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

摘要

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)