基于改进协同优化方法的固体运载火箭多学科设计优化

Multidisciplinary design optimization of solid launch vehicles based on collaborative optimization

研究固体运载火箭多学科协同设计优化问题。建立固体运载火箭多学科设计优化相关学科模型,包括总体学科、推进学科、气动学科、质量学科和弹道学科模型,构建固体运载火箭协同优化设计框架;提出含序贯策略的改进协同优化方法,解决固体运载火箭学科间耦合变量过多带来的系统级设计变量规模过大问题,实现固体运载火箭多学科协同设计优化。仿真结果表明,优化方案的运载火箭起飞质量比基线方案减小7.1%,优化方法具有较高的智能化和自动化水平,提高了设计水平,降低了设计难度。

The muhidisciplinary design optimization of solid launch vehicles with collaborative optimization method was investigated. Disciplinary analysis models for multidisciplinary design optimization were established, including conceptual model, propulsion model, aerodynamic model, mass model and trajectory model. The collaborative optimization frame was constructed. Improved collab- orative optimization method with sequential strategy was proposed to resolve the design variable scale problem of system level caused by the strong-coupling disciplinary, and the muhidisciplinary design optimization of solid launch vehicle was achieved. Simulation resuits show that takeoff mass of optimal scheme is reduced by 7.1% compared with the primary scheme. The optimization design method is highly intelligent and automatic, which may reduce the design difficulty and improve the design level.