现有２５个国家参加并执行《导弹技术控制制度》（ＭＴＣＲ，下面简称为《导弹制度》）。该《导弹制度》规定不得向非执行国家出口有关导弹的技术。巴西未参加《导弹制度》，因此，在发展本国的空间技术过程中，特别是发展本国的运载火箭技术中，一直遭到同在西半球的空间大国? The existing 25 countries have participated in and implemented the “Missile Technology Control System” (MTCR, hereinafter referred to as the “missile system”). The “missile system” stipulates that it is not allowed to export missile-related technologies to non-executive countries. Brazil did not participate in the “missile system”. Therefore, in the process of developing its own space technology, especially in the development of its own launch vehicle technology, it has been met with space power in the Western Hemisphere.