JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleThe spinoff of space energy transmission for the application on the ground
Author(jpn)武田 和也; 河島 信樹
Author(eng)Takeda, Kazuya; Kawashima, Nobuki
Author Affiliation(jpn)近畿大学; 近畿大学 大学院総合理工学研究科
Author Affiliation(eng)Kinki University; Kinki University Interdisciplinary Graduate School of Science and Technology
Issue Date2005-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第24回宇宙エネルギーシンポジウム 平成16年度
The Twenty-fourth Space Energy Symposium March 7, 2005
Start page130
End page134
Publication date2005-06
AbstractWe have tested 1.2 km laser energy transmission for a full-size model of a lunar rover at the year before last. Now we are going to develop the laser energy transmission system for the rescue robot and the model of airplane. The rescue robot has a solar panel (47 pieces of single junction GaAs solar cells) and receive the laser light. We use a fiber-coupled type diode laser (lambda: 806.1 nm, output power: 200 W/cw, core diameter: 400 micrometer, NA: 0.22). The focused spot size of the laser beam is about 44 cm diameter on the solar panel. The output power of the solar panel is about 47-50 W (laser output power: 200 W). The distance of the laser system to the robot is 10 m. The corner reflector, LCD, Photodiode and Polarizer are used in the laser tracking system. So it is possible to receive the laser light by the laser tracking system when the robot moving. The model of airplane (kite-plane) has a smaller solar panel than the rescue robot, 32 pieces of single junction GaAs solar cells are mounted on a 30 cm diameter panel (conversion efficiency: approximately 25 percent). It is used the same type of the laser system that the robot system using. The flight altitude is 50-500 m, and the circular flight radius is about 10 m. The kite-plane is tracked by the laser tracking system and receive laser beam. This tracking system is using a 4-element photodiode and a corner reflector. We are providing the demonstration of the laser energy transmission for the rescue robot and the kite-plane.
Keywordsspinoff; technology transfer; laser power beaming; laser energy transmission; robot arm; rescue robot; disaster; semiconductor laser; automatic tracking system; solar cell; スピンオフ; 技術移転; レーザパワービーミング; レーザエネルギー伝送; ロボットアーム; レスキューロボット; 災害; 半導体レーザ; 自動追尾システム; 太陽電池
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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