(Hybrid-) electric aircraft require fundamentally new propulsion technologies ... economic feasibility and social acceptance, all of which pose challenges. The most promising overall concepts require ...

Commercial aviation poses a much greater challenge. Theoretically, hydrogen, hybrid-electric and battery electric could contribute to more carbon efficient commercial aircraft. Practically ...

That presents several challenges. In big cities space is ... In their favour, electric aircraft are much simpler than helicopters or passenger jets, so mechanically there is much less to go ...

Narrator: What could a future with electric planes look like ... Starting in 2015, the solar-powered aircraft spent 16 months flying around the world, except it flew at an average speed of ...

It includes two 700-kilowatt magni650 electric engines. One of the biggest challenges for all-electric aircraft is the weight of the batteries, and Alice has quite a load of them. The battery ...

Still, electric aircraft that can travel long distances remain a big challenge for the sector. Electrical motors, generators, power distribution and controls have advanced rapidly but battery ...