Design and experimental research of a shape memory alloy space release device with segmented nut form

被引：0
|
作者：
Zhang X. [1 ]
Yan X. [1 ]
Yang Q. [2 ]
机构：
[1] School of Jet Propulsion, Beihang University
[2] Beijing Institute of Spacecraft System Engineering
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2010年 / 46卷 / 17期
关键词：
Constitutive relation; Segmented nut; Shape memory alloys; Smart structures; Space release device;
D O I：
10.3901/JME.2010.17.145
中图分类号：
学科分类号：
摘要：
Spacecrafts need release devices to realize space release function. The traditional pyrotechnic release devices have the drawbacks of high shock and contamination. NASA-developed release device with shape memory alloy (SMA) column has the disadvantages of long release lasting time and unavailability of reset. Based on the research of NASA, a design scheme of SMA space release device with segmented nut form is proposed, and the corresponding design method is developed for the core part of the release device, i.e. driving unit. Finally, the prototype is developed and the function and synchrony tests are carried out. The results show that under 6V DC power supply, the device can finish release function within 0.3 s, and when two devices are used, they are almost release at the same time. The difference of release lasting time for two devices is less than 0.04 s. The space release device developed has the advantages of small size, short release lasting time, easy reset and synchronization, thus having great potential in engineering application. © 2010 Journal of Mechanical Engineering.
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页码：145 / 150
页数：5
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