152 mm howitzer M1938 (M-10)
name=152-mm howitzer M1938 (M-10)
caption=M-10 in Hämeenlinna artillery museum, Finland.
manufacturer=Plant no. 172
weight=combat: 4,150 kg
travel: 4,550 kg
caliber=152.4 mm (6 in)
rate=3-4 rounds per minute
max_range=12.4 km (7.7 mi)
elevation=-1° to 65°
152-mm howitzer M1938 (M-10) ( _ru. 152-мм гаубица обр. 1938 г. (М-10)) was a Soviet 152.4 mm (6 inch)
howitzerof World War IIera. It was developed in 1937-1938 at the " MotovilikhaMechanical Plant" by a team headed by F. F. Petrov. Although production of the gun was stopped in 1941, it saw combat with the Red Armyuntil the end of Great Patriotic Warand remained in service until the 1950s. Captured pieces were used by Wehrmachtand the Finnish Army. The latter kept the M-10 in service until 2000.
In a tank-mounted variant, M-10T, the gun was mounted on the
By early 1930s the
Red Army(RKKA) started to look for a replacement for the 152-mm howitzer M1909and the 152-mm howitzer M1910. Those pieces, developed before World War I, had unsprung fixed trail carriages and short barrels, which meant poor mobility, insufficient elevation and traverse angles and short range. Although both pieces were eventually modernized, resulting in the 152-mm howitzer M1909/30and the 152-mm howitzer M1910/37respectively, these were relatively minor upgrades which brought only limited improvement in some areas and didn't address others. It was clear that a completely new design was needed. However, at that time Soviets had little experience in developing modern artillery pieces.
Soviets initially tried to solve that problem through a collaboration with
Germany. From its part, Germany, constrained by the limitations of the Treaty of Versailles, looked for a way to proceed with development and joint projects gave them such an opportunity. Among other weapons supplied by Germans was a heavy howitzer, designated in the USSR 152-mm howitzer M1931 (NG). Soon the " MotovilikhaMechanical Plant (MMZ)" was entrusted with the production of NG. However, only 8 pieces were completed in 1932- 1934, and then the production was stopped. The design proved to be too complicated for the Soviet industry of early 1930s (the same fate befell some other designs, e.g. the 122-mm howitzer M1934or 20-mm and 37-mm autocannons) and was considered somewhat heavy (5,445 kg in travelling position). But these early failures it gave Soviet developers some valuable experience.
1937, F. F. Petrov and his design team at the "Motovilikha Ordnance Plant" started work on a new design, the M-10. Technical papers were submitted to the Artillery Directorate on 1 August 1937and on 2 Novemberthe first prototype was completed. Ground trials ( 19 October- 25 October 1938) featured two pieces: No. 302 (L/25 barrel with constant rifling) and No. 303 (L/20 barrel with progressive rifling). The No. 303 was found to be superior. The trials also revealed numerous defects in the gun construction: the howitzer suffered from insufficient upper carriage strength, leaks in recoilbuffer, unreliable suspension etc. For army tests early in 1939an improved design with lengthened barrel was presented. Another series of army tests followed, from 22 December 1939to 10 January 1940, but even before it started - on 29 September 1939- the gun was adopted as 152 mm divisional howitzer model 1938. Later the word "divisional" was removed from the designation.Shirokorad A. B. - Encyclopedia of the Soviet Artillery.]
The M-10 entered production at the "Plant No. 172" in 1939. Until the end of the year 4 pieces were manufactured, 685 more in 1940 and 833 in
1941. About 340 barrels for KV-2heavy tanks were also built (for 334 serial production tanks and a few prototypes and experimental vehicles).Kolomietz M. V. — "KV. "Klim Voroshilov" breakthrough tank".]
Soon after the outbreak of the war mass production of the gun was stopped. The following reasons are typically cited:.Shunkov V. N. - "The Weapons of the Red Army".]
