Improvement of Deployment Reliability and Stiffness for Space Membrane Considering on Initial Deformation

2022 Fiscal Year Final Research Report

• Project/Area Number: 18K13929
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 24010:Aerospace engineering-related
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: Satou Yasutaka 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 (70726760)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Keywords: 宇宙用展開膜 / 折り目 / 太陽電池アレイ

Outline of Final Research Achievements

The purpose of this study is to realize high reliability of deployment and high stiffness after deployment by taking into account and utilizing the initial deformation such as creasing and curvature of membrane devices, which affect the deployment behavior and tensile shape. For this purpose, mechanical modeling of the creasing and membrane devices, deployment analysis considering them, and deployment experiments using the experimental model were conducted to understand the phenomena and to develop the design procedure.

Free Research Field

宇宙構造物工学

Academic Significance and Societal Importance of the Research Achievements

宇宙構造の打ち上げコストの大幅削減に必要不可欠となる膜面構造物に関して、展開と展張挙動に影響を与える折り癖や膜面デバイスの変形の力学モデルの構築と展開形状の高精度予測を実現することができた。これにより、展開の信頼性向上と展張後の高剛性化を実現でき、膜面構造物の発展に寄与できる。