出典:Wiktionary
出典:『Wiktionary』 (2024/08/10 04:28 UTC 版)
JP-7 (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/16 20:02 UTC 版)
JP-7 (Jet Propellant 7, MIL-DTL-38219) is a jet fuel developed by the U.S. Air Force for use in supersonic aircraft because of its high flash point and thermal stability. It is the fuel used in the Pratt & Whitney J58 engines, used in the Lockheed SR-71 Blackbird. The air compression of Mach 3+ cruising flight generates very high skin temperatures, therefore this special fuel was needed. The story told by Ben Rich in his book Skunk Works is that a lit match can be dropped in a bucket of JP-7 and the fuel will not ignite, and the match will be extinguished (although this is common in any low-volatility fuel including kerosene and diesel).