Multiple Unmanned Armored Vehicle Formation Transform

2020 ◽  
pp. 316-325
Author(s):  
Miqi Huang ◽  
Daxin Tian ◽  
Xuting Duan
Keyword(s):  
Armored Vehicle

AN IMPROVED ARMORED VEHICLE KRAZ “FIONA” NOISE SILENCER

2019 ◽  
pp. 21-26
Author(s):  
Volodymyr Fedorov ◽  
Vasyl’ Yanovsky ◽  
Dmytro Kovalshuk
Keyword(s):  
Noise Reduction ◽  
Speed Of Sound ◽  
Acoustic Waves ◽  
Noise Level ◽  
Combustion Engine ◽  
Environmental Aspect ◽  
Exhaust Gases ◽  
Ecological Requirements ◽  
On The Road ◽  
Armored Vehicle

Ecological requirements for cars grow from year to year, both in the world as a whole, and in Ukraine in particular. This is especially true of noise pollution. Additionally, noise reduction becomes relevant, taking into account the conduct of military operations during the last 5 years on the territory of Ukraine. The war has caused a special need for military vehicles for which masking properties are vital. Noise is a serious disincentive factor. Therefore, its reduction for a military vehicle, apart from the environmental aspect, is of a purely military nature, that is, it is extremely important. The car has many sources of noise there are many ways to deal with them. One of the most powerful source of noise is the sleeping bag. This kind of noise is reduced by means of silencers of noise. The vast majority of silencer data in the basis of its design has a reactive (or resonant) muffler. To calculate the jet silencer you must know the speed of sound in the sleeping bags. In order to increase the acoustic efficiency of reactive and resonant mufflers of exhaust gases noise of the ICE of cars, an experimental method was proposed for determining the speed of sound in the sleighs. Implementation of the method is carried out by measuring the attenuation of acoustic waves. The noise level of the bedrooms is measured without silencer and silencer. Based on the data obtained, the noise reduction performance of the residual is established. From the well-known formula, based on the calculation of the efficiency of the silencing of a jet muffler, a formula is obtained for calculating the speed of sound in the sleeping quays. In this formula, all parameters are known: the level of silencer efficiency, the noise level of the sleeping, the ratio of areas of cross sections of the muffler and the inlet pipe and the length of the muffler. The sound speed thus established can continue to be used not only for engines of the type for which measurements and calculations were made, but also with a certain approximation for some other types of engines. This method provides high accuracy for determining the required parameter. In the given work on the example of the armored car KrAZ “Fiona” the calculation of efficiency increase of the reactive silencer is made due to the above-mentioned method. Also, the projected decrease in the external noise level of the KrAZ Armored Vehicle “Fiona” is considered by determining the speed of sound in the recesses on the trunk cycle on the road with acceleration up to speed of 50 km/h (75 km/h) and the movement with this speed, as well as when driving at a speed of 45 km/h. Keywords: transport, armored car, internal combustion engine, exhaust, exhaust gases, noise, source, acoustic efficiency, acoustic efficiency, speed of sound, jet muffler.

NUMERICAL SIMULATION OF VENTILATION SYSTEM WITHIN AN ARMORED VEHICLE CABIN

2007 ◽  
Vol 14 (2) ◽  
pp. 201-223
Author(s):  
Chin-Lung Chang ◽  
Chang-Hsien Tai ◽  
Chien-Hsiung Tsai ◽  
Yu-Ren Wang ◽  
Qing-Shan Hon
Keyword(s):  
Numerical Simulation ◽  
Ventilation System ◽  
Vehicle Cabin ◽  
Armored Vehicle

An Improved Faster R-CNN Algorithm for Detection of Multi-scale Tank Armored Vehicle Targets

2018 ◽  
Vol 30 (12) ◽  
pp. 2278
Author(s):  
Quandong Wang ◽  
Tianqing Chang ◽  
Lei Zhang ◽  
Wenj Dai
Keyword(s):  
Multi Scale ◽  
Armored Vehicle

The Construction of 3d Virtual Driving Scene of Police Wheeled Armored Vehicle

2016 ◽  
Vol 1 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Caoshan Wang ◽  
◽  
Ning Shan ◽  
Huafeng Lei ◽  
◽  
...  
Keyword(s):  
Armored Vehicle

scholarly journals Experimental Investigation on the Damage Characteristics for Light Armored Vehicle by Large Caliber Rifle Projectile

2021 ◽  
Vol 1855 (1) ◽  
pp. 012012
Author(s):  
Jinming Li ◽  
Guanghua Wang ◽  
Wenmin Yan ◽  
Shu Wang ◽  
Ruimin Mai
Keyword(s):  
Experimental Investigation ◽  
Damage Characteristics ◽  
Armored Vehicle

scholarly journals The logistics of police power: Armored vehicles, colonial boomerangs, and strategies of circulation

2020 ◽  
Vol 38 (6) ◽  
pp. 1138-1156
Author(s):  
Derek S Denman
Keyword(s):  
Urban Space ◽  
Material Composition ◽  
Critical Reading ◽  
Spatial Processes ◽  
Police Power ◽  
Defense Logistics Agency ◽  
Armored Vehicles ◽  
Armored Vehicle ◽  
Colonial Warfare

Images of police armored vehicles in Ferguson and Baltimore have been influential in a public conversation about the militarization of the police. However, recent critical and abolitionist work on policing rejects the concept of “militarization” for obscuring the longstanding histories and institutional connections between military and police apparatuses. By following the transfers of armored vehicles to police, this article illuminates the logistical pathways that connect colonial warfare and domestic policing, adding an account of the material composition of police power to the historical work of critical and abolitionist thinkers. The article proceeds through a critical reading of records of the Defense Logistics Agency, tracking the transfer of surplus armored vehicles to the police. Designated as “high-visibility property” by the Defense Logistics Agency, these vehicles testify to the materiality of police power. The article then tracks the visibility and materiality of these vehicles as they are deployed in urban and suburban spaces and considers their unique capacity to suppress the democratic energies of crowds. Tracking the armored vehicle provides a way to ask how the rigid lines of fortified urban space are organized into mobile vectors and where ongoing processes of colonization enter these spatial processes.

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