飞机总体多学科设计优化的现状与发展方向

Multidisciplinary Design Optimization for Aircraft Conceptual and Preliminary Design:Status and Directions

通过对飞机总体多学科设计优化(Multidisciplinary design optimization,MDO)研究进展的分析,为飞机总体MDO进一步研究和应用提供基础。首先阐述飞机总体MDO与传统飞机总体参数优化的区别,然后介绍MDO领域中重要成果,包括代理模型技术、多学科敏度分析、MDO策略和MDO环境。着重分析飞机总体MDO的关键技术及其实现途径,包括飞机总体MDO流程、参数化飞机几何模型、分析模型的自动生成、耦合关系分析与表示、数据交换与数据管理和MDO环境的建立。指出面向一体化产品开发团队的MDO、基于不确定性的MDO和面向飞机族的MDO是飞机总体MDO研究的3个新的研究方向。飞机总体MDO使飞机总体设计过程更加科学化和自动化。

The state-of-the-art in the multidisciplinary design optimization （MDO） for aircraft conceptual and preliminary design is reviewed. This paper provides a basis for one in understanding MDO, further research and applications of MDO to aircraft conceptual and preliminary design. The differences between MDO and traditional optimization techniques in aircraft design are presented. The common issues in MDO are reviewed, including surrogate models, sensitivity of coupled systems, MDO methods, and MDO computational environment. The emphases are on the key enabling technologies in aircraft MDO, including the strategies of MDO application in aircraft design, a parametric aircraft CAD modeling, automatic generations of analysis models, coupling analysis, and expression among disciplines, data transfer and management, and distributed computing framework. The next frontiers in MDO for aircraft design are MDO for integrated product teams（IPT）, MDO under uncertainty, and MDO for aircraft family. The impact of MDO in aircraft preliminary design is that the design process is more scientific and automatic.