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Alternate aircraft fuels: Prospects and operational implicationsThe potential use of coal-derived aviation fuels was assessed. The studies addressed the prices and thermal efficiencies associated with the production of coal-derived aviation kerosene, liquid methane and liquid hydrogen and the air terminal requirements and subsonic transport performance when utilizing liquid hydrogen. The fuel production studies indicated that liquid methane can be produced at a lower price and with a higher thermal efficiency than aviation kerosene or liquid hydrogen. Ground facilities of liquefaction, storage, distribution and refueling of liquid hydrogen fueled aircraft at airports appear technically feasibile. The aircraft studies indicate modest onboard energy savings for hydrogen compared to conventional fuels. Liquid hydrogen was found to be superior to both aviation kerosene and liquid methane from the standpoint of aircraft engine emissions.
Document ID
19770021378
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Witcofski, R. D. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1977
Subject Category
Propellants And Fuels
Report/Patent Number
NASA-TM-X-74030
Accession Number
77N28322
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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