Author Topic: SDA LEO Constellations  (Read 44229 times)

Offline gosnold

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Re: SDA LEO Constellations
« Reply #20 on: 10/10/2020 05:56 pm »
The launch RFP was published today.  Bids due early next month.  Looks like it would probably be around two RTLS flights on a Falcon 9?  Not an NSSL contract, so that opens up the bidding possibilities.

I am very surprised the tracking sats have such large differences in mass, one of the manufacturers has a solution three times lighter than the other.

Online gongora

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Re: SDA LEO Constellations
« Reply #21 on: 10/10/2020 07:04 pm »
The launch RFP was published today.  Bids due early next month.  Looks like it would probably be around two RTLS flights on a Falcon 9?  Not an NSSL contract, so that opens up the bidding possibilities.

I am very surprised the tracking sats have such large differences in mass, one of the manufacturers has a solution three times lighter than the other.

I'm waiting for the first round of questions/edits on the documentation.  It says all of those sats are ESPA class, and I'm hoping the dimensions for the bigger sat in attachment 4 are actually given in mm instead of cm.
https://beta.sam.gov/opp/95a8c11c0a9440e2a1ac8d7e3a9317c5/view

Offline su27k

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Re: SDA LEO Constellations
« Reply #22 on: 10/11/2020 02:42 am »
The launch RFP was published today.  Bids due early next month.  Looks like it would probably be around two RTLS flights on a Falcon 9?  Not an NSSL contract, so that opens up the bidding possibilities.

I am very surprised the tracking sats have such large differences in mass, one of the manufacturers has a solution three times lighter than the other.

I'm waiting for the first round of questions/edits on the documentation.  It says all of those sats are ESPA class, and I'm hoping the dimensions for the bigger sat in attachment 4 are actually given in mm instead of cm.
https://beta.sam.gov/opp/95a8c11c0a9440e2a1ac8d7e3a9317c5/view

Great find.

I wonder if the mistake in attachment 4 is that they accidentally filled in deployed dimension instead of stowed dimension? 11 meters seems about right for fully extended size of the Starlink solar array.

Also Tracking Vendor 2 is using LMP‐103S (Green) propellant, I assume this means they're L3Harris, and this makes Tracking Vendor 1 (with 1 metric ton satellite and 11 meters z dimension) SpaceX.

Anyway it's a relief to see SDA is open to big differences in satellite size and mass, this is what is needed if they want cheap commercial solutions.
« Last Edit: 10/11/2020 02:43 am by su27k »

Online gongora

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Re: SDA LEO Constellations
« Reply #23 on: 10/14/2020 10:27 pm »
[Space News] Telesat wins DARPA contract to manufacture satellite buses for Blackjack program

Interesting.  Telesat gets $18.3M to produce two satellites for DARPA using a derivative of the OneWeb bus supplied by Airbus.  Each of the satellites will have two optical inter-satellite links that are supplied by two different vendors.  Options for up to 18 more satellites.

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Re: SDA LEO Constellations
« Reply #24 on: 10/17/2020 04:27 am »
The launch RFP was published today.  Bids due early next month.  Looks like it would probably be around two RTLS flights on a Falcon 9?  Not an NSSL contract, so that opens up the bidding possibilities.

I am very surprised the tracking sats have such large differences in mass, one of the manufacturers has a solution three times lighter than the other.

I'm waiting for the first round of questions/edits on the documentation.  It says all of those sats are ESPA class, and I'm hoping the dimensions for the bigger sat in attachment 4 are actually given in mm instead of cm.
https://beta.sam.gov/opp/95a8c11c0a9440e2a1ac8d7e3a9317c5/view

Well, the first round of updates has been posted.  It's still a bit vague what this payload stack would look like.  The dimensions for the big Tracking Layer satellites were changed from 4.3 x 3.0 x 11.0m to 4.3 x 3.0 x 1.0m.  Several of the questions were about these satellites, and the answers were vague.  Those are not close to fitting on an ESPA port.  Someone posed a question about whether they would actually stack on top of the ESPA ring, which wasn't really answered but is the only way it could probably work if those are the real dimensions.

