Atlas, but not with the eventual crewed Starship.

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #92 on: 01/24/2024 04:03 pm »

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing.
I don't see why it would not be able to.
I think this implies a non-reusable US, which in turn affects the ultimate cost. It would compete with F9/Crew Dragon and with Starliner/Atlas, but not with the eventual crewed Starship.

As-is, New Glenn does not have a reusable upper stage.
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Re: Sierra Space LEO Space station
« Reply #93 on: 01/24/2024 04:09 pm »

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing.
I don't see why it would not be able to.
I think this implies a non-reusable US, which in turn affects the ultimate cost. It would compete with F9/Crew Dragon and with Starliner/Atlas, but not with the eventual crewed Starship.
As-is, New Glenn does not have a reusable upper stage.
Yep. I considered that. Unfortunately the name "New Glenn" by itself can mean either the initial partially-reusable version or the eventual fully-reusable version. The typical payload will eventually benefit from full reusability. DC will not, and this may affect the long-term viability of DC.

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #94 on: 01/24/2024 04:15 pm »

Tory Bruno has said that the Vulcan was designed and built with crew rating in mind / lessons learned from Atlas V crew rating, so I expect it should be a very straightforward process should anyone want to launch a crew vehicle on Vulcan.

One you forgot - New Glenn was also designed with crew rating in mind. Their big launch tower at LC-36 has crew access pathways built in. New Glenn should be significantly cheaper than Vulcan as well.
Can NG launch crewed DC? Crewed DC needs to be "naked". Not inside a fairing.
I don't see why it would not be able to.
I think this implies a non-reusable US, which in turn affects the ultimate cost. It would compete with F9/Crew Dragon and with Starliner/Atlas, but not with the eventual crewed Starship.
As-is, New Glenn does not have a reusable upper stage.
Yep. I considered that. Unfortunately the name "New Glenn" by itself can mean either the initial partially-reusable version or the eventual fully-reusable version. The typical payload will eventually benefit from full reusability. DC will not, and this may affect the long-term viability of DC.

You should probably specify when you mean some notional future New Glenn rather than the current design.
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Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #95 on: 01/24/2024 04:52 pm »
Have SNC confirmed DC200 must be launched unfaired?
Of the three human spaceflight systems currently in active operation, two of them are faired and retain abort capability, so keeping crew vehicles unfaired is not a hard requirement. It would require a custom fairing (for abort motor mounts and vehicle links) that may need modification to mate with different launch vehicles, but customisation for different launch vehicles would be required anyway even if unfaired, to handle the aerodynamic asymmetry issue, and to handle different abort mode requirements for different vehicle ascent profiles.

Sierra Space's VP of Mission Assurance confirms that DC200 must have its wings 'fixed' for abort.



Also on their website:

Quote
Sierra Space’s DC-200 crewed spaceplane variant will be launched in a similar configuration but without a fairing, which will still offer protection from debris since the rocket will be located below the vehicle.
« Last Edit: 01/24/2024 04:53 pm by StraumliBlight »

Offline Zed_Noir

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Re: Sierra Space LEO Space station
« Reply #96 on: 01/24/2024 08:01 pm »
Someone at Sierra Space need to make a decision soon about which launcher is the Dreamchaser series 200 vehicles are launching on.

There is currently only one choice that is cheap and launches frequently. Other choices is much more expensive on brand new or yet to fly launchers that already has big manifests.

So in summary there isn't really an alternative to the folks from Hawthorne if you want to launch a crew vehicle safely, cheap and often, IMO. Maybe a second launch provider might be added later for pricey redundancy. However the beancounters will likely objected that adding a new launcher is costly and comes with unproven launch reliability.

Offline abaddon

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Re: Sierra Space LEO Space station
« Reply #97 on: 01/24/2024 09:57 pm »
Back in 2014 Sierra Nevada bid $3.3 billion dollars for CCtCAP for DreamChaser Crew (compared to $4.2 billion for Boeing and $2.6 billion for SpaceX).  SNC later received a $1.4 billion investment in Series A funding it is using to continue development on DreamChaser Crew (although it seems a large amount of that is directed towards station development), but as far as I am aware there have been no other large infusions of cash to fund DreamChaser Crew.  Most of the focus of the company (rightly so) has been on getting DreamChaser cargo, which is fully funded, off the ground.

The discussion over picking and crew-rating a launcher seems to be putting the cart before the horse to me; where is SNC going to get the billions of additional funding to complete and crew rate the DreamChaser itself?  Compared to that shortfall, paying for crew-rating a launcher is small potatoes.

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #98 on: 01/24/2024 10:00 pm »
Someone at Sierra Space need to make a decision soon about which launcher is the Dreamchaser series 200 vehicles are launching on.

There is currently only one choice that is cheap and launches frequently. Other choices is much more expensive on brand new or yet to fly launchers that already has big manifests.

So in summary there isn't really an alternative to the folks from Hawthorne if you want to launch a crew vehicle safely, cheap and often, IMO. Maybe a second launch provider might be added later for pricey redundancy. However the beancounters will likely objected that adding a new launcher is costly and comes with unproven launch reliability.

It appears that Sierra is working towards a late 2026 launch debut for DC-200 (see link below), but I doubt that will hold. I'm not sure when they need to decide on an LV, but I think they might favor Vulcan, depending how smoothly their cargo flights go.

https://spaceref.com/newspace-and-tech/sierra-space-working-with-nasa-on-crewed-dream-chaser/
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Offline chopsticks

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Re: Sierra Space LEO Space station
« Reply #99 on: 01/24/2024 10:50 pm »
Yeah I'm thinking Vulcan or New Glenn.

