Nobumasa Yamaguchi

Tokyo Tech CubeSat: CUTE-I - Design & Development of Flight Model and Future Plan -

Laboratory for Space Systems, Tokyo Institute of Technology finished development of CUTE-I and is waiting for its launch on June 30, 2003. CUTE-I is the first CubeSat of Tokyo Institute of Technology, that is a 10 cm-edge cube-sized satellite of less than 1kg mass. CUTE-I has three missions such as communication, attitude sensing and deployment. to establish a bus component design for pico satellites like the CubeSat. In parallel with the CUTE-I development, we also developed a separation mechanism that is used to separate CUTE-I from the launcher on orbit. In this paper, we describe the design of CUTE-I and the separation mechanism as well as results of environment tests such as long-range communication test, thermal vacuum test, vibration test and separation test. We also mention a Tokyo Tech future plan on our satellite development.

Ground experiment system of reconfigurable robot satellites

Future in-orbit servicing missions will include capturing, inspecting and repairing damaged satellites, constructing large space structures, and supporting EVA (extra vehicular activities) of astronauts. In order to conduct the above missions, we have proposed a system of reconfigurable robot satellite clusters. The system consists of multiple satellites with reconfigurable arms. Utilizing its reconfigurability and mobility, the system can perform the tasks as well as far-site installation of a reconfigurable arm for constructing and inspecting structures. In order to investigate the proposed system, we construct a ground experiment system consisting two configurable arm models, three floating satellite simulators with gas-thrusters and a ground station. One arm is a reconfigurables brachiating space robot, RBR we have developed and the other is a newly developed one that consists of two parts; an arm part of 5 degrees of freedom with two reconfigurable end-effectors and a pivot; a docking part with two degrees of freedom. In the paper, we introduce the experimental system and the reconfigurable arms and show the results of functional and demonstration experiments using the system.