4 ms·
How do you control attitude with just two contra-rotating rotors? I've Googled, but can't find an answer. Extra points for why NASA chose this mode, and terres
by foxylad 5y ago
How do you control attitude with just two contra-rotating rotors? I've Googled, but can't find an answer.
Extra points for why NASA chose this mode, and terrestrial drones don't?
- duffmancd 5y agoThere is a little more information in this hackaday article [1]. Both propellers have swashplates like a helicopter which allows them to control the pitch of each rotor. [1] https://hackaday.com/2020/09/02/an-up-close-look-at-the-first-martian-helicopter/ https://hackaday.com/2020/09/02/an-up-close-look-at-the-firs...
- dirkt 5y agoThis video https://www.youtube.com/watch?v=GhsZUZmJvaM https://www.youtube.com/watch?v=GhsZUZmJvaM explains it: they can change the attack angle of rotor blades for different positions, which produces a torque, though you have to compensate for the gyroscopic effect, which lags behind. Humans cannot fly this, but computers can. The video also explains why the chose two contra-rotating rotors instead of a quad-copter design.