Results 31 to 40 of about 6,233 (257)

USE OF SODIUM RHODIZONATE IN FIREARM USE CASES: CAN IT BE USEFUL IN IDENTIFYING THE SHOOTER? [PDF]

open access: yesEuromediterranean Biomedical Journal, 2023
The sodium rhodizonate test is a simple colorimetric technique used to identify traces of lead and barium. A positive test provides rapid and photographically documentable results for shots fired at distances not exceeding 50 cm.
Benedetta Pia De Luca
doaj   +1 more source

Heat Transfer Modelling and Simulation of a 120 mm Smoothbore Gun Barrel During Interior Ballistics

open access: yesDefence Science Journal, 2022
Understanding the heat transfer phenomenon during interior ballistics and consequently presenting a realistic model is very important to predict the temperature distribution inside the cannon barrel, which influences the gun wear and the cook-off ...
Ç. Susantez, A. Caldeira
semanticscholar   +1 more source

Another tool in the experimental toolbox: On the use of aluminum as a substitute for chert in North American prehistoric ballistics research and beyond

open access: yesNorth American archaeologist (Print), 2022
Experimental archaeology continues to mature methodologically and theoretically. Around the world, practitioners are increasingly using modern materials that would have been unavailable to prehistoric people in archaeological experiments.
M. Eren   +10 more
semanticscholar   +1 more source

Pronking and bounding allow a fast escape across a grassland populated by scattered obstacles

open access: yesRoyal Society Open Science, 2023
Some quadrupeds have evolved the ability of pronking, which consists in leaping by extending the four limbs simultaneously. Pronking is typically observed in some ungulate species inhabiting grassland populated by obstacles such as shrubs, rocks and ...
Francesco Righini   +3 more
doaj   +1 more source

Explicit form of the “modified point mass trajectory model” for the use in Fire Control Systems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
The main objective of this article is to obtain equations of motion of the spin–stabilized projectile in the presence of non–constant wind. Introducing models allowing utilization of inhomogeneous wind is dictated by new possibilities created by the use ...
L. Baranowski, P. Majewski, J. Szymonik
doaj   +1 more source

ON THE QUANTITATIVE INVESTIGATION OF THE INTERMEDIATE BALLISTICS: VELOCITY MEASUREMENT OF THE MUZZLE FLOW

open access: yesProceedings of the 32nd International Symposium on Ballistics, 2022
In the context of intermediate ballistics, a thorough understanding of the muzzle flow is necessary to optimize the design of muzzle devices and long-range projectiles.
A. Moumen   +5 more
semanticscholar   +1 more source

Numerical evaluation of an autofrettaged thick-walled cylinder under dynamically applied axially non-uniform internal service pressure distribution

open access: yesDefence Technology, 2018
A dynamical moving pressure structural numerical calculation model using the internal ballistics calculation pressure-time results was constituted and the vicinity of the internal ballistics and quasi-internal ballistics structural model was checked. The
Onur Güngör, Veli Çelik
doaj   +1 more source

Cylindro-Conical Mild Steel Projectile Impact on E-Glass Fiber Reinforced Laminated Composite Plate Including Delamination Analysis

open access: yesEuropean Mechanical Science, 2021
Computational impact analysis of an E-glass fiber reinforced laminated composite structure with a conical nose shaped projectile is performed including delamination analysis.
Hande Yavuz
doaj   +1 more source

Results of experimental research of wound ballistics of separate types and calibers of modern bullets

open access: yesMedičnì Perspektivi, 2021
There was made the analysis of wound ballistics of modern expansive bullets in comparison with shell bullets on 25 blocks of ballistic plasticine (ROMA PLASTILINA No.
V. Tsymbalyuk   +6 more
semanticscholar   +1 more source

Thermal decomposition and kinetics of plastic bonded explosives based on mixture of HMX and TATB with polymer matrices

open access: yesDefence Technology, 2017
This work describes thermal decomposition behaviour of plastic bonded explosives (PBXs) based on mixture of l,3,5,7-tetranitro- 1,3,5,7-tetrazocane (HMX) and 2,4,6- triamino-1,3,5-trinitrobenzene (TATB) with Viton A as polymer binder.
Arjun Singh   +5 more
doaj   +1 more source

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