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Development of a lightweight space debris shield using high strength fibers |
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| Authors: | Makoto Tanaka Yoko Moritaka Yasuhiro Akahoshi Ryuta Nakamura Akira Yamori Susumu Sasaki |
| Affiliation: | a Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan b Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan c The Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan |
| Abstract: | In order to protect space structure against space debris impacts, it is indispensable to develop a shield with high strength materials. A high strength fiber is one of potential materials from a viewpoint of strength, lightweight, and flexibility. The purpose of this study was to develop a new lightweight shield composed of high strength fibers against medium size debris impacts. We developed four kinds of shields using Vectran fibers, and hypervelocity impact tests were carried out by a railgun accelerator. The experimental results showed that the developed shield could stop the polycarbonate projectile with 13 mm in diameter, 1 gram in weight, and 6.9 km/sec in velocity. Adoption of the high strength fiber in the bumper materials may reinforce the protection capability and reduce the weight drastically. |
| Keywords: | space debris shield bumper material high strength fiber Vectran Kevlar railgun |
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