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Toxicity Mitigating Single-Fluid Cooling System for Manned Spacecraft

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC20C0204
Agency Tracking Number: 194419
Amount: $749,883.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: Z2
Solicitation Number: SBIR_19_P2
Solicitation Year: 2019
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-07-07
Award End Date (Contract End Date): 2022-07-06
Small Business Information
200 Yellow Place
Rockledge, FL 32955-5327
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 David Sykes
 (321) 631-3550
Business Contact
 Kate Wensil
Phone: (321) 631-3550
Research Institution

Mainstream proposes a single-loop vapor compression thermal control system (VCTCS) to replace currently-used two-loop TCSs.nbsp; NASA uses two-loop TCSs to mitigate crew toxicity risk whereby one loop collects heat within a crew module with a low-toxicity fluid and transfers the heat to a second loop in the external module that rejects heat through the radiators.nbsp; This architecture is used for crew safety (most very low freezing point fluids are somewhat toxic or untested) but comes with a mass penalty due to the duplication of prime movers (pumps), mass of the intermediate heat exchanger, and extra radiator surface area to account for the additional temperature delta required for the intermediate heat exchange process.The two-loop mass penalty is a driving force toward reducing the TCS to a single working fluid. However, the toxicity risk must be mitigated for this architecture to be realized. Mainstream proposes to replace the two loop TCS architecture with a single loop TCS architecture that has toxicity mitigating technology. In Phase I, Mainstream demonstrated the performance of the lightweight and compact compressor, by far the most critical component in the single-loop system.nbsp; In Phase II, Mainstream will refine the compressor design, and then will build and test a full-scale 8-kW capacity single-loop thermal system prototype.

* Information listed above is at the time of submission. *

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