# Aerodynamics

May 8th, 2015
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is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a solid object, such as an airplane wing. Aerodynamics is a sub-field of fluid dynamics and gas dynamics, and many aspects of aerodynamics theory are common to these fields. The term aerodynamics is often used synonymously with gas dynamics, with the difference being that "gas dynamics" applies to the study of the motion of all gases, not limited to air.

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AerodynamicsAerodynamicsThe study of how gases interact with moving bodies. Because the gas that we encounter most is air,aerodynamics is primarily concerned with the forces of drag and lift, which are caused by air passing over and around solid bodies. History1726,Sir Isaac Newtonbecame the first person to develop a theory of air resistance, making him one of the first aerodynamicists. 1738, Dutch-SwissmathematicianDaniel BernoulliwithHydrodynamica, in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today asBernoulli's principle, which provides one method for calculating aerodynamic lift. 1757, Leonhard Euler published the more general Euler equations, which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier-Stokes equations. The Navier-Stokes equations are the most general governing equations of fluid flow and are difficult to solve. 1799, Sir George Cayley became the first person to identify the four aerodynamic forces of flight (weight, lif

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