劳(Lao)喷管扩张段优化设计的数值方法研究

RESEARCHING OF NUMERICAL METHOD FOR OPTIMAL DESIGN OF LAO NOZZLE OF EXTENSION PART

本文建立了火箭发动机喷管扩张段优化设计 ( Lao喷管 )的型面曲线近似作图法的数学模型 ,将作图法转化为等价的优化问题 ,并给出了优化问题解的迭代方法 ,最后采用泛函网络的方法对离散的数值解进行了曲线拟合 ,以便于数控加工的编程。

In this paper we propose a mathematical model of approximation constructive method,which to get the shape surface curve of optimal design of extension part of rocket motor nozzle.An equivalent optimal method is obtained from the constructive method.An iteration algorithm of the optimal problem is given.Finally we fitting the solution of optimal problem by functional network so that it'll be convenient to program for numerical control process.