Author Topic: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)  (Read 1009999 times)

Offline Rocket Science

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1700 on: 03/14/2016 07:46 am »
Let's hope it's a trick of perspective because if not, and this graphic is correct, then Cargo Dream Chaser has no right main landing gear, just a door.

And we know that doesn't work well because they've flight tested that configuration...😉
Aw, she can take it... ;D

Remember: A Good landing is one you can walk away from. A GREAT landing is one where you can use the vehicle again right away.
Yes, but I've never to yet seen a spacecraft "ever" being re-flown "right away" either... ;)
"The laws of physics are unforgiving"
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Offline yg1968

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« Last Edit: 03/24/2016 11:01 pm by yg1968 »

Offline Alpha Control

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1702 on: 03/25/2016 12:10 am »
SNC Space store:

http://www.snclogoshop.com/ecommerce/

Thanks YG! Some nice items. But what I really want is the Dream Chaser model the lady wearing the polo is holding!
Space launches attended:
Antares/Cygnus ORB-D1 Wallops Island, VA Sept 2013 | STS-123 KSC, FL March 2008 | SpaceShipOne Mojave, CA June 2004

Offline JAFO

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1703 on: 03/25/2016 12:15 am »
Sorry if this has been answered, but why did SNC go with folding wings for  the cargo version? Was there a problem with the aerodynamics of an unfaired vehicle?


TIA
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Offline ethan829

Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1704 on: 03/25/2016 12:47 am »
Sorry if this has been answered, but why did SNC go with folding wings for  the cargo version? Was there a problem with the aerodynamics of an unfaired vehicle?


Flying inside a standard 5-meter fairing makes integration with the launch vehicle much simpler. I also don't know how they would have accommodated the unpressurized cargo module without a fairing.

Offline brickmack

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1705 on: 04/04/2016 04:01 pm »
I also don't know how they would have accommodated the unpressurized cargo module without a fairing.

Probably would have looked rather like Hermes (http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2009/12/ariane_5_in_hermes_configuration_1991/9657602-3-eng-GB/Ariane_5_in_Hermes_configuration_1991.jpg ). Put any unpressurized cargo lower down towards the base of the pressurized expendable compartment, covered up by sort of an interstage-like structure

Offline Citabria

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1706 on: 04/06/2016 02:56 pm »
Also, this SNC image of the cargo version suddenly features a nose wheel... artist's mistake or something we don't know about?

http://mediakit.sncorp.com/mediastore/image/UDC_Cargo%20Unload_Runway_0222_5.jpg

I think its a trick of perspective there, we're seeing the far rear wheel and the forward skid looks a bit like a door for it hanging open, but theres no third wheel in the front.

If the gear doesn't come down, then DC could just yaw right and ditch! ;)

Offline Alpha Control

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1707 on: 04/07/2016 07:31 pm »
Article from the Alabama dot com site, from 3/31:
"Dream Chaser spaceship seems on a glide path to landing in Alabama".

The Huntsville Chamber of Commerce "...held a workshop in Huntsville on the space marketplace of tomorrow that drew 70 people from business, government and academia."

http://www.al.com/news/huntsville/index.ssf/2016/03/will_huntsville_be_a_spaceport.html

SNC notes that caught my eye:

"Right now, Huntsville is the only community we're moving forward with a (landing) license on."

"the company 'is trying to develop a commercial base' for Dream Chaser beyond supplying the space station."

Space launches attended:
Antares/Cygnus ORB-D1 Wallops Island, VA Sept 2013 | STS-123 KSC, FL March 2008 | SpaceShipOne Mojave, CA June 2004

Offline okan170

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1708 on: 04/16/2016 06:55 pm »
SNC Space store:

http://www.snclogoshop.com/ecommerce/

DC cargo mug came today.  Printing could be better, but it's kind of worth it to have a mug with a cargo spaceplane on it!

Later Edit:
The DC mug may not be suitable for long term tea or beverage use, the interior printing has started to loosen after a few thermal cycles and I've now repurposed it for a desk top pen holder.  (Block 2 of the mug should address this, and add a bit of orange that only shows up when you pour hot water into the cup ;) )
« Last Edit: 05/29/2016 07:16 pm by okan170 »

Offline yg1968

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1709 on: 06/06/2016 02:04 pm »
Commercial missions planned for 2020-2021 will carry experiments arranged by NanoRacks

See more at: http://www.parabolicarc.com/2016/06/03/nsrc-day-2-summary/#more-58577

Hmm, commercial missions. Will SNC succeed with commercial DC missions when SpaceX has failed with its DragonLab?

