上升器解锁装置对起飞稳定性的影响  

Influences of ascender unlock devices on take-off stability

作　　者：胡建国[1] 马大为[1] 朱忠领[1] 赵婕[2] 杨风波[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]甘肃林业职业技术学院,甘肃天水741020

出　　处：《南京理工大学学报》2014年第3期375-379,384,共6页Journal of Nanjing University of Science and Technology

摘　　要：为研究上升器解锁装置在火箭排气作用下的解锁过程和对起飞稳定性的影响,分析了其结构及工作原理。结合锁紧带的材料性能,采用理论研究与数值计算相结合的方法,研究了上升器解锁装置的解锁机理。对上升器解锁时间进行了预估,并研究了不同解锁时间对上升器起飞稳定性的影响。结果表明:上升器解锁过程中,镁带不会燃烧;热、力共同作用是镁带断裂的主要因素;上升器解锁时间为0.3 s时对上升器起飞稳定性影响最小。To study the unlocking processes of ascender unlock devices affected by rocket exhaust and their influences on take-off stability, the structure and working principle are analyzed. The unlocking mechanisms of ascender unlock devices are theoretically studied and numerically calculated considering the material performance of unlock ribbons. The unlock time of ascenders is estimated,and the influences of different unlock time on the take-off stability of ascenders are studied. The results show that magnesium ribbons don＇t burn in the unlock processes of ascenders, and the main factor of magnesium ribbon fracture is the thermal and mechanical interaction,and the minimal influence on the take-off stability of ascenders occurs when the unlock time is 0. 3 s.

关 键 词：航天工程 星球探测 上升器 解锁装置 起飞稳定性 火箭排气 锁紧带 材料 镁带 解锁时间 

分 类 号：V423.6[航空宇航科学与技术—飞行器设计]