Propulsion
GA-ASI Performs First Flight of New Heavy Fuel Engine for Gray Eagle ER External
General Atomics Aeronautical Systems, Inc. (GA-ASI) conducted the first flight of its new 200-horsepower heavy fuel engine on a Gray Eagle aircraft at its El Mirage flight facility on May 9, 2023. The Heavy Fuel Engine (HFE) 2.0 is being considered by the U.S. Army to become the