Offline rayleighscatter

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1710 on: 06/06/2016 09:57 pm »
Commercial missions planned for 2020-2021 will carry experiments arranged by NanoRacks

See more at: http://www.parabolicarc.com/2016/06/03/nsrc-day-2-summary/#more-58577

Hmm, commercial missions. Will SNC succeed with commercial DC missions when SpaceX has failed with its DragonLab?

I wonder if those lower re-entry G's are more of a selling point than people gave it credit for.

I also wonder if there's any way to clarify whether those commercials missions will be independent missions or will they be hitchhiking on a CRS flight?
« Last Edit: 06/06/2016 09:58 pm by rayleighscatter »

Offline yg1968

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1711 on: 06/07/2016 12:20 am »
Doug Messier says that he thinks so (he is pretty sure):

https://twitter.com/spacecom/status/739973583837921280

« Last Edit: 06/07/2016 01:34 am by yg1968 »

Online Robotbeat

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1712 on: 06/07/2016 12:40 am »
I'm not convinced.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services capabilities of United States commercial providers. US law http://goo.gl/YZYNt0

Offline Patchouli

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1713 on: 06/17/2016 11:13 pm »
Commercial missions planned for 2020-2021 will carry experiments arranged by NanoRacks

See more at: http://www.parabolicarc.com/2016/06/03/nsrc-day-2-summary/#more-58577

Hmm, commercial missions. Will SNC succeed with commercial DC missions when SpaceX has failed with its DragonLab?

I wonder if those lower re-entry G's are more of a selling point than people gave it credit for.

I also wonder if there's any way to clarify whether those commercials missions will be independent missions or will they be hitchhiking on a CRS flight?
It also allows quicker access to the experiments then DragonLab after landing.
There is no waiting several hours to recover your experiments all the time they're being exposed to Earth conditions and possibly salt water.
I wonder if the latter is what has been holding DragonLab back as potential researchers are waiting for powered landings to be an option.
« Last Edit: 06/17/2016 11:15 pm by Patchouli »

Offline Rocket Science

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1714 on: 07/29/2016 04:53 pm »
I was looking at the photos of DC in the update thread and I noticed that she is fitted with pitot tubes and other air data inlets leading me to think that the "may" fly her without the pitch/yaw air data flight test boom on her nose...
« Last Edit: 07/29/2016 05:07 pm by Rocket Science »
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Offline Ben the Space Brit

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1715 on: 08/05/2016 09:37 am »
Random thought:
The DC looks like the space plane from 'A Spaceman in King Arthur's Court'. This might not be coincidental because I believe the model and full-scale prop were based on the same NASA lifting body that is the ancestor of the DC (The HL-20, IIRC).
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Offline rpapo

Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1716 on: 08/05/2016 10:35 am »
From the update thread:
Will the dream chaser missions be piloted or non-piloted flights?
Non crewed for Cargo. But having the Cargo version flying will retire a lot of risk for a crewed version.
In nearly the same way as has happened with Dragon.  They get practice with how to build and operate the thing.
Following the space program since before Apollo 8.

Offline manboy

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1717 on: 08/06/2016 06:09 pm »
Is SNC building the cargo module or is it some outside contractor?
"Cheese has been sent into space before. But the same cheese has never been sent into space twice." - StephenB

Offline yg1968

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1718 on: 08/29/2016 09:20 pm »
Is SNC building the cargo module or is it some outside contractor?

Likely both. Like Orbital/ATK, SNC subcontracts a lot. But it seems to me that the cargo module has some similarity with the rest of their operations.

Online BrightLight

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Re: Sierra Space Dream Chaser DISCUSSION Thread (was SNC)
« Reply #1719 on: 09/13/2016 05:53 pm »
A video from MSNBC aired on August 30 - has some interesting views of the DC crew mockup

http://video.cnbc.com/gallery/?video=3000547012
« Last Edit: 09/13/2016 05:55 pm by BrightLight »

 

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