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Russian 12 Inch 40 Caliber Naval Gun
The 12-inch 40-caliber naval gun was the standard main weapon of the pre-dreadnought battleships of the Imperial Russian Navy. Sixty-eight guns of the first production run were built in 1895–1906 by the Obukhov Works in Saint Petersburg. They were installed on seventeen battleships starting with ''Sissoi Veliky'' and ''Tri Sviatitelia'' and ending with the ''Andrei Pervozvanny'' class. A second production run was ordered to Russian and British gunmakers during World War I. History In 1886 the Imperial Russian Navy adopted the 12-inch 35 caliber Krupp gun. The first batch of six German-made guns was installed on ''Chesma''. Local production of the modified Krupp gun began in 1891.Shirokorad, p. 32. Eleven Obukhov guns were installed on ''Navarin'', ''Chesma'' and ''Georgii Pobedonosets''. The low firing rate of these guns made them a temporary, intermediate weapon. In the same 1891 the Naval Technical Committee ordered the Obukhov Works to design a new gun with improved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smokeless Powder
Finnish smokeless powderSmokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to gunpowder ("black powder"). The combustion products are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder. In addition, smokeless powder does not leave the thick, heavy fouling of hygroscopic material associated with black powder that causes rusting of the barrel. Despite its name, smokeless powder is not completely free of smoke; while there may be little noticeable smoke from small-arms ammunition, smoke from artillery fire can be substantial. Originally invented in 1884 by Paul Vieille, the most common formulations are based on nitrocellulose, but the term was also used to describe various picrate mixtures with nitrate, chlorate, or dichromate oxidizers during the late 19th century, before the advantages of nitrocellulose beca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gangut-class Battleship
The ''Gangut''-class, also known as the ''Sevastopol''-class, were the first dreadnoughts built for the Imperial Russian Navy before World War I. They had a convoluted design history involving several British companies, evolving requirements, an international design competition, and foreign protests. Four ships were ordered in 1909, , , , and . Construction was delayed by financing problems until the Duma formally authorized the ships in 1911. They were delivered from December 1914 through January 1915, although they still needed work on the gun turrets and fire-control systems until mid-1915. Their role was to defend the mouth of the Gulf of Finland against the Germans, who never tried to enter, so the ships spent their time training and providing cover for minelaying operations. Their crews participated in the general mutiny of the Baltic Fleet after the February Revolution in 1917, and joined the Bolsheviks the following year. All of the dreadnoughts except for ''Petropavlovsk' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obukhovskii 12"/52 Pattern 1907 Gun
The Obukhovskii 12"/52 Pattern 1907 gun was a , 52-caliber naval gun. It was the most powerful gun to be mounted aboard battleships of the Imperial Russian Navy and later the Soviet Navy during both world wars. It was later modified by the Soviets and employed as coastal artillery and as a railway gun during World War II. History The Obukhovskii 12"/52 Pattern 1907 was designed to reflect lessons learned from the Russo-Japanese War and despite changes in specifications while the guns were being manufactured they were considered excellent pieces. In April 1906 a conference of twenty admirals and specialists in ship and ordnance design met to determine what the specifications of the new fleet being built to replace the losses suffered during the Russo-Japanese War would be. The consensus of the meeting was that the new battleships would be armed with no less than twelve 12in guns mounted on the ships centerline and capable of delivering a twelve gun broadside. This would be s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Battleship Potemkin
The Russian battleship ''Potemkin'' (russian: Князь Потёмкин Таврический, translit=''Kniaz Potyomkin Tavricheskiy'', links=no, "Prince Potemkin of Taurida") was a pre-dreadnought battleship built for the Imperial Russian Navy's Black Sea Fleet. She became famous when the crew rebelled against the officers in June 1905 (during that year's revolution), which is now viewed as a first step towards the Russian Revolution of 1917. The mutiny later formed the basis of Sergei Eisenstein's 1925 silent film ''Battleship Potemkin''. After the mutineers sought asylum in Constanța, Romania, and after the Russians recovered the ship, her name was changed to ''Panteleimon''. She accidentally sank a Russian submarine in 1909 and was badly damaged when she ran aground in 1911. During World War I, ''Panteleimon'' participated in the Battle of Cape Sarych in late 1914. She covered several bombardments of the Bosphorus fortifications in early 1915, including one where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borodino-class Battleship
