Author Topic: SpaceX F9 : SDA Tranche 0 Flight 1 : Vandenberg SLC-4E : late March 2023  (Read 17170 times)

Offline Jansen

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Discussion thread for the US Space Development Agency’s first Transport & Tracking Layer mission.

More details on these satellites and the launch solicitation can be found in the discussion thread for SDA LEO constellations.

Some discussion on the SpaceX Tracking Layer satellite award can be found in SpaceX wins contract for missile-warning satellites

NSF Threads for SDA Tranche 0 Flight 1 : Discussion

March 2023 on Falcon 9 from SLC-4E VAFB to polar orbit.  First stage is xxxx-x, landing at LZ-4.

SpaceX wins $150 million contract to launch Space Development Agency satellites
Quote from: Sandra Erwin
SpaceX has been awarded a $150.4 million contract to launch as many as 28 satellites for the Pentagon’s space agency, the Defense Department announced Dec. 31.

The contract is to launch a mix of small and medium spacecraft of different sizes that the Space Development Agency is acquiring from multiple vendors. That includes 20 data-relay satellites known as the Transport Layer and the other eight are missile-warning satellites known as the Tracking Layer.
« Last Edit: 02/02/2023 08:05 pm by gongora »

Offline Jansen

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SPACE DEVELOPMENT AGENCY

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 Jansen

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RFP details attached

Quote
The first launch is required in September 2022. If additional launches are required, all launches shall be completed as close to September 2022 as possible, but not later than 31 March 2023.
The LSC shall also provide Evolved Expendable Launch Vehicle Secondary Payload Adapter (ESPA) rings as well as the individual satellite deployment/separation systems and shall perform the SV-to-Launch Vehicle (LV) integration efforts.
Reference Attachment 4 – Tranche 0 Launch Services SV Planning Info for SV parameters. The LSC shall deploy the SDA satellites into orbits with the following characteristics:
• Apogee: 950km +/- 11.1km
• Perigee: 950km +/- 3.7km
• Inclination between 80 degrees (threshold) and 89.5 degrees (objective)+/- 0.05deg
Solicitation HQ085021R0001 Attachment 1 (Rev 1)
 3

• RAAN separation of 31 deg +/- 1deg
Plane 1 will include All Transport Vendor 1 SVs, two Tracking Vendor 1 SVs, and two Tracking Vendor 2 SVs.
Solicitation HQ085021R0001 Attachment 1 (Rev 1)
  Plane 2 will include All Transport Vendor 2 SVs, two Tracking Vendor 1 SVs, and two Tracking Vendor 2 SVs.
 There are no additional sequencing or position requirements for the SVs in each plane.
 The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.
The LSC shall perform launch vehicle planning, analysis, design, development, production, integration, and testing required to provide the launch service appropriate to transport the payload to the desired orbit. The
2.6 Compliance Documents
51 U.S.C. § 50131(a) requires the Federal Government to acquire space transportation services from U.S. commercial providers whenever such services are required in the course of its activities. To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services of U.S. commercial providers. The National Space Transportation Policy (NSTP) provides that U.S. Government payloads shall be launched on vehicles manufactured in the United States.
Consistent with these requirements, the SDA launch services are required to be provided by a U.S. commercial provider, using a launch vehicle manufactured in the United States. Proposers will be required to demonstrate that they have satisfied these requirements. The awarded contract will also require the LSC to continue to comply with 51 U.S.C. § 50131 and the NSTP.
The LSC shall comply with U.S. Government Orbital Debris Mitigation Standard Practices, requiring deorbit of the launch vehicle upper stage within 25 years or less.
3.0 Launch Vehicle Analysis and Design
The LSC shall provide the predicted launch vehicle environments to the SDA SV Prime Contractors. Potential mitigation approaches should be identified for any environments which exceed LV and SV design levels based on inputs from the SV providers and predicted SV configurations relative to ESPA rings inside the payload fairing.
4.0 Development and Production
The LSC shall be responsible for manufacture, assembly, test and transport of the launch vehicle and all mission hardware to the launch site; the LSC shall provide all materials and equipment necessary for these tasks.
The LSC shall hold third party liability insurance based on a Maximum Probable Loss value as calculated by the Federal Aviation Administration.
 LSC shall provide two Trajectory Analysis cycles and two Coupled Loads Analysis cycles. The analysis shall
 account for the complete stack, including Transport and Tracking SVs and all ESPA rings and other adaptors.
 The first cycle shall be delivered by TBD (estimated date 1 March 2021).
« Last Edit: 01/01/2021 12:26 am by Jansen »

Offline Jansen

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Quote
The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.

That’s an interesting rideshare opportunity.

Offline Vanspace

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Quote
The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.

That’s an interesting rideshare opportunity.

Or a nice way to deploy the polar orbiting StarLink sats for Canada and Northern Europe markets.
"p can not equal zero" is the only scientific Truth. I could be wrong (p<0.05)

Offline Jansen

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Quote
The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.

That’s an interesting rideshare opportunity.

Or a nice way to deploy the polar orbiting StarLink sats for Canada and Northern Europe markets.

It would be, except:

1) The mass of 14 SVs and the polar orbit likely means there will only be room for smallsats

2) There are only two launches for tranche 0

3) The first launch is September 2022, so a bit too far out considering SpaceX wanted to start the first polar shell in December 2020.

Offline Skyrocket

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Quote
The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.

That’s an interesting rideshare opportunity.

Or a nice way to deploy the polar orbiting StarLink sats for Canada and Northern Europe markets.

