Results 11 to 20 of about 11,568 (266)

Performance and Modeling of a Two-Stage Light Gas Gun Driven by Gaseous Detonation

open access: yesApplied Sciences, 2020
A two-stage light gas gun driven by gaseous detonation was newly constructed, which can make up for the disadvantages of the insufficient driving capability of high-pressure gas and the constraints of gunpowder.
Weiqi Tang   +7 more
doaj   +1 more source

Experimental Study on Morphological Characteristics of Ventilated Supercavity of Double Disc Cavitator Projectile

open access: yesXibei Gongye Daxue Xuebao, 2019
Based on the principle of independence of cavity sections expansion, a double disc cavitator for underwater projectiles is proposed in this paper.The high-speed water tunnel experiment is carried out to study the generation and morphological ...

doaj   +1 more source

Implementation of a Realistic Damage Model in a Simulated Environment [PDF]

open access: yesProblemy Mechatroniki, 2019
Realism is an important aspect of the virtual shooting range, which increases the quality of the shooting training conducted there. An important element of realism is the modeling of damage arising during the impact of the projectile on the target.
Dominika KAZIOR   +2 more
doaj   +1 more source

Perspective Armour-Piercing Intermediate Cartridge Projectile [PDF]

open access: yesProblemy Mechatroniki, 2023
Ongoing military conflicts, along with a constant evolution of individual protection devices, have shown an urgent need of development in terms of the armour piercing capability of standard infantry small arms ammunition.
Krzysztof PIASTA, Przemysław KUPIDURA
doaj   +1 more source

Experimental Research on the Influences of Head Shape and Surface Properties on the Water Entry Cavity

open access: yesJournal of Marine Science and Engineering, 2022
Addressing the problem of the influence of surface properties on the cavity in the process of a moving body entering water, especially the problems of water entry speed and the cavitation evolution of the round-head, air-delivered projectile that has ...
Yao Shi   +3 more
doaj   +1 more source

Numerical simulation of projectile penetration into steel plate based on material point method

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] The FE method cannot accurately simulate crevasse patterns and the crevasse forming process when dealing with a projectile penetrating into a ship's plate because of mesh distortion.
QIN Yezhi   +3 more
doaj   +1 more source

CD8+ T cell memory is sustained in mice by hepatic stellate cells

open access: yesHepatology, EarlyView., 2022
HSC role in memory CD8+ T cell maintenance. Abstract Background and Aims Long‐lasting immunological memory is the ultimate goal of vaccination. Homeostatic maintenance of memory CD8+ cytotoxic T cells (MemCD8TCs) is thought to be mediated by IL‐15/IL‐15R heterodimer (15HD)‐expressing myeloid cells.
Yi‐Ting Chen   +4 more
wiley   +1 more source

Projectile for a New Intermediate Cartridge [PDF]

open access: yesProblemy Mechatroniki, 2022
Evolution of contemporary military conflicts has revealed some shortcomings of existing individual small arms ammunition. The first attempts to undertake research and development works on new weapons and ammunition were made in the USA, however, some ...
Krzysztof PIASTA   +2 more
doaj   +1 more source

A Mathematical Modeling Approach of Target Damage Strategy on the Intersection Confrontation

open access: yesMathematics, 2022
The efficiency of target damage is to measure the effect of projectile attacks. Because there is antagonism at the intersection of projectiles and targets, it is very difficult to establish scientific damage assessment strategy model and a numerical ...
Hanshan Li, Xiaoqian Zhang, Jingxin Chen
doaj   +1 more source

Influence of the initial velocity of the projectile on the kinematics of the projectile

open access: yesMilitary Technical Collection, 2022
The work uses a mathematical model for determining the frontal air resistance to the movement of the projectile, which based on solving the inverse problem of dynamics. Knowing the flight range at certain angles of aiming given in the firing tables, the functional dependence of the force of the frontal air resistance to the movement of the projectile ...
P. Tkachuk   +3 more
openaire   +1 more source

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