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- W2896978130 abstract "The spacecraft is becoming bigger and bigger. This development trend brings us a strict challenge for the leak detection of spacecrafts, especially for the total leakage rate leak detection. So it is important to study the total leakage rate leak detection technology of the large spacecraft. In this paper, an idea on large flexible accumulation chamber was provided to overcome this strict challenge. But at the same time it also brings two key problems to be solved. That is how to build the large flexible accumulation chamber for accommodating the large spacecraft and whether the mixed helium gas concentration on the height direction in this flexible accumulation chamber is uniform because helium is lighter than air. The feasibility on building the large flexible accumulation chamber for the total leakage rate leak detection of the large spacecraft was firstly analyzed. Secondly, the mixed helium gas distributing rules on the height direction in the large accumulation chamber was also given from the theoretic analysis. Finally, a large flexible accumulation chamber was built for the total leakage rate leak detection of the large spacecraft and the six times repeatability tests were also finished. The results here indicated that the six times repeatability tests owned a well consistency and the large flexible accumulation chamber was suitable for the total leakage rate leak detection of the large spacecraft." @default.
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- W2896978130 date "2018-09-01" @default.
- W2896978130 modified "2023-09-22" @default.
- W2896978130 title "Research on the total leakage rate leak detection technology of the large spacecraft" @default.
- W2896978130 doi "https://doi.org/10.1088/1742-6596/1074/1/012031" @default.
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