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Study on Optimization of Interior Ballistic Performance of Cased Telescoped Ammunition Based on Improved Firefly Algorithm

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PROPELLANTS EXPLOSIVES PYROTECHNICS 2023年第2期48卷

作者： He, Xin-Jia Li, Chao Nanjing Univ Sci & Technol Sch Energy & Power Engn Nanjing 210094 Peoples R China

Considering that the evolution operators of common optimization algorithms such as genetic algorithm has a poor convergence speed and solution accuracy in the interior ballistic performance optimization of artillery, an improved firefly algorithm is selected for the interior ballistic performance optimization of cased telescoped ammunition (CTA). It is applied to the interior ballistic mathematical model of CTA to carry out single-objective optimization and multi-objective optimization respectively. The results show that in the single-objective optimization, the muzzle velocity obtained by using the improved firefly algorithm is larger than other commonly used optimization algorithms. Under the constraints of maximum chamber pressure and relative burnout point, the muzzle velocity can be increased by about 30 m/s. In the multi-objective optimization, three sub-objectives of muzzle velocity, ballistic efficiency and muzzle pressure are considered respectively, and the multi-objective firefly algorithm is applied to comprehensively optimize the interior ballistic performance of CTA. Then, the results are compared with the commonly used multi-objective optimization algorithms, such as non-dominated sorting genetic algorithm version II (NSGA-II) and non-dominated sorting genetic algorithm version III (NSGA-III), the solution results are a series of Pareto optimal solutions. The obtained optimization results improved the interior ballistic performance and launch safety, providing reference for the reasonable matching of charge structure parameters and the selection of optimization algorithm upon the interior ballistic performance optimization of CTA to some extent.

关键词： Cased telescoped ammunition Improved firefly algorithm Multi-objective optimization problem Interior Ballistics charge structure parameters

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