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The D-10 is a Soviet 100 mm tank gun developed in late World War II. It originally equipped the SU-100 tank destroyers and was later selected for the T-55 tank, equipping these as late as 1979. On the T-55 the D-10 continues to be in active service in many countries. == History == At the beginning of 1944, the T-34 tank's F-34 76.2 mm tank gun was replaced by a more powerful 85 mm gun. This rendered the year-old SU-85 tank destroyer effectively obsolescent, since its D-5T 85 mm gun was now also fielded by a more flexible medium tank. F. F. Petrov's Design Bureau at Artillery Factory No. 9 was assigned the task of producing a 100 mm anti-tank gun that could be used on the SU-85 chassis, for the proposed SU-100. Petrov's team modified the S-34 naval gun for use in an armoured fighting vehicle. The D-10 is a high-velocity gun of 100 mm bore diameter, with a barrel length of 53.5 calibres. Muzzle velocity of 895 m/s gave it good anti-tank performance by late-war standards. Initially it could penetrate about 149 mm of steel armor plate at 1,000 m range, superior to the German 75 mm KwK 42 mounted on the Panther tank and the Tiger I's 88 mm KwK 36 gun. Testing against Panther tanks at Kubinka, showed the D-10T could penetrate the Panther's glacis at its maximum range of 1500 m. This performance grew when APDS and more modern ammunition types were developed after the war. After the war a more effective high-explosive shell was also developed, taking advantage of the larger 100 mm bore. It was originally designed to equip the SU-100 tank destroyer as the D-10S (for ''sаmokhodnaya'', 'self-propelled'), and was later mounted on the post-war T-54 main battle tank as the D-10T (for ''tankovaya'', 'tank' adj.). There was no significant difference in functionality or performance. It was also tested on the T-34-100, T-44-100, KV-100, and IS-2 (''obyekt 245''). In 1955 a stabilizer (vertical-plane STP-1 ''Gorizont'') and bore evacuator were added to the new D-10TG version of the gun. In 1956, the subsequent D-10T2S version of the gun began production for T-54B and T-55 tanks, equipped with two-plane ''Tsyklon'' gun stabilization. Versions of the D-10 were installed on new tanks as late as 1979, and thousands still remain in service in various countries. Returning to its naval roots, a version of the D-10 was installed as a coastal artillery piece in Finland in the 1960s. This weapon is designated 100 56 TK in Finnish Navy service and consists of a complete T-55 tank turret without the stabilizer but furnished with a manually operated ammunition lift, a chute for used cases, and gun laying apparatus allowing indirect fire directed by remote fire control. The maximum elevation of the barrel was also increased and the turret was furnished with new aiming optics, in some cases including a thermographic camera for night use.〔Enqvist (1999), pp.217-219〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「D-10 tank gun」の詳細全文を読む スポンサード リンク
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