耦合求解NS方程和刚体动力学方程数值研究了80°后掠三角翼强迫俯仰、自由滚转双自由度运动特性。内容包括:对比双自由度俯仰/滚转运动和单自由度滚转及俯仰运动特性的差异,研究动态俯仰角对三角翼滚转运动振幅和频率的影响以及三角翼双自由度运动条件下的气动力特性。结果表明:在动态俯仰角的影响下,细长三角翼不能形成极限环形式的振荡;俯仰运动的迟滞效应造成滚转振幅的变化落后于俯仰角的变化;俯仰耦合滚转运动将会导致飞行器升力降低,横向稳定性变差。 Coupled to solve NS equations and rigid body dynamics numerical study of 80 ° swept deltaic forced pitch, free roll two degrees of freedom movement. The contents include: comparing the difference between pitch / roll motion with two degrees of freedom and roll and pitch motion with single degrees of freedom, the influence of dynamic pitch angle on amplitude and frequency of rolling motion of delta wing, Aerodynamic characteristics. The results show that, under the influence of dynamic pitch angle, the slender delta wing can not form the limit ring oscillation; the hysteresis effect of pitch motion causes the variation of roll amplitude to fall behind the pitch angle; and pitch coupling roll motion will cause the aircraft Lower lift, lateral stability worsened.