在低速气流中线性弯扭升力面的等效迎角

 本文用矩阵方法给出三元机翼的一个规律。机翼在反流气动力中心处的迎角是带有线性弯扭整个机翼的等效迎角。

EQUIVALENT ANGLE OF ATTACK FOR THE LIFTING PLANE WITH LINEAR CAMBER-TWIST AT LOW SPEEDS

A law for 3-dimensional wing is provided on the basis of a matrix method.Formula（1）is its basic equation,and the definition of the equivalent angle of attack αv is given by formula（7）.A]denotes the vortex introduced matrix and AT]——the reverse-flow introduced matrix.The equivalent angle ofattack for the whole wing with linear camber-twist can be given by equations（23）,（24）,（25）,（26）,where X0,Z0 are coordinates of the aerodynamic center in reverse flow.The above conclusion is capable of substitution for the two-dimensional Pistolesi theorem.