The New System Of The Muzzle Device Test Device

Muzzle brake belongs to artillery reverse recoil device. It plays an important role in lightweight and mobility. Considering the shortcomings of the traditional muzzle brake test method and the muzzle brake structure characteristic that can only be affected by structure which has been proved on the artillery test, this paper proposes a method using compressed air of medium pressure (less than5MPa) instead of powder gas to muzzle brake test, realizing the automation control and data processing.Through the control volume method, combined with the definition of the muzzle brake structure characteristic, a calculation formula was deduced with the total pressure and axial wall force as the main physical quantity under steady flow and unsteady flow. A test method was designed for the total pressure and axial wall force. Because of compressed air of medium pressure and high pressure powder gas difference in testing, muzzle brake characteristics were calculated with computational fluid dynamics under different inlet total pressure and total temperature, steady flow and unsteady flow, different kinds of gas, the calculation results show that the muzzle brake structure characteristic has no relationship with inlet total pressure, inlet total temperature, steady flow and unsteady flow and gas species, so it can use medium pressure air of normal temperature instead of traditional powder gas. A test method using the same inlet diameter muzzle brake was designed based on geometric similarity. An overall scheme of the test device and the main components of the structure was designed. Finally, the structure characteristic, aftereffect period effect coefficient and efficiency of a real muzzle brake were calculated, using computational fluid dynamics based on the test method. The results satisfied the design requirements.