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Object 140

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Revision as of 18:16, 10 July 2015
Link to Object 430
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Latest revision as of 10:35, 23 August 2016
Redirected page to Tank:R97 Object 140
 
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?{{TankData|Tank=Object_140+#REDIRECT[[Tank:R97_Object_140]]
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?|Gallery=+
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?|InTheGame_pros=+
?* Very high damage per minute+
?* Superb agility+
?* Good top speed+
?* Very strong all-round turret armor+
?* Has excellent terrain passability+
?* Loses very little speed while turning+
?* Excellent accuracy, both on the move and stationary+
?* Has a low profile which makes it harder to hit and means it has better camo rating+
?* Extremely well angled frontal hull armor (better effective armor than the [[T-62A]])+
?* Better gun depression than both other Russian tier X mediums+
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?|InTheGame_cons=+
?* Upper portion of the turret can be overmatched by most shells, plus bulging cupolas+
?* Commonly suffers module damage, especially fuel tanks and ammo rack+
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?|InTheGame_performance=+
?In comparison to its sister tanks, the Object 140 is the fastest, and gains an extra degree of turret depression - allowing it to make use of more terrain to hull down and minimizing exposure as it fires. It generally, more so than its predecessor, the [[T-54]], relies on vision control and camo as opposed to armor to achieve its goals of dealing damage and scouting for the rest of the team. While the turret can take a beating frontally, it does have an egg shell-like top, with only 30mm of armor, meaning that while the gun has more room and can depress more than in the T-62A, the better of its 2 nigh-identical counterparts, it can't sit in hulldown spots like it. For this reason, rather than the defining gameplay of the T-54, a medium with elements of a heavy's armor, the 140 is more of a pure medium, and although it is a very capable opponent, it doesn't have quite as much staying power. That said, like most of the others, it's miles ahead in gameplay terms when viewed against NATO 105mm-armed mediums.+
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?|InTheGame_research=+
?* It comes fully researched+
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?|InTheGame_equipment=+
?Vertical Stabilizer Mk 1, Medium-Caliber Tank Gun Rammer, Improved Ventilation Class 2, Coated Optics+
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?|History=+
?Object 140 was an experimental medium tank developed between 1953 and 1958 in Nizhny Tagil in order to improve/replace the T-54. Two prototypes were built, but in 1958 the project was terminated in favor of the [[Object 430]], better known under his production designation T-55.+
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?==Development history==+
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?At the time when Morozov was working on his Object 430 tank, a young engineer, Leonid N. Kartsev, was the head of the OKB-520 design bureau of Uralvagonzavod factory (UVZ) in Nizhny Tagil. He was responsible for the T-54A (Object 137G) and T-54B (Object 137G2) modernizations of T-54 main battle tank. After work on the T-54M (Object 139) modernization was abandoned he and his design team started working on a new tank, called Object 140. The new tank had a suspension with six light road wheels made of aluminum. The turret was cast and armed with a 100 mm D-54TS tank gun with the Molniya two-plane stabilization system. The tank carried 50 rounds. The chief designer of the legendary V-2 diesel engine, Ivan Trashutin refused to modify the engine to demanded 580hp specification, so Kartsev turned to Barnaul engine plants chief designer Evgeny Artiemejev. The plant manufactured V-series engines for agricultural and other domestic applications. Artiemejev received the idea well and agreed to develop the 580hp version. +
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?After initial prototypes were completed, the weight stood at 36.5t, a half ton over the design specification. Kartsev choose to work the weight down for real, instead of hiding it to the paperwork (an usual procedure among designers of the era). To overcome this, aluminum roadwheels and aluminum engine cover were introduced among other minor modifications. The engine was turned on its lap to the bottom of the hull, a solution which reduced the height of the engine compartment but caused further modifications to the engine and considerably complicated maintenance. +
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?In 1957 Uralvagonzavod built two Ob'yekt 140 prototypes which were put on trials soon after. On hes memoirs Kartsev recall that during assembly and factory tests he became more and more aware that the tank was low-tech, difficult to operate and repair. Only one plant in the whole soviet union was able to cast some of the necessary plates, and specific parts on the engine compartment were not serial productable at all. Kartsev mentions that his engineers needed to use dentist mirror to install exhaust collectors from a hatch below the tank. After few sleepless nights, Kartsev decided to write a letter himself to the Central Commitee, and demand the cancellation of the project. To his surprise, he was agreed and not even punished for wasting 16 million rubles of public money on the project.+
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?Whilst still on moral guilt from hes failure, he started working on yet another T-54 main battle tank modernization called the T-55 (Object 155) in which he included one of the key innovations from his Object 140 tank: the upper fuel tanks were fitted with mounts for tank gun ammunition. This increased the ammunition load carried by the tank to 45 rounds. The aluminium roadwheels later made it to the T-72 tank. +
?The T-54/55 series eventually became the most-produced tank in history. Estimated production numbers for the series range from 86,000 to 100,000. +
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?|HistoricalGallery=+
?image:Object_140_at_Kubinka_tank_museum.jpg{{!}}Object 140 at Kubinka tank museum+
?image:Object_140_at_Kubinka_testing_grounds.jpg{{!}}Object 140 at Kubinka testing grounds+
?image:Object_140.jpg{{!}}Object 140+
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?|Ref_references=+
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?|Ref_sources= Карцев, Леонид Николаевич: Воспоминания Главного конструктора танков+
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?|Ref_links= https://militera.lib.ru/memo/russian/kartsev_ln/08.html+
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?|Sidebar_Camostop=16.7+
?|Sidebar_Camomove=12.5+
?|Sidebar_Camofire=3.3+
?|Sidebar_Passhard=0.527+
?|Sidebar_Passmed=0.623+
?|Sidebar_Passsoft=1.438+
?|Sidebar_DispTurret=0.096+
?|Sidebar_DispRecoil=3.836+
?|Sidebar_DispAccel=0.077+
?|Sidebar_DispTurning=0.077+
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Latest revision as of 10:35, 23 August 2016

#REDIRECTTank:R97 Object 140
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