| Citation: | HU Bao, GAO Yongwei, WEI Binbin. Propeller design rule extraction based on rough set theory[J]. Journal of Aerospace Power, 2023, 38（8）：1901-1908 doi: 10.13224/j.cnki.jasp.20210645
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Different from the traditional method of obtaining design rules by experts through theoretical derivation or experience, a data-driven propeller design rule extraction method was proposed. The rough set theory was used to analyze a large number of scheme data generated in the process of propeller optimization design. An appropriate attribute representation method and an attribute discrete method were developed. Result showed that, in the study of two types of propeller models with different parameters, the design rule that the smaller the difference of the induced velocity of each section of the propeller, the higher the propeller efficiency was extracted. This rule was equivalent to the Betz condition, which verified the effectiveness of the method. The data-driven propeller design rule extraction method can provide technical support for the subsequent discovery of three dimensional design rules and optimal design research. This idea can also be used as a reference for other design fields.
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