coondoggie writes "It may never make it into everyday jet-fighter use, but NASA is checking out biofuel made from chicken and beef fat. The chicken fat fuel, known as Hydrotreated Renewable Jet Fuel, was burned in the engine of a DC-8 at NASA's Dryden Flight Research Center as part of its Alternative Aviation Fuels Experiment, which is looking at developing all manner of biofuel alternatives to traditional Jet Propellant 8. The DC-8 is used as a test vehicle because its engine operations are well-documented and well-understood, NASA says."
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