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浙江大学学报(工学版)
交通与土木工程     
新型热刀式锁紧释放装置设计与试验
曹长明, 关富玲, 黄河, 朱术华
浙江大学 空间结构研究中心,浙江 杭州 310058
Design and test of new thermal knife restraint and release device
CAO Chang ming, GUAN Fu ling, HUANG He, ZHU Shu hua
Space Structure Research Center, Zhejiang University, Hangzhou 310058, China
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摘要:

为确保小型航天器预应力可展开结构的锁紧释放可靠,设计一种新型的热刀式锁紧释放装置.介绍装置的基本原理及构造,改进热刀电热元件的设计,对热刀装置进行热仿真分析与电热性能测试.通过锁紧捆绳的参数对比与试验,选择Dyneema绳并说明捆绳蠕变控制方案.设计试验研究捆绳预紧力与收拢锁定状态结构基频及平均熔断时间的关系并确定捆绳预紧力的准确值,提出标准化的预紧力施加装置及施加方案.在各种工况下进行解锁功能试验,均可顺利解锁可展开结构,验证装置的可行性.

Abstract:

A new type of the thermal knife restraint and release system was developed in order to guarantee the reliability of the prestressed deployable structure of the locking and unlocking for the micro space vehicle. The theory and composition of this device was introduced and the electronic thermal element was improved. Thermal simulation analysis and electric performance test of this device was carried out. On the basis of the contrast tests of the cord parameters, a kind of Dyneema cord was selected and its creep control was stated. The tests were conducted to study the relationship between cord pretension, average locking operation time and structural natural frequency in folded locking state. Then the exact value of this pretension was determined. A standardization device and proceeding program was developed to process the pretension on the cord. The unlocking function test was employed in all kinds of conditions. Results indicate that deployable structure can be succesfully unlocked, thus the feasiblity of the device is verified.

出版日期: 2016-12-08
:  TU 323.4  
基金资助:

国家 “863”高技术研究发展计划资助项目(128205-E31403).

通讯作者: 关富玲,女,教授,博导.     E-mail: ciegfl@zju.edu.cn
作者简介: 曹长明(1987—),男,硕士,从事空间可展开结构的研究与分析. E-mail:21312148@zju.edu.cn
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引用本文:

曹长明, 关富玲, 黄河, 朱术华. 新型热刀式锁紧释放装置设计与试验[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.12.015.

CAO Chang ming, GUAN Fu ling, HUANG He, ZHU Shu hua. Design and test of new thermal knife restraint and release device. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.12.015.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.12.015        http://www.zjujournals.com/eng/CN/Y2016/V50/I12/2350

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