French hybrid-electric aircraft startup VoltAero is developing a power module for use in multiple applications including helicopters. The hybrid power module is based on the propulsion system under development for the company’s Cassio regional aircraft. The module combines a 300-kW (400-hp) internal combustion engine with three 60-kW electric motors. These multiple sources of energy ensure safe operation by using one source of power—electrical or thermal—or both, ...


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