Study Effects of Shock Absorbers Parameters to Recoil of Automatic Weapons

Balla, Jiri; Nguyễn, Vân Dung; Krist, Zbynek; Nguyễn, Minh Phú; Vo, Van Bien

doi:10.1109/icmt52455.2021.9502825

Cited by 7 publications

(14 citation statements)

References 4 publications

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“…The equation of burning gas pressure in the barrel [5]: (23) Where: p K is flow function; d G is the gas flow through the gap between the belt and barrel:…”

Section: (21)mentioning

confidence: 99%

“…The study of the wear of guns and artillery barrels has been studied by many authors. However, barrel wear is mainly calculated using the finite element method [1] or the experimental method [2][3][4][5][6][7][8][9][10], and there have not been any indepth studies on the cause and origin affecting it. In this paper, the author focuses on studying the method of determining barrel wear; and then combining the law of barrel wear with the system of interior ballistic equations to establish the complete interior ballistic.…”

Section: Introductionmentioning

confidence: 99%

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STUDY ON METHOD TO DETERMINE THE LIFE OF TESTING GUN THAT FIRES 7.62x25mm AMMUNITION

Phu¹,

Vo²,

Hung³

2023

adeletters

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The article presents a method to determine the life of a testing gun that fires 7.62x25mm ammunition. The scientific basis for determining the life of the test barrel is based on the wear of the rifling lands corresponding to the number of shots. The wear of the barrel is determined by the thermal and mechanical effects of the bullet’s driving band on the lands and the grooves. The results show that: With the number of fires being 1000, 2000, 3000, 4000, 5000, and 6000 respectively, the barrel wear is 0.334mm, 0.668mm, 1.002mm, 1.337mm, 1.671mm, 2.005mm, and the muzzle velocity is reduced respectively by 1.15%, 2.06%, 2.98%, 3.67%, 4.36%, 5.28%. The accuracy of the 7.62x25mm ammunition test results is reduced due to this change. In addition, to ensure the accuracy of the measurements, the barrel needs to be replaced when the number of shots is more than 5000 shots. The paper is an important theoretical basis for determining the gun life used to test infantry ammunition.

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“…The equation of burning gas pressure in the barrel [5]: (23) Where: p K is flow function; d G is the gas flow through the gap between the belt and barrel:…”

Section: (21)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

STUDY ON METHOD TO DETERMINE THE LIFE OF TESTING GUN THAT FIRES 7.62x25mm AMMUNITION

Phu¹,

Vo²,

Hung³

2023

adeletters

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show abstract

“…These forces are cyclic in the case of multiple firing. The definition and detailed explanation of these forces have been presented in the documents [5,16,26,27].…”

Section: Main Forces Acting On the Mechanical Systemmentioning

confidence: 99%

“…Based on the recordings obtained from the High-Speed Camera, the displacement and velocity of the bolt carrier are determined through the data processing software. TeMA software was used to process the obtained data, [15,16,27,30]. Some typical results of the experiments are presented in Table 1.…”

Section: Assessing the Reliability Of The Established Modelmentioning

confidence: 99%

Mathematical Model of Automatic Firing System of Gas-Operated Machine Gun

Vo,

Nguyen,

Nguyen

2023

Applied Engineering Letters

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This paper mentions a new approach to accurately and fully describe the mathematical model of the automatic firing system of gas-operated machine guns. The mathematical model is established based on Lagrange's equations of the second kind. A numerical method was used to solve the research problem. The automatic firing system of the PKMS machine gun (of Russian origin) was selected for calculation and testing. After the research model is calculated, a comparison is made between the theoretical calculation results and the experimental results to verify the mathematical model. The comparison results between the calculation from the theoretical model and the results obtained from the experiment show that the mathematical model is suitable and reliable, the maximum velocity error of the bolt carrier is only 6.53%. The results obtained from this study are the basis for evaluating the working ability of the automatic firing system. This is also a reliable theoretical basis for designers to optimize the structure for automatic firing systems of gas-operated automatic weapons.

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“…With the development of finite element analysis, stress analysis of artillery barrels is mainly expressed in applying loads gradually closer to reality. Some researchers have calculated the stress state of the entire barrel according to the gas pressure distribution in the barrel [10][11][12][13][14][15][16]. Some researchers focus on the heat load of combustion gases acting on the barrel [17].…”

Section: Introductionmentioning

confidence: 99%

Determination the Stress and Deformation of the Cannon Barrel When Fired

NGUYEN,

LAI

2023

ETJ

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This paper presents a calculation process of the stress field of the 130M46 cannon barrel when firing under the load of gas pressure and temperature. The paper will focus on calculating the stress of a barrel and solving some disadvantages of previous methods using the finite element method and the simulation tools of the CFD software. The calculation results are the stress and deformation parameters of the barrel such as normal stress, tangential stress, average stress, radial deformation, tangential deformation, and total displacement. These stress values are determined when firing 1 shot and 8 consecutive shots to determine the allowable durability limit of the gun barrel material. The result of this research can be used to study and analyze some similar technical issues in weapons.

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Study Effects of Shock Absorbers Parameters to Recoil of Automatic Weapons

Cited by 7 publications

References 4 publications

STUDY ON METHOD TO DETERMINE THE LIFE OF TESTING GUN THAT FIRES 7.62x25mm AMMUNITION

STUDY ON METHOD TO DETERMINE THE LIFE OF TESTING GUN THAT FIRES 7.62x25mm AMMUNITION

Mathematical Model of Automatic Firing System of Gas-Operated Machine Gun

Determination the Stress and Deformation of the Cannon Barrel When Fired

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