Results 21 to 30 of about 6,233 (257)

High-resolution mapping and dispersion analyses of volcanic ballistics emitted during the 3rd July 2019 paroxysm at Stromboli

open access: yesScientific Reports, 2023
A detailed mapping of volcanic ballistic projectiles emplaced in a defined area, represents the starting point to derive preparatory data in hazard and risk studies of ballistics phenomena.
M. Bisson   +5 more
semanticscholar   +1 more source

Experimental verification of the internal ballistics numerical simulations of classical weapons in Lagrangian coordinates

open access: yesContinuum Mechanics and Thermodynamics, 2023
Using the possibilities of modern science and technology, it can be said that the presented mathematical model has been formulated without significant simplifications, and its (numerical) solution itself will be performed with high accuracy.
Filip Kagankiewicz, M. Magier
semanticscholar   +1 more source

Ballistic nanofriction [PDF]

open access: yesNature Materials, 2010
Sliding parts in nanosystems such as Nano ElectroMechanical Systems (NEMS) and nanomotors, increasingly involve large speeds, and rotations as well as translations of the moving surfaces; yet, the physics of high speed nanoscale friction is so far unexplored. Here, by simulating the motion of drifting and of kicked Au clusters on graphite - a workhorse
Guerra, R.   +3 more
openaire   +5 more sources

External Ballistics Simplified Model of the “RT – 400” Rocket Aerial Target [PDF]

open access: yesProblemy Mechatroniki, 2018
“RT-400” rocket aerial target system is described in the paper; research method of its simplified external ballistics characteristics is presented and the obtained results are discussed.
Algimantas FEDARAVIČIUS   +3 more
doaj   +1 more source

Optimal control of propellant consumption during vertical lifting of rocket in homogeneous atmosphere using regularized solution of integral equation of the first kind [PDF]

open access: yesINCAS Bulletin, 2020
The article is devoted to the study of the optimal control of propellant consumption during vertical lifting of rocket in homogeneous atmosphere using regularized solution of integral equation of the first kind.
Aleksey G. VIKULOV
doaj   +1 more source

Comparative analysis of different types of ballistic barrels used in the ammunition researches [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2021
Manufacturers offer different types of ballistic barrels made in according to various standards. The paper presents comparison of three types of ballistic barrels: pressure, velocity and accuracy made according to C.I.P.
Dawid Goździk   +2 more
doaj   +1 more source

Assessing forensic ballistics three-dimensionally through graphical reconstruction and immersive VR observation

open access: yesMultimedia tools and applications, 2022
A crime scene can provide valuable evidence critical to explain reason and modality of the occurred crime, and it can also lead to the arrest of criminals.
Luca Guarnera   +5 more
semanticscholar   +1 more source

Ballistic metamaterials

open access: yesOptica, 2020
We report the theoretical prediction and experimental realization of the optical phenomenon of “ballistic resonance.” This resonance, resulting from the interplay between free charge motion in confining geometries and periodic driving electromagnetic fields, can be utilized to achieve negative permittivity at frequencies well above the bulk plasma ...
Kun Li   +6 more
openaire   +2 more sources

Smart membrane absorbing electromagnetic waves based on polyvinyl chloride/graphene composites

open access: yesMaterials Research Express, 2022
The rapid proliferation and intensive use of electronic devices have led to an increase in electronic pollution, such as electronic noise, electromagnetic interference (EMI), and radiofrequency interference (RFI), which cause malfunctions of electronic ...
Sabrina Bouriche   +7 more
doaj   +1 more source

Computational Evaluation of Assembly Technique Influence on Ballistic Performance of a Bullet – Non-linear Relation Between Méplat Size and the Drag Coefficient

open access: yesTechnologia i Automatyzacja Montażu, 2023
The continuous development of production and assembly techniques gives rise to the idea of followinga new approachin the small-arms ammunition design process.
Krzysztof Piasta   +2 more
doaj   +1 more source

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