<p>The paper describes investigations carried out to verify a loading mechanism of newly designed modular assault rifle MSBS-5.56. A complex character interaction between its elements during reloading process encouraged the authors implement numerical approach based on multibody system specify essential dynamic characteristics. The achieved results were compared data recorded experimental tests shooting range. Owing proposed modelling methodology, good agreement and studies has been...

Ongoing military conflicts, along with a constant evolution of individual protection devices, have shown an urgent need development in terms the armour piercing capability standard infantry small arms ammunition. The following paper includes brief overview existing armour-piercing intermediate rounds, effort to define most reasonable design perspective projectile. Therefore, various projectiles were designed and evaluated their external ballistic performance for chosen initial conditions,...


 Estimation of kinematic and dynamic parameters weapon mechanisms during operation is one the crucial elements design optimisation. This study presents results numerical experimental investigations a short-recoil-operated action cycle. Theoretical considerations were based on multibody systems finite element approaches. An stand was adopted to investigate characteristics pistol parts provide set slide displacement velocity time courses. Comparison theoretical data allowed for positive...

The paper contains a literature review of studies on several firearms operation systems and articles modern methods calculating the kinematic characteristics weapons. It includes presentation short recoil operated 9 mm PW INKA pistol numerical model. model was created in MCS Adams software which uses multibody systems. boundary conditions for each part were specified their implementation determined. As preliminary results investigations, slide barrel velocity displacement curves obtained....

In the world of small-arms ammunition, precision reigns supreme. The most significant feature ammunition for shooters is undoubtedly repeatability from one shot to next. This study explores detailed assembly process small arms cartridges, leveraging modern machinery and innovative designs employed by cartridge manufacturers. It emphasizes how these tools ensure fundamental necessary quality each batch rounds. Establishing standards highest possible requires assessing impact imprecise on...

Paper presents results of the operational tests AKM rifles modified with commercial parts kits. Modifications were aimed at improving ergonomics gun. Among others, modifications included stock, fore guard, pistol grip, safety switch and trigger mechanism. Research force examination live firing which allowed to evaluate effects on rifles.

Evolution of contemporary military conflicts has revealed some shortcomings existing individual small arms ammunition. The first attempts to undertake research and development works on new weapons ammunition were made in the USA, however, projects are also being launched other countries. This paper presents a short review newly developed rounds for perspective arms’ systems as well an attempt determine caliber weapon. For this purpose, preliminary external terminal ballistic analyses...

Rifles of MSBS-5.56 system are equipped with a mechanism for an easy barrel changing, what was one basic assumptions modularity. But although possible even under field conditions (with the use tools), causes displacement shot pattern mean point. Due to fact that sights mounted on upper receiver, it is important this as small possible. In order determine value displacements point and construction parameters affecting them, series firings were performed using laboratory stand shooting range....

Results of tests, carried out so far for MSBS system rifles, have shown a large impact muzzle devices on spread shots pattern. In order to select the optimal design device, series firings were out, primarily with light machine gun and sniper rifle. It was assumed that weapon jump, which is also most easily measurable parameter, main factor affecting shot pattern at precision firings. The jump parameters determined by using unique laboratory stand allows measurement in conditions as close...

Selected results of practical tests 5,56 mm MSBS (Modular Small arms System) rifles are included within this paper. The main task was to compare operational parameters standard configurated in different layouts: classic (with butt stock) and bull-pup. It the first time, such were possible since both belonged same weapon system. can be assumed, that all noticed differences caused by specific layout difference. Practical includes typical tactical situation e.g. dynamic firing, changing...

Abstract Estimation of stress distribution on the parts a weapon is one most important stages designing and optimization firearms. The paper describes finite element numerical model short recoil operated results parametric analysis parts. Considered changes in loading courses can be result differences applied ammunition (produced accordance with various standards or self-elaborated rounds). Conducted works allowed for estimation approximate critical value propellant gas pressure, which...

The paper describes the results of parametric analysis obtained using multibody systems. Numerical allows checking different variants weapon without need building a lot experimental models. As part analysis, impact slide mass, recoil spring stiffness, friction coefficients, propellant gas pressure, and force bullet engraving barrel on kinematic characteristics were checked. extreme values mass stiffness selected, after crossing them, correct operation would not be possible. pistol was...

The continuous development of production and assembly techniques gives rise to the idea following a new approach in small-arms ammunition design process. Commonly used intermediate cartridges were designed over 60 years ago, their construction processes are not significantly different than what was available almost century ago. Along with recent individual protection devices general availability modern ballistic plates utilized plate carriers type armor, it sparks necessity designing new,...

The main task of presented hereby work was to verify thesis about better accuracy bull-pup rifle comparing classical layout. jump angle assumed as a crucial factor influencing accuracy. Such comparison possible due the fact, that both rifles used in tests belonged same weapon family – Modular Small Arm System. Physical and mathematical models gas operated small arm were developed for numerical simulations. Calculated results compared ones obtained with laboratory stand. Finally, shooting...