Helicopter Is Full Of Compressed Air
Ca ne marche pas, mais c'est intéressant et enrichissant 😉

Tom likes to build little helicopters and decided to build one that runs on compressed air. (Video, embedded below.) Turns out it was a little harder than he thought. Originally, he was trying for a compressed air quadcopter. He’d already worked with an air turbine, but putting on a vehicle that can lift itself into the air turns out to have a lot of hidden gotchas.
via Hackaday : lire l’article source