Influence of Gas Port on Forces and Their Impulses Acting in an Automatic Weapon

Vu, Tien Dinh; Prochazka, Stanislav; Krist, Zbynek; Vo, Bien Van

doi:10.1109/icmt52455.2021.9502832

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Factors that commonly infuence traditional frearm operation, such as the automaton mass, the reset spring energy storage, and the piston cylinder pressure, as well as factors specifc to the foating machine gun, such as the inner receiver mass, the bidirectional bufer spring energy storage, the internal ballistic pressure, and the reset spring position, were used as factors in the orthogonal design [18][19][20]. Te reset spring position was assigned two levels, A1 and A2, which indicate inner receiver-automaton and receiver-automaton positions, respectively.…”

Section: Factor Selection and Orthogonal Designmentioning

confidence: 99%

A Multifactor Combination Optimization Design Based on Orthogonality for a Two-Degree-of-Freedom Floating Machine Gun Vibration System

Wang,

Xu,

et al. 2024

Shock and Vibration

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This paper introduces a novel type of floating machine gun that can be simplified as a self-balancing two-degree-of-freedom mechanical system with distinct vibration characteristics. The model accounts for intricate motion patterns and encompasses numerous potential influencing factors. Multifactor combination optimization of the system represents a pressing engineering challenge. After establishing a simulation model for the machine gun and validating it experimentally, seven factors were chosen as optimization variables. The maximum recoil displacement of the inner receiver (MRD) and the firing rate were chosen to be indicators. Orthogonal combinations and variance analyses were used, and the effects of multiple factors were analyzed using SPSS software; these processes led to a determination of the optimal combination. The results indicated that the piston cylinder pressure, the bi-directional buffer spring energy storage, and the inner receiver mass significantly affected the MRD. Furthermore, the automaton mass and the reset spring energy storage were found to substantially affect the firing rate. Careful analysis of the variance results facilitated the determination of the optimal combination of parameter values. Remarkably, the optimal combination chosen resulted in an MRD reduction of approximately 20.2% and a firing rate increase of approximately 26.6%.

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Section: Factor Selection and Orthogonal Designmentioning

confidence: 99%

A Multifactor Combination Optimization Design Based on Orthogonality for a Two-Degree-of-Freedom Floating Machine Gun Vibration System

Wang,

Xu,

et al. 2024

Shock and Vibration

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“…where mb -the mass of breech block carrier; mrs -the mass of return spring; mbi-mass of moveable of breech mechanism; mc -the mass of cartridge case; Sp -the crosssectional area of piston; pc -the gas pressure in the gas cylinder; patm -the atmospheric pressure; Frs0 -the initial pre-stress of the return spring; Crs -the return spring constant; xp -the piston displacement; Ff -the friction force; Ffob -the friction force while unlocking breech block; Fexc -the cartridge case extraction force from cartridge chamber. Specific values of the masses and forces for the piston linked to the breech mechanism of the UK-59 machine gun are given in [11].…”

Section: Fig 5 Cfd Model Of the Gas-operated Mechanism Of Uk-59 Machi...mentioning

confidence: 99%

CFD Simulation of the Gas-Operated Weapon Drive Applied to the UK-59 Machine Gun

Prochazka

Horák

et al. 2022

AiMT

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The flow characteristics of propellant gases inside the gas cylinder of the weapon gas-operated mechanism, applied to the UK-59 machine gun, are studied. Computational Fluid Dynamics (CFD) in ANSYS Fluent is used for the simulation of flow through the gas port from the barrel bore to the gas cylinder and back. The study's findings are presented along with the piston law of motion and thermodynamic quantities of gases inside the cylinder, specifically the pressure, temperature, and velocity distribution of gases in the cylinder for various piston displacements. The experiment was carried out to specify the pressure of the gases in the cylinder, as well as the displacement of the piston. The experimentally obtained values are compared to the simulation results with a very good agreement.

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Analysis of gas flow losses in a gas-operated gun

Tran

Nguyễn

et al. 2023

2023 International Conference on Military Technologies (ICMT)

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Influence of Gas Port on Forces and Their Impulses Acting in an Automatic Weapon

Cited by 4 publications

References 3 publications

A Multifactor Combination Optimization Design Based on Orthogonality for a Two-Degree-of-Freedom Floating Machine Gun Vibration System

A Multifactor Combination Optimization Design Based on Orthogonality for a Two-Degree-of-Freedom Floating Machine Gun Vibration System

CFD Simulation of the Gas-Operated Weapon Drive Applied to the UK-59 Machine Gun

Analysis of gas flow losses in a gas-operated gun

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