Japan Aerospace Exploration Agency

Ihi Corporation

Nttto Seimo Co., Ltd.

Nitto Seimo Co., Ltd.

Satomi Kawamoto

Hatsuo Mori

Katsuya Suzuki

Taku Izumiyama

Kozue Hashimoto

Yasushi Ohkawa

Keiichi Hirako

Kentaro Iki

A tether is a net that kinks and is automatically deformed upon tension release. The tether has a length of several kilometers to several tens of kilometers upon deployment and is capable of shrinking to have a length of approximately several tens of meters to several hundreds of meters by kinking and automatically being deformed when the tension is released because of cutting or the like.

Net, tether storing apparatus, and manufacturing method for a net

[Object] To provide an electron source that is lightweight, simple in configuration, and capable of suppressing characteristic degradation or recovering characteristics without causing an increase in power consumption. [Solving Means] A CNT electron source includes: a CNT emitterfor emitting electrons; a gate electrodefor extracting electrons from the CNT emitter; and a gate power supply connection switching relayand a CNT emitter grounding switching relaythat cause the gate electrodeto emit electrons to irradiate the CNT emitter with electrons.

Electron source and electron source unit

A debris removal device includes: an end mass adapted to approach debris to be removed; a debris capture device separably-mounted on the end mass; and a tether connecting the debris capture device and the end mass to each other. The debris capture device includes a harpoon adapted to penetrate into the debris, a shooting device adapted to shoot the harpoon, a guide member positioned to come into contact with the surface of the debris to adjust the shooting angle of the harpoon with respect to the surface of the debris, and a switch that sends the shooting signal to the shooting device. When the harpoon is penetrated into the debris, the end mass is separated from the debris capture device, and the tether is released into outer space.

Debris removal device and debris removal method

Growing community of inventors

Tokyo, Japan

Satomi Kawamoto