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Adaptive Venturi for Surge Pressure Mitigation

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC21C0468
Agency Tracking Number: 205308
Amount: $749,967.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: H10
Solicitation Number: SBIR_20_P2
Solicitation Year: 2020
Award Year: 2021
Award Start Date (Proposal Award Date): 2021-08-10
Award End Date (Contract End Date): 2023-08-09
Small Business Information
20 New England Business Center
Andover, MA 01810-1077
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jeffrey Wegener
 (978) 738-8164
Business Contact
 Michael Healy
Title: mhealy
Phone: (978) 738-8107
Research Institution

Physical Sciences Inc. (PSI) proposes to complete development of a unique venturi for propellant feed systems that uses a passively controlled throat area to rapidly and automatically adjust flow rate. The Adaptive Venturi is a safety device that eliminates fluid hammer in gaseous, liquid, and cryogenic systems by adjusting flow rate to prevent pressure surges. These benefits are achieved without adding weight or volume. No sensors or electronics are used and no power is required. For high-pressure oxygen systems, the Adaptive Venturi eliminates the risk of ignition caused by adiabatic compression. This device has been demonstrated with a prompt response time and zero evidence of instability.nbsp;In Phase I, PSIrsquo;s existing Adaptive Venturi was optimized specifically for high-pressure oxygen applications. The componentrsquo;s performance was evaluated using gaseous nitrogen to quickly iterate and improve the geometric design. This effort resulted in an optimized design that reduces gas pressurization rates by more than 85% in comparison to a conventional orifice or venturi.nbsp;In Phase II, the Adaptive Venturirsquo;s ability to prevent ignition due to fluid impact will be demonstrated in the most extreme application, gaseous oxygen at pressures greater than 8,000 psi. This program will result in a final product at the conclusion of the Phase II program, offering a low risk, near-term transition to NASA and commercial propulsion facilities.nbsp;

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

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