Wyniki wyszukiwania - BazTech

1

Research of ERAWA-1 and ERAWA-2 Reactive Cassettes

Wiśniewski Adam

Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa

|

2019

|

Vol. 10, Nr 3 (37)

9--18

EN

In the paper there are presented general parameters of shaped charge projectiles (SC) and explosively formed projectiles (EFP), designed for destroying of armed vehicles, and parameters of explosive reactive armours (ERA), which significantly increase capability of protection of rolled homogeneous armour (RHA) against piercing by these projectiles. There are shown examples of destruction of tanks not protected by the ERA. Their parameters are presented on the base of ERAWA-1 and ERAWA-2 Polish reactive cassettes for PT-91 Hard tank. There are described the following requirements: capability of protection of ERAWA-1 and ERAWA-2 cassettes as a result of reaction in the static test of shaped charge projectiles PG-7 and 125 mm BK-14M, effect in the dynamic test of 125 mm BM-15 projectile that pierces through due to its kinetic energy, and resistance to detonation of the cassettes fired by 12.7×107 mm AP B-32 projectiles. There are demonstrated results of the resistance to detonation of the neighboring ERAWA cassettes in case of detonation of the central cassette in the panel. There are presented results of test of resistance to detonation of the ERAWA cassettes while burning on them flammable material (gasoline, napalm), and resistance to detonation of the cassettes dropped from 3 m height onto a hard substrate of RHA. The safe distance for humans after detonation of the projectile and ERAWA-2 cassette was also tested.

PL

W artykule przedstawiono ogólne parametry pocisków kumulacyjnych (Shaped Charge - SC) i pocisków formowanych wybuchowo (Explosively Formed Projectiles - EFP) służące do niszczenia pojazdów opancerzonych oraz parametry pancerzy reaktywnych (Explosive Reactive Armour - ERA), które w znacznym stopniu zmniejszają zdolność przebicia homogenicznych stalowych pancerzy (Rolled Homogeneous Armour - RHA) tych pocisków. Pokazano przykłady zniszczenia czołgów, które nie były chronione pancerzem reaktywnym (ERA). Na przykładzie polskich kaset reaktywnych ERAWA-1 i ERAWA-2 dla czołgu PT-91 Twardy zaprezentowano ich parametry. Określono następujące wymagania: zdolność ochronną kaset ERAWA-1 i ERAWA-2 w wyniku oddziaływania w teście statycznym pocisków kumulacyjnych PG-7 i 125 mm BK-14M, oddziaływania w teście dynamicznym 125 mm BM-15 pocisku przebijającego swoją energią kinetyczną oraz odporności na detonację kaset w wyniku ostrzału pociskami przeciwpancernymi (Armour Piercing - AP) 12.7x107 mm typu B-32. Pokazano wyniki badań odporności na detonację sąsiednich kaset ERAWA w przypadku detonacji środkowej kasety panelu. Przedstawiono wyniki badań odporności na detonację kaset ERAWA w wyniku palenia się na nich materiału łatwopalnego (benzyny, napalmu); odporności na detonację kaset w wyniku zrzucania ich z wysokości 3 m na twarde podłoże RHA. Badano również odległość bezpieczną dla ludzi po detonacji pocisku i kasety ERAWA-2.

2

Using fuzzy logic expert system for the estimation of the probability of armour penetration by PGU-14 shells fired from the GAU-8/A CA

Opala P., Grzesik N., Kuźma K.

Journal of KONES

|

2017

|

Vol. 24, No. 4

211--218

EN

The article discusses the possibility of armour penetration by PGU 14 API shells fired from the GAU-8/A cannon. The considerations focus on questions with regard to the probability of armour penetration with the initially established conditions in the project. In the analysis, the authors took into account three parameters: armour thickness, armour slope and target distance. Based on the initial parameters, the authors estimated the probability of armour penetration. The designed a fuzzy expert system in the MATLAB software as well as conducting simulation of its performance in the Simulink programmes. The authors presented the performance of the system based on twenty samples for research, which simulate different thickness of the target armour, different distance from the target and different slope of the armour. The authors presented control surfaces, due to which it is possible to analyse the system performance. They also show the simulation process in the Simulink software package with the preset values. On the basis of the created controller, it is clear that a well-developed system, which had undergone testing and optimization, is capable of calculating near reality probability values. The designed system might improve fire effectiveness of ground targets during air training and combat tasks, as well as optimizing the consumption of air-to-ground armour piercing (AP) shells.

3

Light reactive-passive armour

Wiśniewski A.

Materiały Wysokoenergetyczne

|

2010

|

T. 2

15--21

EN

In this work the examples of protection of light fighting vehicles armoured with additional reactive armours are described. The way of protection of light fighting vehicles with the use of compositereactive armours against penetration with HEAT projectiles (with penetration ability of 300 mm RHA) and against armour-piercing bullets of small calibre (up to 14.5 mm) are shown on the example of BWP-1. Technical parameters of the CERAWA-1 armour, the kind of its assembly on BWP-1 and the results of firing of thin RHA armour (protected by the CERAWA-1 armour) with the use of PG-7 shape charge projectile are presented. There are also the results of static tests of three variants of reactivepassive panels against PG-7 projectiles’ perforation.

4

Multipurpose ammunition capabilities & functioning mechanisms

Wold B. E., Ødegårdstuen G.

Problemy Techniki Uzbrojenia

|

1999

|

R. 28, z. 68

7--13

EN

The Multipurpose ammunition was invented, at Raufoss more than 25 years ago, to cover a wide range of targets. It was designed to have armour penetration capabilities, and a delayed action. The High Explosive does not detonate, but deflagrates, and therefore produces large and heavy fragments within the target.