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US switching to diesel in UAV's

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8:37 pm
April 21, 2008


kymhorsell

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[What's old is new again...]

Swift to fly small heavy fuel engine in Killer Bee

Swift Engineering will fly an XRDi 15hp (11kW) heavy fuel engine on a Killer Bee unmanned air vehicle by mid-to-late May, with the effort aligned with the US military's "one fuel mandate", aimed in part at replacing gasoline-powered UAV engines in war zones with powerplants that can run on diesel.

Andy Allen, chief technology officer for XRDi, says the logistics of carrying specialised fuel, as well as problematic fuel quality and contamination, have been the topics of much concern among UAV operators in Afghanistan and Iraq. Contamination can occur as trucks that typically haul diesel fuel are then tapped as 100LL aviation fuel tankers, he says. Efforts to use Iraqi-produced aircraft fuel have not been successful, he adds, in part because octane levels are too variable.

http://www.flightglobal.com/articles/2008/04/17/223024/swift-to-fly-small-heavy-fuel-engine-in-killer-bee.html

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