NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Low Leakage Valves for Long Duration MissionsThis paper presents a status update on the low leakage cryogenic test valves currently under development at NASA’s Marshall Space Flight Center. These valves consist of a 3-inch isolation valve, a 3-inch relief valve, and an 8-inch pre-valve. Each of these valves contain a self-aligning seat and poppet design to significantly reduce the quantity of propellant flowing past the seat when the valve is in its closed state (internal leakage). This self-aligning design utilizes a metallic poppet head with five degrees of freedom and is intended to allow a valve to be more tolerant of the imperfect contacts and misalignments that are commonly found between sealing surfaces. This paper covers the test articles, facilities, objectives, and preliminary results.
Document ID
20220018966
Acquisition Source
Marshall Space Flight Center
Document Type
Video
Authors
Robert Walker
(Jacobs (United States) Dallas, Texas, United States)
Date Acquired
December 14, 2022
Publication Date
January 27, 2023
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: AIAA Science and Technology (SciTech) Forum and Exposition 2023
Location: National Harbor, MD
Country: US
Start Date: January 23, 2023
End Date: January 27, 2023
Sponsors: National Aeronautics and Space Administration
Funding Number(s)
CONTRACT_GRANT: CRYO.CFM.01
CONTRACT_GRANT: 80MSFC18C0011
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Patent
17/566,068
Patent Application
Technical Review
Professional Review
Keywords
Cryogenic Fluid Management
Low Leakage Valves
No Preview Available