Seal Design and Test Verification of Lunar Sample Container

[摘要] One of the key tasks of China's lunar exploration phase three project is to collect lunar sample and return to earth under the condition of unmanned state, and to maintain the original state of the lunar sample, and to ensure the accuracy of the ground data analysis. Reliable sealing of lunar samples is key. This paper designs sealing scheme of lunar sample container, through the iteration test comparison and data analysis, seal structure is optimized, applicable sealing materials are determined. The test verification results show that the leakage rate of lunar sample container is better than that of 5 × 10-9 pa.m3.s-1, and the sealing performance meet index requirements, which can realize high purity seal of lunar sample and prevent contamination of lunar sample.

[发布机构] Lanzhou Institute of Physics, China Academy of Space Technology, Lanzhou, Gansu; 730000, China^1

[效力级别] 无线电电子学

[关键词] High purity;Leakage rates;Lunar samples;Original state;Seal design;Seal structure;Sealing performance;Test verification