AFRL Advanced Power Technology Office tests high-efficiency engine for unmanned aircraft
The AFRL Advanced Power Technology Office’s High Efficiency Innovative Aviation Diesel Engine is shown here in the Arnold Engineering Development Complex T-11 Test Cell. The Graflight engine, developed by Engineered Propulsion Systems, could offer extended range and greater fuel options for unmanned aircraft missions. (AEDC photo)

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Photo by: Arnold Engineering and Development Complex |  VIRIN: 170717-F-FX606-001.JPG