The turbine engines, which are located beneath the wings, provide the thrust to overcome drag and push the airplane forward through the air. Modern airliners use winglets on the tips of the wings to reduce drag. The air resists the motion in the form of aerodynamic drag. To generate lift, the airplane must be pushed through the air. The wings generate most of the lift to hold the plane in the air. The airplane shown in the figure is a turbine-powered airliner which has been chosen as a representative aircraft.įor any airplane to fly, one must lift the weight of the airplane itself, the fuel, the passengers, and the cargo. Airplanes come in many different shapes and sizes depending on the mission of the aircraft. Airplanes are transportation devices which are designed to move people and cargo from one place to another.
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