French startup VoltAero has begun the phased development of a hybrid-electric aircraft that offers a range of propulsion options to optimize energy use depending on the mission profile. “I call it an airplane a la carte,” says CEO Jean Botti, former chief technology officer at Airbus. Available with four, six or nine seats, the Cassio is a series/parallel hybrid design able to fly as a pure electric aircraft over ranges up to 200 km (108 nm) at 200 kt., as a battery-assisted ...


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