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建立了类X-51A高超声速飞行器的多学科模型,包括外形、气动、推进、质量、热流、弹道等学科.采用多学科设计优化(MDO,Multidisciplinary Design Optimization)方法中的协同优化(CO,Collaborative Optimization)进行了计算,计算流程中构建了两个子系统优化器与弹道学科的代理模型,使用代理模型替代了计算耗时的真实模型.同时为了对比,采用了多学科可行法(MDF,Multidisciplinary Feasible Method)进行了优化计算.结果表明,二者的优化结果基本一致,优化之后的飞行器质量比初始构型飞行器降低了15.2%,航程提升了63.5%,并且使用代理模型后计算效率也得到了很大的提升.验证了基于代理模型的协同优化方法应用于高超声速飞行器设计中的有效性.
A multidisciplinary model of X-51A hypersonic vehicle was established, including shape, aerodynamics, propulsion, mass, heat flow, trajectory and so on.Using multi-disciplinary design optimization (MDO, Multidisciplinary Design Optimization) Optimization is used to calculate the two sub-system optimizer and trajectory disciplines in the calculation process proxy model, the use of proxy model instead of calculating the time-consuming real model.At the same time for comparison, the use of multidisciplinary Feasible The results show that the optimized results of the two methods are basically the same, the optimized mass of the aircraft is 15.2% lower than that of the initial configuration aircraft, the range is increased by 63.5%, and the calculation efficiency is also very good after using the proxy model This paper verifies the effectiveness of the collaborative optimization method based on proxy model in hypersonic vehicle design.