Multidisciplinary design optimization of reentry vehicle based on high fidelity model

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 model 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 multidisciplinary design optimization system architecture of high fidelity model is established on an unpowered hypersonic gliding reentry vehicle, and a hybrid search method combining approximation technology with gradient algorithm is used for high-efficiency optimizing of the hypersonic reentry vehicle.