Author Topic: NASA RFI for ISS deorbit module  (Read 13477 times)

Offline cohberg

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Re: NASA RFI for ISS deorbit module
« Reply #20 on: 08/23/2022 07:28 pm »
I guess if you want to go crazy you could also forego the extra vehicle entirely and slap a docking port and some Dragon avionics on a Falcon second stage. That thing will arrive in LEO with 15 tons of fuel to spare and plenty of time to dock thanks to GEO capability.
F9 stage has to survive upto year attached to ISS while meeting all stations safety requirements.

Cryogenic boiloff would take care of the safety issue in short order.

I think an proposed h3 launching a improved second stage is so uitable for deorbiting iss

Same problem with H3 2nd stage (cryogenic LH2 / LOX boiloff) + LE-5B-3 being 23x too powerful.



The only solution proposed upthread that is even close currently is the ESM. Even that would need to be significantly modified with dedicated autonomous avionics, IDA / CBM and the AJ10 removed.



DragonXL, if it ever gets built, would be another good candidate for this

It would need modifications for additional propelant and 4 additional rear facing Dracos but SpaceX already has:

In house CBM / NDS manufacturing capability / experience
Dragon 2 avionics / vehicle are flight proven in the context of freeflight / ISS prox ops / docking etc.
Propellant is non cryogenic

Heck even an end of life D2 or a museum D1 that have a draco array heatshield sub mod would do the job nicely.

Offline brickmack

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Re: NASA RFI for ISS deorbit module
« Reply #21 on: 08/24/2022 04:29 pm »
Airbus is already proposing an ESM-derived logistics vehicle. Mostly to support Gateway, but I've heard they're interested in potential LEO applications with the CLD program

Thrust and propellant capacity are in the right ballpark, it wouldn't have to be a custom vehicle, could serve as a demo mission ahead of operational cargo flights yet still is a high-heritage crew-rated design, and it could even carry a pretty hefty pressurized payload (which will be helpful since, with one docking port occupied for a year by this deorbit module, ISS logistics will be even more limited than usual). Only hangup is NASA would likely prefer an American provider

Online AnalogMan

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Re: NASA RFI for ISS deorbit module
« Reply #22 on: 12/06/2022 04:59 pm »
NASA has posted slides for tomorrow's Industry Day presentation for the US De-orbit Vehicle (USDV) RFI.

https://sam.gov/opp/4f892c7b0b9d4f0bbdd9328b9e70a2a5/view

(copy of presentation attached)

Online AnalogMan

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Re: NASA RFI for ISS deorbit module
« Reply #23 on: 09/13/2023 08:59 pm »
Notice of an intention for NASA to issue an RFP for ISS deorbit vehicle:

United States Deorbit Vehicle
Notice ID 80JSC023R0003
September 13, 2023

https://sam.gov/opp/bfe89df0307b4f1a84aaf6067502eb6a/view

NASA/Johnson Space Center plans to issue a Request for Proposal (RFP) for the United States Deorbit Vehicle. This Pre-solicitation notice serves as a reminder of the original Pre-solicitation notice provided on SAM.gov under “80JSC022ISSDeorbit” through Modification 11 posted on May 8, 2023 and the Pre-solicitation Conference held May 9, 2023.

[...]

The anticipated release date of the RFP is on or about September 18, 2023 with an anticipated offer due date of on or about November 17, 2023. Past Performance is requested by October 16, 2023.

Online AnalogMan

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Re: NASA RFI for ISS deorbit module
« Reply #24 on: 10/02/2023 09:55 pm »
From pre-proposal conference charts (meeting to be held October 3, 2023)

https://sam.gov/opp/684faee4ce224e138dde92ae50353700/view

Online AnalogMan

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Re: NASA RFI for ISS deorbit module
« Reply #25 on: 11/08/2023 06:46 pm »
RFP amendment posted today:

DATES to extend the Proposal Due Dates to the following dates:

• Volume III, Past Performance to December 7, 2023.
• Volumes I, II, IV and V to December 14, 20


https://sam.gov/opp/1710240168064640a67e69f0ba478e7e/view

Online FutureSpaceTourist

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Re: NASA RFI for ISS deorbit module
« Reply #26 on: 12/09/2023 04:36 am »
https://spacenews.com/nasa-revises-contract-strategy-for-iss-deorbit-vehicle/

Quote
NASA revises contract strategy for ISS deorbit vehicle
Jeff Foust
December 7, 2023

WASHINGTON — NASA will give companies greater choice in the type of contract to use for producing a deorbit vehicle for the International Space Station.

In a procurement notice posted Dec. 5, NASA announced it would allow companies the choice of using either firm fixed price or cost plus incentive fee contract structures for both the design and the production of the U.S. Deorbit Vehicle (USDV).

https://sam.gov/opp/ef2b9c84c9c44b4e8f0db9cd8059fd08/view


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