Novel Debris Protector for Artificial Satellite by Oblique Collision

Fossil fuel energy is essential for our modern lives.Recently, environmental problems caused by the fuel are critical.Space solar power system (SSPS) is expected as one of futuresustainable energy sources. SSPS will consist of large-size solarpanels and equipment to transmit the electric power to the earth.Collision of debris with SSPS in space is a matter of concern. Inour former paper, we reported a prospect to construct a thin andlight weight CFRP protector by oblique collision. In the formerexperiment, two panels were placed parallel and a nylon 66projectile was collided with the CFRP panels at a speed of 5 km/s.The projectile did not penetrate the first CFRP panel and slidalong the surface of it when the collision angle was less than 60degree. In this paper, damage on the second CFRP panel with anoblique angle to the first panel, was precisely investigated. Aprojectile of nylon-66 or aluminum was collided with the panels ata speed of 6 km/s. The projectile did not penetrate the secondpanel even though the first panel was seriously damaged. Fromthese results, we obtained a prospect to construct a thin andlightweight protective panel