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考虑到弹底压强、尾翼汽缸内压强变化情况与汽缸张开式尾翼展开关系密切,研究了某型制导炮弹内弹道性能,建立了考虑汽缸充放气过程的内弹道两相流模型。针对尾翼张开异常现象,分析了尾翼汽缸气孔直径变化引起的汽缸压强变化情况,计算结果表明:张开式尾翼汽缸内外压强差随气孔直径的变化而变化,气孔直径变化到一定值时,汽缸尾翼在膛内开始外张。研究结果为分析气孔烧蚀引起的尾翼张开异常现象提供了理论依据。
Taking into account the pressure at the bottom of the bomb, the variation of the pressure in the rear-wing cylinder is closely related to the deployment of the open-end fin of the cylinder. The internal ballistic performance of a guided-guided projectile is studied and an internal ballistic two-phase flow model considering the cylinder charge-discharge process is established. Aiming at the anomaly of tail opening, the change of cylinder pressure caused by the change of stomatal diameter was analyzed. The calculation results show that the pressure difference between inside and outside of open tail airfoil varies with the diameter of stoma, and when the stomatal diameter changes to a certain value, Empennage outside the chamber began to Zhang Zhang. The results provide a theoretical basis for the analysis of tail-opening anomalies caused by stomatal erosion.