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A new type of 4.5 inch gun with a longer 55-calibre barrel, it was designed in the 1960s for the Royal Navy's new classes of frigates and destroyers.The weapon, built by Vickers Ltd Armament Division, was developed by the Royal Armament Research and Development Establishment using the Ordnance, QF 105 mm L13 of the Abbot self-propelled gun as a starting point (it used electrical primers).
At 8 mm and 16 mm, respectively, the lens is able to focus on an area 12.25 inches (31.1 cm) and 7 inches (18 cm) in width. [6] Although the official close focus distance is 24 centimetres (9.4 in), [ 1 ] Scott Gietler reported that by using the spot-focus mode, rather than multiple focus points, he was able to achieve a 3 inches (7.6 cm ...
The rounded roofs of early Mark 9 twin and triple turrets of USS Salt Lake City and USS Pensacola with the later turrets of USS New Orleans on the right.. The 8"/55 caliber gun (spoken "eight-inch-fifty-five-caliber") formed the main battery of United States Navy heavy cruisers and two early aircraft carriers.
At 6.24 m (20.5 ft), the length of the KwK 43's barrel was over 1.3 metres longer than of that of the 8.8 cm KwK 36 used for the Tiger I.The cartridge of the KwK 43's shell was also considerably longer (at 82.2 centimetres (32.4 in)) and wider than that of the KwK 36's, meaning that the KwK 43 allows for more room for a heavier propellant charge in its cartridge case than the KwK 36 could.
The 8.8 cm SK C/35 gun weighed 776 kilograms (1,711 lb) and had an overall length of 3.985 meters (13 ft 0.9 in) with a vertical sliding-block breech.The gun fired a 9.5 kg (21 lb) projectile 88 mm in diameter, and the barrel is sometimes described as 45 caliber.
A prominent example of an intercalation compound is potassium graphite, denoted by the formula KC 8. Some graphite intercalation compounds are superconductors. The highest transition temperature (by June 2009) T c = 11.5 K is achieved in CaC 6, and it further increases under applied pressure (15.1 K at 8 GPa). [67]
Other variations include 2A46M, 2A46M-1, 2A46M-2, 2A46M-4, 2A46M-5, and Ukrainian KBA-3 and Chinese ZPT-98. The 2A46 can fire armour-piercing fin-stabilised discarding sabot (APFSDS), high-explosive anti-tank (HEAT) and high-explosive fragmentation (HEF) projectiles.
The Pak 41 barrel was fitted with a horizontal sliding-block breech mechanism resembling that of the 7.5 cm Pak 40, and the semi-automatic gear was a simplified version of that used on the Pak 43. The two-wheel split-trail carriage was from the 10.5 cm leFH 18 field howitzer, with the wheels from the 15 cm s FH howitzer. The Pak 41 was ...