Kawasaki Motors and French hybrid-electric aircraft developer VoltAero have joined forces to collaborate on testing and certifying a range of gasoline piston engines and a liquid hydrogen-fueled engine for aircraft. This partnership was officially announced at the Farnborough Air Show, where the companies presented their roadmap for hybrid-electric and hydrogen propulsion development over the next decade. Kawasaki's initiative involves delivering high-power, supercharged gasoline engines by 2030, with plans for converting them to run on hydrogen and other e-fuels by 2035, resulting in up to a 50% reduction in fuel consumption. VoltAero will integrate these engines into their Cassio aircraft models, with the first five-seat Cassio 330 set to be certified and flying by 2027. The company also revealed plans for larger pressurized variants of the Cassio in the future. Additionally, the partnership encompasses testing the Cassio 330 for business aviation applications and the upcoming inauguration of VoltAero's manufacturing facility in Rochefort, France in September. Both companies expressed optimism about the potential of reciprocating engines, particularly their ability to contribute to carbon neutrality in aviation and potentially challenge turbines in terms of cost and emissions efficiency.