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  #22  
Old October 4th 05, 07:02 AM
George Vranek
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Nick,

here are my answers on your concerns.

"Nick Lappos" schrieb im Newsbeitrag
...
George,

I have seen that arrangement before, it seems to have the ability to blend
the properties of a helicopter and a wing, but there are enormous

practical
considerations to be overcome before it could fly. None are deal-killers,
but the sum of them is quite a bit of development work to assure

production
capability. Mostly, concerns center on the 1) structural capability of

the
rotors, which have virtually no hinge (about 50% hinge offset) .....but

thanks to the GFRP technology, the helicopters with hingeless rotors are
quite succesfull.

and 2) the
ability to stop/stow and redeploy while airborne, with the tremendous
stresses and dynamic changes inherent in that trick.....the trick is in

the sequency: first stow, than stop and first rotate, than redeploy. It is
even possible to keep the disk in a slow rotation after stowing the
rotorblades and use it as a small AWACS.

The X-wing tried that
(with a larger rotor) and was never successful, in the end.....but the

X-wing equipped with the disk rotor could be the world first supersonic
helicopter!!!


Certainly, the Diskrotor tries to win back some low disk loading, a very
good first step!....thanks for the flowers....and not only this! The disk

brings law and order in to the aerodynamic of a helicopter rotor.

Nick