Results 31 to 40 of about 7,742 (253)

Models and Methods for Three External Ballistics Inverse Problems

Bulletin of the South Ural State University. Series "Mathematical Modelling, Programming and Computer Software", 2017
We consider three problems of selecting optimal gun barrel direction (or those of selecting optimal semiaxis position) when firing an unguided artillery projectile on the assumption that the gun barrel semiaxis can move in a connected nonconvex cone having a non-smooth lateral surface and modelling visibility zone restrictions.
Arutyunova, N. K., Dulliev, A. M., Zabotin, V. I.   +2 more
openaire   +2 more sources

Failure and impact behavior of facade panels made of glass fiber reinforced cement(GRC) [PDF]

, 2011
GRC is a cementitious composite material made up of a cement mortar matrix and chopped glass fibers. Due to its outstanding mechanical properties, GRC has been widely used to produce cladding panels and some civil engineering elements.
A. Enfedaque, Correia, D. Cendón, Enfedaque, F. Gálvez, Ferreira, Glinicki, Kim, Litherland, Majumdar, Marikunte, Mindess, Ong, Purnell, Ramakrishna, Shah, V. Sánchez-Gálvez, Weerheijm, Zhang   +18 more
core   +3 more sources

A diagram to facilitate the study of external ballistics [PDF]

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1916
Abstract The semi-graphical method about to do described enables solutions of many dynamical problems of a practical nature to do obtained with ease and rapidity. In particular, useful solutions can be found of problems relating to motion in a resisting medium in cases where the resistance is given as a function of the velocity which ...
openaire   +1 more source

Estimate of projectile initial velocity as a solution of a two-point boundary value problem / Оценка начальной скорости снаряда как решение двухточечной граничной задачи / Procena početne brzine projektila kao rešenje problema granične vrednosti za dve tačke [PDF]

Vojnotehnički Glasnik, 2018
The estimating of a projectile initial velocity is formulated as a two-point boundary value problem. To solve it, the data of a Doppler Radar or the results of solving the Cauchy problem can be used.
Vadim L. Khaikov
doaj   +1 more source

The Tuning of a CFD Model for External Ballistics, Followed by Analyses of the Principal Influences on the Drag Coefficient of the .223 Rem Caliber

Technologies
This paper presents the subject of external ballistics. The presented research employs a contemporary methodological approach, integrating theoretical analysis, CFD simulations, and experimental measurements.
Jiří Maxa, Pavla Šabacká, Robert Bayer, Tomáš Binar, Petr Bača, Jana Švecová, Jaroslav Talár, Martin Vlkovský, Lenka Dobšáková   +8 more
doaj   +1 more source

Aerodynamic and External Ballistic modelling of a Rocket Target with Two Motors in a Parallel Configuration

Mechanics, 2023
Rocket targets are essential for live-fire military training. RT-400 is a short-range rocket target. This rocket must be improvised for a longer range. So, two motors are used to upgrade the range of the rocket. as the dimensions of the rocket change, it is required to analyse the nose cone shape for the prediction of forces and coefficients.
Manimaran, Hari Prasanna, Fedaravičius, Algimantas, Kauno technologijos universitetas   +2 more
openaire   +1 more source

Journal Staff [PDF]

, 2002
Detta examensarbete är en utvecklings- och evalueringsprocess av en numeriskt löst ytterballistik modell för ett eldledningssystem utvecklat av SAAB Technologies.
Skande, Martin
core   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 more
wiley   +1 more source

A ballistics module as a part of the fire control system

Vojnotehnički Glasnik, 2013
This article presents a ballistics module as a part of the fire control system of weapons for fire support (mortars, artillery weapons and rocket launchers). The software is "open" with the prominence of autonomy work.
Branka R. Luković, Veljko P. Petrović, Veselin L. Mrdak   +2 more
doaj   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source