再入旋转钝锥的烧蚀滞后滚转力矩计算  

Calculation of Roll Torque of Spinning Reentry Blunted Cones in the Effect of Ablation Lag

作　　者：徐书轩[1] 方一川[1] 

机构地区：[1]中国科学技术大学,合肥230026

出　　处：《空气动力学学报》2000年第4期421-426,共6页Acta Aerodynamica Sinica

摘　　要：有迎角的旋转钝锥由于周向烧蚀滞后将产生滚转力矩。在本文方法中 ,将“轴对称比拟”关系推广应用于切应力和烧蚀滞后滚转力矩计算 ,并给出引射率和粗糙度对壁面摩擦系数联合影响的表达式 ,切应力、热流率和无粘流线都在变熵条件下计算。Roll torque is produced due to the effects of circumferential lag of ablation for a spinning blunt-nosed cone at angles of attack . In this method the axisymmetric analogue relation is extended to apply to the computations of shear stress and ablation roll torque, and the expressions of combined influence of injection and roughness on skin friction coefficient are summarized. The shear stress, heat flux and inviscid streamlines are computed under variable entropy conditions. With some examples, the effects of flight parameters and circumferential lag angles on the roll toque coefficients are analyzed.

关 键 词：钝锥 烧蚀滞后 切应力 热流率 滚转力矩 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]