Offline Asteroza

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Re: SDA LEO Constellations
« Reply #25 on: 10/19/2020 12:54 am »
[Space News] Telesat wins DARPA contract to manufacture satellite buses for Blackjack program

Interesting.  Telesat gets $18.3M to produce two satellites for DARPA using a derivative of the OneWeb bus supplied by Airbus.  Each of the satellites will have two optical inter-satellite links that are supplied by two different vendors.  Options for up to 18 more satellites.

I wonder if the previous OneWeb derived remote sensing constellation attempt, and the people involved, got subsumed into Telesat?

Offline LiamS

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Re: SDA LEO Constellations
« Reply #26 on: 10/20/2020 02:54 pm »
In the 'Discussion on Spacex' video that was released alongside the news that Starlink would be interfacing with Microsoft Azure platform, it turns out that Microsoft is a subcontractor for SpaceX for the SDA contract about the ballistic missile warning system. Gwynne Shotwell says Microsoft is doing 'A lot of work'. Thought it was interesting


Discussion on Spacex video - at roughly the 5-minute mark
« Last Edit: 10/20/2020 02:54 pm by LiamS »

Online gongora

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Re: SDA LEO Constellations
« Reply #27 on: 10/21/2020 04:18 pm »
Mynaric inks deal with Telesat to supply terminals for DARPA’s Blackjack satellite program and establishes industry’s first laser communication interoperability lab

- Mynaric to supply CONDOR terminals for two Blackjack satellites scheduled for launch 2021
- Laser communication interoperability lab to be established at Mynaric’s Los Angeles facility
- Deal marks Mynaric’s continued success in serving  the U.S. government market

Munich, October 21, 2020 – Mynaric has been selected by Telesat to supply multiple units of its flagship CONDOR optical inter-satellite link terminals to DARPA’s Blackjack Track B program, in a deal demonstrating continued success for Mynaric in accessing the U.S. government market.

The terminals are scheduled to be delivered in mid-2021 to DARPA’s Blackjack System Integrator with satellites scheduled to launch in the latter part of 2021. The launch will be the inaugural ride to space for Mynaric’s flagship CONDOR terminals – a key milestone and final trial for the product’s successful market introduction. Telesat aims to utilize the mission to demonstrate the capabilities, as well as the interoperability, of laser communication products from different vendors as part of the DARPA Blackjack program.

As part of the deal, Mynaric will also establish the industry’s first laser communication interoperability lab at its Los Angeles premises. The lab will be equipped with a link testbed capable of emulating conditions in space and testing inter-vendor operability – a key requirement of DARPA for its proliferated LEO constellation plans. The soon-to-be-established interoperability lab will provide laser communication vendors selected as part of the Blackjack program with the opportunity to verify their compatibility with Mynaric’s terminals and between each other. It is intended to serve as a hub and enabler for testing interoperability and to help establish a common laser communication standard within the Blackjack program and potentially beyond.

“We are very happy to welcome Telesat and DARPA as inaugural launch customers for our CONDOR terminals and we are very much looking forward to supporting the mission’s target to demonstrate interoperability between different vendors. Interoperability allows not just DARPA but all of our customers to de-risk their supply chains and we expect it to work as a catalyst accelerating the large-volume deployment of laser communication systems. Consequently, Mynaric aims to take a leading role in establishing open industry standards for laser communications and it is an honor to host the industry’s first interoperability lab at our facilities in Los Angeles.”

– Bulent Altan, CEO, Mynaric

“Optical Inter-Satellite Links are the essential building block for next generation commercial and government space networks. Mynaric has developed impressive laser communications terminals that we will be demonstrating on-orbit under the DARPA Blackjack program. We expect that Mynaric, as a part of Telesat’s Blackjack team, will show the way to affordable ultra-high bandwidth laser communications capability for future resilient government space networks.”

– Don Brown, General Manager, Telesat U.S. Services

Blackjack is a joint technology demonstration project by DARPA and the U.S. Space Force to evaluate utility and concepts of operation for a large-scale proliferated low Earth orbit satellite constellation. The overarching goal of the program is to leverage developments from the commercial sector to create a generic satellite bus and payloads for defense purposes. Mynaric’s CONDOR terminal, specifically developed for mass deployment and under stringent low size, weight, power and cost requirements (SWaP-C), is a natural fit for the program.

