| This paper takes a three-barrel Gatling machine gun as the research object,using classic interior ballistics theory,calculates the combined force of the internal ballistics and the bottom of the gun,and analyzes its basic structure and function.Combining the results of interior ballistics calculation with the working cycle of the automatic mechanism of the Gatling gun,the arrangement of the cam curve groove is analyzed.The power consumption of the whole gun is estimated.In this paper,the virtual prototype model of the gatling machine gun is established,and the rigid body dynamic model of the gatling machine gun is also established.The automaton is simulated under different radio frequencies,and the motion characteristics of the mechanism are obtained,and the forward and backward characteristics are verified;The rigid-flexible coupling dynamic model of the barrel machine gun is established,and the influence of the muzzle jump on the target density is analyzed and calculated.On this basis,the projectile dispersion R100 is 50 mm and the projectile dispersion R50 is 10 mm at 100 m.The conclusion is that the barrel machine gun has good shooting stability,small vibration in the shooting process and reasonable structural arrangement.Finally,the finite element model of the tube-to-tube machine gun system is established,and the modal analysis of the tube-to-tube machine gun system is carried out.The lowest natural frequency of the tube-to-tube machine gun system is 36.994 Hz,while the excitation frequency of the system is 16.67 33.33 Hz at a radio frequency of 1 000 rounds / min.It is concluded that the tube-to-tube machine gun does not produce resonance when it works,and suggestions for structural optimization of the gatling machine gun system are put forward.The research methods and conclusions adopted in this paper provide a certain reference for the dynamic analysis of this type of machine gun and the further design and improvement of gatling machine gun. |
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