Takumi Abe

Space Demonstration of Bare Electrodynamic Tape-Tether Technology on the Sounding Rocket S520-25

A spaceflight validation of bare electro dynamic tape tether technology was conducted. A S520-25 sounding rocket was launched successfully at 05:00am on 31 August 2010 and nsuccessfully deployed 132.6m of tape tether over 120 seconds in a ballistic flight. The electrodynamic performance of the bare tape tether employed as an atmospheric probe was measured. Flight results are introduced through the present progressive report of the ndemonstration and the results of flight experiment are examined as the premier report of the international cooperation between Japan, Europe, USA and Australia. Future plans for maturing space tether technology, which will play an important role for future space activities, are also discussed.

The Transparent Wave Absorber Using Resistive Film

We have succeeded to manufacture the transparent wave absorber consisting of spacer and two transparent resistive sheet for V-band frequency. Measured frequency characteristics of the reflection loss indicate that a peak absorption of 35-38dB is attained at a target frequency of 60GHz.