Modeling and Simulation of Interior Ballistics Based on Actual Combustion Characteristics of Propellants

Abstract

A novel interior ballistic model was established by revising actual combustion characteristics describing the relationship between burned propellants (ψ) and pressure impulse (I_t). The discrepancy between theory and experiment for gas releasing of porous propellant was investigated. Furthermore, the model was tested for multiperforated propellants, with relative errors less than 1 and 3% for the maximum pressure and velocity, respectively, indicating that this is a good model to estimate the interior ballistics performance for multiperforated propellants.

Keywords:

• closed bomb test
• gas generation law
• interior ballistics
• multiperforated propellant

ACKNOWLEDGMENTS

The authors thank Prof. Xuehai Ju of NJUST for his generous suggestions on preparing, revising, and finalizing the article. The authors also thank Daniel Brooks of the California Institute of Technology for checking the article and refining the language.