Offline Nomadd

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Re: SDA LEO Constellations
« Reply #28 on: 10/21/2020 05:33 pm »
 I've never considered Starlink's laser links working outside the network until I read that last post. It gives a faint hint of what could be possible with interoperability among various systems. A lot of agencies must be thinking of what they could do with the leo networks if they had links that weren't just pointed down or sideways.
 Bringing internet to the villages and supplying secure p-p ground links is a good goal, but it barely scratches the surface of what this these things could grow into.
 
« Last Edit: 10/21/2020 05:37 pm by Nomadd »
Those who danced were thought to be quite insane by those who couldn't hear the music.

Online gongora

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Re: SDA LEO Constellations
« Reply #29 on: 10/21/2020 05:52 pm »
Laser ISL interoperability is one of the big goals listed in the requirements for Tranche 0.  They're mandating and testing the interoperability, and using terminals from multiple manufacturers.
« Last Edit: 10/21/2020 05:54 pm by gongora »

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Re: SDA LEO Constellations
« Reply #30 on: 10/26/2020 03:19 pm »
They released another round of updates on the Tranche 0 Launch RFP.  The updates include diagrams with the sizes and stacking methods for the various payloads.  The SpaceX sats really are that big, 4.3 x 3 x 1m, 1 ton each, and they stack flat on top of the ESPA ring like giant Starlinks.  (I'm trying to figure out if I should interpret that as having a body of 3.6 x 2.4 x 1m with bits sticking off the sides.)  It looks like the launches will require 5 meter payload fairings just to fit those SpaceX sats.  While only boxes for the payload sizes are shown for three of the satelllite designs, there is a more detailed drawing of the L3Harris tracking sats.

« Last Edit: 10/26/2020 03:19 pm by gongora »

Offline bodhiandphysics

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Re: SDA LEO Constellations
« Reply #31 on: 10/26/2020 07:24 pm »
They released another round of updates on the Tranche 0 Launch RFP.  The updates include diagrams with the sizes and stacking methods for the various payloads.  The SpaceX sats really are that big, 4.3 x 3 x 1m, 1 ton each, and they stack flat on top of the ESPA ring like giant Starlinks.  (I'm trying to figure out if I should interpret that as having a body of 3.6 x 2.4 x 1m with bits sticking off the sides.)  It looks like the launches will require 5 meter payload fairings just to fit those SpaceX sats.  While only boxes for the payload sizes are shown for three of the satelllite designs, there is a more detailed drawing of the L3Harris tracking sats.

We got a FEEP! (Field Emission Electric Propulsiond, a really cool type of Ion propulsion using liquid metals).  Transport 1 is York Space System since the specs are similar to their Harbinger 1 sat, including the use of Indium a propellant.  That means Transport 2 is Lockheed.

It looks to me that the "super-starlink" bus that Spacex is proposing is a prototype for a gen-2 starlink launched by Starship.  Given Starship's payload capacity and necessary launch cadence, it makes sense not only to increase the numbers of starlinks, but also increase their mass. 

Online gongora

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Re: SDA LEO Constellations
« Reply #32 on: 11/06/2020 09:05 pm »
[Space News] Airbus, Raytheon protest Space Development Agency satellite contract awards
Quote
Airbus and Raytheon have filed protests with the Government Accountability Office challenging Space Development Agency contracts awarded to L3Harris and SpaceX. ... Airbus U.S. Space and Defense filed its protest Oct. 28. Raytheon’s protest was filed Nov. 3. The Government Accountability Office has until February 11, 2021 to issue a decision.

Offline su27k

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Re: SDA LEO Constellations
« Reply #33 on: 12/11/2020 02:20 am »
Space Development Agency’s missile-tracking satellites on hold as Raytheon files new protest

Quote
Both Airbus and Raytheon on Oct. 28 and Nov. 3, respectively, filed protests with the Government Accountability Office challenging the Space Development Agency’s Oct. 5 contract awards to L3Harris and SpaceX. In order to resolve the protests, the Space Development Agency offered to to re-evaluate contractor bids.

After the agency agreed to this corrective action, the Government Accountability Office dismissed both Airbus’ and Raytheon’s protests Nov. 30. But the Space Development Agency has not been able to start the re-evaluation of proposals because Raytheon filed another protest on Nov. 30 challenging the agency’s corrective action. A spokesperson said the SDA could not comment on the nature of the protest.

