Results 71 to 80 of about 887 (248)

The development of a high speed wind channel for research in external ballistics [PDF]

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1931
Abstract In November, 1918, the British Ballistic Mission paid a visit to the French Government Laboratory in which experiments on stationary projectiles in a high-speed current of air were being carried out at velocities greater than the velocity of sound by MM. Langevin, Hugenard and Ste. Lague.
openaire   +1 more source

DEVELOPMENT OF MATHEMATICAL AND SOFTWARE FOR SOLVING PROBLEMS OF EXTERNAL BALLISTIC DESIGN

, 2021
Работа посвящена разработке комплекса математического и программного обеспечения для решения задач внешней баллистики при проектировании и отработке боеприпаса ракетноартиллерийского вооружения.
Липанов, А. М., Sufiyanov, V. G., Rusyak, I. G., Русяк, И. Г., Суфиянов, В. Г., Lipanov, A. M., Korolev, S. A., Королев, С. А.   +7 more
core  

Stretch‐shortening cycle force–time and power–time waveform analysis indicates limitations of the contralateral limb benchmark in athletes with ACL injury

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Unilateral countermovement jump (CMJsingle) testing is commonly used after anterior cruciate ligament reconstruction (ACLR) to assess stretch‐shortening cycle (SSC) function and return‐to‐sport readiness. However, the impact of ACLR on contralateral limb SSC function is poorly understood, which may impact the utility of the ...
Shadan Al‐Saket, Zachary McClean, Nathan Boon‐van Mossel, Tanita Botha, Helen Bayne, Cassidy de França, Kati Pasanen, Matthew Jordan   +7 more
wiley   +1 more source

Compound ammunition external ballistics as bodies with discrete and variable weight

, 2015
В статье рассматривается внешняя баллистика составного боеприпаса как тела с дискретнопеременной массой.У статті розглядається зовнішня балістика складового боєприпасу, як тіла з дискретно-перемінною масою.In this article is considered external ...
И.Ю. Бирюков, І.Ю. Бірюков, S.I. Sicshuk, С.І. Сищук, О.Б. Аніпко, С.И. Сыщук, I.Y. Birukov, О.Б. Анипко, O.B. Anipko   +8 more
core  

Investigations of Middle-Caliber Anti-Aircraft Cannon Interior Ballistics including Heat Transfer Problem in Estimation of Critical Burst Length

, 2022
Numerical and experimental investigations of armament systems are an important part of modern design processes. The presented paper reports problems that were encountered on the theoretical analysis of the performance of 35 mm anti-aircraft cannon and ...
Bartosz Fikus, Radosław Trębiński, Zbigniew Surma, Jakub Michalski, Zbigniew Leciejewski, Alicja Dorochowicz, Jacek Kijewski   +6 more
core   +1 more source

On the Assembly of Actin Polymerization‐Powered Motors

Macromolecular Rapid Communications, EarlyView.
Actin polymerization‐powered motors have the highest speed when the actin recruiting‐polymerizing proteins are immobilized in polymer brushes on their surface. These motors orbit around larger tracer particles at pH above the isoelectric point of ActA but dock onto the tracer particles’ surface at lower pH. ABSTRACT Nano‐ and micromotors are a class of
Miguel A. Ramos Docampo, Cathrine Abild Meyer, Brigitte Städler   +2 more
wiley   +1 more source

A Stopped‐Flow Instrument for Millisecond Timescale Reaction Monitoring on a Standard NMR Spectrometer

Magnetic Resonance in Chemistry, EarlyView.
A new stopped‐flow instrument allows kinetic measurements of reactions 10 milliseconds after initiating them by mixing in a flow cell inserted into a standard NMR probe and spectrometer. High‐speed video, pressure and NMR line‐shape data are used to characterise mixing and stopping, and a protodeboronation reaction with a 5‐millisecond half‐life used ...
Andrew M. R. Hall, Edward J. King, Lloyd A. L. Mitchell, George A. Steedman, Stuart Johnstone, Clark Landis, Guy C. Lloyd‐Jones   +6 more
wiley   +1 more source

Projectile Seating Depth Influence on a Small Arms Cartridge Performance

Technologia i Automatyzacja Montażu
In the world of small-arms ammunition, precision reigns supreme. The most significant feature of ammunitionfor shootersis undoubtedly the repeatability from one shot to the next. This study exploresthe detailedassembly process of small arms
Krzysztof Piasta, Jakub Michalski, Bartosz Fikus, Przemysław Kupidura   +3 more
doaj   +1 more source

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

GIS-Based Throwshed Analysis for Conflict Archaeology

Journal of Computer Applications in Archaeology
In conflict archaeology, KOCOA—an acronym for Key terrain, Observation and fields of fire, Concealment and cover, Obstacles and Avenues of approach—is a widely used methodology for battlefield terrain analysis.
Tadeáš Červík, Yann Waersegers, Andreas Paul Zischg, Tibor Lieskovský   +3 more
doaj   +1 more source