posted on Feb, 21 2009 @ 11:25 AM
There's an interesting fact about the rotor-tip propelled design. Look at the rear of the aircraft. What do you notice? Or, more accurately, what is
not there to be noticed?
Answer: Tail rotor. When turning the shaft one way with a huge motor you get the same force trying to spin the whole helicopter the other way. That's
what you need a tail rotor, to keep it straight. With the jets just acting on the rotor itself, there's no force spinning the helicopter, too. So you
don't need a tail rotor, meaning fewer moving parts, and a generally safer and easier-to-maintain helicopter.
Also, I believe I saw one of these several years back for somewhere around $14,000 US pre-assembled.