Hmmm....
That's a teetering head isn't it? How can a teetering head run with lift imbalance? The only way to balance the lift at mu>1 is to use reverse velocity airflow over retreating blade. Unless there is a specialised control system this requires collective is down and cyclic is forward (assuming gyro precession of 90 degrees). Interesting how the accident involved rolling to the left and autorotation...
Must admit to being more comfortable with the idea of a rigid rotor for high mu. Even better if there are two, whether coaxial, intermeshing or interleaving. In this case the wings are just optional. Rotor&wing on one machine will have increased hover power and increased high speed drag over counter-rotating rotor system. Me prefer Sikorsky ABC approach...
Mart
[Edit: 'cos i gets my gyros confused sumtimes - don't we all...]
Last edited by Graviman; 22nd June 2005 at 18:52.