基于液态平衡体的无后坐炮内弹道研究

为了实现无后坐炮在有限空间内安全发射,设计了一种含液态平衡体的新型装药结构。基于该新型装药结构,开展了某口径无后坐炮内弹道性能试验,建立了相应的内弹道模型,计算结果与试验结果吻合较好。在此基础上,分析了液态平衡体初始质量、密度、火药弧厚、喷管喉部直径以及挤进压力等参数对内弹道性能的影响。结果表明:液态平衡体初始质量对最大膛压和炮口速度的影响显著,而其密度的影响较弱; 较厚的火药、较小的喷管喉部直径及较低的挤进压力有利于提高内弹道综合性能。研究结果可为基于液态平衡体的新型无后坐炮内弹道及装药结构设计提供理论指导。

Study on Interior Ballistics of Recoilless Gun Based on Liquid Balance Body

In order to achieve the safety launch of recoilless guns in the confined space, a new charge structure containing liquid balance body was designed. The interior ballistic experiment was carried out based on the new charge structure,and the interior ballistic model was established. The calculated results are in good agreement with the experimental results. On this basis,the effects of the initial liquid balance body mass, the liquid density, the propellant web size, the nozzle throat diameter and the engraving pressure on the interior ballistic performance were analyzed. Results show that the balance body mass has remarkable effect on the maximum chamber pressure and the muzzle velocity,while the effect of the liquid density is little. Larger propellant web size,smaller nozzle throat diameter and lower engraving pressure are in favor of improving the overall interior ballistic performance. The results can offer theoretical guidance for the interior ballistics and charge-structure design of new recoilless gun based on the liquid balance body.