Method for testing braking force of muzzle brake

Abstract

The invention discloses a method for testing braking force of a muzzle brake. The method is characterized in that four measuring points on the outer surface of a barrel close to the muzzle brake are symmetrically selected, a unidirectional strain gauge is adhered on each measuring point, and directions of sensitive grids are coincided with the axial direction of the barrel; the strain gauges of the measuring points on upper and lower surfaces of the barrel form a bridge system, the strain gauges of the measuring points on left and right surfaces of the barrel form another bridge system, and an average value is solved via strain on the two bridge systems; a gun shoots, the muzzle brake is impacted by a gas flow of the gun in an aftereffect period, tensile force is applied to the barrel by the muzzle brake, and accordingly the barrel stretches and deforms; and the strain gauges sense that the barrel stretches and deforms, electric signals are generated and are transmitted to a data acquisition unit by a dynamic strain indicator, the axial strain of the barrel caused by the muzzle brake is acquired via data processing, and the braking force is acquired by the aid of the Hooke's law. The method has an epoch-making significance in studying a law of recoil resistance of guns, reducing shooting exciting force and vibration of muzzles and improving shooting dispersion of the guns.

Description

technical field [0001] The invention relates to a method for testing the braking force of a muzzle brake, in particular to a method for testing the braking force of a muzzle brake based on the principle of strain testing under artillery shooting conditions. Background technique [0002] The muzzle brake is used to reduce the impulse of the gunpowder gas to the recoil part during the aftereffect period. It controls the speed and direction of the gunpowder gas in the post-effect period, and uses the method of momentum transmission to reduce the impulse of the gun bore resultant force, so as to reduce the recoil kinetic energy, thereby reducing the force on the gun mount, reducing the quality of the gun mount, and improving the mobility of the gun. . The muzzle brake is divided according to its principle, there are impact and anti-impact muzzle brakes, and small-caliber artillery often uses anti-impact muzzle brakes. After the projectile exits the muzzle, the high-pressure pr...

AI Technical Summary

Problems solved by technology

The braking force of the muzzle brake has a great influence on the recoil resistance of the gun, and the large recoil resistance will not only cause excessive strain on the gun mount, reduce the structural strength reserve of the gun, but also cause a large vibration response of the muzzle, making the shooting The density becomes worse, which reduces the key performance of the artillery

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