A Theoretical Method for Calculating the Aerodynamic Characteristics of Arbitrary Jet-Flapped Wings. Volume I. The Elementary Vortex Distribution Jet-Wing Lifting Surface Theory.

Abstract : The report describes a lifting surface theory for calculating the aerodynamic characteristics of jet-flapped wings. Based on a finite-element scheme - the method of Elementary Vortex Distribution or the EVD method, the wing and jet sheet are represented by a set of overlapped elementary vortex distributions. A solution is obtained by satisfying a set of mixed-type boundary conditions on both the wing and jet sheet. The EVD method, as described, provides the following: spanwise and chordwise loading; spanwise variation of induced drag; a capability to investigate the effects of part span flaps, part span blowing, rolling, yawing, pitching, and sideslip; and total lift and induced drag (momentum method), pitching moment, yawing and rolling moments, and side force. (Modified author abstract)