The ''Borodino''-class battleships were a group of five pre-dreadnought battleships built for the Imperial Russian Navy around the end of the 19th century. Their design was based on that of the French-built modified to use Russian equipment. The first four ships were finished after the start of the Russo-Japanese War of 1904–1905 and were among the ships ordered to sail from the Baltic Sea to the Far East to relieve the Pacific Squadron besieged by the Japanese in Port Arthur. Three of these ships were sunk and one was captured by the Imperial Japanese Navy at the Battle of Tsushima in 1905. The fifth and final ship, , was not completed in time to participate in the war and served with the Baltic Fleet through World War I. Design and description Tsar Nicholas II had desired a warm-water port on the Pacific since his accession to the throne in 1894. He achieved this ambition in March 1898 when Russia signed a 25-year lease for Port Arthur and the Liaotung Peninsula with C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Battleship Retvizan
''Retvizan'' (russian: Ретвизан) was a pre-dreadnought battleship built before the Russo-Japanese War of 1904–1905 for the Imperial Russian Navy. She was built by the American William Cramp & Sons because Russian shipyards were already at full capacity. Named after a Swedish ship of the line that was captured during the battle of Vyborg Bay in 1790 ( sv, Rättvisan, meaning both ''fairness'' and ''justice''), ''Retvizan'' was briefly assigned to the Baltic Fleet, but was transferred to the Far East in 1902. The ship was torpedoed during the Japanese surprise attack on Port Arthur during the night of 8/9 February 1904 and grounded in the harbour entrance when she attempted to take refuge inside, as her draft had significantly deepened from the amount of water she had taken aboard after the torpedo hit. She was refloated and repaired in time to join the rest of the 1st Pacific Squadron when they attempted to reach Vladivostok through the Japanese blockade on 10 Augus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Machinery
Hydraulic machines use liquid fluid power to perform work. Heavy construction vehicles are a common example. In this type of machine, hydraulic fluid is pumped to various hydraulic motors and hydraulic cylinders throughout the machine and becomes pressurized according to the resistance present. The fluid is controlled directly or automatically by control valves and distributed through hoses, tubes, or pipes. Hydraulic systems, like pneumatic systems, are based on Pascal's law which states that any pressure applied to a fluid inside a closed system will transmit that pressure equally everywhere and in all directions. A hydraulic system uses an incompressible liquid as its fluid, rather than a compressible gas. The popularity of hydraulic machinery is due to the very large amount of power that can be transferred through small tubes and flexible hoses, the high power density and a wide array of actuators that can make use of this power, and the huge multiplication of forces t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Sea Fleet
Chernomorskiy flot , image = Great emblem of the Black Sea fleet.svg , image_size = 150px , caption = Great emblem of the Black Sea fleet , dates = May 13, 1783 – present , country = , allegiance = , branch = Russian Navy , type = , role = Naval warfare; Amphibious military operations;Combat patrols in the Black Sea;Naval presence/diplomacy missions in the Mediterranean and elsewhere , size = 25,000 personnel (including marines) c. 40 surface warships (surface combatants, amphibious, mine warfare) plus support and auxiliaries 7 submarines (2 of which are in the Mediterranean as of March 2022) , command_structure = Russian Armed Forces , garrison = Sevastopol ( HQ), Feodosia (Crimea) Novorossiysk, Tuapse, T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Fleet
, image = Great emblem of the Baltic fleet.svg , image_size = 150 , caption = Baltic Fleet Great ensign , dates = 18 May 1703 – present , country = , allegiance = (1703–1721) (1721–1917) (1917–1922) (1922–1991)(1991–present) , branch = Russian navy , type = , role =Naval warfare; Amphibious warfare;Combat patrols in the Baltic;Naval presence/diplomacy missions in the Atlantic and elsewhere , size = c. 42 Surface warships (surface combatants, major amphibious units, mine warfare) plus support ships and auxiliaries 1 Submarine , command_structure = Russian Armed Forces , garrison = Kaliningrad (HQ)BaltiyskKronstadt , garrison_label = , nickname = , patron = , motto = , colors = , colors_label = , march = , mascot = , equipment = , equipment_label = , battles = Great Northern War * Battle of Stäket *Battle of Gangut Seven Years' War Russo-Swedish War (1788–1790) Russo-Turkish WarsCrimean War Russo-Japanese WarWorld War IRussian Civil War W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schneider Electric
Schneider Electric SE is a French multinational company that specializes in digital automation and energy management. It addresses homes, buildings, data centers, infrastructure and industries, by combining energy technologies, real-time automation, software, and services. Schneider Electric is a Fortune Global 500 company, publicly traded on the Euronext Exchange, and is a component of the Euro Stoxx 50 stock market index. In FY2020, the company posted revenues of €25.2 billion. Schneider Electric is the parent company of Square D, APC, and others. It is also a research company. Head office Schneider Electric has had its head office in Rueil-Malmaison, France since 2000. This headquarters previously housed Schneider subsidiary Télémécanique while the parent company occupied a site in Boulogne-Billancourt. The company uses an international operations model wherein its key personnel and large numbers of its staff are spread across main offices in Reuil-Malmaison, Hong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
