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Dynamic, Hot Surface Ignition of Aircraft Fuels and Hydraulic Fluids

Report Number: AFAPL TR 79-2095
Author: Myronuk, Donald J.
Corporate Author: San Jose State University
Laboratory: Aero Propulsion Laboratory
Date of Publication: 1980-10-01
Pages: 47
AD Number: ADA094382

The dynamic surface ignition characteristics of aircraft fuels and hydraulic fluids were investigated on heated stainless steel and titanium surfaces. Local air flow (0.8 to 50 meters per second) (2.4 to 152.4 ft/sec) effects were measured. aircraft fuels evaluated on titanium surfaces ignited (25 to 75 C) (77 to 167 F) lower (500 to 600 C) (932 to 1112 F) than values required to ignite the fuels on a heated stainless steel surface. Higher local surface air speeds necessitated higher surface temperatures for ignition of an applied fluid. The same trends were noted for hydraulic fluids sprayed on the heated surfaces.

Rick Gaines
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