t-1-s Systems Engineering and Information Technology Student
Session Date : June 10 (Fri) 8:30-9:10 Room : B7

2011-t-02s The Concept of 'Easily Serviceable Satellite System' and Its Design Optimization
Jiyeon Kim (University of Tokyo, Japan)
On-orbit servicing is to send a servicer satellite along with the replacement component modules to the target satellite and get it fixed. Yet, this idea hasn't been widely applied not due to the limitation of cutting-edge technologies but rather due to the lack of compatibility. On-orbit service should be more cost-effective compared to launching a clone, but since most satellites have a unique design which best suit their specific mission, the servicer may not access the malfunctioning components or even worse, the components aren't replaceable. It is essential to have a universal design for an efficient maintenance service, yet has not been considered concretely. This research aims to propose a design rule for the 'Easily serviceable satellite' in order to construct an essential infrastructure for on-orbit servicing. This research starts from optimizing the rearrangement of subsystems for easier service while maintaining their unique characteristics and requirements for missions. As these optimally rearranged subsystems are grouped or integrated to several service modules, and then, each design of the target and the servicer can be launched based on these service modules. The design rule defined through these processes is expected to be used as an infrastructure for the serviceable satellite system design.

2011-t-02s
The Concept of 'Easily Serviceable Satellite System' and Its Design Optimization

Jiyeon Kim
(University of Tokyo, Japan)

On-orbit servicing is to send a servicer satellite along with the replacement component modules to the target satellite and get it fixed. Yet, this idea hasn't been widely applied not due to the limitation of cutting-edge technologies but rather due to the lack of compatibility. On-orbit service should be more cost-effective compared to launching a clone, but since most satellites have a unique design which best suit their specific mission, the servicer may not access the malfunctioning components or even worse, the components aren't replaceable. It is essential to have a universal design for an efficient maintenance service, yet has not been considered concretely. This research aims to propose a design rule for the 'Easily serviceable satellite' in order to construct an essential infrastructure for on-orbit servicing. This research starts from optimizing the rearrangement of subsystems for easier service while maintaining their unique characteristics and requirements for missions. As these optimally rearranged subsystems are grouped or integrated to several service modules, and then, each design of the target and the servicer can be launched based on these service modules. The design rule defined through these processes is expected to be used as an infrastructure for the serviceable satellite system design.

2011-t-03s System Development of an Experimental Rocket and an Autonomous Mobile Quasi-satellite
Yuito Mori (University of Gifu, Japan)
This paper presents the development of a small experimental rocket for the National Launching Campaign held by the DGAEM in France since 2009, conducted by the French Association of Planete Sciences, and organized by CNES. The newest rocket design is developed by Space Club Gifu and Sasaki Lab at Gifu University. The main mission is the autonomous navigation of a quasi-satellite maneuvering with a parachute and two propellers to a target point using GPS data. The rocket is 2 m long, 150 mm in diameter, weights 11.4 kg and made entirely of CFRP. With a solid rocket motor provided by CNES, the rocket can reach an altitude of 840 m. Onboard are a pressure sensor, accelerometer, GPS and two video cameras. The video cameras begin monitoring at launch. The acceleration, velocity and position are recorded for later comparison to simulation data. While the rocket launch and quasi-satellite deployment were successful, strong winds prevented the latter from maneuvering to the target point. All components were recovered intact and all recorded data was available for analysis.

2011-t-03s
System Development of an Experimental Rocket and an Autonomous Mobile Quasi-satellite

Yuito Mori
(University of Gifu, Japan)

This paper presents the development of a small experimental rocket for the National Launching Campaign held by the DGAEM in France since 2009, conducted by the French Association of Planete Sciences, and organized by CNES. The newest rocket design is developed by Space Club Gifu and Sasaki Lab at Gifu University. The main mission is the autonomous navigation of a quasi-satellite maneuvering with a parachute and two propellers to a target point using GPS data. The rocket is 2 m long, 150 mm in diameter, weights 11.4 kg and made entirely of CFRP. With a solid rocket motor provided by CNES, the rocket can reach an altitude of 840 m. Onboard are a pressure sensor, accelerometer, GPS and two video cameras. The video cameras begin monitoring at launch. The acceleration, velocity and position are recorded for later comparison to simulation data. While the rocket launch and quasi-satellite deployment were successful, strong winds prevented the latter from maneuvering to the target point. All components were recovered intact and all recorded data was available for analysis.