非圧縮非粘性流体内を正弦的に脈動する速度で進行する翼の揚力理論

抄録

There are few papers for nonuniform in-plane motions of wings, practical applications of which may concern lead-lag motion of helicopter blades and motions of horizontal stabilizer in T-ail flutter. This paper presents a practical application for the basic formulation, which was developed by the present authors in reference 1. An airfoil having an arbitrary camber line is assumed to fly in a sinusoidally pulsating steam, which is inviscid and incompressible. Explicit formulae of lift distribution, lift and pitching moment are presented. The fact pointed out by ISAACS, the quasi-steady theory leads to a significant error, is confirmed in a more general way.