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Honeywell says it has completed initial testing of renewable jet fuel on its TPE331 turboprop engine, its TFE731 engine and a commercial Auxiliary Power Unit, with performance and fuel economy results comparable to typical aviation fuels.

For the past several months, Honeywell has been testing a biofuel blend developed by UOP LLC, a Honeywell subsidiary based in Des Plaines, Ill., which is 50 percent jatropha and algae-based biofuel, and 50 percent petroleum-based fuel.

The engine tests included evaluation of combustion characteristics and a full-engine test for the TPE331 turboprop engine.”Test results indicate biofuel blends can be used safely for aviation, including business aircraft powered by Honeywell engines and APUs, with no effect on engine performance or operation,” added Rich.

In this process, hydrogen is added to remove oxygen from the biological feedstock resulting in a high quality, bio-derived fuel that blends seamlessly with petroleum-based fuel and acts as a drop-in replacement. The fuel meets all the critical specifications for flight.

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