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Low Pressure Drop Oxygen Flow Meter for the PLSS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC19C0125
Agency Tracking Number: 186512
Amount: $754,982.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: H4
Solicitation Number: SBIR_18_P2
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-08-12
Award End Date (Contract End Date): 2021-08-11
Small Business Information
5455 Spine Rd, Ste ME
Boulder, CO 80301-3312
United States
DUNS: 080138735
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Adam Escobar
 (720) 309-8475
Business Contact
 Dylan Graham
Phone: (228) 813-6103
Research Institution

The portable life support system (PLSS) of the advanced extravehicular mobility unit (AEMU) provides the necessary environment for a crew member to operate within the space suit.nbsp; Within the PLSS, the oxygen ventilation loop provides carbon dioxide washout, gas temperature control, humidity control, and trace contaminant removal.nbsp; Historically, there have been issues with the measurement of air flow for the oxygen ventilation loop.nbsp; With the Apollo EMU, there were humidity issues with the implemented flow meter.nbsp; For the Space Shuttle/ISS EMU, the flow sensor was a flapper/microswitch combination that only measured a discrete threshold for flow.nbsp; The proposed innovation allows for continuous air flow measurement from 1 to 8 acfm with static pressures of 3.5 to 25 psia in the pure oxygen environment.nbsp; This new method meets the low pressure drop requirement and allows operation beyond low earth orbit (LEO) with radiation hardened electronics.nbsp; An engineering demonstration unit (EDU) will be developed during Phase II.

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

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