DESIGN AND OPTIMIZATION OF AIRFOILS IN NONSTALLING INCOMPRESSIBLE-FLOW WITH A PRESCRIBED RANGE OF THE ANGLE OF ATTACK

A simple and reliable method of aerodynamic design of airfoils is proposed for a given range of the angle of attack. The method is based on the solution of a new inverse boundary-value problem of aerohydrodynamics. In the problem the initial velocitv distributions are given along the contour of the required airfoil as a function of the arc co-ordinate for extreme values of the angle of attack from a fixed range. We justify a method of choice of these distributions which guarantees a non-stalling flow around the airfoil. The problem of airfoil optimization is also considered. Results of numerical calculations are presented.