Radome fluid-structure coupling analysis and predeformation optimisation

In this study, the fluid-solid coupling analysis and the pre-deformation optimisation design method of the radome are proposed for the structural deformation of the thin-shell radome under aerodynamic loading. The flow field and structural deformation of the radome are analysed by the fluid-solid coupling analysis. Based on the simulation results, the pre-deformation optimisation method is used to modify the radome shape to compensate for the deformation caused by the aerodynamic load. The optimal pre-deformation parameters are obtained through continuous iteration so that the geometry of the final radome after elastic deformation under the aerodynamic load of the rated working condition is consistent with the geometry of the initial design. The results show that the optimised radome effectively reduces the total radome deformation while maintaining the aerodynamic performance. This study provides an effective fluidstructure coupling analysis and optimisation idea for radome design, which is applicable to the structural design of radomes in the aerospace field.