| Along with supersonic aircraft has been rapidly developed,the weapon to attack it has been developing very quickly simultaneously,supersonic target is indispensable to theirs developing,check-acceptance and finalizing the design etc.However the target in service was carried out by converting guided missile and is very costly,there is lack of suitable target for supersonic weapon in high altitude for check-acceptance and extensive use,thus how to actualize such a low-cost target will have a great significance.Based on this task,the main tasks include:â… .The characteristics of various targets were analysed,missle target was choosed after primary analysis;according to flight performance of high-altitude supersonic object,it is more economical and practical to convert 300mm caliber rocket missle;tactic-technical specifications was studied out.â…¡.Curves in the picture for computing projectile aerodynamic coefficient were identified by software called WinDIG2.5,aerodynamic procedure of rocket target is compiled in MATLAB/SIMULINK,the aerodynamic force of rocket target is calculated,and a three-degrees-of-freedom trajectory program is compiled based on above prepration.â…¢.Introduce nonlinear parameter optimization methods,include:one dimension search method,unconstrained nonlinear optimization methods and constrained nonlinear optimization method;According to tactic-technical specifications a optimization model of unpowed phase was established,because SQP methods represent the state of the art in nonlinear programming methods,burnout parameter were obtained by optimization in SQP,such as burnout velocity and burnout trajectory tilt angle,powed phase parameter could was obtained subsequently.â…£.Summarize main work and contribution and put forward issues to be resolved further.Experimental results have proved that this simulation result is in line with experimental results,so the optimization can guide experiment to reduce the experimental quantity greatly and to reduce the experimental cost. |
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