日本间组公司估计在空间站时代到来之际,必定会出现增加运送人员和物资的搭载量,使宇宙空间往来变得频繁起来。为此,间组公司议定了利用压缩空气从地下2000米发射火箭这一发射基地的构思,这样,火箭的小型化和搭载量便成为重要课题。这一构思主要点是在地下挖一个2000米深,直径为10米的竖坑,从它的底部发射火箭。过去为了保密起见有从地下发射导弹的先例,但要 Japanese group companies estimate that as the space station era arrives, there will surely be an increase in the carrying capacity of personnel and supplies so that the exchange of space in the universe will become frequent. For this reason, the Inter-company agreed on the idea of ​​using compressed air to launch a rocket as a launching pad at a depth of 2,000 meters underground, so that the miniaturization and carrying capacity of the rocket became an important issue. The main point of this idea is to dig a subsurface of 2,000 meters deep and 10 meters in diameter to launch a rocket from its bottom. In the past, there was a precedent for secrecy, but it was necessary to launch missiles from the ground