Add Yahoo as a preferred source to see more of our stories on Google. Wild aircraft are the hallmark of AirVenture, the world’s largest get-together for pilots, which starts today in Oshkosh, ...

How hybrid-electric aircraft can cut CO 2 emissions by 50% or more along with offering dramatically lower operating costs. Low power densities of today's batteries make all-electric flight impractical ...

Hybrid-electric aircraft combine the best of electrical and conventional propulsion systems, enabling today's battery technologies to do most of the "heavy lifting" in smaller commercial aircraft.

HPU 210 uses a Kawasaki motorcycle engine combined with an electric motor and batteries VoltAero’s new HPU 210 hybrid-electric powertrain could be used by people building their own light aircraft.