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Re: Sierra Space LEO Space station
« Reply #100 on: 01/24/2024 10:51 pm »
DC-200 specific crew access arm construction at a launchpad will be a dead giveaway of who they would attempt to certify with. SpaceX would have to mod their arm, Vulcan has provisioning for a crew access arm, but there doesn't seem to be yet talk about it being multi-tenant/multi-vehicle adaptable.

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #101 on: 01/25/2024 05:08 pm »
DC-200 specific crew access arm construction at a launchpad will be a dead giveaway of who they would attempt to certify with. SpaceX would have to mod their arm, Vulcan has provisioning for a crew access arm, but there doesn't seem to be yet talk about it being multi-tenant/multi-vehicle adaptable.

I would think the announcement of a launch provider would happen long before an access arm was built.
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Offline clongton

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Re: Sierra Space LEO Space station
« Reply #102 on: 01/25/2024 09:09 pm »
The discussion over picking and crew-rating a launcher seems to be putting the cart before the horse to me; where is SNC going to get the billions of additional funding to complete and crew rate the DreamChaser itself?  Compared to that shortfall, paying for crew-rating a launcher is small potatoes.

It depends in large part on the owners of the company, Eren Ozmen & Fatih Ozmen, and how committed they are to developing a crew-rated spacecraft. While they do not have as deep pockets as Elon Musk does, they are independently wealthy enough to take a similar path as he did and self-fund that effort. But before they do that I would think that they would need to nail down what launch vehicle to use. The entire future of the Dreamchaser spacecraft, crewed or not, comes down to that choice.

Of course, given the shaky future of Starliner, NASA might be interested in helping to fund that effort once Dreamchaser 200 has demonstrated a couple of safe flights. Boeing is unlikely to continue the Starliner program after ISS but NASA will still need redundant crew access to LEO and the commercial stations that are planned.
« Last Edit: 01/25/2024 09:15 pm by clongton »
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Offline abaddon

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Re: Sierra Space LEO Space station
« Reply #103 on: 01/25/2024 09:21 pm »
The discussion over picking and crew-rating a launcher seems to be putting the cart before the horse to me; where is SNC going to get the billions of additional funding to complete and crew rate the DreamChaser itself?  Compared to that shortfall, paying for crew-rating a launcher is small potatoes.

It depends in large part on the owners of the company, Eren Ozmen & Fatih Ozmen, and how committed they are to developing a crew-rated spacecraft. While they do not have as deep pockets as Elon Musk does, they are independently wealthy enough to take a similar path as he did and self-fund that effort. But before they do that I would think that they would need to nail down what launch vehicle to use. The entire future of the Dreamchaser spacecraft, crewed or not, comes down to that choice.
Elon did not self-fund Crew Dragon, SpaceX won a $2.6 billion dollar contract from NASA to develop and certify it.  I don't think it's realistic to think Sierra Nevada can or will self-fund the $3.3 billion SNC bid for CCtCAP to develop and certify DreamChaser crew.  I guess YYMV.
Quote
Of course, given the shaky future of Starliner, NASA might be interested in helping to fund that effort once Dreamchaser 200 has demonstrated a couple of safe flights.
Do you mean DreamChaser cargo?  DreamChaser 200 doesn't exist and suggesting NASA will fund it after it exists doesn't help with the funding to bring it into existence.  What am I missing?

In any case, NASA wants to do lots of things, but it needs congressional appropriation to fund it.  Maybe NASA will be able to get Congress to sign off on a new crewed transportation development on-ramp; I tend to think Congress would look at the ~$5 billion NASA will have spent for six measly Starliner flights in this scenario and take a hard look at the billions more required to develop and certify DC200.  It'd make more sense to just hold their noses and pay for more Starliner flights, honestly.
« Last Edit: 01/25/2024 09:34 pm by abaddon »

Offline Zed_Noir

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Re: Sierra Space LEO Space station
« Reply #104 on: 01/25/2024 09:29 pm »
The discussion over picking and crew-rating a launcher seems to be putting the cart before the horse to me; where is SNC going to get the billions of additional funding to complete and crew rate the DreamChaser itself?  Compared to that shortfall, paying for crew-rating a launcher is small potatoes.

It depends in large part on the owners of the company, Eren Ozmen & Fatih Ozmen, and how committed they are to developing a crew-rated spacecraft. While they do not have as deep pockets as Elon Musk does, they are independently wealthy enough to take a similar path as he did and self-fund that effort. But before they do that I would think that they would need to nail down what launch vehicle to use. The entire future of the Dreamchaser spacecraft, crewed or not, comes down to that choice.

Recall there was some bad blood between the Ozmens and Musk in the past.

However if the Ozmens wants the Dreamchaser 200 (crew-rated) to happen. They have to consider the cost, reliability and availability of a launcher for the Dreamchaser 200. The launcher choice will likely impact on getting customers and overall vehicle development cost. The Ozmens don't have spare cash for the luxury of a no SpaceX policy like Jeff Bezos did with Project Kuiper.

It was a mistake in hindsight with the cargo Dreamchaser launching on the Vulcan. Which is late and and have a manifest backlog along with a higher launch cost.
 

Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #105 on: 01/25/2024 10:51 pm »
Sierra Space raised $1.4 billion in November 2021, and $290 million in a second funding round in September 2023. Presumably a chunk of that $1.7 billion is going to DC-200.
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Offline abaddon

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Re: Sierra Space LEO Space station
« Reply #106 on: 01/26/2024 02:09 am »
Sierra Space raised $1.4 billion in November 2021, and $290 million in a second funding round in September 2023. Presumably a chunk of that $1.7 billion is going to DC-200.
I already wrote about that above.  $1.7 billion is a fair amount short of $3.3 billion, and much of that is likely going to space station development (e.g. see recent burst tests).  Has any other funding source been disclosed?
« Last Edit: 01/26/2024 02:10 am by abaddon »

Offline Tywin

Re: Sierra Space LEO Space station
« Reply #107 on: 01/26/2024 03:18 am »
I think so the only option for see the DC-200 Crew, is to go public with Sierra Space*, and Sierra make AC, with new fund of the investors to give that money...

But I don't see the Dream Chaser crew, without the Orbital Reef, this have to came first...

*Even the webiste of Sierra, have a "rare" section of investors, no very normal in a private company, and they make the spin-off from Sierra Nevada Corportion, with this idea in mind for the future...

https://www.sierraspace.com/leadership/#investors

Will see...
« Last Edit: 01/26/2024 03:23 am by Tywin »
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Offline Tywin

Re: Sierra Space LEO Space station
« Reply #108 on: 01/26/2024 03:25 am »
The discussion over picking and crew-rating a launcher seems to be putting the cart before the horse to me; where is SNC going to get the billions of additional funding to complete and crew rate the DreamChaser itself?  Compared to that shortfall, paying for crew-rating a launcher is small potatoes.

It depends in large part on the owners of the company, Eren Ozmen & Fatih Ozmen, and how committed they are to developing a crew-rated spacecraft. While they do not have as deep pockets as Elon Musk does, they are independently wealthy enough to take a similar path as he did and self-fund that effort. But before they do that I would think that they would need to nail down what launch vehicle to use. The entire future of the Dreamchaser spacecraft, crewed or not, comes down to that choice.

Recall there was some bad blood between the Ozmens and Musk in the past.

However if the Ozmens wants the Dreamchaser 200 (crew-rated) to happen. They have to consider the cost, reliability and availability of a launcher for the Dreamchaser 200. The launcher choice will likely impact on getting customers and overall vehicle development cost. The Ozmens don't have spare cash for the luxury of a no SpaceX policy like Jeff Bezos did with Project Kuiper.

It was a mistake in hindsight with the cargo Dreamchaser launching on the Vulcan. Which is late and and have a manifest backlog along with a higher launch cost.

Can you share this bad blood between the Ozmen and Musk?
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Offline Tywin

Re: Sierra Space LEO Space station
« Reply #109 on: 01/26/2024 03:28 am »
Other option, I'm always think so, is to make FIRST, the DC-300 the militar version, now the Space Force have BIG pocket, and maybe they want some of this space plane in the future...

With this money, maybe Sierra, can finance, the DC-200...
« Last Edit: 01/26/2024 03:30 am by Tywin »
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Offline Solarsail

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Re: Sierra Space LEO Space station
« Reply #110 on: 02/05/2024 05:31 am »
Well, I found the artist's impression of Orbital Reef:  There's a CST-100 docked to it, and the article makes ambiguous reference to Boeing being involved.

https://spacenews.com/orbital-reef-passes-nasa-review/  (From 2022)

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Re: Sierra Space LEO Space station
« Reply #111 on: 02/05/2024 05:47 am »
Well, I found the artist's impression of Orbital Reef:  There's a CST-100 docked to it, and the article makes ambiguous reference to Boeing being involved.

https://spacenews.com/orbital-reef-passes-nasa-review/  (From 2022)

Quote
Several other companies and organizations will participate on Orbital Reef. Boeing will provide a science module and its CST-100 Starliner crew vehicle, as well as handling station operations, maintenance and engineering

Boeing is mentioned in this video (CST-100 and the science module)

« Last Edit: 02/05/2024 05:52 am by catdlr »
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Offline daedalus1

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Re: Sierra Space LEO Space station
« Reply #112 on: 02/05/2024 06:36 am »
It won't be able to compete with other stations that use the much cheaper Dragon transport.

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Re: Sierra Space LEO Space station
« Reply #113 on: 02/05/2024 07:04 am »
It won't be able to compete with other stations that use the much cheaper Dragon transport.

It's becoming (in a simple way):

1) Blue Origin Main structure, Sierra Space (cargo), Boeing (Crew)

2) Axiom's main structure with SpaceX (Crew and Cargo)

3) Starlab would utilize StarShip for the main structure transport to space with Dragon for the crew.
« Last Edit: 02/05/2024 07:05 am by catdlr »
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Offline whitelancer64

Re: Sierra Space LEO Space station
« Reply #114 on: 02/20/2024 02:37 pm »
Looks like they are thinking about sizing for New Glenn and Starship
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Offline Lee Jay

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Re: Sierra Space LEO Space station
« Reply #115 on: 02/20/2024 05:06 pm »
I want to repeat something I've said before.  I got a chance to visit SNC's (before the name change) press event for LIFE (now LIFE 1.0).  It's HUGE.  It was three levels and felt a lot like the inside of my two-story + basement house.  These larger ones, if they ever exist, will feel like auditoriums.
« Last Edit: 02/20/2024 05:06 pm by Lee Jay »

Offline Tywin

Re: Sierra Space LEO Space station
« Reply #116 on: 02/21/2024 12:25 am »
I want to repeat something I've said before.  I got a chance to visit SNC's (before the name change) press event for LIFE (now LIFE 1.0).  It's HUGE.  It was three levels and felt a lot like the inside of my two-story + basement house.  These larger ones, if they ever exist, will feel like auditoriums.

