Sky High

This helo has eight rotors and is very quiet!

http://www.wdg100p56.homepage.t-onli...OctoimWind.wmv

ko4ligas

which planet is it from?I wander do they just double their motors using smaller motors inother words less current or they cross them
?IDEAS?

BB_DF

About 1/2 way through this video there's an 8-rotor configured like an octogon, which I think is a much more attractive design, and is fully aerobatic. It can also keep flying with a motor out (and maybe more if they're not in the same quadrant). All you'd need to do is drive the motors in pairs, and the front/back left/right axes would line up between the rotors.

http://www.youtube.com/watch?v=vylB_vdWLFg

Sky High

Wow! That was really cool! Near the end there was a 12 rotor helo! Then they landed another 4 rotor helo on top of it and it flew around carrying that other helo! [8D]

jast

Hi!

Actually in the mentioned video, the Star-3D is virtually controlled as a quadrocopter, so always a pair of motors get the same speed command. That's the same for the Orion 8 Octocopter. Much better performance is achieved by steering each propeller separately. With this depending on the payload it's possible to fly with 2 arbitrarily stopped rotors.

A video with the enhanced controller was done during a meeting in Munich a few weeks ago:

http://video.google.com/videoplay?do...60542334918974

(you can see one stopped propeller during some movements...a cable went loose during a crash and was attached again later.)

BTW: the used components are the same as the (quadro) X-BL: http://video.google.com/videoplay?do...40279491690824

Regard
Jast

Sky High

As if orientation of the 4 rotor design wasn't hard enough to learn. The otco frame is even more difficult to visualize the nose and tail. Those pilots sure are highly skilled to be zipping around at those speeds and distances while maintaining correct orientation.