Aircraft DC Power Generation
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Aircraft Yaw Control
Aircraft Yaw Control OPERATION AND EFFECT OF YAW CONTROL RUDDERS The rudder is a vertical control surface that is usually hinged to the tail post aft of the vertical stabilizer and designed to apply yawing moments to the airplane, that is, to make it turn to the right or the left about the vertical axis. The movement of the rudder is controlled by pedals operated by the feet of the pilot. The pedals are interconnected so that when one is pressed the other one move in the opposite direction. When the right pedal is pressed, the rudder swings to the right, thus bringing an increase of dynamic air pressure on its right side. This increased pressure causes the tail of the airplane to swing to the left and the nose to turn to the right. Although it appears that the rudder causes the airplane to turn, it must be pointed out that the rudder itself cannot cause the airplane to make a good turn. Newton's first law of motion states that a moving body tends to continue moving in a straight li
Aircraft Pitch Control
OPERATION AND EFFECT OF PITCH CONTROL ELEVATORS The elevators are the control surfaces, which govern the movement of the aircraft around the lateral axis (pitch). They are normally attached to hinges on the rear spar of the horizontal stabilizer. When the control column or stick in the airplane is pulled back, the elevators are raised. The force of the relative wind on the elevator surfaces tends to press the tail down, thus causing the nose to pitch up and the angle of attack of the wings to increase. The reverse action takes place when the control column or stick is pushed forward. During flight of an airplane the operation of the elevators is quite critical, especially at low speeds. When power is off and the airplane is gliding, the position of the elevators will determine whether the airplane dives, glides at the correct angle, or stalls. Remember that an airplane will not necessarily climb when the control is pulled back. It is the power developed by the engine that determines