| Citation: | SHAO Lei, PENG Yang, ZHANG Chao, et al. Research on nitrogen-enrich air optimal distribution mode based on entropy-weight improvement TOPSIS method[J]. Journal of Aerospace Power, 2024, 39（3）：20210486 doi: 10.13224/j.cnki.jasp.20210486
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The nitrogen-rich air distribution method was studied by using statistical theory, the Entropy-weight improvement technique for order preference by similarity to an ideal solution (TOPSIS) method was applied to establish a comprehensive evaluation method of oxygen concentration decrease rate and uniformity. On this basis, five typical inerting schemes were designed for the wing multi-compartment fuel tank of a transport aircraft. Through numerical simulation method, the above schemes were modeled and calculated, the characteristic indexes of multi-compartment fuel tank were obtained, and the established comprehensive evaluation method was used to evaluate each scheme. The results showed that: (1) the entropy-weight improvement TOPSIS method can effectively evaluate the fuel tank inerting performance and realize the determination of the optimal nitrogen-rich air distribution mode; (2) the semi-uniform inlet distribution mode of nitrogen-rich air was the best when considering the characteristics of oxygen concentration decrease rate and uniformity; (3) when the oxygen concentration decrease rate was taken as the only evaluation index, the non-uniform inlet distribution mode of nitrogen-rich air was the best; when the oxygen concentration uniformity was the only evaluation index, the semi-uniform inlet distribution mode of nitrogen-rich air intake was the best.
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