* The M-10 was considered too heavy for divisional artillery and not powerful enough for corps artillery;
* Problems with manufacturing process;
* Lack of requirement for this type of weapon during the defensive phase of the war.
Some found these arguments questionable. Later in the war corps artillery employed the
152-mm howitzer M1943 (D-1)with the same ballistics. Production rates were growing. Even early in the war, the Red Army wasn't passive, but tried to attack at every opportunity; moreover, howitzers are certainly useful in defensive combat too, e.g. for suppressing enemy howitzers. A historian M. Svirin offered the next explanation instead:
* Shortage in powerful artillery tractors;
* Problems with maintenance and repair;
* Complexity and steel intensity of the carriage;
* Soviet ordnance plants either were lost or were busy performing higher-priority tasks.
The M-10 was much more advanced design compared to older Soviet 152 mm howitzers. It had modern split trail carriage, which allowed for much larger traverse. The trails were of riveted construction. The carriage was equipped with suspension and with wheels from the
ZiS-5truck, meaning higher transportation speed.
The barrel, much longer than that of older designs, was fitted with
interrupted screw breechblockwith recoildevices consisting of hydraulicrecoil buffer and hydropneumatic recuperator. The recoil length was variable. Gun shield provided the crew with limited protection from bullets and shell fragments.
Unlike its eventual successor, the D-1, the M-10 was not equipped with muzzle brake. While softening a recoil and thus allowing lighter carrige, muzzle brake has a disadvantage of redirecting some of the gases that escape the barrel toward the ground where they raise dust, revealing the gun position.
The gun could be towed by an artillery tractor or by a horse team. In the latter case, a 400-kg limber was used.
Organization and employment
Under the organization of 1939, each rifle division had a howitzer
regimentwith a 152-mm howitzers battalion(12 pieces). In July 1941these regiment were cancelled. Same fate befell 152-mm howitzers battalions of motorized and armored divisions.
1944, rifle corps of the Red Army had one artillery regiment each. Those regiment consisted of five batteries (totaling 20 pieces), equipped with 152-mm howitzers, 122-mm or 107-mm guns.
Reserve of the Main Command included howitzer regiments (48 pieces) and heavy howitzer
brigades (32 pieces). Those could be merged to form artillery divisions.
1 June 1941the RKKA possessed more than thousand M-10s. [1,058 according to Ivanov A. - "Artillery of the USSR in Second World War" and http://www.soldat.ru/doc/mobilization/mob/table17.html, 1,128 according to Isaev A. - "Antisuvorov".] Many were lost in the early phase of the war. combined with a decision to stop the production it meant only limited quantity remaind in service; these remaining guns in dwindling numbers were used for the remainder of World War II. The M-10 was used against personnel, fortifications and key objects in the rear.
Many guns were captured by the
Wehrmachtearly in the war, and adopted as 15,2 cm sFH 443(r). The Finnish Armycaptured 45 pieces and further 57 were purchased from Germany in 1944. In Finlandthe howitzer, designated 152 H 38, was issued to five heavy artillery battalions and actively used in battle. Finns rather liked the gun, but considered it somewhat heavy. After the end of the hostilities, the M-10 remained in the Finnish service; in 1980s there were some considerations of modernizing it, but the idea was dropped; the guns were stored in the army depots until 2000and then they were finally retired.
The surviving M-10 howitzers can be seen in various military museums and war memorials, for example in the Museum of Artillery and Engineering Forces,
Saint Petersburg, Russia, in the Brest Fortress, in the US Army Ordnance Museum, in HelsinkiMilitary Museum and HämeenlinnaFinnish Artillery Museum.
In addition to the towed howitzer, a vehicle-mounted variant was developed for use in KV-2 heavy tanks. This variant - 152 mm tank howitzer M1938 (M-10T) - had shorter barrel.
A single prototype with powder bag loading was built in 1939.
