推进技术 ›› 1996, Vol. 17 ›› Issue (4): 14-16.

• • 上一篇    下一篇

固体火箭喷管两相流中微粒直径的实用拟合公式

荣先成,李宝盛   

  1. 西北工业大学航天工程学院;西北工业大学航天工程学院
  • 发布日期:2021-08-15

A FITTING FORMULA FOR PARTICLE SIZE IN SOLID ROCKET NOZZLE TWO-PHASE FLOW

  1. Coll. of Astronautics, Northwestern Polytechnical Univ. Xi’an, 710072;Coll. of Astronautics, Northwestern Polytechnical Univ. Xi’an, 710072
  • Published:2021-08-15

摘要: 根据国外实际发动机试车实测的喷管两相流中微粒直径等参数,用多参数最小二乘法拟合出较方便实用的质量加权平均直径D43计算公式,以作为预估发动机性能的依据。

关键词: 喷管气流;二相流;粒度;拟合函数

Abstract: fitting formula for particle size D43 in solid rocket nozzle two-phase flow was developed by using multivariate least square method, which will be used as a criterion for prediction of solidrocket motor performances.

Key words: Nozzle gas flow;Two phase flow;Granularity;Fitting function