The goal, being worked on by companies other than UOP as well, is a biofuel that works as well as the kerosene-based JP-8. DARPA is calling for the bio-jet fuel to be produced "from biofeedstock with 90% conversion efficiency, by energy content, reducing waste and production costs," writes Graham Warwick in Flight Global.
While this new fuel cell technology is only directed at military use, it is another example of how technology is trying to catch up with the needs of real life. In real life combat situations, the military would love to have a silent, efficient way to generate the electricity that they need, and they also require that the system use heavy fuels that can be made to function out in the field. Diesel is their fuel of choice, and in this case, a synthetic diesel fuel was successfully used to generat
Ethanol and biodiesel both have great characteristics for vehicle transport, but what do you use if you want a renewable jet fuel? Biodiesel does not have the extremely low temperature performance for high altitude flight and ethanol is not dense enough and contains only around half the energy content of jet fuel per gallon.
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