- Jan 2, 2009
- Centre FRANCE
- I piloted gliders C800, Bijave, C 310, airplanes Piper J3 , PA 28, Jodel D117, DR 220, Cessna 150, C
- Total Flight Time
- About 500 h (FW + ultra light)
Yes Chris,The flex shaft prerotator on a Magni gyro, even though it can remain engaged during the takeoff run, certainly doesn't cut the takeoff run by 4.
The continuous launch during rolling shortens the takeoff distance only if the torque of the launcher remains the same. This is due to the increased power of the launcher, since the rotor rpm is greater.
But assuming the same power (i.e same cost and weight), then the rotor rpm at the beginning is slower because the gear ratio is different, and the propeller thrust is reduced because of the ongoing launch.
Under these conditions I believe the distance will not shortened.