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作为航天飞机有效负载的空间望远镜是一个自由飞行器,其定向控制系统使光轴从天球的一个目标星区域转向另一个目标星区域,然后,保持对目标星的精确指向,它能使望远镜在18分钟或更短的时间内作90°机动,既能从航天飞机上展伸出来,也能由航天飞机收回。定向控制系统包括指令发生器,控制系统,姿态修正分系统和动量管理分系统。利用精确导航敏感器(在精确定向期间用于修正姿态),速率陀螺组件(在精确定向和机动期间用于提供速率和短期姿态信息)以及反作用飞轮(用来提供机动所需力矩和精确定向期间的精密控制力矩)实现其控制功能。若主控系统某部件失效,可采用备份陀螺组件和备份控制系统及有关
The Space Telescope, which acts as a space shuttle payload, is a free-wheeling aircraft whose directional control system moves the optical axis from one target star region of the celestial sphere to another target star region and then maintains the precise pointing of the target star which enables the telescope to move between 18 90 ° maneuver in minutes or less, both from the space shuttle and from the space shuttle. Directional control systems include command generators, control systems, attitude correction subsystems and momentum management subsystems. The use of precision navigation sensors (used to correct attitude during precise orientation), rate gyro components (used to provide velocity and short-term attitude information during precision orientation and maneuvering), and reaction flywheels (used to provide maneuvering required moments and precise orientation periods The precise control of torque) to achieve its control functions. If the main control system failure of a component, you can use the backup gyro components and backup control system and related