Mass tourism...time for Blue to scale up Clipper, or create something bigger that the crew Dream Chaser...
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Offline acksed

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Re: Sierra Space LEO Space station
« Reply #117 on: 02/21/2024 08:49 pm »
There's another application for the mondo 19m-wide 3.0 hab. I punched the numbers into SpinCalc (https://artificial-gravity.com/sw/SpinCalc/SpinCalc.htm) and if you spun the 3.0 up to 5.9 rpm, you would just about get Mars gravity of 0.38g on the inside. That's on the edge of adaptability, but not insurmountable.

At a conservative estimate, the lateral surface area of a cylinder 18m in diameter and 20m long is 1,130 square metres.

Voila! Mars settlement simulation to investigate the biological effects of Mars gravity. Or a grav-accurate The Martian cosplay.

I have a silly idea of having a whole chain of them lined up like wheels in an inline skate, counter-rotating in pairs on a framework/scaffold to prevent them suddenly inverting.

This may be the first step to the old SF book Ganny Knits A Spaceship. :-)
« Last Edit: 02/22/2024 12:23 am by acksed »

Offline Oersted

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Re: Sierra Space LEO Space station
« Reply #118 on: 03/17/2024 06:17 pm »
Burst test:
https://www.nasaspaceflight.com/2024/03/commercial-station-roundup/

Impressive looking hardware and very nice video, good production values.

I did not at all like the final dig at SpaceX: "...some other companies want to escape Earth..."
- Obviously non-sensical, since the SpaceX Mars project does not at all imply that they want to abandon Earth, which is a ludicrous idea. - I wonder why Sierra needs to make that dig and lets it through in a video (so, produced and verified, and not just a slip of the tongue).

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #119 on: 05/01/2024 11:03 am »
Sierra Space's blog yesterday published an extensive article on the LIFE module: https://www.sierraspace.com/newsroom/blog/building-the-worlds-first-commercial-space-station/.

Excerpt:
Quote
LIFE’s Testing Status

Our LIFE technology is decades in the making. Backed by a talented and driven team of engineers and scientists, our goal is to reach structural perfection in the near future.

We have gone through a lengthy development journey including numerous stress tests to make this a reality.

A stress test assesses the structure’s resilience under the most extreme conditions. Previous tests, such as the Ultimate Burst Pressure (UBP) test, dealt with the maximum pressure that the inflatable craft could contain—all of which were overwhelmingly successful.

During a UBP test, the teams inflate the test article until it fails, which helps determine how strong its softgoods materials would be under extreme stresses in the harsh environment of space.

Our team achieved a groundbreaking UBP milestone in December by successfully designing, manufacturing, assembling, and testing our first full-scale LIFE 285, expandable space station structure. The test unit stood over 20’ tall (comparable in size to an average family home) and was 1/3 the volume of the International Space Station. Test results exceeded NASA’s recommended x4 safety levels by 27%.

We also conducted Accelerated Systematic sub scale (LIFE10) creep tests, which determined the maximum time that the softgoods structure could withstand high pressure to calculate overall life expectancy in years. Sierra Space’s and NASA’s suggested guideline targets were short and medium duration tests based on 100 and 1,000 hours, and our softgoods shell lasted well over 150 hours on the short duration and met the medium duration performance expectations, marking a huge step in the future of human space habitation.

Our team is continuing to push the boundaries of the softgoods inflatable habitat technology by leveraging advancements in LIFE 10 (10 cubic meters) LIFE 285 (285 cubic meters) and now introducing LIFE 500 (500 cubic meters). We will continue to conduct test campaigns in 2024 and early 2025 by testing two LIFE 10, two LIFE 285, and one LIFE 500.

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #120 on: 05/02/2024 04:26 pm »
Today's Sierra Space press release on LIFE module testing. Excerpt:
Quote
Sierra Space Continues to Lead the Industry in the Development of the First Business-Ready Commercial Space Station

Sierra Space, a leading commercial space-tech company and next generation defense-tech prime building a platform in space to benefit life on Earth and protect the freedom of economic activity in the Orbital Age®, announced today that its expandable space station technology is scheduled for its seventh key validation test, and second full-scale structural test, this June at NASA’s Marshall Space Flight Center in Huntsville, Ala.

Completion of successful testing next month will accelerate this innovative technology to on-orbit operations. The test article in the company’s historic first full-scale burst test last December reached 77 psi before it burst, which well exceeded (+27%) NASA’s recommended level of 60.8 psi (maximum operating pressure of 15.2 psi multiplied by a safety factor of four). Sierra Space is the only space company that has advanced to full-scale structural testing of commercial space station technology.

The company’s second full-scale test next month will be another Ultimate Burst Pressure (UBP) test to validate the technology’s ability to perform flawlessly in the unforgiving conditions of space. The test article, currently in assembly, is equivalent to one third the volume of the entire International Space Station (ISS).

The upcoming test will also mark another milestone in Sierra Space’s co-development of Orbital Reef with Blue Origin, along with the technical maturation of its LIFE® (Large Integrated Flexible Environment) product line of expandable “softgoods” modules. The modules are launched (packed) inside a standard rocket fairing and can expand up to 6x in size once on orbit. The LIFE pressure shell is constructed of high-strength woven fabric materials, or softgoods, consisting primarily of Vectran, which form rigid structures when pressurized on orbit.

