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Old 03-28-2009 | 01:47 AM
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From: Willis, TX
Default RE: rudder & roll

Hey wzak29. Here's about the best explaination I can give for controlled turns since you have a simulator program on your computer. Go into "Chase Mode" and observe the aircraft when doing turns at medium to low speed. Without the rudder input you'll notice how the aircraft will try to keep flying in a straight line but with a little rudder it will follow the curve nicely. A high wing trainer style will handle turns just fine with only rudder deflection. Three channel basic trainers have no ailerons. The rudder throw provides for course change. The roll this causes is because as the rudder is applied and the aircraft begins to turn in the direction of the rudder throw, the wing on the outside of the turn is having to travel through the air faster than the wing on the inside of the turn. The outside wing gains lift and the inside wing loses lift; therefore, the degree of roll is proportinal to the amount of rudder deflection. You may notice that on many sport planes and combat versions (i.e., the P-51) there is a smaller amount of rudder above the horizontal stabilizer than below it. This decreases the amount of roll induced by the rudder deflection. On your simulator, try using the rudder to make slow gentle turns and use the elevator to maintain your altitude. I'll bet you find that it flies more gracefully than it did when you were using just the ailerons. Later, try working the alierons into the turns. Best of flights to you. Gordon.