Investigation On Multidisciplinary Design Optimization Technologies For Medium-Long Range Surface-to-Air Missile

The medium-long range surface-to-air missile is attracting more attention now.Because it can realize stand off air defense,which means a lot to the construction of air defense system of our country.However,in the process of missile’s conceptual design,the strong coupling between multi-disciplines makes it hard to meet the demands of design using traditional serial design methodology,which limits the development of surface-to-air missile to some extent.Multidisciplinary optimization technology considers the coupling effects of disciplinary in the system design process,which is an inevitable tendency of complex system design in the futue.Based on the new generation of medium-long range surface-to-air missile,this article uses multidiscipline design optimization to deal with the coupling effects,and multidisciplinary optimization based on levels of flight performance and control is realized,which promotes the missile overall performance and ensures the controllability and realizability in the conceptual design process meanwhile.This paper researches on incoperating the multidisciplinary optimization technology in the conceptual design process of surface-to-air missile,hoping to improve the design efficiency and quality of the new generation of tactical missile.A brief introduction of the 4 parts is as follows.Firstly,a Missile Conceptual Design(MCDesign)platform is constructed.This essay hackles the conceptual design process for tactical missile,and builds description models and simulation model of the missile in disciplines including aerodynamics,propulsion,configuration,trajectory,structure,thermal protection,guidance and control and fuze warhead matching.By organizing,managing and integrating,the conceptual design platform MCDesign is established,which possess abilities of multi-scheme,multi-discipline,multi-level and multi-granularity design and analyze.Secondly,the modeling process of baseline scheme of missile is given.Based on the MCDesign platform,a series of research are carried out,including design of aerodynamic shape,computation of aerodynamic performance,design of propulsion plan,computation of propulsion performance,conceptual layout,analysis of mass characteristic,design of guidance plan,simulation of ideal trajectory,analysis of dynamic characteristic,design of control plan and simulation of body trajectory,completing the modeling of the fourth ship-to-air missile SM-6 and providing the multidisciplinary optimization with baseline plan.Thirdly,a multidisciplinary optimization of flight performance-oriented is accomplished.Based on the SM-6 missile conceptual design,series of work including construction of optimization problem,analysis of multidisciplinary coupling,construction of design structure matrix,selection of optimization framework and integration of discipline models are completed.The results outline that the optimization objective(terminal velocity of SM-6)rises 68.75 percent,which shows the great effect in dealing with multidisciplinary coupling and performance compromise.Finally,a multidisciplinary optimization of control-oriented is accomplished.The disciplinary model of dynamic characteristic and control and body trajectory are established and the multidisplinary optimization problem considering control capability is proposed.The results outline that the optimization objective(terminal velocity of SM-6)rises 44.2 percent when considers the control capability of the missile and the optimized design can be realized by a PID circuit.This paper is more valuable to the real missile conceptual design process,overcoming the limit of current missile multidisciplinary optimization deign in which the control factor is not incoperated.