In addition to this technology being used by Sierra Space and Blue Origin as part of their Orbital Reef partnership, it will also be employed by Sierra Space for the company’s pathfinder space station, which will be focused on biotech use cases.
https://www.sierraspace.com/newsroom/press-releases/sierra-space-leads-in-the-development-of-the-first-business-ready-commercial-space-station/

Sierra Space has recently changed the size sequence of its modules, under construction as well as planned. On this occasion it has also changed their designations. They will now be: 

LIFE 285 (previously: LIFE 1)
LIFE 500
LIFE 1400
LIFE 5000

These numbers refer to the volume of the modules in cubic metres.

Offline Robert_the_Doll

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Re: Sierra Space LEO Space station
« Reply #121 on: 05/31/2024 04:45 pm »
https://x.com/SierraSpaceCo/status/1796568484199219350
Quote
Our team is preparing for the second LIFE 285 full-scale burst test of our space station technology at @NASA_Marshall in June. The full-scale test article features an updated blanking plate design and interface, along with improvements in manufacturing, assembly, and integration.


Offline JSz

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Re: Sierra Space LEO Space station
« Reply #122 on: 05/31/2024 09:15 pm »
Yesterday's Sierra Space update: https://www.sierraspace.com/press-releases/sierra-space-selects-japanese-passive-docking-system-for-its-commercial-space-station-design/

Quote
Sierra Space, a leading commercial space company and emerging defense tech prime building a platform in space to benefit and protect life on Earth, announced today its collaboration with Japan-based partners on a cutting-edge passive docking system, or PDS, that will be integrated into the company’s new commercial space station platform. The system is being developed jointly by IHI Aerospace Co., Ltd., a principal contributor to Japan’s space engineering expertise, and Kanematsu Corporation, a global trading powerhouse.

The new PDS system – an integral element facilitating secure and efficient spacecraft docking including with Sierra Space’s Dream Chaser® spaceplane – will be developed in accordance with the International Docking System Standard (IDSS). IHI Aerospace’s solution is designed to offer simplicity, versatility and utmost reliability in space docking operations.

(...)

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #123 on: 06/13/2024 03:27 pm »
Work on the LIFE module: https://x.com/SierraSpaceCo/status/1800902750374645925
Quote
Our LIFE285 Ultimate Burst Pressure test article's softgoods integration instrumentation, painting and photogrammetry preparation has been completed. The test article passed a rigorous inspection prior to being transported for a low pressurization test located at @NASA_Marshall.

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #124 on: 06/19/2024 07:37 pm »
More news from the testing of the full-size LIFE module model - the second test is coming up:
Quote
We are "bursting" with enthusiasm at @NASA_Marshall - where we are set for a historic second full-scale burst test of our inflatable space station technology.

https://twitter.com/SierraSpaceCo/status/1803167764833771556
« Last Edit: 06/19/2024 07:39 pm by JSz »

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Re: Sierra Space LEO Space station
« Reply #125 on: 07/25/2024 10:23 am »
Second Full-Scale Inflatable Space Station Burst Test at NASA Marshall Space Flight Center

Quote
Jul 25, 2024
Sierra Space, a leading commercial space-tech company that is Building a Platform in Space to Benefit Life on Earth®, announced today that its expandable space station technology successfully passed a seventh key validation test, and second full-scale structural test, at NASA’s Marshall Space Flight Center in Huntsville, Alabama. The results herald a giant leap towards building the world’s first end-to-end business and technology platform in Low Earth Orbit, enabling humanity to find the answers to some of the toughest problems faced on Earth.

Completion of the successful Ultimate Burst Pressure test, which occurred on June 18 in collaboration with ILC Dover Astrospace and NASA, accelerates Sierra Space’s revolutionary softgoods technology towards on-orbit operations. Planned for an initial stand-alone pathfinder mission before the end of the decade, the technology will also feature as a key element of the Orbital Reef commercial space station. The test will close out Milestone #8 for Orbital Reef with Blue Origin under NASA’s Commercial Low Earth Orbit Development Program.

« Last Edit: 07/25/2024 10:25 am by catdlr »
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Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #126 on: 07/25/2024 10:30 am »
Sierra Space Heralds Giant Leap in Microgravity Research and Manufacturing with Historic Test of Expandable Space Station Technology

Quote
The latest test by the numbers:

 • Company’s second Ultimate Burst Pressure test of a full-size, inflatable space station structure occurred on June 18
 • Test unit stood over 20’ tall and was comparable in size to an average family home
 • The article was 300 m³ in volume, or 1/3rd the volume of the International Space Station
 • Test results exceeded NASA’s recommended x4 safety levels by 22%
 • Two 4-ft x 4-ft steel blanking plates were integrated into the highest loaded cylinder section of the article; both were 50 lbs. lighter than the ones used in the first full-scale test and accommodate larger windows

The test article in the company’s historic first full-scale burst test last December peaked at 77 psi, which well exceeded (+27%) NASA’s recommended level of 60.8 psi (maximum operating pressure of 15.2 psi multiplied by a safety factor of four). This most recent test in June showed similar results – within five percent of the pressure loading of December’s test article – with this one reaching 74 psi, exceeding NASA’s 4x safety factor by 22 percent. These back-to-back test results accelerate Sierra Space’s path to flight certification, verifying scalability for 10 cubic-meter and up to 1,400 cubic-meter structures based on the company’s current softgoods inflatable architecture. Sierra Space is currently gearing up for a first test of its 500 cubic-meter space station technology next year.

