宇宙輸送におけるレジリエンス・エンジニアリング

抄録

It is showed that more safety of the propulsion system is effective for drastic safety improvement of the space transportation system. In order to achieve increasing safety of the propulsion system, it is showed that necessarily of adopt the boundary layer combustion type hybrid rocket which is essentially non-explosive and that it is difficult in the conventional essentially explosive propulsion system. Specifically, it is first showed the importance of the propulsion system to the safety of the space transportation system by hazard analysis. Next, it is summarized the safety measures related to the currently adopted propulsion system, and considered possible countermeasures to further improve its safety. At this time, it is investigated that cases of past accidents and used them as reference for countermeasure consideration. Furthermore, based on the resilience engineering method, countermeasures are evaluated using safety concepts such as Safety-I and Safety-II, and it is showed that the measures of Safety-II are excellent.