小型ロケット上段部のデブリ化防止に向けたpmd 装置の開発と宇宙実証

In recent year, with the expansion of space utilization worldwide, the number of launches of communication satellites and earth observation satellites has increased, and the number of satellites in orbit has increased at an explosive rate. As a result, the amount of space debris continues to increase, and the risk of collisions between objects such as artificial satellites and space debris also continues to rise. It is said that after such a collision risk increases to a certain level, a phenomenon called chain collision (Kessler syndrome) will occur, in which colliding fragments spread and lead to a drastic increase in the probability of further collisions. Since it is expected that rocket launches in the future will become difficult, this is a major issue for sustainable space development and utilization. BULL Co., ltd. is therefore taking measures to prevent the increase of space debris in the future, and is developing a PMD device to prevent the small rockets upper stage turning into space debris. We are currently in the EM development phase, and aim to demonstrate it in space after 2025. In this presentation, we will report on the overview of the PMD device under development and future plans.