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The 85-mm divisional gun D-44 ((ロシア語:85-мм дивизионная пушка Д-44)) was a Soviet divisional 85-mm calibre field artillery gun used in the last action of World War II. It was designed as the replacement for the 76 mm divisional gun M1942 (ZiS-3). The gun is no longer in front-line service with the Russian Ground Forces, although some 200 of the Chinese Type 56 variant are still in service with the Pakistan Army. Wartime service included use by communist forces during the Vietnam War〔(U.S. Artillery School article. )〕 and by Arab forces during their conflicts with Israel. ==Overview== The design of the D-44 started in 1943 at the design bureau of No.9 factory "Uralmash" and production began in 1944. Its GRAU code was 52-P-367.〔http://www.russianarms.ru/forum/index.php?board=270.0〕 The SD-44 was a 1950s variant with an auxiliary propulsion unit and ammunition box for 10 rounds, with 697 issued to the airborne forces (VDV) from 1954.〔Six SD-44's were issued per antitank battery in each airborne regiment, for a total of 18 in an airborne division. Janes, p. 525.〕 The D-44N was a 1960s variant with an APN 3-7 infra-red illumination device for night combat. China received D-44's during the Korean War and began manufacturing a copy, the Type 56, in the early 1960s.〔The People's Liberation Army assigned 12 Type 56 guns per artillery regiment. Brassey's, p. 124.〕 Finally, the Polish Army has equipped some of their D-44 guns with electrical subsystems in the early 1980s and designated them D-44M and D-44MN.〔Janes (2008), p. 899.〕 The barrel was developed from that of the T-34-85 tank and was capable of firing 20-25 high explosive (HE), armor piercing, and high explosive antitank (HEAT) projectiles per minute. Subcaliber BR-365P HVAP-T (high velocity armor piercing-tracer) projectiles were capable of penetrating 100mm of armor at 1000 meters at a ninety-degree obliquity, and the BR-367P HVAP-T projectile penetrates 180mm of armor under the same conditions.〔 The post-war round O-365K HE weighed 9.5 kg and packed 741 grams of TNT as its bursting charge, while the BK-2M HEAT-FS (fin stabilized) projectile can penetrate 300mm of armor. The HEAT round for the Type 56 has a maximum range of 970 meters and will penetrate 100mm of armor at an angle of 65 degrees.〔Brassey's p. 124.〕 The gun uses GAZ-AA tires, and is towed by a 2.5t truck〔Both ZIL-157's and URAL-375D's were used as towing trucks. See Janes and Kopenhagen.〕 or a Ya-12 tractor with the average speed of 20–25 km/h on surfaced roads, and 11 km/h over open terrain, with a maximum towing speed over asphalt roadway of about 55 km/h.〔(85-мм дивизионная пушка Д-44 )〕 The SD-44's auxiliary propulsion unit M-72 of 14 hp can move the gun at road speeds up to 25 km/h.〔(TRADOC Worldwide Equipment Guide, p. 5-4. )〕 The gun uses the OP-2-7 sight with 5.5x magnification for day combat. The sight permits target acquisition at 1500 meters.〔WEG, p. 5-4.〕 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「85 mm divisional gun D-44」の詳細全文を読む スポンサード リンク
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