[wdrzal]

Originally Posted by yachtluver

i Just found something on it. This is really amazing technology and i did not know about it untill you all mentioned it just now...http://en.wikipedia.org/wiki/NOTAR
So it uses vectored thrust for direction similar to how an F-22 uses this to obtian great pitch control.
More on it here...http://www.aviationtoday.com/cgi/rw/...=0703notar.htm

Its good that we learn stuff everyday.

If you look close you will see a rectangle port on the end of the round tail boom,yaw is accomplished by the amount of bypass air allowed to exhaust there from the turbine.

There is also a Russian design,can't remember model that had no tail rotor and no vectored thrust. It simply had twin counter rotating main blades,one stacked above the other.Each rotating in a opposite direction ,canceled out the yaw torque. And of course are troop carriers that have one main rotor in the front and one in the rear also use no tail rotor.