The Red Bull BO-105 Twin engine heli doing back flips.
The pilot is said to be Chuck Aaron, the only pilot with license in aerobatic at the moment.
A well designed helicopter is a thing of beauty. This BO-105 rocks. New composite rotors and heat treated carbon-fiber bodies are amazing.
how long have they been around i recall a chopper similar back in the Seventies doing a high to low alt auto gyration without full landing.
Actually you can’t hover upside down in a helicopter. You can only plum it. Saying that you are hovering means that your altitude is constant. If you reversed the blades on a helicopter then yes it would hover upside down, but it would never get off of the ground.
Check out this video of an insane RC helicopter doing loop, rolls and dancing in the sky to see what helis can do!!
its called plane prop, hes using the prop just like on a plane, with the heli tunes and balanced out correctly, he is able to fly like that, not to mention the endless amounts of skill, thats good flying!