![]() ![]() The upgrade proposed by Team Challenger 2 is limited to the electronics and optics of the tank only. In fact the British Army even considered replacing the Challenger 2 due to the 元0A1 gun's poor performance. This means the gun barrel has grooves at the interior, which leads to two problems: for one, they limit the maximum pressure for autofrettage, which directly affects the maximum operating pressure for tank ammunition - the 元0 gun of the Challenger 2 cannot withstand as high pressures as the old Rheinmetall L44 gun from 1979! The second problem of the rifling is the increase of the internal surface by 20-30%, which increases surface friction and thus reduces muzzle velocity. Unlike pretty much all other modern tanks (bar the Arjun, but this isn't really modern in various aspects), the Challenger 2 uses a rifled gun. When the Russian Army presented their new T-14 Armata tank, the lackluster penetration of the 元0 gun made the British Army worry, wether this weapon is still useful. The main reason why the British Army demanded an upgrade for the Challenger 2 was the questionable lethality of the 元0A1 tank gun. So currently, the Challenger 2 design does not allow hunter/killer operations during night. During operations with low visibility (night operations, dusty/desert environments, etc.) the commander of the CR2 has to fall back to mirroring the image of the gunner's TOGS-2 into his own optics. While all modern tanks since the 1990s are fitted with a thermal imaging system as part of the independent optronics of the commander, the commander of a Challenger 2 has only a day sight. ![]()
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