Hypersonic Aerodynamic Characteristics Of Optimization Method

With the development of aeronautic and astronautic engineering, the velocity and the height of the vehicle are ever increasing . It has become the important study that of hypersonic aerodynamic and aerothermodynamics So it is especially important for the optimum design of hypersonic aircraft. There is some study of the optimum methods for hypersonic aircraft. This thesis has done the following works:1. It has been studied for the application of genetic algorithm on the aerothermodynamics and aerodynamic optimum design of hypersonic aircraft. The genetic algorithm in the thesis is based on the real number encoding. There is the application of ranking selection and dynamic punishing, in order to satisfy the demand of dynamic optimum design.2. It has been studied for the application of traditional optimum algorithm on the aerothermodynamics and aerodynamic optimum design of hypersonic aircraft. It has applied the random initial value to success to avoid the part optimization.3. There has applied hybrid genetic algorithm and built the optimum model for hybrid genetic algorithm. In order to apply the virtue of the genetic algorithm and the traditional algorithm, there has united them.4. There has built the module of the analysis for the aerothermodynamics and aerodynamic.5. The optimum design of wings and aircraft is in the thesis. The success application of the method introduced in the paper demonstrates the practicability and responsibility of all algorithms in optimization design of hypersonic aircraft.