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Aircraft engine sump-fire studiesResults of ongoing experimental studies are reported in which a 125-millimeter-diameter-advanced-bearing test rig simulating an engine sump is being used to find the critical range of conditions for fires to occur. Design, material, and operating concepts and techniques are being studied with the objective of minimizing the problem. It has been found that the vapor temperature near a spark ignitor is most important in determining ignition potential. At temperatures producing oil vapor pressures below or much above the calculated flammability limits, fires have not been ignited. But fires have been routinely started within the theoretical flammability range. This indicates that generalizing the sump-fire problem may make it amenable to analysis, with the potential for realistic solutions.
Document ID
19770011160
Document Type
Conference Paper
Authors
Loomis, W. R. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: Aircraft Safety and Operating Problems
Subject Category
AIR TRANSPORTATION AND SAFETY
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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