Advantage of oblique collision for debris protector

Ichiro Shiota, Hitoshi Kohri, Atsushi Yumoto, Masahiko Kato, Koji Tanaka, Susumu Sasaki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Space solar power system (SSPS) is expected as one of future sustainable energy sources. Collision of debris with SSPS in space is a matter of concern. The debris fl ies at a speed of more than 7000 m/s and the kinetic energy of the debris is enormous. Then the SSPS will be easily destroyed even if a small debris collides with it. In a former paper, we discussed possibility to construct a thin and light weight CFRP protector by oblique collision. In the former experiment, the CFRP panel was 3 mm in thickness and was cross-laminated unidirectionally aligned carbon fi ber sheets. The collision angle was less than 30 degree. In this experiment, a CFRP panel with laminated plain-weave carbon fi ber sheets was used. The thickness was also 3 mm. As the result, the projectile did not penetrate the CFRP panel at a collision angle of less than 60 degree. Moreover, the projectile did not rebound but slid along the panel surface at the smaller collision angle than 60 degree. From these results, a prospect to construct a thin and lightweight protective panel was obtained. A novel shape of a protector based on oblique collision is proposed.

Original languageEnglish
Pages (from-to)87-96
Number of pages10
JournalNanomaterials and Energy
Issue number2
Publication statusPublished - 2012 Mar


  • CFRP
  • Debris
  • Oblique collision
  • SSPS

ASJC Scopus subject areas

  • Materials Science(all)
  • Energy (miscellaneous)


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