Any reason why 300 rpm pre-rotation take offs, minus the quick lift off, shouldn't be standard? It would remove rotor rpm management/increase from the pilot's do to list during take off roll. Given 43% of all gyro accidents are during take off, a simplified take off procedure may help reduce that.
I'm no expert but I believe the answer is that higher take off rotor rpm increases the wear and tear on the pre-rotator mechanism. So if you don't need to, it's better for the aircraft to allow your forward speed to increase the rotor to takeoff speed.
Hello Ron, yes some can - and it all depends on the flight RRPM for that aircraft/load/conditions. Good "Jump" takeoff usually needs more power to the rotor than most pre-rotators offer, collective pitch control, and (usually) extra weight in the rotor tips to store the extra energy needed. eg Cartercopter here: ua-cam.com/video/jivUedTf66s/v-deo.html Set low pitch, spin up to the max, disconnect pre-rotator & crank up the pitch. And a big Cierva here:- ua-cam.com/video/ly261Dt1Of8/v-deo.html
I have never ever seen anyone touch down that Soft, and repeatedly.
That was phenomenal !
Outstanding maneuvering skill !!!
Amazing flying Jim, can't wait to have a go myself!
Lovely flying, such polished landings. Looks so effortless! ;
Fabuloso !!!
Any reason why 300 rpm pre-rotation take offs, minus the quick lift off, shouldn't be standard? It would remove rotor rpm management/increase from the pilot's do to list during take off roll. Given 43% of all gyro accidents are during take off, a simplified take off procedure may help reduce that.
I'm no expert but I believe the answer is that higher take off rotor rpm increases the wear and tear on the pre-rotator mechanism. So if you don't need to, it's better for the aircraft to allow your forward speed to increase the rotor to takeoff speed.
The Sportcopter M2 can do routine 300rpm take offs
Nice demo, Jim.
Can the pre-rotator spin the rotor that fast? What about a jump takeoff is that possible at a higher rotor speed?
Hello Ron, yes some can - and it all depends on the flight RRPM for that aircraft/load/conditions. Good "Jump" takeoff usually needs more power to the rotor than most pre-rotators offer, collective pitch control, and (usually) extra weight in the rotor tips to store the extra energy needed.
eg Cartercopter here: ua-cam.com/video/jivUedTf66s/v-deo.html
Set low pitch, spin up to the max, disconnect pre-rotator & crank up the pitch.
And a big Cierva here:-
ua-cam.com/video/ly261Dt1Of8/v-deo.html
@@250tegra hmm ty
100 rotor RPM takeoff IS advanced, 300 RPM is pure fun!! :) :)
This Jim Can't Swim?