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Journal of Projectiles, Rockets, Missiles and Guidance >

2020 , Vol. 40 >Issue 2: 60 - 62

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2020.02.015

Discrimination Technology for the Nozzle Throat Diameter Erosion Performance of Solid Rocket Motor

  • LI Yuan ,
  • ZHOU Yanqing ,
  • SUN Zhanpeng ,
  • SUN Di ,
  • MA Liang
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  • The 41st Institute of the Fourth Academy, CASC, Xi’an 710025, China

Received date: 2019-04-10

  Online published: 2025-05-30

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Abstract

The variation curve of nozzle throat diameter erosion performance of solid rocket motor (SRM) was studied by static ignition testing data to study the change law of nozzle throat diameter erosion performance. Macroscopic analysis method is used basing on the ground ignition test data of SRM in order to obtain the real time change trend of nozzle throat diameter and establish the discrimination model of nozzle throat diameter erosion. The results show that the identification model can be commendably used to simulate the variation of nozzle-diameter during SRM working process, and the model calculation value is in good agreement with the nozzle throat diameter measurement. In engineering development, when the design state of the SRM is certain, the model can be used to calculate the change of nozzle throat diameter erosion, and provide reference for the engine internal ballistic performance prediction.

Key words： solid rocket motor; nozzle throat diameter; erosion; discrimination; model

Cite this article

LI Yuan , ZHOU Yanqing , SUN Zhanpeng , SUN Di , MA Liang . Discrimination Technology for the Nozzle Throat Diameter Erosion Performance of Solid Rocket Motor[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2020 , 40(2) : 60 -62 . DOI: 10.15892/j.cnki.djzdxb.2020.02.015

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