![]() In reality, a shape such as an aircraft wing (airfoil) moves through a stationary # air column, which is not the case in wind tunnels. A typical 'special action' is the deliberate induction of lateral force as a result of longitudinal movement. Manipulating aerodynamics means altering a shape to perform special actions as a result of such movement. Improving aerodynamics simply means altering a shape to enable it to travel through a gas with greater speed whilst requiring less energy to do so. Where v s is the velocity of the shape, and v g is the velocity of the gas in the direction of travel. All we are interested in is the relative movement i.e. our atmosphere) through which it is moving either a stationary shape within a moving gas, or a moving shape within a stationary gas, or a moving shape within a moving gas. In aerodynamics, 'air-speed' refers to the velocity of a shape relative to a gas (e.g. Aerodynamics Calculator (wings & spoilers)Īerodynamics is a term used to describe the performance of a shape travelling within a gas, albeit it more accurately refers to the behaviour of the gas through which a shape is travelling.
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