摘要
为解决月球软着陆探测器在软着陆冲击完成到着陆完全稳定过程中的滑移特性问题,研发软着陆机构水平拖曳模型试验装置.该装置有传动控制系统、拖曳筒体的汽缸和限位器装置、量测系统、模型箱系统等,用于模拟软着陆过程中不同着陆速率、足垫冲击角度以及不同着陆地点下,软着陆机构水平滑移特性测试.由传动控制系统实现设定的水平拖曳速率;拖曳筒体的汽缸和限位器装置实现压力和刺入深度,量测系统对拖曳力、轴力、拖曳速率、刺入深度为和足垫转角进行测量,模型箱系统可配制任意要求的试验基床.开展了足垫水平、刺入深度10mm的系列试验,结果表明:拖曳力与轴力呈现线性关系,两者分布与美国国家航空航天局(NASA)试验结果相似,试验装置性能可靠.
Horizontal sliding model tests for soft landing mechanisms were conducted to measure the slip characteristic for lunar lander after landing impact occurring in touchdown process.The model test facility,formed by transmission control system,towing cylinder and limiting displacement system,measuring system,model box system,was used to research the slip characteristic under different landing velocities,footpad angles and landing points.The drive control system achieves any requirement horizontal sliding velocity;the cylinder and displacement restrictor system realizes the requirement pressure and depth;measuring system measures the sliding force,axial force,sliding velocity,displacement and footpad angle;and model box system compoundes the requirement test foundation bed.A series of tests were carried out under footpad level,depth 10 mm.The results show that linear relationship between sliding force and axial force is excellent,and their distribution is similar to National Aeronautics and Space Administration（NASA） results.So the horizontal sliding model tests device is reliable.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2013年第3期465-471,共7页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(51278451)
浙江省自然科学基金资助项目(LZ12E09001)
关键词
软着陆
模拟月壤
模型试验
水平拖曳
量测系统
soft landing
lunar soil simulant
model test
horizontal sliding
measuring system
