固体发动机喷管内部型面最佳设计

OPTIMIZATION DESIGN OF INTERNAL CONTOUR FOR SOLID MOTOR NOZZLE

本文在一维两相平衡流动理论基础上，在相同推力和一组给定的设计参数条件下，分析确定使喷管扩散段长度最短的内部最佳型面为一特定系数的三次多项式，该型面在大的和高膨胀比特别是长度受到限制的喷管上使用。

Based on the theory of one-dimensional equilibrium flow of gas mixture with particles and optimization rule of lightening construction, the minimum length nozzle contour is determined to be a third-order polynomial with particular coefficienes under the conditions of same thrust and a set of given design parameters. This contour is of high practical value for larges nozzle, the nozzle with high rate of expansion and especially for the nozzle with the limit to length.