Keeping in mind the characteristics of high integration and intense coupling on new aircraft design , we present a modeling, integration and solving method of hypersonic aircraft .We develop a parameterized master mod-el technology which is based on Computer Aided Design (CAD) model; it offers base supports for aerodynamic , structural, thermal model and mass estimation .A multidisciplinary design optimization integration technology of high fidelity model with CAD and Computer Aided engineering (CAE) is studied on that basis.At last multidisci-plinary design optimization system architecture of high fidelity model is established on an unpowered hypersonic gli -ding reentry vehicle, and a hybrid search method combining approximation technology with gradient algorithm is used for high-efficiency optimizing of the hypersonic reentry vehicle .% 针对新型飞行器子学科高度集成、学科间强烈耦合的设计特点，提出了一套基于高拟真度学科分析模型的高超声速飞行器多学科建模、集成和求解方法。采用依托 CAD 造型的参数化主模型架构技术进行几何特征建模，为气动、结构、气动热、质量等学科分析模型构建提供基准支持；在此基础上研究了 CAD、CAE 等高拟真度学科分析模型在多学科设计优化中的集成应用方法，并以高超声速无动力滑翔再入飞行器为对象建立了支持高拟真度模型的多学科优化系统构架；最后采用响应面与梯度算法组合的搜索方式实现了再入飞行器的多学科优化。
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