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Accession Number N20130010177
Title Performance Gains of Propellant Management Devices for Liquid Hydrogen Depots.
Publication Date Feb 2013
Media Count 24p
Personal Author D. J. Chato J. B. McQuillen J. W. Hartwig
Abstract This paper presents background, experimental design, and preliminary experimental results for the liquid hydrogen bubble point tests conducted at the Cryogenic Components Cell 7 facility at the NASA Glenn Research Center in Cleveland, Ohio. The purpose of the test series was to investigate the parameters that affect liquid acquisition device (LAD) performance in a liquid hydrogen (LH2) propellant tank, to mitigate risk in the final design of the LAD for the Cryogenic Propellant Storage and Transfer Technology Demonstration Mission, and to provide insight into optimal LAD operation for future LH2 depots. Preliminary test results show an increase in performance and screen retention over the low reference LH2 bubble point value for a 325 2300 screen in three separate ways, thus improving fundamental LH2 LAD performance. By using a finer mesh screen, operating at a colder liquid temperature, and pressurizing with a noncondensible pressurant gas, a significant increase in margin is achieved in bubble point pressure for LH2 screen channel LADs.
Keywords Bubbles
Cryogenics
Experiment design
Liquid hydrogen
Mesh
Noncondensable gases
Propellant storage
Propellant tanks
Risk

 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 97K - Fuels
81C - Fuel & Propellant Tanks
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1320
Contract Number N/A

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