Analysis of the Force Components Exerted on the Mount of the Amphibious Rifle When Operating in the Air

Purpose: This article focuses on the modification of the conventional forces exerted on the mount model, specifically in the context of the amphibious rifle’s aerial shooting capabilities. The focus of this investigation is to the examination of the 5.56 mm amphibious rifle's performance while discharging 5.56 × 45 mm ammunition into the atmosphere. Methods: The theoretical computation yields results that exhibit a strong agreement with the experimental findings. The article applies the model and research approach to practically adjust and enhance the recoil force generated by rounds from dual-medium weapons when fired in the air during the creation of the 5.56 mm gun. In addition, a weapon test was also conducted to verify the results with the calculation theory mentioned in the article. Results: The article presents new findings that establish the scientific foundation for selecting the air intake hole area, determining the parameters of the return spring, and positioning the air intake hole when shooting standard bullets. The article thoroughly analyzes the variables that influence the forces involved in shooting through adjustments. Besides, the examination of methodologies might serve as a valuable resource for designers while developing amphibious rifles and gas-operated firearms. Conclusions: The article’s findings will serve as the scientific foundation for selecting the air intake hole area, determining the parameters of the return spring, and establishing the location of the air intake hole during airborne bullet firing. The article’s model and research findings have been used in practical applications for the development and production of 5.56 mm dual-environment firearms. © Springer Nature Singapore Pte Ltd. 2024.