Voltaero’s Cassio hybrid plane is “Mild”

The somewhat different hybrid-electric aircraft

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By Scott Hamilton and Bjorn Fehrm

Oct. 10, 2022, © Leeham News: A French company, Voltaero, is taking a different approach to the plethora of concepts to produce a “green” aerial vehicle.

The Cassio family of aircraft uses a Mild Hybrid to avoid the pitfall of most hybrids, the need for a large battery. Batteries of today and tomorrow are too heavy to serve as the main power source for an aircraft unless it’s a flight around the airport like for trainers.

Voltaero designed a clever hybrid scheme that allows electric flight where it matters and leaves a thermal engine to do the rest. The concept, called a “Mild Hybrid,” keeps the advantages of the electric flight mode without the disadvantages of short-range or an expensive operation.


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