Current activities for future reusable space transportation systems at MHI

Paper number

IAC-05-D2.4.02

Author

Mr. Koji Shimura, Mitsubishi Heavy Industries, Ltd., Japan

Coauthor

Mr. Takeshi Mori, Mitsubishi Heavy Industries, Ltd., Japan

Coauthor

Mr. Toshimasa Ochiai, Mitsubishi Heavy Industries, Ltd., Japan

Coauthor

Mr. Hiroaki Matsumoto, Mitsubishi Heavy Industries, Ltd., Japan

Coauthor

Mr. Kiyoshi Suzuki, Mitsubishi Heavy Industries, Ltd., Japan

Year

2005

Abstract

This paper describes MHI’s future plan and current activities for the development of reusable space transportation systems.

Reusable space transportation systems are expected to promote space activities due to its cost performance and high reliability in their operation. However, it is currently difficult to develop a reusable system because of its high development cost.

MHI considers to take a step-by-step approach to cost effectively develop reusable systems even under current severe budget constraint because a step-by-step approach could avoid cost overrun due to risks in case of developing final configuration at once. Also at each step of the development, MHI considers to develop new applications in space environment in addition to obtaining fundamental technologies. These applications could draw further demand.

The major challenges for reusable systems are 1) reentry technology and 2) safety and efficient operation both on ground and in flight.

As for reentry, a small capsule is considered both for technology demonstration and easy-to-use micro-gravity experimental infrastructure. MHI has been conducting some concept studies for capsule-type vehicles using existing transportation systems such as piggyback on H-IIA and HTV. One candidate mission is biomedical experiment to provide knowledge about influences of space environment to animals and humans, and to advance technologies, e.g. environment control and life support.

On the other hand, MHI would obtain key technologies related to safety and efficient operation through a prototype reusable rocket. Our first target of its flight campaign is to demonstrate extremely short turnaround time and abort capability against major malfunctions such as engine failure. 

Both technologies will also contribute to future human transportation that is one of promising mission in the field of space business.

Abstract document

IAC-05-D2.4.02.pdf

Manuscript document

IAC-05-D2.4.02.pdf (🔒 authorized access only).

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