“No other company is moving at the speed of Sierra Space to develop actual hardware, stress-tested at full scale, and demonstrate repeatability. We’ve taken a softgoods system that very few companies around the world have been able to design, and now we have consistent, back-to-back results,” said Shawn Buckley, VP of Earthspace™ Systems, Space Stations, at Sierra Space. “A second successful full-scale test is an absolute game changer. We now know it’s possible to equal or surpass the total habitable volume of the entire International Space Station, in a single launch.”

The test article once again included two four-foot by four-foot blanking plates – metallic structures inserted into the softgoods shell to emulate a future design component, such as a window, robotic arm or antenna attachment point. They were 50 pounds lighter than the ones used in the first full-scale test and designed to accommodate larger windows.

In the ever-evolving landscape of space exploration and commercialization, Sierra Space’s Large Integrated Flexible Environment (LIFE®) technology stands as a pioneering concept that will reshape how humans live and work in space. LIFE launches on a conventional rocket and inflates on orbit. The first LIFE product in the roadmap is a large, three-story structure that is 27 feet in diameter. It can comfortably sleep four astronauts, with additional room for science experiments, exercise equipment, a medical center and Astro Garden® system, which can grow fresh produce for astronauts on long-duration space missions.
« Last Edit: 07/25/2024 10:33 am by StraumliBlight »

Offline DanClemmensen

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Re: Sierra Space LEO Space station
« Reply #127 on: 07/25/2024 01:16 pm »
How will a LIFE module be fitted out after it is inflated in space? As described, it appears to be a 9 meter diameter, 6-meter tall balloon with a small hatch at each end. But that big empty space is not good for much until stuff is installed in it. Will this stuff be launched on separate cargo missions? What are the max dimensions of an object that can be brought through the hatch?

Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #128 on: 07/26/2024 01:58 pm »
NASA Supports Burst Test for Orbital Reef Commercial Space Station



Quote
NASA, Sierra Space, and ILC Dover recently conducted the second full-scale ultimate burst pressure test on Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat using testing capabilities at NASA’s Marshall Space Flight Center in Huntsville, Alabama.
« Last Edit: 07/26/2024 02:03 pm by StraumliBlight »

Offline Tywin

Re: Sierra Space LEO Space station
« Reply #129 on: 07/28/2024 05:42 pm »
Is there any update on which launcher will be used for the LIFE test mission in 2025?
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Offline JSz

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Re: Sierra Space LEO Space station
« Reply #130 on: 07/28/2024 08:22 pm »
I don't know yet, of course, but LIFE is to be part of the Orbital Reef station being built by the Blue Orgin and Sierra Space consortium. And since the fairing needed is supposed to be 5m, it looks like the most likely rocket will be New Glenn. And if Blue can't make it with New Glenn, there will be ULA's Vulcan on hand, in which Blue has its fair share. I rather don't expect any surprises.

Offline Robert_the_Doll

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Re: Sierra Space LEO Space station
« Reply #131 on: 08/07/2024 01:32 pm »
Video only.

https://x.com/SierraSpaceCo/status/1821146885488337307

Quote
Last month, we announced the second successful LIFE 285 Ultimate Burst Pressure test. The second test was within 5% of the the first test result, with this test article reaching 74 psi, exceeding NASA’s 4x safety factor by 22 percent.

Full video: https://bit.ly/4fC7S62



Quote
Sierra Space, a leading commercial space-tech company that is Building a Platform in Space to Benefit Life on Earth®, announced today that its expandable space station technology successfully passed a seventh key validation test, and second full-scale structural test, at NASA’s Marshall Space Flight Center in Huntsville, Alabama. The results herald a giant leap towards building the world’s first end-to-end business and technology platform in Low Earth Orbit, enabling humanity to find the answers to some of the toughest problems faced on Earth.

Completion of the successful Ultimate Burst Pressure test, which occurred on June 18 in collaboration with ILC Dover Astrospace and NASA, accelerates Sierra Space’s revolutionary softgoods technology towards on-orbit operations. Planned for an initial stand-alone pathfinder mission before the end of the decade, the technology will also feature as a key element of the Orbital Reef commercial space station. The test will close out Milestone #8 for Orbital Reef with Blue Origin under NASA’s Commercial Low Earth Orbit Development Program.

Offline seb21051

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Re: Sierra Space LEO Space station
« Reply #132 on: 08/08/2024 02:16 am »
Lets hope they don't buy their valves from the same place as Boeing.

Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #133 on: 10/31/2024 04:44 pm »
https://twitter.com/SierraSpaceCo/status/1851955043932451259

Quote
We are in the final steps of softgoods certification for our LIFE 10 pressure shell test. Since 2022, we have surpassed NASA’s certification recommendations on six sub-scale inflatable units.

Life Space Habitat
« Last Edit: 10/31/2024 06:42 pm by StraumliBlight »

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #134 on: 10/31/2024 06:08 pm »
« Last Edit: 10/31/2024 06:09 pm by JSz »

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Re: Sierra Space LEO Space station
« Reply #135 on: 11/20/2024 12:20 pm »
Sierra Space’s Commercial Space Station Technology Nears Certification

Quote

Nov 20, 2024
We have successfully completed our sixth stress test and fourth Ultimate Burst Pressure (UBP) test for our LIFE® 10 commercial space station technology, achieving a rupture at 255 psi, the highest pressure yet.

This test exceeded NASA's Factor of Safety recommendations, demonstrating a safety factor greater than 16x in Low Earth Orbit (LEO) and 23x in lunar environments.

Our team continues to lead in the development of expandable structures for various space applications, as we build the world's first commercial space station.

