#AFRL APTO tests #EPS Graflight V-8 #diesel for unmanned aircraft; 40% less fuel than typical engine
AFRL APTO tests EPS Graflight V-8 diesel for unmanned aircraft; 40% less fuel than typical engine, less vibration 13 August 2017 The Air Force Research Laboratory (AFRL) Advanced Power Technology Office, along with Engineered Propulsion Systems and the Arnold Engineering and Development Center, recently concluded ground-based testing of an advanced diesel engine that promises to increase the utility and ease the logistics burden of military aircraft missions. The high-efficiency aviation diesel engine is a potential replacement for current manned and unmanned aircraft internal combustion engines. Designed by Engineered Propulsion Systems as part of an AFRL effort, the Graflight V-8, 4.3-liter engine is a “clean sheet” design specifically intended for aircraft use. It is liquid-cooled and capable of using either a composite or aluminum propeller. The Graflight engine uses a...