非定常超音速侧滑机翼的升力、力矩系数及动导数的数值计算

 本文利用分布在机翼平面上的非定常超音速点源的特征线网格法给出非定常超音速侧滑机翼的数值解。本文给出侧滑机翼作沉浮、俯仰、滚转谐振时的振型以及计算升力、力矩和动导数（包括交叉导数）的计算方法。按本文用非定常理论数值解对典型的无侧滑机翼计算出的动导数与常用的按准定常理论解析公式计算结果进行比较和鉴定,结果表明本文方法是令人满意的。

NUMERICAL CALCULATION OF LIFT, MOMENT COEFFICIENT AND DYNAMIC STABILITY DERIVATIVES ON SIDESLIPPING WINGS IN UNSTEADY SUPERSONIC FLOWS

This paper presents a numerical solution of unsteady supersonic flows for sideslipping wings by means of the characteristic lines network method of unsteady supersonic sources distributed on the wing plane. This paper provides the oscillating mode of undulatory, pitching and rolling harmonic oscillations of the wings with sideslip angles and the methods to calculate its lift, moment coefficient and dynamic stability derivatives （including cross-coupling derivatives）. The dynamic stability derivatives of a typical wing with sideslip angle equal to zero were worked out both by analytical formula in conformity with the conventional quasi-stationary theory and by the present method, and were compared and examined. The results show that the present method is satisfactory.