摘要
针对锥形禁区约束研究了空间交会平移靠拢段的被动安全逼近速度计算问题。根据轨道面内外的相对运动相互解耦和轨道面外呈周期运动的特点,将三维锥形禁区约束转化为轨道面内的二维锥形禁区约束。将平移靠拢段的逼近分为V-bar逼近和任意方向逼近两种情况,分别基于相对动力学模型推导得到了安全逼近速度、失效位置和失效点到轨迹与锥形禁区边界相切点的飞行时间三者的关系式。最后的算例表明在锥形禁区约束情况下V-bar逼近相对R-bar逼近来说要求的安全速度更小。
The method of calculating safe approach velocity in the final approach phase of rendezvous under conic forbidden zone constraint is developed. Because the in-orbit plane and cross-orbit plane relative motion is uncoupled, the three dimensional conic constraint can be considered to two dimensional conic constraint in the orbit plane. The final approach is divided to V-bar approach and any direction approach, then the relationship among safe approach velocity, failure position and flight time from failure position to the point the approach trajectory tangent to the conic forbidden zone bound is developed. Test case results show the safe velocity for V-bar is small than the safe velocity for R-bar approach under conic forbidden zone constraint.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第2期659-662,共4页
Journal of Astronautics
关键词
航天器
被动安全逼近速度
锥形禁区
空间交会
Spacecraft
Passive safe approach velocity
Conic forbidden zone
Rendezvous