It would be, except:

1) The mass of 14 SVs and the polar orbit likely means there will only be room for smallsats

2) There are only two launches for tranche 0

3) The first launch is September 2022, so a bit too far out considering SpaceX wanted to start the first polar shell in December 2020.

Also the Tranche 0 launch contract specifies that ESPA dispensers to be used. AFAIK, these can not be combined with an Starlink stack.

Offline Vanspace

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Quote
The SDA T0 SVs will be the primary payload. The Government will not restrict the LSC from using any additional payload capacity for other purposes or clients, as long as the SDA schedule, orbital parameters, and security requirements are still met, contingent upon SDA approval.

That’s an interesting rideshare opportunity.

Or a nice way to deploy the polar orbiting StarLink sats for Canada and Northern Europe markets.

It would be, except:

1) The mass of 14 SVs and the polar orbit likely means there will only be room for smallsats

2) There are only two launches for tranche 0

3) The first launch is September 2022, so a bit too far out considering SpaceX wanted to start the first polar shell in December 2020.

Also the Tranche 0 launch contract specifies that ESPA dispensers to be used. AFAIK, these can not be combined with an Starlink stack.

Not to be contradictory but I thought the 4 SpaceX sats in Tranche 0 are Starlink bus derivatives. If they aren't Starlink derived, then 'SpaceX has a new Satellite Bus' would seem to me to be way more important news than a couple of essentially ride share launches. Of course Jensen shot down my original idea but I would be interested if this is a new bus
« Last Edit: 01/02/2021 01:31 am by Vanspace »
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Offline Jansen

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Not to be contradictory but I thought the 4 SpaceX sats in Tranche 0 are Starlink bus derivatives. If they aren't Starlink derived, then 'SpaceX has a new Satellite Bus' would seem to me to be way more important news than a couple of essentially ride share launches. Of course Jensen shot down my original idea but I would be interested if this is a new bus

Just because they are Starlink derived doesn’t mean that they are the same as Starlink satellites.

See attached for more info.

Offline gongora

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Previous discussion on these satellites and the launch procurement can be found in the SDA LEO Constellations thread.
https://forum.nasaspaceflight.com/index.php?topic=47145.0

The SpaceX tracking satellites stack on top of the ESPA ring.

Offline Vanspace

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Thanks guys!

This makes me think the permission to have other ride shares along with this mission was more about establishing the legal status/flexibility than any actual intent to do so. Seems there isn't any berths available in the stack for them to sell. I can see SpaceX wanting to establish launch services as legally equal to any other common carrier. I had not expected the military to take this baby step until ordered to by congress budget. Good news all around
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Offline Skyrocket

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Thanks guys!

This makes me think the permission to have other ride shares along with this mission was more about establishing the legal status/flexibility than any actual intent to do so. Seems there isn't any berths available in the stack for them to sell. I can see SpaceX wanting to establish launch services as legally equal to any other common carrier. I had not expected the military to take this baby step until ordered to by congress budget. Good news all around

Don't expect commercial ride share payloads. More likely any available ride share options on these launches will be used for the Space Test Program or other military programs.

Offline Vanspace

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The first baby step never goes far but is still worthy of celebration ;)
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Possible launch delay?

Quote
DoD’s Space Development Agency (SDA) in 2020 bought the first eight satellites of the Tracking Layer — four from L3Harris and four from a SpaceX-Leidos team. Both have passed design reviews and are scheduled to launch in 2023.

https://spacenews.com/dod-estimates-2-5-billion-price-tag-for-global-constellation-to-track-hypersonic-missiles/
[March 15]
« Last Edit: 03/30/2022 04:53 am by zubenelgenubi »

Offline Yiosie

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Possible launch delay?

Quote
DoD’s Space Development Agency (SDA) in 2020 bought the first eight satellites of the Tracking Layer — four from L3Harris and four from a SpaceX-Leidos team. Both have passed design reviews and are scheduled to launch in 2023.

https://spacenews.com/dod-estimates-2-5-billion-price-tag-for-global-constellation-to-track-hypersonic-missiles/

The September 2022 launch is for the 20 Transport Layer Tranche 0 satellites, not the eight Tracking Layer satellites mentioned in the article.

DoD space agency making contingency plans in case Congress doesn’t pass a budget [dated Dec. 6, 2021]

Quote
The first 20 satellites of the Transport Layer Tranche 0 are scheduled to launch in September.

Offline gongora

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Actually it's still set for 10 transport and 4 tracking on each of the first two flights.  (or at least they said 14 on each flight, I assume that's 10 and 4.  The two flights populate different planes.)
« Last Edit: 03/16/2022 06:12 pm by gongora »

Offline zubenelgenubi

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SFN Launch Schedule update, March 25 (one of many):
This launch is NET September 24, 2022, launching 14 satellites.
« Last Edit: 08/03/2022 06:55 pm by zubenelgenubi »
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https://spacenews.com/space-development-agency-to-accelerate-deployment-of-missile-tracking-satellites/

Quote
The Defense Department’s budget request for fiscal year 2023 includes $500 million for the Tracking Layer.

The first eight satellites – made by L3Harris and SpaceX – are projected to launch in 2023. The next batch of at least 28 satellites would launch in 2025.

Offline mkent

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https://spacenews.com/space-development-agency-to-accelerate-deployment-of-missile-tracking-satellites/

Quote
The Defense Department’s budget request for fiscal year 2023 includes $500 million for the Tracking Layer.

The first eight satellites – made by L3Harris and SpaceX – are projected to launch in 2023. The next batch of at least 28 satellites would launch in 2025.

That's the tracking layer, not the transport layer.

Offline gongora

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Tranche 0 has both transport and tracking layer, and there could still be some of each on both launches.

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