Antitank Projectiles Research Articles

Research on Jet Incoherence of Depleted Uranium Liner

Jet formation is the decisive factor of penetrating power of shaped charge, coherence and stability contribute to penetration. In the same condition, multiple penetrating tests of the shaped charge with depleted uranium(DU) liner did not get the expected results. In order to study the jet forming characteristics of DU liner under static explosion condition, an X-ray photography experiment was designed, which turned out to show the jet being badly incoherent. To research the incoherence of DU shaped charge jet from principles of jet incoherence, supersonic collision worked out to be the reasons for incoherence of the shaped charge jet. This paper provides a method for structural optimization of DU shaped charge and DU liner processing, which has guiding significance for application of DU liner in high explosive antitank projectile.

Potrebne mogućnosti razornog projektila za sistem aktivne zaštite

Concept of an active protection system on combat vehicles with high-explosive fragmentation interceptor projectile is presented in this paper. Development process and characteristics of the active protection system are highly dependent on performance characteristics of an interceptor projectile. The interceptor projectile generating frontal spray of steel spherical fragments was considered. The research on design features of contemporary rocket-propelled anti-tank projectiles was done in order to define required capabilities of the projectile for active protection systems. Vulnerability of an anti-tank projectile was analyzed according to its dimensions and design of main subsystems. Representative models of different types of anti-tank projectiles were considered for vulnerability assessment. Results of minimal fragment number density and minimal impact velocity are presented and the most significant conclusions are made.

Protection of armoured vehicles against chemical, biological and radiological contamination

The article presents problems related to mechanical protection of vehicles with different add-on armours against chemical, biological and radiological contamination. This applies to vehicles with additional passive, reactive and hybrid protection in the form of cassettes against piercing with anti-tank projectiles, piercing with their kinetic energy of impact, and as a result of chemical energy of shaped charges as well as explosively formed projectiles. It has been shown how increased ballistic protection of these vehicles at the same time reduces their decontaminability in various places of the vehicle due to the increased additional surface of the vehicle with cassettes. Prevention of contamination of these cassettes has been presented as a way of reducing hard to reach surface for decontamination and a method of insulating construction elements (stands), fixing these cassettes to the vehicle, from the environment to prevent contact with contaminated liquids and dusts. The selection of appropriate materials is shown, which may affect the improvement of the decontamination efficiency of the vehicle with such cassettes. This applies to the use of materials with low absorption of chemical warfare agents, which prevent the accumulation of large amounts of these agents on contaminated surfaces and improve the effectiveness of decontamination. It also shows how to ensure better access of the disinfectant to as much of the vehicle surface as possible, covered with cassettes that have been contaminated. It shows how a vehicle, in particular with such cassettes, can provide protection against radar detection when Radar Absorbent Material is used on vehicle cassettes.

CONCEPT OF A SEGMENTED PENETRATOR MADE OF TUNGSTEN HEAVY ALLOYS WITH VARIABLE STRENGTH PARAMETERS

The paper describes a concept of increasing the penetration capacities of kinetic antitank projectiles, having a penetrator made of a tungsten based sinter, through the application of materials with variable mechanical characteristics for penetrator’s particular segments. The influence of alloy additions on some strength parameters for the tung-sten based sinters were assessed by using the literature data, and in the next step by numerical analyses of steel plate penetration process calculated for selected configurations of structural materials of penetrator segments. The summary describes some possibilities for modification of the structure of tungsten based sinters which may decisively improve the penetrating capacities.

Analysis Of The Kinetic Energy Transfer To TheTarget During Impact Of Antitank Projectiles

Analysis Of The Kinetic Energy Transfer To TheTarget During Impact Of Antitank Projectiles

Agent Based Modelling of the Equipment Battle Damage

To model equipment battle damage needs reasonably to describe complexity feature of battle damage process. So an agents/space approach was established from Agent Based Modelling. In this scheme agent technology was used to model anti-tank projectiles and its damage effect, and equipment model was treated as three dimension simulating space, and dynamic damage relation was modeled by interaction of agents and space. Furthermore, damaging experiment was carried out, a neural network module was trained with experiment data and embedded into Piercing_Agent. At last a prototype simulating system of equipment battle damage was developed on Mason platform, and simulating result was validated through real war data and physical experiment data.

