Study on the influence of air in the recoil mechanism on artillery performance during firing
DOI:
https://doi.org/10.54939/1859-1043.j.mst.111.2026.122-130Keywords:
Hydraulic recoil mechanism; Air; Recoil stability; Artillery dynamics; Numerical simulation.Abstract
This paper investigates the influence of air and structural parameters of the hydraulic recoil mechanisms on the firing process and stability of artillery systems. A mathematical model is developed to describe the internal firing process of the artillery and the dynamics of the recoil components during both the recoil and counter-recoil phases. The paper also calculates the influence of air in the recoil mechanism on recoil resistance force, recoil velocity, recoil displacement, and force distribution characteristics by incorporating the compressibility of the fluid-air mixture through the effective bulk elastic modulus. The paper also investigates the influence of the initial working chamber volume of the recoil brake mechanism on the movement of the recoil components. Simulation results with the artillery D-44 85 mm show that neglecting the influence of air leads to a higher and earlier peak recoil resistance force, a shorter and less stable force stabilization zone, and therefore can cause adverse force impulses acting on the artillery structure. The research results provide a valuable theoretical basis for evaluating the working efficiency of the recoil braking mechanism, as well as contributing to improving the reliability, durability, and technical maintenance efficiency of ground artillery systems.
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