The research of rapid decompression with its effect assessment and protection technology is the problem that must be faced by the future exploration projects such as near space exploration, deep space exploration, and long-term lunar or Mars base. A new reusable quick opening mechanism which can be opened in millisecond is designed to meet the testing requirement of ground simulator for extremely rapid decompression, and the testing results show that the quick opening mechanism can be opened within 0.1 s. The mathematical formulation is also developed, and the comparisons with the results from the literature demonstrate its validity. The CFD simulation and the verification system are established for the airflow in the rapid decompression process under different opening degrees. The simulation results show that the effect of the opening on the decompression process is very obvious and the decompression time corresponding to 50%, 75%, and 100% opening is 479.1 ms, 320.7 ms, and 290.1 ms, respectively. The testing results also show a consistent trend which is 583 ms, 450 ms, and 384 ms, respectively, to reach the equilibrium state.

中文翻译：

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毫秒级空间极速减压模拟关键技术的研究与验证

利用其效果评估和保护技术对快速减压进行研究是近空间探索，深空探索以及长期月球或火星基地等未来探索项目所必须面对的问题。设计了一种新型的可在毫秒内打开的可重复使用的快速打开机构，以满足地面模拟器对极快减压的测试要求，测试结果表明该快速打开机构可以在0.1 s内打开。还开发了数学公式，并将其与文献结果进行比较证明了其有效性。建立了不同开度下快速减压过程中气流的CFD模拟和验证系统。仿真结果表明，开启对减压过程的影响非常明显，分别对应于开启50％，开启75％和开启100％的减压时间分别为479.1 ms，320.7 ms和290.1 ms。测试结果还显示出达到平衡状态的一致趋势，分别为583 ms，450 ms和384 ms。