NDLI: Experiments on fuel heating for commercial aircraft

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Experiments on fuel heating for commercial aircraft

Content Provider	NASA Technical Reports Server (NTRS)
Author	Friedman, R. Stockemer, F. J.
Copyright Year	1982
Description	An experimental jet fuel with a -33 C freezing point was chilled in a wing tank simulator with superimposed fuel heating to improve low temperature flowability. Heating consisted of circulating a portion of the fuel to an external heat exchanger and returning the heated fuel to the tank. Flowability was determined by the mass percent of unpumpable fuel (holdup) left in the simulator upon withdrawal of fuel at the conclusion of testing. The study demonstrated that fuel heating is feasible and improves flowability as compared to that of baseline, unheated tests. Delayed heating with initiation when the fuel reaches a prescribed low temperature limit, showed promise of being more efficient than continuous heating. Regardless of the mode or rate of heating, complete flowability (zero holdup) could not be restored by fuel heating. The severe, extreme-day environment imposed by the test caused a very small amount of subfreezing fuel to be retained near the tank surfaces even at high rates of heating. Correlations of flowability established for unheated fuel tests also could be applied to the heated test results if based on boundary-layer temperature or a solid index (subfreezing point) characteristic of the fuel.
File Size	2066012
Page Count	15
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820018607
Archival Resource Key	ark:/13960/t13n7036f
Language	English
Publisher Date	1982-01-01
Access Restriction	Open
Subject Keyword	Propellants And Fuels Low Temperature Tests Heating Fluid Flow Commercial Aircraft Cold Weather Tests Jet Engine Fuels Freezing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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