Author(s)

F. Seiler, G. Mathieu, H. Peter & K. Zimmermann

Abstract

Experimental and numerical estimation of gun barrel heating for rapid fire F. Seiler, G. Mathieu, H. Peter & K. Zirnmerrnann French-German Research Institute of Saint-Louis (ISL), Saint-Louis, France Abstract During machine gun or machine cannon firing the gun barrel can warm up to very high temperatures. Depending on the firing cycle, especially for small calibres, the barrel can be fired red-hot. In this case, the machine gun firing must be immediately stopped for cooling. A theoretical calculation to predict the heating of the gun barrel would be desirable to design the weapon according to its future mission demands. For this purpose an interior ballistics model was developed using Prandtl's boundary layer equations to solve the unsteady, compressible and turbulent boundary layer development inside of a gun barrel from the breech to the projectile. The solution for the wall shear stress uses the Reynolds analogy to determine the heat flux into the barrel wall produced by the temperature gra

Keywords