空间对接试验台转动模拟装置的试验研究

针对空间对接试验台中二维转动实现的设计难点问题,提出了非常规应用的新型抗弯件及十字轴机械结构方案。使整个系统在大负载和高撞击力的特殊情况下,结构具有高可靠性;大大降低了转动摩擦力矩,使转动模拟装置具有良好的随动运动特性;结构尺寸紧凑,减小了与结构尺寸关系密切的航天器惯量模拟误差;质量轻,使试验台其余子系统的设计有一定余量。采用缩比方法研制了试验装置。试验结果表明,主动转动模拟装置的最大静摩擦力矩仅为8.8445Nm,远小于80 Nm的指标要求。所设计的转动模拟装置能够满足对接试验台总体和其它分系统的要求。

Experimental Study on Rotating Simulator of the Spacecraft Docking Test Table

Building on the main design problems to realize the two freedom rotating of space docking test table, the paper put forward a new unconventional mechanical structure with resisting bend part and cross axis. So in the special situation of heavy load and high impact, the structure is high reliable. The friction torque could be reduced greatly, hence the test table had good passive movement characteristics. The structure dimension is compact, so the error of the spacecraft inertia, which has close relation with structure dimension, can be decreased. The structure mass is light, so it can leave enough design space to other subsystems of the docking test system. An experimental equipment designed by the scale-|down method. The experimental results show that the maximal friction torque is only 8.8445Nm, which is small in relation to the 80 Nm torque produced by the spacecrafts in space. The experimental results show that the design scheme can meet a demand for the docking test tables and other subsystems.