【作者】 雍明培；

【导师】 余雄庆；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2008， 博士

【摘要】 飞机族,也称为飞机系列,是一组相关的、具有某些相似特征的不同飞机型号的集合。由于飞机族考虑了部件或子系统的通用性(即通用平台),因而能有效地缩短整个飞机系列的设计周期,降低开发成本,并使得使用和维护的费用大大降低。基于通用部件的飞机族策略已成为飞机制造企业实现商业成功的一种重要策略。飞机族设计不同于传统的单一机型的飞机设计模式,在概念设计阶段就要同时考虑多个机型的任务需求和技术要求,因此飞机族的设计有其新的设计内容和要求。本论文旨在研究飞机族的设计优化方法,主要贡献体现在以下几个方面:1)论文在分析和总结现有的产品族概念和设计方法基础上,提出了一种面向产品族的二级优化方法,为了减少优化过程中计算量,将代理模型引入到二级优化方法中,进一步提出了基于代理模型的二级方法,以一桁架族设计优化问题为例,验证了这种方法在产品族设计中的有效性。2)将有关产品族概念和方法应用于飞机设计,提出了飞机族设计的研究内容,即提出了飞机族的构型设计、总体参数优化、气动外形优化、结构设计优化和多学科设计优化问题。3)针对飞机族的总体参数优化问题,以干线客机族的总体参数设计为例,应用二级优化方法,研究了一种飞机族总体参数优化方法,研究结果表明这种方法能有效应用于飞机族总体参数的优选。4)针对飞机族的气动优化设计问题,以一支线客机族机翼气动外形设计优化问题为例,应用基于代理模型的二级优化方法,研究了一种飞机族气动外形的优化方法,为飞机族气动外形设计提供了一种有效的优化设计方法。5)针对飞机族的结构优化设计问题,以一支线客机族机翼的结构优化设计为研究对象,应用基于代理模型的二级优化方法和多目标的遗传算法,较好地解决了飞机族的结构优化设计问题。6)飞机族气动/结构的多学科设计优化是更为复杂的问题,以支线客机族机翼的气动/结构优化设计问题为例,对飞机族的多学科设计优化方法进行了探索。在飞机族气动优化和结构优化方法基础上,提出了一种面向飞机族多学科设计优化的三级优化框架,优化计算结果证明了这种方法的可行性。在本文的研究工作中,首次比较系统地将产品族的概念和方法应用于飞机族的设计研究。通过对飞机族的总体参数优化、气动外形优化、结构优化和多学科设计优化的研究,初步形成了一套具有特色的飞机族设计的优化方法。更多还原

【Abstract】 The aircraft family is a set of aircraft that uses common subsystems or common components while meeting different performances or operational requirements. The strategy of sharing components or subsystems in aircraft family can efficiently shorten the design period for a series of aircraft, and reduce the cost of development, as well as significantly cut down the cost of service/maintenance. The aircraft family sharing common subsystems has been an important strategy for aircraft industry in reaching business success.The design method for aircraft family is different from the traditional design method for single aircraft, and multiple missions and requirements should be simultaneously considered in conceptual design phase of aircraft family. This difference leads to new issues for aircraft family design. The research work in this dissertation focuses on the design optimzation method for aircraft family. The marjor contributions of the dissertation are summarized as follows.1) The literatures related to the design of product family are reviewed. A two-level optimization method is proposed for product family design. To reduce the computing expense during optimization process, the surrogate models is used in the two-level optimization process. An example of truss family design is presented to validate the effectiveness of the two-level optimization method in sloving product family design problem.2) The concept and method of the product family are applied to aircraft design. The research issues for aircraft family design are identified, which include configuration design, optimization of primary parameters in conceptual design, aerodynamic design optimization, structural design optimization, and multidisciplinary design optimization for aircraft family.3) The two-level optimization method is applied to sovle the parameter selection problem in the conceptual design for aircraft family. A conceptual design problem of a passenger jet family is used as an example to test the two-level optimization method. The validations indicate that the two-level optimization method is able to find the the optimum parameters for the conceptual design of aircraft family. 4) The two-level optimization method based on the surrogate model is applied to aerodynamic design optimization of aircraft family. A regional aircraft family is used as an example to illustrate aerodynamic design optimization of aircraft family. The results show that the two-level optimization method based on the surrogate model is an efficient method for the aerodynamic design optimization of aircraft family.5) The two-level optimization method based on the surrogate model and Genetic Algorithms are applied to the structural optimization for aircraft family. The wing structural design of a regional aircraft family is used as an example to study the structural optimization for aircraft family. It is found that the two-level optimization method based on the surrogate model can solve the wing structural design optimization of aircraft family in a relatively effective way.6) Multidisciplinary design optimization of aircraft family is a more complex problem. Aimed at studying a method of aerodynamic-structural integrated design optimization for aircraft family, a wing aerodynamic-structural optimization problem of a regional aircraft family is used as an example to illustrate the problem formulation. A three-level optimization method of the wing aerodynamic-structural integrated design for the aircraft family is proposed based on the combination of the aerodynamic optimization method and the structural optimization method of aircraft family. The feasibility of this three-level optimization method is validated by the computational results.In this research, the concept and method of product family are firstly applied to the aircraft design in systematical way. A set of optimization methods for aircraft family are proposed and validated through the systematical studies including optimation of conceptual design, aerodynamic design optimization, structural design optimization and multidisciplinary design optimization for aircraft family.更多还原