前縁はく離および付着流れにおける可撓面細長三角翼の横風効果について

抄録

A wing with flexible surface have possibly unique aerodynamic characteristics due to an interference in aerodynamic force. Particularly in slender parawing, a pair of separation vortex formed above the wing have an important effect upon the wing shape and at the same time, the wing shape affects the position and the strength of the vortex.
In the present paper, the flow past a yawed slender parawing with and without leading-edge separation is considered by using the BROWN and MICHAEL's line vortex model and comparisons are made between them.
As the result, it is shown that the position of the vortex with yaw angle affects largely the leading-edge gradient of the wing shape but it does not lead to a severe change of the normal force CN and the rolling moment Cl, except for an intermediate value of wing tension. And it is also shown that the values of CN and Cl in the separated flow are a few times larger than those in the attached flow for a certain range of wing tension.