Flight Testing with Hot JP‐4 Fuel
Abstract:The hot ambient/high altitude operating environments of modern helicopters with crashworthy suction fuel systems put stringent demands on the design of fuel pumps and lines, especially when using volatile fuels such as JP‐4. Flight testing of engine/airframe fuel systems designed to meet these requirements is a task equally as stringent. A recent flight test program of the Black Hawk helicopter using hot JP‐4 fuel developed techniques which could be used on any hot fuel test program. An innovative fuel heating system was developed that quickly heats the fuel to the desired temperature without unduly “weathering” the fuel or driving off the volatile “light ends” and lowering the Reid Vapor Pressure (RVP). The tests were conducted with “worst case” JP‐4 fuel volatility (
Document Type: Research Article
Affiliations: Sikorsky Aircraft Division, United Technologies Corporation, West Palm Beach, Florida
Publication date: July 1, 1984
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