Due to the great improvements in battery technology, batteries became more lightweight and able to store more energy.
Recently the aircraft company Sikorsky announced the creation on an all-electric helicopter that will be powered by new generation lightweight batteries.
Dubbed Firefly, the helicopter has been based on Sikorsky’s S-300C trainer.
It is worth mentioning that the current helicopter uses a 200hp electric motor powered by lithium ion batteries. Previously such helicopters were powered by a 190hp 4-cylinder gas engine.
The presentation of the electric helicopter will take place at the EAA Airventure in Oshkosh. The Firefly is able to stay in the air for only 15 minutes.