ORIGINAL: speedracerntrixie
ORIGINAL: jkpape
The need for right rudder during take-off is primarily from the airflow hitting the vertical stab. Right rudder is also required during take-off in a tricycle aircraft. This assumes that the engine turns clockwise when viewed from the cockpit. P-factor & torque also come into play during take-off. P-factor effects all aspects of flight, but is more pronounced in high angles of attack. I've been flying full scale for 20 something years. A good demonstration of p-factor is go into a climb, then take your feet of the rudder peddles. The nose of the plane will go to the left. Very quickly at that.
P-factor: During a climb, the ascending blade has a lesser angle of attack than the descending blade. RE: the ascending blade is taking a very little bite of air while the descending blade is taking a great big bite.
Joe
W are still talking about models right? it really burns me when someone well read in full scale theory/practice comes into a thread and puts up info that has little to no use on the REMOTE CONTROLED airplane we are adderssing. For decades it has been common practice to add right thrust to an airplane that has a tendancy to yaw left under power. Call it torque, P factor or spiral slipstream, who cares.............the fix is right thrust.
Model or full scale, the physics of flight are the same. You can't change the laws of physics:-( No amout of adding right thrust to your engine is going correct for not knowing how to use the rudder.