Precise shape cotnrol of truss structure by artificial thermal expansion

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420819
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: ISHIMURA KOSEI 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (10333626)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 熱膨張 / 形状制御 / ポインティング / トラス

Outline of Final Research Achievements

Precise pointing control was carried out for a long truss structure fixed with main body. The pointing was controlled by the artificial thermal expansion of truss members at the bottom of truss (fixed side). Elastic hinges were introduced to the truss in stead of pin joint because there is no gap in elastic hinges so that hysteresis of the mechanism was expected to be suppressed. We applied the pointing control system to a 4m extensible truss. As a result, the precise pointing accuracy, 1 arcsecRMS, and movable range, 50 arcsec, were confirmed through experiments.

Free Research Field

宇宙構造物