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Journal of Projectiles, Rockets, Missiles and Guidance >

2026 , Vol. 46 >Issue 4: 353 - 363

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2026.04.002

Academic article

A Parameter-model Coupling-based Predictive Method for the Internal Ballistic Performance of Solid Rocket Motor

  • YE Yifan ,
  • DENG Heng , * ,
  • DANG Jinfeng ,
  • JING Lifeng ,
  • ZHANG Nan ,
  • WEN Jinhang
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  • National Key Laboratory of Land and Air Based Information Perception and Control, Xi’an Modern Control Technology Research Institute, Xi’an 710065,Shaanxi, China

Received date: 2026-01-13

  Online published: 2026-08-20

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Abstract

To further improve the prediction accuracy of solid rocket motor performance a parameter-model coupling-based predictive method for the internal ballistic performance of solid rocket motors is proposed.Firstly,the key factors influencing the prediction deviations are identified by analyzing the discrepancies between the predicted results of the classical zero-dimensional internal ballistic model and the actual motor operations.Secondly,in consideration of the characteristics of these factors,the prediction method is adjusted by using the undetermined parameters and the performance correction models to account for their respective effects.Based on this,a coupled prediction framework integrating both approaches is established.Finally,the internal ballistic performance is predicted and analyzed based on test data by taking the precise performance prediction problems of single-chamber single-thrust and single-chamber dual-thrust solid rocket motors as examples The results indicate that the proposed method significantly enhances the prediction accuracy of macroscopic internal ballistic parameters such as thrust and chamber pressure,while also enabling the precise estimation of mesoscopic parameters including burning surface area,nozzle throat diameter,and propellant burning rate.The prediction deviations for thrust and chamber pressure remain within 1%,and the prediction deviation for mass flow rate remains within 0.1%,thereby supporting comprehensive analysis of the engine's operational process.

Key words： solid rocket motor; internal ballistic performance; performance prediction method; parameter identification; model correction

Cite this article

YE Yifan , DENG Heng , DANG Jinfeng , JING Lifeng , ZHANG Nan , WEN Jinhang . A Parameter-model Coupling-based Predictive Method for the Internal Ballistic Performance of Solid Rocket Motor[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2026 , 46(4) : 353 -363 . DOI: 10.15892/j.cnki.djzdxb.2026.04.002

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