John0] wrote:

In article , David Windhorst
wrote:



John0] wrote:



much interesting info snipped



Controlled Descent ?

The next question you are probably asking yourself is: "Does the pilot
retain control of the helicopter?" The answer is yes. The pilot will
still have complete control of his descent and his flight controls. The
majority of helicopters are designed with a hydraulic pump mounted on
the main transmission.



Is this how the anti-torque rotor is driven in the event of powerplant
failure?



Absolutely.

The tail rotor is powered by a driveshaft which receives output from
the main transmission. As long as the main rotor and main transmission
continue to rotate, the tailrotor will do likewise.

John


Did Igor work out all this stuff early on, or did it evolve with each
new generation of helos? I mean, were the VS 300 and R4 capable of
controlled autorotation, etc.?