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通过对产品研制过程中遇到的膛压反常现象分析,认为装药结构及挤进过程直接影响发射药点火一致性及燃烧稳定性。发射药燃烧时不断产生的燃气在药粒之间形成气垫,对药粒的撞击、挤压起到缓冲保护作用。改善装药结构、针对具体工程对象适当提高挤进压力,可以改善发射药的点火一致性,这是提高弹道稳定性的一种有效措施。
Through the analysis of chamber pressure anomalies encountered in the process of product development, it is considered that the charge structure and extrusion process have a direct impact on the ignition consistency and combustion stability of the propellant. When the propellant is burned, the gas continuously generates gas cushion between the pellets, which impinges on the pellets and plays the role of cushioning protection. Improving the charge structure and appropriately increasing the squeezing pressure for specific engineering objects can improve the ignition consistency of the propellant, which is an effective measure to improve the ballistic stability.