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运载器着陆支架收放系统的性能对运载器的安全着陆和回收利用起着决定性作用。以星球着陆器软着陆机构为参考,设计了一种基于气体驱动的腿式着陆支架及其气压驱动系统。运用LMS Imagine.Lab AMESim软件和ADAMS软件对着陆支架气压控制系统和动力学系统进行联合仿真,模拟着陆支架的展开和收起,利用仿真结果研究了运载器着陆支架收放时的动态性能,并计算得到了运载器所携带的高压气瓶的最小容量。仿真分析结果表明,伸展机构的机械结构能够在气动力作用下伸展和收缩,着陆支架满足收放功能要求,其展开时间也能满足使用要求。
The performance of the carrier landing support retractable system plays a decisive role in the safe landing and recycling of the carrier. Based on the planetary lander soft landing mechanism, a gas driven leg landing bracket and its pneumatic drive system are designed. The LMS Imagine.Lab AMESim software and ADAMS software are used to simulate the landing support pressure control system and dynamic system to simulate the deployment and retraction of the landing support. The simulation results are used to study the dynamic performance of the landing support The minimum capacity of the high pressure gas cylinder carried by the carrier is calculated. The simulation results show that the mechanical structure of the extension mechanism can expand and contract under the aerodynamic force, and the landing bracket can meet the requirements of the retractable and retractable functions, and the deployment time can meet the requirements of use.