Multidisciplinary Design Optimization Of Gliding Extension And Control Component Of Guided Bombs

Glide guided bomb effectively increases glide distance by adding gliding extension and control components on the basis of ordinary guided bomb.In the traditional component design,the main wing and tail wing are usually used,which are greatly constrained by the size of the carrier magazine.In this paper,the glide guided bomb is taken as the research object,and a new tailless component design scheme is proposed.Considering the characteristics of aerodynamics,trajectory,control and stability,a multidisciplinary optimization platform based on the improved collaborative optimization method is constructed.The main work is as follows:(1)Based on the multidisciplinary design optimization method,a new type of tailless gliding extension and control components design scheme is proposed.According to the requirements of technical and tactical indexes,the subjects involved in optimization are determined and the coupling relationship among them is analyzed,and the collaborative optimization method is improved.(2)Based on the idea of parametric modeling,a rapid analysis system of aerodynamic performance of guided bomb is built.Based on CATIA,the aerodynamic layout of the extended range and control components of the tailless glider is modeled rapidly.CFD and Datcom are used to analyze the aerodynamic performance.(3)The motion model of guided bomb is established,and the control and stability characteristics are analyzed.Based on linearized model,the static stability analysis and dynamic characteristic analysis are carried out.The maneuverability of multiple control surfaces is analyzed based on attainable moments set.(4)Based on the separation of control law and multi control surface assignment law,a glide performance analysis system of guided bomb is constructed.The design of proportional guidance law and the analysis of glide performance are carried out.The coordinated BTT control law,and the multi control surface assignment law based on pseudo inverse algorithm and differential evolution algorithm are carried out,which improves the stability in yaw direction.(5)Considering the characteristics of aerodynamics,trajectory,control and stability,a multi-disciplinary optimization platform for tailless gliding extension and control components is built based on ISIGHT,which greatly improves the design automation level and the overall performance of guided bombs.