Study on the influence of projectile on muzzle disturbance

Liu, Feifei; Song, Yanming; Yu, Hailong; Lin, Wen-ding; Zhang, Jie; Si, Zhi-hui; Ding, M K; Rui, Xiaoting

doi:10.1016/j.dt.2018.07.016

Cited by 18 publications

(9 citation statements)

References 3 publications

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“…The nonlinear finite element, orthogonal test method, and rigid body dynamics have been used to determine that the clearance between projectile and bore. [1][2][3][4] In the analysis of the dynamic process of firing, it has been determined that the deformation and dynamic response of a guided projectile is affected by the engraving force. 5,6 Procha´zka and Ninh 7 determined that a high temperature in the barrel walls causes more deformation than the mechanical load of the shot.…”

Section: Introductionmentioning

confidence: 99%

Internal ballistics of polygonal and grooved barrels: A comparative study

et al. 2021

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As a parameter important ballistic, the research about polygonal and grooved barrels’ behavior has not been widely carried out. The pressures, velocities, stresses, deformations, and strains generated by the firing of 9 mm × 19 mm ammunition in weapons with polygonal barrels are analyzed numerically and experimentally, compared with those generated in pistols with grooved barrels. The Finite Element Method with equal boundary and loading conditions was used in both types of guns, specifying the actual materials of the projectile and the barrels. Subsequently, experimental tests were carried out on various weapons with 9 mm ammunitions of 115, 122, and 124 gr. The results show that the 9 mm bullet fired in a polygonal barrel undergoes a maximum deformation towards its exterior of 0.178 mm and interior of 0.158 mm, with stress up to 295.85 MPa. Compared with 0.025 mm maximum external deformation and 0.112 mm internal deformation of 9 mm projectiles fired in a grooved barrel, with stress up to 269.79 MPa. The deformation in the polygonal barrel is in a greater area, but the rifling impression left is less deep, making its identification more difficult. Although there are differences in the stresses and strains obtained, similar velocity and pressure parameters are achieved in the two types of barrels. This has application in the development and standardization of new kinds of barrels and weapons.

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Section: Introductionmentioning

confidence: 99%

Internal ballistics of polygonal and grooved barrels: A comparative study

et al. 2021

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“…Gun-projectile interaction has been investigated through large amount of researches. Experimental setups, analytical and finite element models have been developed to simulate the gun-projectile interaction and to examine the sensitivity of parameters on the dispersion [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

“…The effects of the projectile mass, mass eccentricity, dynamic unbalance, the load deviation, and the clearance between the projectile and the bore on the muzzle disturbance of a gun barrel has been analysed using orthogonal test method 22 . It was observed that projectile loading offset on the muzzle disturbance is most significant.…”

Section: Introductionmentioning

confidence: 99%

Effects of Projectile and Gun Parameters on the Dispersion

Dursun

2020

Def. Sc. Jl.

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Main battle tanks constitute one of the most powerful fire powers for the armoured land forces. To use this very high fire power efficiently, the dispersion of shot impacts becomes crucial. Dispersion is affected by the aerodynamic factors, gun-projectile interactions, projectile and gun dependent factors, manufacturing tolerances and environmental factors. The change in aerodynamic factors and environmental conditions varies the aerodynamic forces applied on the projectile and this affects the dispersion characteristics of the projectile. In this study, the effects of the changes in recoil stiffness, gun support stiffness, projectile muzzle velocity and manufacturing tolerances of projectile forward/rear bourrelet diameters on the dispersion for 120 mm L44 and L55 calibre guns are investigated. Armour piercing fin stabilised discarding sabot type projectile is used in the analysis. Statistical dispersion analyses including interior ballistic, in-bore balloting and exterior ballistic analyses are conducted using PRODAS ballistic software. According to the results, it is determined that the decrease in projectile/bore clearance (forward/rear bourrelet diameter) results in improved dispersion of ammunition. The 10% changes from the nominal recoil stiffness and the vertical support stiffness values have negligible effects on the dispersion. In addition, the results show that muzzle velocity variations influence the dispersion in vertical direction substantially. Using the procedure applied in this study, it is shown that different clearance conditions can be analysed and most suitable tolerances may be determined taking into consideration of both the gun system performance and manufacturability.

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“…21 The influences of projectile mass, mass eccentricity, dynamic unbalance as well as clearance between projectile and bore were studied with the orthogonal test method through which the launch dynamics was analysed. 22 The stochastic simulation principle was used to construct the tank launch dynamic simulation system which provided the theoretical foundation to improve upon the firing dispersion. 22…”

Section: Introductionmentioning

confidence: 99%

“…22 The stochastic simulation principle was used to construct the tank launch dynamic simulation system which provided the theoretical foundation to improve upon the firing dispersion. 22…”

Section: Introductionmentioning

confidence: 99%

Vibration control of a military vehicle weapon platform under the influence of integrated ride and cornering dynamics

Banerjee

Balamurugan

Kumar

2020

Proceedings of the Institution of Mechanical Engineers, Part K:

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The present study is focussed upon vibration control of the weapon elevation and azimuth dynamics mathematical model under influence of the 20 degree of freedom integrated ride and cornering dynamics non-linear mathematical model of a military vehicle with trailing arm suspension. The PID, LQR and Backstepping control techniques are applied in the weapon dynamics model in order to achieve the desired level of gun stabilisation over different manoeuvring situations. The control methods are initially implemented in the weapon elevation dynamics mathematical model which is subjected to vehicle ride response inputs only. In the later section, the control methods are incorporated in the azimuth dynamics mathematical model which is subjected to the integrated ride and cornering dynamic response inputs from different manoeuvres. The control forces are incorporated in the governing equations of motion for the weapon elevation and azimuth dynamics. The equations of motion for the weapon elevation and azimuth dynamics with incorporated control parameters, are transformed into state space matrix domain and solved by using Matlab. The elevation and azimuth dynamic responses are observed over the random terrain and with variable track velocities, respectively and compared with the corresponding passive models. It is observed that adequate attenuation of the vehicle dynamic inputs could be attained with the control techniques which led to desired weapon stabilisation in both elevation and azimuth directions. Compared to other controllers, backstepping control strategy is observed to provide the maximum attenuation in weapon responses by directly considering the Lyapunov stability criterion in its formulation. Therefore, the basic focus is to evaluate the gun muzzle response reduction by implementing different control techniques under the influence of a non-linear vehicle dynamic platform. These studies would provide the motivation and foundation behind design and development of gun control system for the military vehicles with All Electric Drive.

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Study on the influence of projectile on muzzle disturbance

Cited by 18 publications

References 3 publications

Internal ballistics of polygonal and grooved barrels: A comparative study

Internal ballistics of polygonal and grooved barrels: A comparative study

Effects of Projectile and Gun Parameters on the Dispersion

Vibration control of a military vehicle weapon platform under the influence of integrated ride and cornering dynamics

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