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The advanced Kontakt-5 explosive reactive armour on this T-90S is arranged in pairs of plates, giving the turret its prominent triangular profile.. An element of explosive reactive armour (ERA) is made of either a sheet or slab of high explosive sandwiched between two metal plates, or multiple "banana shaped" rods filled with high explosive which are referred to as shaped charges.
The advanced Kontakt-5 explosive reactive armour on this Indian Army T-90S is arranged in pairs of plates with a triangular profile. Kontakt-5 is a type of second-generation [1] explosive reactive armour (ERA) originating in the Soviet Union. Due to the shortcomings of Kontakt-1, NII Stali developed a new type of reactive armor, Kontakt-5, so ...
A single panel is 5.4 mm thick with a 260g explosive (85% hexogen) liner, surrounded by a 2.3 mm thick steel sheet. The container weighs 5.3 kg, and the full complement's weight varies from 1.2 to 2 tons depending on the number of containers used [2] [3] The explosive liner is highly insensitive so that it doesn't explode from bullets or ...
Instead, the half-life is defined in terms of probability: "Half-life is the time required for exactly half of the entities to decay on average". In other words, the probability of a radioactive atom decaying within its half-life is 50%. [2] For example, the accompanying image is a simulation of many identical atoms undergoing radioactive decay.
The best result was achieved by utilizing a 20 millimetres (0.79 in) thick MEXAS armour panel on top of a 7.3 millimetres (0.29 in) HHA plate fitted with a 10 millimetres (0.39 in) liner on the interior — a mass efficiency of 3.5; however the higher thickness decreased the thickness efficiency to 0.8 compared to the other tested armour layouts.
A key advantage of electric armour is its lighter weight. [3] Whereas ERA (explosive reacting armour) can add 10 to 20 tons of weight to a tank in explosives, electric armour could be effective with as little as a few tons of weight, [4] [5] [8] significantly reducing the load on the tank and allowing its weight capacity and engine power to be used elsewhere.
The Soviet T-64 was the first mass-produced tank with composite armour The Leclerc tank is equipped with NERA (Non-explosive reactive armour) [1] Depending on the operating state, the Leopard 2 has various extended armour elements such as bomb protection for the top, cage armour, extended mine protection (A6M) or additional armour in the form of composite armour MEXAS or AMAP Plasan SandCat ...
While basic armour of some T-72 versions is better than basic armour of M-84, additional newer and better placed modular Explosive Reactive Armour [50] will provide better cover and protection and new systems will provide much better additional situation awareness with better gun and ammunition.