Post-launch analysis of the deployment dynamics of a space web sounding rocket experiment

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• 作者：Huina Mao^a ; ^{huina@kth.se" class="auth_mail" title="E-mail the corresponding author} ; Thomas Sinn^b ; ^{thomas.sinn@strath.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; Massimiliano Vasile^b ; ^{massimiliano.vasile@strath.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; Gunnar Tibert^a ; ^{tibert@kth.se" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Space web ; Reaction wheel ; Centrifugal deployment ; Centrifugal stabilization
• 刊名：Acta Astronautica
• 出版年：2016
• 出版时间：October-November 2016
• 年：2016
• 卷：127
• 期：Complete
• 页码：345-358
• 全文大小：4373 K

文摘

Lightweight deployable space webs have been proposed as platforms or frames for a construction of structures in space where centrifugal forces enable deployment and stabilization. The Suaineadh project was aimed to deploy a class="mathmlsrc">title="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0094576515301430&_mathId=si0022.gif&_user=111111111&_pii=S0094576515301430&_rdoc=1&_issn=00945765&md5=40b4b85c8fb8db0d92798f3e32e7283b">class="imgLazyJSB inlineImage" height="11" width="38" alt="View the MathML source" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0094576515301430-si0022.gif">class="mathContainer hidden">class="mathCode">$2\times 2{\mathrm{m}}^2$ space web by centrifugal forces in milli-gravity conditions and act as a test bed for the space web technology. Data from former sounding rocket experiments, ground tests and simulations were used to design the structure, the folding pattern and control parameters. A developed control law and a reaction wheel were used to control the deployment. After ejection from the rocket, the web was deployed but entanglements occurred since the web did not start to deploy at the specified angular velocity. The deployment dynamics was reconstructed from the information recorded in inertial measurement units and cameras. The nonlinear torque of the motor used to drive the reaction wheel was calculated from the results. Simulations show that if the Suaineadh started to deploy at the specified angular velocity, the web would most likely have been deployed and stabilized in space by the motor, reaction wheel and controller used in the experiment.