What is it about?
Where does the lift of an aerofoil come from? It was usually explained with the help of Bernoulli integral: the fluid velocity on the upper surface is larger than that of the lower surface, which leads to a lower pressure on the upper surface than that of the lower surface. But is it the real truth? This paper aims to clarifying this myth, as well as the underlying physical mechanisms.
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Why is it important?
Lift is the reason why we human beings can fly with the help of airplanes. With a better understanding of the origin of lift, we can achieve a safer, faster, and quieter flight.
Perspectives
This paper successfully explained the origin of lift with respect to vorticity dynamics. It can be very useful supplementary materials in education of aerodynamics and fluid mechanics.
Dr Luoqin Liu
Peking University
Read the Original
This page is a summary of: The Origin of Lift Revisited: I. A Complete Physical Theory, June 2015, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2015-2302.
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