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Turbojet Performance and Operation at High Altitudes with Hydrogen and Jp-4 FuelsTwo current turbojet engines were operated with gaseous-hydrogen and JP-4 fuels at very high altitudes and a simulated Mach number of 0.8. With gaseous hydrogen as the fuel stable operation was obtained at altitudes up to the facility limit of about 90,000 feet and the specific fuel consumption was only 40 percent of that with JP-4 fuel. With JP-4 as the fuel combustion was unstable at altitudes above 60,000 to 65,000 feet and blowout limits were reached at 75,000 to 80,000 feet. Over-all performance, component efficiencies, and operating range were reduced considerable at very high altitudes with both fuels.
Document ID
19930089385
Document Type
Other
Authors
Fleming, W A
Kaufman, H R
Harp, J L , Jr
Chelko, L J
Date Acquired
August 16, 2013
Publication Date
August 7, 1956
Report/Patent Number
NACA-RM-E56E14
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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