Press Release: https://www.sierraspace.com/press-releases/sierra-spaces-commercial-space-station-technology-nears-certification/

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Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #136 on: 12/06/2024 09:12 pm »


Quote
In this virtual field trip, Sierra Space engineer and program manager Beth Licavoli will walk us through the production of the inflatable habitat, explain how they test the structure of the habitat, and give us a tour inside a fully inflated habitat.

« Last Edit: 12/08/2024 11:30 pm by StraumliBlight »

Offline JSz

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Re: Sierra Space LEO Space station
« Reply #137 on: 12/06/2024 09:32 pm »
Similar interior habitat mock-ups were boasted by Robert Bigelow a few (dozen) years ago. I would not want the stations currently under construction to suffer a similar fate....

Pictured below: inside Bigelow's station mock-up Alpha (from 2011).

Offline edzieba

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Re: Sierra Space LEO Space station
« Reply #138 on: 12/11/2024 11:18 am »
Interesting that both Bigelow and now Sierra both lay out their floors longitudinally rather than radially. Could just be that it makes housing the ground test articles easier (your warehouse doe snot have to be as high) or is there some additional research on microgravity volumes pointing towards long volumes with 'arched' walls/ceilings over squatter volumes with cylindrical walls?

Offline Lee Jay

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Re: Sierra Space LEO Space station
« Reply #139 on: 12/11/2024 01:59 pm »
Interesting that both Bigelow and now Sierra both lay out their floors longitudinally rather than radially.

It's always been that way.

https://forum.nasaspaceflight.com/index.php?topic=53484.msg2215037#msg2215037

Offline clongton

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Re: Sierra Space LEO Space station
« Reply #140 on: 12/11/2024 05:52 pm »
Interesting that both Bigelow and now Sierra both lay out their floors longitudinally rather than radially.

It's always been that way.

https://forum.nasaspaceflight.com/index.php?topic=53484.msg2215037#msg2215037

NASA's original layout for TransHab was radial.
https://en.wikipedia.org/wiki/TransHab
Then Bigelow purchased the rights from NASA to develop it. But the longitudinal layout was adopted early on when habitat planners couldn't make the radial layout work in an inflatable that size. It was just too restrictive.
« Last Edit: 12/11/2024 05:58 pm by clongton »
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Offline Lee Jay

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Re: Sierra Space LEO Space station
« Reply #141 on: 12/11/2024 06:09 pm »
Interesting that both Bigelow and now Sierra both lay out their floors longitudinally rather than radially.

It's always been that way.

https://forum.nasaspaceflight.com/index.php?topic=53484.msg2215037#msg2215037

NASA's original layout for TransHab was radial.
https://en.wikipedia.org/wiki/TransHab
Then Bigelow purchased the rights from NASA to develop it. But the longitudinal layout was adopted early on when habitat planners couldn't make the radial layout work in an inflatable that size. It was just too restrictive.

I meant since the first version from Sierra.

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Re: Sierra Space LEO Space station
« Reply #142 on: 12/12/2024 01:43 pm »
Interesting that both Bigelow and now Sierra both lay out their floors longitudinally rather than radially.

It's always been that way.

https://forum.nasaspaceflight.com/index.php?topic=53484.msg2215037#msg2215037

NASA's original layout for TransHab was radial.
https://en.wikipedia.org/wiki/TransHab
Then Bigelow purchased the rights from NASA to develop it. But the longitudinal layout was adopted early on when habitat planners couldn't make the radial layout work in an inflatable that size. It was just too restrictive.

I meant since the first version from Sierra.
Nobody has claimed otherwise, Sierra/SNC have always made their layouts public since their inflatables programme was announced.
The question is why longitudinal rather than radial, not when.

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Re: Sierra Space LEO Space station
« Reply #143 on: 12/12/2024 08:13 pm »
Nobody has claimed otherwise, Sierra/SNC have always made their layouts public since their inflatables programme was announced.
The question is why longitudinal rather than radial, not when.

Returning to the original question, there are many reasons why a longitudinal interior layout is preferred over a radial one. To reduce the risk of veering off topic, I’ll offer just 2 of the many considerations, from a designer’s point of view, and some sources for you to check out if you wish to investigate further.

Structural Efficiency
Longitudinal modules are structurally simpler to design and manufacture, as cylindrical shapes lend themselves naturally to withstand internal pressure and launch stresses when oriented along the rocket's longitudinal axis. Radial layouts, as seen in Skylab or concepts like TransHab, introduce complexities in structural integration and load distribution, particularly during launch and deployment.

Interior Space Utilization
Longitudinal layouts allow for efficient partitioning of internal spaces. Work, living, and storage areas can be arranged in a linear fashion, optimizing the use of the pressurized volume. In radial layouts, the arrangement of usable space can be less intuitive, potentially leading to inefficiencies.

There are many others I could offer but won’t. This is a complex subject, and if you want to explore it further. I would offer, for your study/enjoyment these sources to check out:

NASA Technical Reports Server (NTRS): This database includes research on topics such as structural analysis, composite materials, and their applications in aerospace. Studies on finite element analysis (FEA) and composite testing provide insights into practical applications and theoretical modeling. For instance, reports discuss material properties like ply-drop modeling, core-to-facesheet interface stresses, and buckling analysis. This is an excellent resource for exploring detailed engineering analyses and methodologies. Visit NTRS for specific reports.

MIT OpenCourseWare: Offers free access to a wide range of engineering courses, including those on advanced mechanics of materials and structures. These resources are beneficial for building a foundational understanding and applying complex mathematical modeling to structural problems.

