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Slush hydrogen propellant production, transfer, and expulsion studies at the NASA K-Site FacilitySlush hydrogen is currently being considered as a fuel for the National Aero-Space Plane (NASP) because it offers the potential for decreased vehicle size and weight. However, no large-scale data was available on the production, transfer, and tank pressure control characteristics required to use the fuel for the NASP. Therefore, experiments were conducted at the NASA Lewis Research Center K-Site Facility to improve the slush hydrogen database. Slush hydrogen was produced using the evaporative cooling, or freeze-thaw, technique in batches of about 800 gallons. This slush hydrogen was pressure transferred to a 5 ft diameter spherical test tank following production, and flow characteristics were measured during this transfer process. The slush hydrogen in the test tank was pressurized and expelled using a pressurized expulsion technique to obtain information on tank pressure control for the NASP. Results from the production, transfer, pressurization, and pressurized expulsion tests are described.
Document ID
19910069087
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hardy, Terry L.
(NASA Lewis Research Center Cleveland, OH, United States)
Whalen, Margaret V.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Subject Category
Propellants And Fuels
Report/Patent Number
AIAA PAPER 91-3550
Accession Number
91A53710
Distribution Limits
Public
Copyright
Other

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