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NESC Review of the 8-Foot High Temperature Tunnel (HTT) Oxygen Storage Pressure Vessel Inspection RequirementsThe 8-Foot HTT (refer to Figure 4.0-1) is used to conduct tests of air-breathing hypersonic propulsion systems at Mach numbers 4, 5, and 7. Methane, Air, and LOX are mixed and burned in a combustor to produce test gas stream containing 21 percent by volume oxygen. The NESC was requested by the NASA LaRC Executive Safety Council to review the rationale for a proposed change to the recertification requirements, specifically the internal inspection requirements, of the 8-Foot HTT LOX Run Tank and LOX Storage Tank. The Run Tank is an 8,000 gallon cryogenic tank used to provide LOX to the tunnel during operations, and is pressured during the tunnel run to 2,250 pounds per square inch gage (psig). The Storage Tank is a 25,000 gallon cryogenic tank used to store LOX at slightly above atmospheric pressure as a external shell, with space between the shells maintained under vacuum conditions.
Document ID
20090015238
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Gilbert, Michael
(NASA Langley Research Center Hampton, VA, United States)
Raju, Ivatury
(NASA Langley Research Center Hampton, VA, United States)
Piascik, Robert
(NASA Langley Research Center Hampton, VA, United States)
Cameron, Kenneth
(NASA Langley Research Center Hampton, VA, United States)
Kirsch, Michael
(NASA Langley Research Center Hampton, VA, United States)
Hoffman, Eric
(NASA Langley Research Center Hampton, VA, United States)
Murthy, Pappu
(NASA Glenn Research Center Cleveland, OH, United States)
Hopson, George
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Greulich, Owen
(NASA Headquarters Washington, DC United States)
Frazier, Wayne
(NASA Headquarters Washington, DC United States)
Date Acquired
August 24, 2013
Publication Date
April 1, 2009
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
LF99-8594
NESC-RP-05-113/05-034-E
L-19638
NASA/TM-2009-215316
Funding Number(s)
WBS: WBS 510505.01.07.01.99
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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