Engineering Journals and Databases: Platforms such as SpringerLink and ScienceDirect host peer-reviewed articles on topics like nonlinear transient buckling, core crushing in composites, and the effects of geometric imperfections in aerospace materials.

Textbooks and Educational Resources: Books such as "Mechanics of Composite Materials" by Robert M. Jones or "Introduction to Finite Element Analysis" by J.N. Reddy provide a robust foundation in structural and material analysis principles.

Professional Engineering Organizations: The American Society of Mechanical Engineers (ASME) or the American Institute of Aeronautics and Astronautics (AIAA) often publish relevant research articles and case studies.

If you’re looking for detailed engineering analyses or studies comparing these 2 different layouts, I recommend exploring NASA's technical archives and papers published by the American Institute of Aeronautics and Astronautics (AIAA). These sources often evaluate the trade-offs in structural integrity, crew ergonomics, and life-support system efficiency for different human habitat layouts.
« Last Edit: 12/12/2024 08:30 pm by clongton »
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Offline JSz

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Re: Sierra Space LEO Space station
« Reply #144 on: 04/22/2025 03:44 pm »
So that there is something to eat in orbit:

https://twitter.com/SierraSpaceCo/status/1914692240024252855

Quote
For over 20 years, we have been at the forefront of researching how to grow plants in space.

Our Astro Garden system is a large-scale vegetable production system that uses hydroponics to grow plants without soil and offers a sustainable means of producing fresh food fresh food for crew while also augmenting life support functions such as water purification, carbon dioxide removal and oxygen production.

We are committed to pushing the boundaries of technology to create solutions that benefit both long-duration space missions and our planet.

Link: https://sierraspace.com/space-technology/microgravity-environmental-systems/space-station-payloads/

Offline StraumliBlight

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Re: Sierra Space LEO Space station
« Reply #145 on: 04/24/2025 12:50 pm »
https://twitter.com/SierraSpaceCo/status/1915376376695161155

Sierra Space Advances Space Station Technology With Hypervelocity Impact Testing at NASA White Sands [Apr 24]

Quote
Sierra Space announced today that it recently conducted successful hypervelocity impact trials at NASA’s White Sands Test Facility in Las Cruces, New Mexico, to optimize the structural integrity of Sierra Space’s Large Integrated Flexible Environment (LIFE®) habitat. The goal of this NASA-supported testing was to refine a shield for the company’s expandable, flexible space station structure to make it capable of withstanding impacts from hazards on orbit.

The LIFE habitat’s shield, constructed from innovative, high-strength, flexible “softgoods” – a chemically-woven fabric material called Vectran® – provides a lightweight yet durable alternative to traditional rigid structures. The Sierra Space and NASA test teams used a two-stage light gas gun to simulate micrometeoroid and orbital debris (MMOD) impacts to LIFE’s outer shield. The testing aimed to select materials and configurations that enhance the habitat’s shielding performance while achieving significant mass savings – critical for space missions.

[...]

The impact testing, conducted under an unfunded Space Act Agreement called Collaborations for Commercial Space Capabilities (CCSC-2), used NASA’s .50 caliber two-stage light gas gun to replicate MMOD traveling at speeds around seven kilometers per second. Housed in the Remote Hypervelocity Test Laboratory, the gun uses gunpowder (the first stage) and highly compressed hydrogen (the second stage) to accelerate projectiles at high velocities to simulate orbital debris impacts on spacecraft and satellite materials and components. Testing is conducted in a near vacuum chamber to simulate space conditions.

Material Selection and Testing Process

The impact trials were conducted in two phases. The first grouping of shots varied the softgoods materials while keeping gun parameters constant, simulating MMOD impacts to directly compare how each material performed. After identifying the most promising materials, the team adjusted gun parameters to develop an equation characterizing the efficacy and performance of the selected shield stack. During the tests, 40 experimental shots were fired toward the materials to confirm the configuration selection. Once the team had established a strong but mass-efficient shield configuration, 19 additional shots were discharged at the material. These efforts were critical to mitigate future risks posed by MMOD—tiny, high-speed particles that can cause significant damage to spacecraft and habitats in orbit.

Sierra Space team members traveled to White Sands to observe the shots firsthand and collaborate on real-time adjustments to the follow-on tests based on immediate results. This hands-on approach allowed for rapid, data-driven decisions to refine the shield design.



Higher Res photos
« Last Edit: 04/24/2025 12:57 pm by StraumliBlight »

Offline Tywin

Re: Sierra Space LEO Space station
« Reply #146 on: 06/22/2025 01:14 pm »
Any updates when they go to launch the LIFE module prototype?
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Offline Tywin

Re: Sierra Space LEO Space station
« Reply #147 on: 01/01/2026 01:21 pm »
Any updates when they go to launch the LIFE module prototype?

Any info if LIFE will flight this year?
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Offline JSz

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Re: Sierra Space LEO Space station
« Reply #148 on: 01/01/2026 04:14 pm »
On the Sierra Space website (https://www.sierraspace.com/commercial-space-stations/life-space-habitat/), the latest news about the LIFE module dates back to 20 November 2024 (not 2025). There is not even a suggestion of a launch date for the LIFE 10 test module, which was undergoing testing at the time. There is no mention of the target LIFE 285. They write that LIFE is to be used to create a lunar habitat, but again without any details.

According to the original plans, LIFE was to be one of the modules of the Orbital Reef station, which was to be built by a consortium led by Blue Origin. Somehow, over a year ago, rumours emerged that Blue was withdrawing from this work, but Blue denied this. And that was the last information about Orbital Reef.

So I am very pessimistic about whether we will ever see LIFE in orbit.

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