In calculation or designing, how to determine the airfoil bulge (thickness)? What is the guideline or consideration in designing airplane's wing? We all know that the bulge (the ticker in the airfoil) is required to apply Bernoulli principle, to create low pressure above the wing. But how to bind the bulge requirement to the requirement. In this case, to make the airplane to be efficient (especially related to the power consumption).
This airfoil is required for an airplane as I explained here. Maximum weight will be 400kgs, and the maximum speed will be 200km/h.