Online gongora

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Re: SDA LEO Constellations
« Reply #34 on: 12/31/2020 10:19 pm »
Space Exploration Technologies Inc. (SpaceX), Hawthorne, California, has been awarded a $150,450,000 firm-fixed-price contract for launch services from Vandenberg Air Force Base for the Space Development Agency's Tranche 0 Transport and Tracking Layer space vehicles. This award was made based on the Tranche 0 Launch request for proposal (HQ085021R0001) released Oct. 6, 2020, to which responses were due Nov. 9, 2020. SpaceX will provide standalone launch services via two launches, with the first launch occurring in September 2022, and the entire constellation on orbit no later than March 31, 2023. Work will be performed in Hawthorne, California; Vandenberg AFB, California; and McGregor, Texas. Fiscal 2020 and 2021 defense-wide research, development, test and evaluation funds will be obligated at the time of award. The Space Development Agency, Washington, D.C., is the contracting activity (HQ085021C0005).

Offline Targeteer

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Re: SDA LEO Constellations
« Reply #35 on: 01/07/2021 09:22 am »
Lockheed Martin Space, Sunnyvale, California, has been awarded a not-to-exceed $4,934,360,150 undefinitized modification (P00034) to contract FA8810-18-C-0005 which consists of all work associated with the manufacturing, assembly, integration, test, and delivery of three Next Generation Geosynchronous (NGG) Earth orbiting space vehicles (SV), and delivery of ground mission unique software and ground sensor processing software.  Additionally, this modification includes engineering support for launch vehicle integration and launch and early on-orbit checkout for all three NGG SVs.  Work will be performed in Sunnyvale, California, and is expected to be completed May 31, 2028.  Fiscal 2021 research, development, test and evaluation funds in the amount of $99,000,000 are being obligated at the time of award.  Space and Missile Systems Center, Los Angeles Air Force Base, California, is the contracting activity (FA8810-18-C-0005).
OPIR GEO

I was curious about another set of GEO OPIR birds and this breaks down how truly non-integrated the programs are.  No surprise at all.
https://breakingdefense.com/2021/01/smc-sda-missile-warning-sat-ground-systems-wont-talk/
« Last Edit: 01/07/2021 02:54 pm by gongora »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online gongora

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Re: SDA LEO Constellations
« Reply #36 on: 01/07/2021 06:49 pm »
[Space News] SpaceX and L3Harris win – again- Space Development Agency contracts to build missile-warning satellites
Quote
SDA statement: “The reevaluation confirmed the original selection decision that the SpaceX and L3Harris Technologies' proposals offered the best value to the government.”

Offline su27k

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Re: SDA LEO Constellations
« Reply #37 on: 01/29/2021 03:03 am »
https://twitter.com/CHenry_QA/status/1354494406850736133

Quote
Derek Tournear, Space Dev. Agency, on today's Defense One webinar, says SDA expects most of its constellation of hundreds of sats will be ~250kg, but that cost is more important than size. SpaceX's SDA sats are ~1,000kg, based on expanded Starlink design. L3Harris is ~250kg.

Online gongora

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Re: SDA LEO Constellations
« Reply #38 on: 01/29/2021 01:12 pm »
https://twitter.com/CHenry_QA/status/1354494406850736133

Quote
Derek Tournear, Space Dev. Agency, on today's Defense One webinar, says SDA expects most of its constellation of hundreds of sats will be ~250kg, but that cost is more important than size. SpaceX's SDA sats are ~1,000kg, based on expanded Starlink design. L3Harris is ~250kg.

Webinar is at
« Last Edit: 01/29/2021 01:13 pm by gongora »

Offline DigitalMan

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Re: SDA LEO Constellations
« Reply #39 on: 01/30/2021 05:04 am »
Other things I found interesting in that video:
1. Using something other than GPS for location. It seems like related to using known locations of other satellites.
2. In space manufacturing demonstrations. One coming up in a few years, another a few years after that.
3. Looking for AI to analyze every image. Analyze, improve, iterate. Data fusion. I took this as not exclusively AI.
4. Iterate to being able to use machine learning and more in orbit.
5. I'll just call this hybrid clouds above the clouds.
6. Open architecture

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