Reporting on Fratricide

The primary source of military and defence-related information for most Canadians is not parliament, academic journals, specialized university courses, or personal experience (e.g., service in the military or defence administration), but the popular media. Consequently, the media's central role in shaping public attitudes raises an interesting question: how effective is the media in providing accurate and meaningful information?This article will attempt to shed some light on this issue by analyzing coverage of the 2002 fratricide incident at in the pages of the Globe and Mail and the National Post. This case study involves a time-series comparison: initial reports are compared with subsequent ones. As well, reports based on multiple and-preferably-named sources are compared with reports that relied on fewer and/or unnamed sources. Finally, media accounts are compared with information made available from official sources-including the coalition (joint American-Canadian) and Canadian investigative boards as well as the US air force's article 32 hearings (the military grand jury).1 Given this significant data set, it is now possible to review and evaluate the media's response to these events in a broad and comparative context. Overall, it is clear Canada's two national papers got some things right, but they also got a lot of things wrong.THE INCIDENT AT TARNAK FARM AND THE MEDIA'S REACTIONThe basic facts of this case study were as follows. On the night of 19 April 2002, four Canadian soldiers were killed and eight others wounded at a training facility known as Tarnak farm in Afghanistan.2 The soldiers, members of the 3rd battalion of the Princess Patricia's Canadian Light Infantry, had gone to farm-a former al Qaeda training facility a few miles south of Kandahar-to practice close assault tactics and a stalk (an exercise designed to simulate an assault on an armoured vehicle).Over the course of the exercise, the PPCLI soldiers fired a variety of weapons, including light and heavy machine guns, an M-72 light antitank weapon (a single-use recoilless anti-tank projectile), and a Carl Gustav (an 84mm antitank weapon). Partway through the exercise, the muzzle flashes, the tracer ammunition, and the ricochets from the Canadians' weapons attracted the attention of two American F-i6 pilots. The US pilots were returning to their base in Kuwait after a lengthy patrol over Afghanistan, when one of the two pilots-Major Harry Schmidt of the 170th Fighter Squadron (Illinois Air National Guard)-interpreted the flashes as the actions of an enemy force attacking his flight. Shortly thereafter, Schmidt dropped a 500-lb. laser-guided bomb. The bomb killed Sergeant Marc Leger, second in command of the exercise and the range safety officer, Corporal Ainsworth Dyer and Private Nathan Smith, the C-6 7.62mm machine gun detachment firing in support of the tank stalk, and Private Richard Green who operated both a C-9 5.56mm light machine gun and an M-72 during the tank stalk.The four soldiers killed at were the first Canadian soldiers to die as a result of fratricide since the Korean War, and their deaths unleashed a firestorm of media coverage. Over the course of the first week, the initial coverage in both the Globe and Mail and the National Post amounted to a staggering 86 reports, commentaries, and editorials (an average of more than seven items per paper per day). During this initial one-week period, coverage was split almost evenly between the two papers (41 items in the Globe versus 45 in the Post) and the story received pageone coverage for five consecutive days in the Globe and four in the Post. As of October 2006, a total of 315 items had been published (130 in the Globe and 185 in the Post), and the story had received front-page coverage 24 times in the Globe and 29 times in the Post.1Canada's national newspapers responded to events in Afghanistan with a considerable volume of coverage. …

Flow simulation and drag anatomy for antitank projectile configurations

Introduction S projectile configurations (Fig. 1) are fired against armored targets so that the spike acts as a stand-off distance between the armor and the shaped-charge warhead. The conenosed configurations, also shown in Fig. 1, may provide a windshield for reducing the drag, and provide a standoff distance as well. The lower drag for this cone-nosed class should extend the range for these projectiles, if launched at the same speed. In prior studies,' computational results for spiked configurations with increasing geometrical complexity were presented. In Ref. 1, configurations of spikes with no vortex rings and bodies with no base-flow simulations were considered. In Ref. 2, the vortex generator ring was added and the body base flow was computed. The present work adds another degree of complexity, represented by an aftbody with steep boattail and tail fin boom. It thereby lays the foundation for the final step, which is the inclusion of fins on the tail boom. The computations were made using the axisymmetric flow simulation code, using the zonal overlapping topology of Ref. 3. It uses the explicit, time-dependent McCormack numerical scheme. The purpose of this work is to provide the drag anatomy of each geometrical component of the projectile body, for both the spikeand the cone-nosed projectiles, at high supersonic speeds and zero angle of attack.