Sikorsky introduced an all-electric helicopter technology demonstrator, “Project Firefly,” at an electric aircraft symposium at EAA AirVenture. Sikorsky replaced the propulsion system of an S-300C helicopter with a 190-hp electric motor and digital controller from U.S. Hybrid, powered by a lithium ion energy storage system from Gaia. Integrated sensors provide real-time aircraft health information to the pilot through an integrated interactive LCD monitor. Eagle Aviation Technologies, LLC ...


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