Results 221 to 230 of about 7,742 (253)

External Ballistics and Accuracy of Lead Free Bullets in 5.56x45mm NATO

30th International Symposium on Ballistics, 2017
Several nations have moved to lead free bullets in 5.56x45mm NATO for use as duty ammunition by military personnel. This study reports on the external ballistics and accuracy of two lead free bullet designs that have been fielded to date, the 62 grain lead free hard core bullet manufactured by RUAG and the 62 grain lead free bullet manufactured by ATK ...
ELYA COURTNEY, AMY COURTNEY, MICHAEL COURTNEY   +2 more
openaire   +1 more source

Research on the simulation method of external Ballistic flight speed of fuze

2017 36th Chinese Control Conference (CCC), 2017
To solve the problem of getting different blowing speed of turbine motor after assembling turbine motor blower of fuze, do the analysis of free jet theory, and deduce the axis velocity formula on the basis of predecessor' research results. According to the theory of fluid mechanics, do the free jet simulation experiment of the round nozzle of constant ...
Naijian Wang, Changsheng Li, Mingyang Lu
openaire   +1 more source

Use of a custom designed external fixator system to treat ballistic injuries to the mandible

International Journal of Oral and Maxillofacial Surgery, 2011
The authors describe a custom designed mandibular external fixator II system that can be used to treat complex, comminuted fractures. The system is adjustable and lightweight, quick, robust, simple to apply, and allows mouth opening during healing, It is well suited to use in the modern war surgery environment.
A J, Gibbons, N, Mackenzie, R S, Breederveld   +2 more
openaire   +2 more sources

Influence of pellet seating on the external ballistic parameters of spring-piston air guns

International Journal of Legal Medicine, 2016
In firearm examiners' and forensic specialists' casework as well as in air gun proof testing, reliable measurement of the weapon's muzzle velocity is indispensable. While there are standardized and generally accepted procedures for testing the performance of air guns, the method of seating the diabolo pellets deeper into the breech of break barrel ...
Ronald, Werner, Benno, Schultz, Matthias, Frank   +2 more
openaire   +2 more sources

Modeling and Simulation of External Ballistics of New Air-Defence Guided Projectile

2019 34rd Youth Academic Annual Conference of Chinese Association of Automation (YAC), 2019
The method of three-dimensional ballistic modeling and simulation of shipborne air-defence guided projectile is discussed. Firstly, the force and guidance law of the projectile are analyzed, and taking the proportional guidance as an example, the method establish the simulation model of the air-defence guided projectile ballistic from the perspective ...
Yao Hong-He, Lu Fa-Xing
openaire   +1 more source

Fractional hyper-ballistic transport under external oscillating electric fields

Chaos: An Interdisciplinary Journal of Nonlinear Science
The generalized Langevin equation (GLE) for a tagged particle in a liquid of charged particles under the influence of external AC electric fields is studied. For the fractional memory kernel in the GLE, the mean square displacement (MSD) of the particle is studied analytically in both the underdamped and overdamped regimes.
Jana Tóthová, Vladimír Lisý
openaire   +3 more sources

EXTERNAL BALLISTICS: PARAMETER ESTIMATION USING POD-RBF

Ballistics 2025
When studying the dynamics of a bullet’s trajectory, multiple variable effects can be measured to attain predictive depiction of the bullet’s behavior. Much of this data has been studied and tested with proven success of limited predictive value. The goal of this paper is to create a reliable model for estimating the trend of how the speed of the ...
Joseph Wilhelm, Jean-Michel Dhainaut
openaire   +1 more source

About the First Integral in the Classical Problem of External Ballistics

Prikladnaâ matematika i mehanika
The transcendental first integral of the classical problem of external ballistics has been retrieved from oblivion. A change of variables was proposed that transformed the integral to a compact form. This allowed for reducing the solution of the problem to constructive quadratures.
B. Ya. Lokshin, V. A. Samsonov
openaire   +1 more source

Analysis of External Ballistics for a Projectile of Caliber 155 MM

2017
The objective of this thesis is to propose a geometry for a projectile to firefighting. The finite volume code STAR − CCM+® is used to calculate forces and moments acting on the projectile and a code is created in MATHEMATICA® to define the characteristics of the trajectory. The PRODAS® is used to verify and validate the models implemented.
Fonte-Boa, Rui, Borges, José, Chaves, José   +2 more
openaire   +1 more source

Post-processing software in the analysis of external and terminal ballistics of bullets in firefights

2013
Purpose: The use of programs of post-processing of MDCT (Multi Detectors Computed Tomography) images as an aid to the radiologist foridentification of the angle of shot of bullets has been previously described, however, to the best of our knowledge, the uses...
openaire   +1 more source