Rotor airfoil aerodynamic design method and wind tunnel test verification |
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Institution: | 1. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710000, China;2. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;3. Low Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China |
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Abstract: | Well-designed airfoil is very important for high-performance rotor. This paper developed an efficient multi-objective and multi-constraint optimization design system for rotor airfoils based on RANS analysis, and verified the performance of the optimized airfoil. Using CRA09-A as the baseline rotor airfoil, the CRA09-B optimized rotor airfoil was designed successfully. Combined with the foundation of high-precision rotor airfoil stationary test technology, the CRA09-B and CRA09-A rotor airfoils were tested in the S3MA high-speed wind tunnel of ONERA. In order to correct the aerodynamic data, a single parameter linear wall pressure method is used to consider the tunnel effects. The results indicate that multi-objective and multi-constraint optimization design method developed in this study is reliable, and that CRA09-B optimized airfoil provides better stationary performance than CRA09-A airfoil in terms of maximum lift coefficient and lift-to-drag ratio. |
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Keywords: | Airfoil design CRA09 airfoil Optimization method Rotor Wind tunnel test |
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