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How to measure the lift coefficient and drag coefficient of model aircraft respectively? Are these two values equal? How to design aerofoil with better aerodynamics?
Measurement = = topic v587, go to a university or research institute to find a wind tunnel laboratory.

The lift coefficient and drag coefficient are not equal, and their ratio is the legendary "lift-drag ratio"

It is best to calculate the aerodynamics of the airfoil through the back calculation of pressure distribution, or you just need to find a website to compare the parameters.