Originally Posted by
GABROO
Dear Gheghis
In my opinion it may not be as simple as it sounds. The helicopter design philoshy is based on its intended use (performance envelope). It has been observed in most of the helicopters which I had flown that there was sudden deterioration in the performance when reaching at the edge of its flight envelope. This was either because of the engine design(thermal/power margin) or because of some airframe related(Rudder/control margins).
regards and happy hovering
Apologies if I gave the impression that I thought you had a simple problem - not my intention at-all. What I was trying to say was that if the manufacturer can't or won't help (presumably for much the reasons that Rich Lee has said) then your best bet in trying to *understand* the scale of the problem may be to go back to basic helicopter design texts, look at the performance issues yourself, and try and scale what the helicopter you really want looks like in terms of size, power, and control authority. It won't give you the helicopter you want, but may at-least tell you *what* you want.
G