Jerry wrote: > The need to apply right rudder in 3 control airplanes when operating > at higher angles of attack is primarily due to P factor. Jerry, I can't say what proportion of the yaw effect is from p-factor and what is from the spiraling slipstream. P-factor is, certainly, significant as felt in my three-control Coupe which needed significant right rudder on climb-out.
But, is this 74% p-factor and 26% slipstream or what, I just don't know. I do know that the spiraling slipstream hitting the side of a conventional tail was an expressed factor in the Coupe's H-tail design. Sorry I can't cite a source for that. It ain't that way just to be pretty. Ed