The M-10 project provided the RKKA corps artillery with a modern 152-mm howitzer, which combined good firepower with good mobility (although, as the example of the D-1 shows, the latter characteristic could be improved without compromising the former). When compared to a typical contemporary howitzer of similar calibre, the M-10 had shorter range, but was lighter. E.g. the German
15 cm sFH 18had a range of 13,325 m - about one kilometer longer than that of the M-10 - but also weighed much more (5,510 kg in traveling position). The same can be said about the US 155-mm howitzer M1 (14,600 m, 5,800 kg) or 149-mm howitzer manufactured by the Italian Ansaldo (14,250 m, 5,500 kg). A German howitzer with characteristics similar to those of the Soviet one - the 15 cm sFH 36- didn't reach mass production. Compared to older pieces such as the French Schneider model 1917 (11,200 m, 4,300 kg), the M-10 had advantage in range and comparable weight.
The M-10 used separate-loading ammunition, with eight different charges. The charges ranges from the "full charge" Zh-536 and smaller charges ranging from the "first" to "sixth", which was the smallest. A "special charge" was used with the BP-540
HEATprojectile. Propellant charges were produced in "full" and "third" variants in munitions factories. All other charges were derived from them by removing small gunpowder bags from charge cartridge. For flash suppression there was a special chemical mixture which was inserted into cartridges before night firing.Ballistic Tables for the 152 mm Howitzer M1943.] 152 mm projectiles for the M-10 weighed about 40 kg, making a difficult job for loaders, who had to carry the projectiles alone.
When set to fragmentation mode, the OF-530 projectile produced fragments which covered an area 70 meters wide and 30 meters deep. When set to high-explosive (HE) action, the exploding shell produced a crater about 3.5 meters in diameter and about 1.2 meters deep. The OF-530 is still fired from modern 152 mm ordnance pieces of the Russian Army.
The G-530 HEAC anti-concrete shell had a muzzle velocity of 457 m/s when fired with the "first" charge. At a range of one kilometer it had 358 m/s terminal velocity and was able to punch through up to 80 centimeters of
reinforced concretebefore detonating a TNT charge which increased the total penetration to 114 centimeters. The G-530 could not be fired with a "full" charge without putting the crew at risk of having the shell explode in the barrel. A special version of the shell, the G-530Sh, was developed to allow use with the full charge.
* Shunkov V. N. - "The Weapons of the Red Army", Mn. Harvest, 1999 (Шунков В. Н. - "Оружие Красной Армии." — Мн.: Харвест, 1999.) ISBN 985-433-469-4
*Shirokorad A. B. - "Encyclopedia of the Soviet Artillery" - Mn. Harvest, 2000 (Широкорад А. Б. Энциклопедия отечественной артиллерии. — Мн.: Харвест, 2000., ISBN 985-433-703-0)
*Ivanov A. - "Artillery of the USSR in Second World War" - SPb Neva, 2003 (Иванов А. Артиллерия СССР во Второй Мировой войне. — СПб., Издательский дом Нева, 2003., ISBN 5-7654-2731-6)
*"Ballistic Tables for the 152-mm Howitzer M1943", M. MoD, 1968 - Таблицы стрельбы 152-мм гаубицы обр. 1943 г.. - М., Военное издательство министерства обороны, 1968.
*Kolomietz M. V. — "KV. "Klim Voroshilov" breakthrough tank", Moscow, 2006, 136 pp. (Коломиец М. В. КВ. «Клим Ворошилов» — танк прорыва — М.: Коллекция, Яуза, ЭКСМО, 2006. — 136 с.:ил. ISBN 5-699-18754-5)
*Isaev A. - "Antisuvorov" - 2004 (Исаев A. - Антисуворов - 2004)
* [http://www.jaegerplatoon.net/ARTILLERY6.htm#152H38 Finnish Army 1918-45: Heavy Howitzers at Jaegerplatoon.net]
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