Originally posted by Wings
Outcast,
All full scale pilots are taught that there are four factors that cause the airplane to Yaw and turn right, 1 Torque, 2 P-Factor, 3 slipstream effect, 4 gyroscopic procession. Torque is a significant factor and I believe any full scale pilot will tell you that a plane will require right rudder when giving gas, and left rudder when cutting power.
P factor has nothing to do with "Roll the wings right the fuselage yaws left”. That is caused from induced drag. The down aileron has more drag than the up aileron causing a slight tendency to pull the nose right or left just as the roll starts. (No where near as big of an affect as torque. )
I am a full scale pilot with over 3,000 hours, 1000 in conventional gear craft.
Torque is not one of the primary factors in the use of right rudder in aircraft, P-factor is and this is commonly misunderstood. The amount of P-factor is proportional to the props ability to absorb the engines torque. You are correct that P-factor does not roll the wing, and thats what I said in my last post. Slip stream does have a small effect on short coupled planes but not much. Gyroscopic procession has nothing at all to do with this discussion, it is the tendency for a gyroscope to drift opposite the direction of rotation over long periods of time, the reason we check the directional gyro once an hour, so unless your flying a LeRhone radial it's no concern. Induced Drag is a by-product of the generation of lift, when the aileron goes down it effectively increases the camber of the airfoil, this camber increase now produces more lift and thus more induced drag, the aileron itself is not responsible for the increase in drag.
