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Offtopic: Helicopters don?t need tail rotors !

Started by hartiberlin, October 16, 2007, 05:56:41 PM

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hartiberlin

October 16, 2007, 05:56:41 PM
Very interesting new invention:

http://www.youtube.com/watch?v=kvP_bZt65d0

Forward to about minte 4:00 to see it fly.
Stefan Hartmann, Moderator of the overunity.com forum

Pirate88179

#1
October 26, 2007, 01:09:56 AM
Very interesting.  I don't understand what control changes the direction then?  I am familiar with NOTAR and also, my favorite, the co-axial twin rotors, but what allows the 180 degree change in direction with this design?

Bill
See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen

albert

#2
October 27, 2007, 04:49:55 AM
I think this is ridiculous. A helicopter that cant hover....all those guys never learned to hover and yet they still want to fly a helicopter.so this is the lazy man's approach...

Chad

#4
December 14, 2007, 08:22:47 PM
Quote from: raburgeson on December 14, 2007, 01:09:52 PM
Apparently,

http://www.youtube.com/watch?v=2IghwseoISc

http://www.youtube.com/watch?v=rQOB9d09x6A

They don't need any rotors at all. (not a model)

it does seem as though they arnt moving but the rotors are curved upwards indicating they are supporting weight, so maybe it is just the fps that are equal to the rpm of the rotors making them apear motionless.
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