Tactical Missile Multi-disciplinary Integration Design Driving By Parametric Model

Tactical missile overall design is a complicated system engineering involving a number of disciplines. It is a trend to utilize multidisciplinary integration design technology, which we called MID as the abbreviation, to improve the quality and efficiency of tactial missile design process. However, the research exhibits that several problems exist when applying MID in practical tactical missile overall design nowadays. Firstly, the analysis models are generally too simple to be used for engineering design. The coupling among different disciplines are also not fully considered. Apart from that, it is difficult to apply MID into practical engineering deign process. To solve the problems, the paper engages in the researches from three main aspects consisting of tactical missile disciplianry modeling, paramitric modeling and tactical missile MID engineering application investigations. The main contents are summarized as follows:(1) The research status, some key technologies, the advantages as well as the current problems of tactical missile overall design and MID are investigated.(2) The tactical missile disciplinary modeling technologies are investigated according to engineering tactical missile design requirements. The analysis models of aerodynamics, propulsion, geometry & structure, guidance & control and trajectory disciplines are established considering a compromise between computational cost and modeling accuracy.(3) A parametric model driven method is proposed based on design structure matrix rebuilding and data flow analysis. Based on the proposed method, the minimum computational cost is determined by the input and output parameters of the models.(4) A parametric model intergration method is established based on file wrapper technology. The parameter-driven technology of disciplinary analysis models and design process is investigated, which lays the foundation for the following intergration design.(5) A fixed point interation method is utilized to deal with the coupling between propulsion and geometry & structure disciplines when the multidisciplinary coupling is considered in tactical missile overall design.(6) Taking American precision attack munition(PAM) missile for example, the application of multidisciplinary integration design in practical tactical missile engineering design is deeply investigated. Considering the variables, constraints and analysis models of aerodynamics, propulsion, geometry & structure, guidance& control and trajectory disciplines, a multidisciplinary integration design and optimization model of PAM is established. The problem is solved through physical programming method and genetic algorithm. The results show that the synthesis performance of the optimized PAM is significantly improved which illustrates the rationality and effectiveness of MID technology.In conclusion, the paper makes an in-depth investigation of the key technologies in tactical missile MID. The example of PAM illustrates the effectiveness and practicality of the work in this paper.