A branch of physics that deals with the flow of air or other gas around an object in its relative relative motion.
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Aerodynamic forces depend on the size, shape and velocity of the object. The density, compressibility, viscosity, temperature, and pressure of the gas also affect these forces.
At low speeds, the current around the object is in the form of layers or lines and causes low drag resistance. At higher speeds, a complex flow occurs where drift is stronger.
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Stems such as air leaf are applied to maintain the layered flow even at high speeds. All aerodynamic effects are taken into account in aircraft drawings.
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