An Experimental Investigation of Long-Range Projectiles under Different Wind Conditions

M. Nasir Uddin¹, Md. Humayun Kabir Bhuiyan² and Dr. Golam Mostofa^2,

¹Chief Engineer (Mechanical & Electrical), Mongla Port Authority, Mongla, Bagerhat, Bangladesh

²Department of Mechanical Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh

Cite this paper:
M. Nasir Uddin, Md. Humayun Kabir Bhuiyan and Dr. Golam Mostofa. An Experimental Investigation of Long-Range Projectiles under Different Wind Conditions. American Journal of Mechanical Engineering. 2021; 9(1):7-17. doi: 10.12691/ajme-9-1-2

Abstract

Due to the rapid development of the Field Artillery Weapon System (AWS) the projectiles play an important role in modern time ammunition and the development of an efficient projectile is very important. The design parameters of a projectile depend on the drag and lift force acting on it. Therefore, a detailed experimental and simulation is required to understand the projectile performance against the wind. In this article, an experimental and numerical investigation of long-range Artillery projectile (Field and Medium) under different wind conditions are carried out. Three different sizes of projectiles are used in this experiment (105, 122, and 130 mm). The experiment is carried out by placing the projectile in front of the wind tunnel. The simulation was done using simulation software packages changing the Angle of Attack (AOA) (30°, 35°, 40°, 45°, and 50°) keeping the wind velocity and geometry the same. The pressure coefficients have been calculated from the measured values of the surface static pressure distribution on the projectile. Later, the drag and lift coefficients are obtained from the measured pressure and a projected area of the projectiles. The wind flow effect on the projectiles is also analyzed by Ansys software. The simulation and experimental results show a similar trend regarding, drag forces and lift forces. The simulation result shows that the size of the projectile is an important factor that is mostly related to the drag and as well as lift forces.

Keywords:
projectile long-range cfd drag force lift force angle of attack

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