【作者】 张帅；

【导师】 余雄庆；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2012， 博士

【摘要】 总体分析与优化是飞机总体设计技术路线中必须具备的重要环节，对飞机总体方案的最终形成具有决定性的作用。现代客机的研制对总体设计的要求进一步提高，必须充分结合客机总体设计的特点，探索适合现代客机的总体分析与优化方法。本文针对客机总体分析与优化问题，研究主要学科分析模型的理论算法，构建完整的客机总体分析与优化技术流程，开发总体分析与优化的集成程序系统。在此基础上，应用总体分析与优化方法，研究中短程客机的总体参数分析、方案优化以及先进技术评估等问题。论文主要内容如下：1）针对客机总体设计特点，总结和归纳了现代飞机总体设计中所用到的总体分析方法和各个专业学科的工程计算模型。对现有分析方法进行改进和修正，对精度要求较高的专业分析模型，则从其微分方程数值模型出发结合特定假设条件推导解析计算方法。2）采用Matlab软件环境实现分析模型的程序设计开发，并且以统一MAT格式数据文件管理分析程序的各类数据，完成总体数据存储和交换；按照学科组成关系与数据关联形式构建总体综合分析程序系统的集成框架，并组合成适合不同总体分析任务类型的分析流程。选取公开资料中发表的各类相关数据，对主要分析模型的精度进行验证。应用总体综合分析程序系统对新一代中短程客机进行参数敏感性分析，给出初步评估结果。3）在iSight和Optimus两种集成优化软件环境下集成总体综合分析程序，构建总体优化的计算环境，并针对不同的总体优化问题建立不同的集成优化流程。应用总体优化计算环境进一步研究中短程客机的总体优化问题，包括总体方案优化、不同设计目标对参数优化的影响以及面向客机族的系列化总体优化等。4）选取先进推进系统、放宽静稳定度、翼梢小翼、自然层流机翼四类先进技术作为中短程客机总体方案设计中技术评估的研究对象，应用客机总体分析与优化方法，分析先进技术应用对方案主要指标的影响，评估先进技术的综合收益。分析模型的精度验证表明，本文所建立的主要学科分析模型满足飞机总体设计阶段的数据精度要求。中短程客机总体设计应用研究也充分表明，本文所建立的总体分析与优化方法具有计算速度快、分析精度高、架构清晰以及运行方式灵活等特点，适合于完成客机总体设计阶段的总体分析与优化任务，也适合于客机总体方案中先进技术的综合评估。更多还原

【Abstract】 In the process of aircraft conceptual design, the integrated analysis and optimization is an essentialpart, and plays a decisive role for generating configuration. With the increasing requirements ofmodern airliners, there is a need to further investigate the integrated analysis and optimization whichis fitted into the conceptual design of modern airliners. This thesis focuses on the issues of theintegrated analysis and optimization in the conceptual design of airliners, including analysis models ofseveral key disciplines, the framework of integrated analysis and optimization, and the computerprogram of integrated analysis and optimization. Based on those achievements, the integrated analysisand optimization methods were applied to solve the problems of primary parameters analysis, designoptimizations and advanced technology assessments in the conceptual design of a short/medium haulairliner. The main contents of the thesis are summarized as follows:1) The characteristics and analysis models of the civil transport conceptual design were reviewed.The existing analysis methods were improved and corrected synthetically, and the analytical methodswere derived from its numerical model of differential equation with the specific assumptions for somedisciplines with higher accuracy. The output of this work is that the analysis models of the maindisciplines were established for airliner conceptual design.2) Matlab software environment was used to implement codes for analysis models, and a MATformat data file was used to manage the data storage and exchange for all analysis models. Accordingto the relationship of subjects and the association of data, the integrating framework was formed forthe integrated analysis program, and some analysis processes were established jointly for differenttypes of integrated analysis tasks. The precision of main analysis models was validated by thecomparison to the data published in the refereneces. After that, the integrated analysis program wasapplied to the sensitivity analysis of primary parameters and determination of the primary parametersfor the conceptual design of the new generation short/medium haul airliner.3) The intergrated optimization framework for the conceptual design of airliner was established inthe optimization software environments (iSight and Optimus), through the use of the integratedanalysis program. The different integrated optimization processes were established for differentoptimization problem for the conceptual design of the airliners. The integrated optimization systemwas applied to further research on the optimization problems for short/medium haul airliner, includingpreliminary design optimization, impacts of different design goals on the values of design variables,and the optimization for conceptual design of airliner family. 4) Four advanced technologies, such as advanced propulsion system, relaxed static stability,winglets, and natural laminar flow wings, were selected as examples for the assessments of advancedtechnology applications in the short/medium haul airliner design. The integrated analysis andoptimization methods were used to assess the effects of the advanced technology applications on theairliner performance and costs.The precisions of the analysis models are verified, and indicate that the disciplines analysis modelestablished in the thesis could satisfy the accuracy requirements for the conceptual design phase ofairliners. The applications in the conceptual design of short/medium haul airliner also indicate that theintegrtaed analysis and optimization methods established in this thesis have the expectedcharacteristics, i.e. quick calculating speed, high precision, concise flowchart, and flexible operation.In summary, the methods established in this thesis are able to be used for the integrated analysis andoptimization, and the assessments of advanced technology applications in the conceptual design ofairliners.更多还原