载人航天器电动兼手动舱门的研究

为了适应载人航天出舱活动和交会对接技术的发展,需要研究一种既能在轨保持良好密封性能、又能实现电动兼手动操作的高可靠舱门机构。在分析了载人航天器舱门特点的基础上,提出了一种新型电动兼手动操作的舱门锁紧与开锁机构方案,设计了电动/手动切换机构,借用Pro/E软件对各零件进行三维造型和装配,并通过ADAMS软件进行了舱门机构的运动学仿真。模装与仿真结果表明,该电动兼手动舱门能够实现其预期的运动,无结构干涉,具有操作简单、操作力小、传动效率高的特点。

Study on an Electric/Manual Hatch for the Manned Space Vehicles

In order to meet the requirements of EVA (Extra-Vehicular-Activity)and RVD (RendzVous and Docking) of manned space vehicles, it is necessary to develop a hatch mechanism with high reliability and good seal performance which can be operated by both electromotion and manual. Based on analyses of the hatch characteristics of manned space vehicles, a new design project for the electric latching mechanism of the hatch is put forward. The switch mechanism used to transfer the modes of electric/manual operation is designed, which make the manual mode separate from electromotion. By software Pro/E, the models of hatch mechanism parts are constructed and assembled. Kinematic simulation on the hatch mechanism is carried out with software ADAMS. The simulation results show that the new electric/manual hatch can realize its motion correctly and has the advantage of simple structure, little resistance force and high transmission efficiency.