The master model technology for Multidisciplinary Design Optimization of flight vehicle

To support Multidisciplinary Design Optimization (MDO) process of flight vehicle, a multidisciplinary master model technology is proposed. First, the conception model of MDO composed of structure, performance and action was introduced. To construct conception model, the coupled relationship between structure and performance was described and concept of Multidisciplinary Master Model (MMM) was presented. According to the theory model of MDO, the components of MMM was constructed, including System Structure Model (SSM), System Performance Model (SPM), Disciplinary Structure View (DSV), and Disciplinary Performance View (DPV). Additionally, three transform modules of MMM used to deal with the coupled relationships between SSM, SPM, DSV, and DPV were constructed. Based on CAD software, the implementation method of MMM was given. Synthesizing technologies of MMM, CAD, CAE, multidisciplinary optimization, and software integration, the framework of MDO was described. As an example, The MMM of Hypersonic Flight Vehicle involved six disciplines of aerodynamics, propulsion, trajectory, structure, RCS, TPS was developed in CATIA, and the feasibility of MMM technology to be utilized in MDO was validated.