Approximated Completion Conditions of Kinematic Couplings for Precise Deployable Structures
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- ISHIMURA Kosei
- Department of Modern Mechanical Engineering, Waseda University
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- TANAKA Hiroaki
- Department of Aerospace Engineering, National Defense Academy
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- OGI Yoshiro
- Oxford Space Systems
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- OGAWA Yuki
- Course of Mechanical Engineering, Graduate School of Engineering, Tokai University
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- TSUNODA Hiroaki
- Department of Aeronautics and Astronautics, Tokai University
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- SATO Yasutaka
- Institute of Space and Astronautical Science, JAXA
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- MAEDA Osamu
- Nippi Corporation
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- ABE Kazuhiro
- Nippi Corporation
抄録
<p>In this paper, the completion conditions for a latch mechanism with a kinematic coupling, which consists of three v-groove/sphere pairs (Maxwell type), are approximately derived as a relationship between the slope angle of v-grooves and friction coefficient. The kinematic coupling is an economical and suitable method for attaining high repeatability in fixtures. Therefore, the kinematic coupling is used in various types of deployable space structures, such as the James Webb Space Telescope and the extensible optical bench of ASTRO-H (Hitomi). In previous studies, numerical simulations were carried out to determine the amount of additional force that should be applied to complete the latch from the incomplete state. However, it is difficult to use such numerical solutions as general design criteria. In this paper, approximated completion conditions are described using analytic functions. As a result, the derived completion conditions are intuitively clear and usable as design guidelines. The most severe condition, where two v-groove/sphere pairs are latched and only one pair remains unlatched, is clarified. It is shown that there are an optimum slope angle and upper limit of the friction coefficient for latch completion. Finally, the most severe completion condition is verified through experiments.</p>
収録刊行物
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- TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN
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TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 18 (6), 369-374, 2020
一般社団法人 日本航空宇宙学会
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詳細情報 詳細情報について
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- CRID
- 1390567901494879744
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- NII論文ID
- 130007935951
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- ISSN
- 18840485
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可