航天器舱门零重力环境模拟卸载系统设计分析

Design and Analysis of Zero-Gravity Environment Simulation Unloading System for Spacecraft Hatch-Door

卸载系统是舱门展开试验装备的重要组成部分,重点对展开试验卸载系统进行设计与分析研究。鉴于空间舱门运行轨迹复杂,采用二维滑轨吊挂方法适应曲线展开轨迹。针对质量大、易导致支撑部件变形以及卸载困难,采用多点长距离支撑均匀分散受力。设计柔性自适应弹性吊挂,对运行过程波动进行有效缓冲,避免刚性碰撞。采用高精度数显可读式拉力传感监测系统,实现展开过程拉力在线检测。针对高卸载效率要求,采用二维可调式转接组件适应多状态舱门调平,最后实现卸载率96.31%以上。结果表明,舱门零重力环境模拟卸载系统设计方法可行,分析过程合理,满足工程应用需求。

The unloading system is an important part of deployment test equipment for the hatch-door.The emphasis is on the design and analysis of the unloading system for the launch test.Based on the complex trajectory of the space hatch-door,the two-dimensional sliding-rail suspension method is adapted to meet the needs of curve deployment.In view of the large weight,easy causing deformation of supporting parts and the difficulty of unloading,multi-point long-distance support is adapted to disperse the force uniformly.The flexible and elastic self-adaption suspension design is adapted to effectively buffer the fluctuation of operation process,and avoid rigid collision.In order to ensure the digital real-time monitoring of the hatch deployment process,a high-precision digital readable tension system of sensor monitoring is used to realize on-line tension detection during the deployment process.In order to meet the requirement of high unloading efficiency,the two-dimensional adjustable transfer module is used to adjust the multi-state hatch-door.Finally,the unloading rate is more than 96.31%.The results show that the design method of zero-gravity environment simulation unloading system for hatch-door is feasible and the analysis process is reasonable,which meets the engineering application requirements.