烧蚀滞后效应引起的钝锥滚转力矩  

Roll Torque of Blunt Nosed 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

出　　处：《空气动力学学报》1999年第1期111-116,共6页Acta Aerodynamica Sinica

摘　　要：当有迎角钝锥相对于风坐标转动时，由于烧蚀滞后效应将产生滚转力矩。本文基于适当的力学模型和近似分析导出了该滚转力矩系数的解析表达式，表明该系数与α２ｓｉｎε成正比。根据结果得到的系数模数的量级是１０－６。文中还分析了它与各主要物理量的关系。Because of the effect of an ablation lag the roll torgue is produced when the blunt nosed cones at angles of attack roll relative to the wind fixed coordinates.An analytical expression of the roll torgue coefficient is reduced based on a proper mechanical model and an approximate analysis.It is showed that the coefficient is proportional to α 2·sin ε .The order of its module is 10 -6 from the results of this paper.The dependence of the coefficient on the main variables is also analyzed.

关 键 词：钝锥 烧蚀滞后 滚转力矩 理论分析 再入飞行器 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程]