摘要：Well-designed airfoil is very important for high-performance *** 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 *** CRA09-A as the baseline rotor airfoil,the CRA09-B optimized rotor airfoil was designed *** with the foundation of high-precision rotor airfoil stationary test technology,the CRA09-B and CRA09-A rotor airfoils were tested in the S3 MA high-speed wind tunnel of *** order to correct the aerodynamic data,a single parameter linear wall pressure method is used to consider the tunnel *** 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.

摘要：Icing is an important factor threatening aircraft flight *** to the requirements of airworthiness regulations,aircraft icing safety assessment is needed to be carried out based on the ice shapes formed under different icing *** to the complexity of the icing process,the rapid assessment of ice shape remains an important *** this paper,an efficient prediction model of aircraft icing is established based on the deep belief network(DBN)and the stacked auto-encoder(SAE),which are all deep neural *** detailed network structures are designed and then the networks are trained according to the samples obtained by the icing numerical *** that the model is applied on the ice shape evaluation of NACA0012 *** results show that the model can accurately capture the nonlinear behavior of aircraft icing and thus make an excellent ice shape *** model provides an important tool for aircraft icing analysis.