![]() ![]() Active controls encompass automatic systems which result in performance improvement of the aircraft by allowing reductions in structural weight or aerodynamic drag, while maintaining the desired integrity of the structure and stability of flight. ![]() Such systems include automatic pilots, stability augmentation systems, automatic landing systems, and active controls. This is especially true if the engine exhaust can be directed to produce pitch or yaw motions.Īuxiliary flight controls may include trimming devices for the primary flight controls, as well as landing flaps, leading-edge flaps or slats, an adjustable stabilizer, a wing with adjustable sweep, dive brakes or speed brakes, and a steerable nose wheel.Īutomatic controls include systems which supplement or replace the human pilot as a means of controlling the attitude or path of the aircraft. In the case of vertically rising aircraft, a lift control is provided.Ĭontrols to govern the engine power and speed, while not usually classified as flight controls, are equally important in the overall control of the aircraft. These surfaces are operated by the human pilot in the cockpit or by an automatic pilot. ![]() In the case of many conventional airplanes, the primary flight controls utilize hinged, trailing-edge surfaces called elevators for pitch, ailerons for roll, and the rudder for yaw. Flight controls are classified as primary flight controls, auxiliary flight controls, and automatic controls. The devices and systems which govern the attitude of an aircraft and, as a result, the flight path followed by the aircraft. ![]()
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