Maximizing the Lift Coefficient of a Jet-Blown Contour

摘要

One of the most important characteristics of a wing profile is the value of the lift coefficient. Maximization of this coefficient is a vital problem of aerodynamic design. The lift coefficient may be increased by means of introducing various devices for flow control; of particular efficiency is the jet blow [ 1 ]. By virtue of a number of effects (the Coanda effect, supercirculation, and the effect of blown flaps), the blow yields an increase of the lift coefficient several times over as compared to the impermeable wing profile. The effect from the blow can be increased by means of changing the shape of the airfoil simultaneously with the blow.