11-inch M1877 cannon

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11-inch M1877 cannon
General Information
Military designation: 11-дюймовая пушка обр. 1877 г
Manufacturer country: Russian Empire 1914Russian Empire Russia
Developer / Manufacturer: Obukhov works
Development year: 1879
Start of production: 1879
Number of pieces: 12
Weapon Category: cannon
Technical specifications
Pipe length: 6,104 m
Caliber :

279 mm

Number of trains : 64
Elevation range: angular degrees depending on the mount
Side straightening area: depending on the carriage
Furnishing
Closure Type : prismatic wedge lock system Krupp
Charging principle: Grenade and propellant bag

The 11-inch cannon M1877 (Russian: 11-дюймовая пушка обр. 1877 г, after conversion to the metric system: 280-мм орудие обр. 1877 г.) was a naval gun of the Imperial Russian Navy .

history

In 1879, the Naval Office decided to manufacture a new 11-inch cannon based on the drawings of the 11-inch cannon of the Army Office of the Imperial Russian Army. Basically it is an elongated 11-inch M1867 cannon . The number and depth of the trains were changed, the basic construction and especially the lock remained the same. The guns were tested with a propellant charge of 60 kg of black powder. After testing, the first two cannons of this type were used on small gunboats . The disappearing carriage designed by Popow was used .

In the following years other gunboats were equipped with this weapon. On the gunboats Burja (Буря) Tutscha (Туча) Burun (Бурун) and Groza (Гроза) one has Pivot mount positioned with front-mounted pivot pins while on the boats Wichr (Вихрь) dozhd (Дождь) Sneg (Снег) and Degree (Град) center pivot mounts were used.

In 1889 there were a total of eleven 11-inch M1867 cannons and ten 11-inch M1877 cannons , two further 11-inch M1877 cannons were still being manufactured at the Obuchow works . A total of twelve weapons each, i.e. a total of 24, were produced by both types.

At the suggestion of Vice-Admiral Andrei Alexandrowitsch Popow , the twin towers of the Admiral Lazarev-class tank frigates were to be replaced by towers with a single 11 -inch cannon each. Since the 11-inch cannons M1877 were difficult to accommodate due to the space available in the towers of the three-tower armored frigates Admiral Lasarew and Admiral Greig and the two -tower armored frigates Admiral Spiridow and Admiral Tschitschagow , the artillery committee of the Naval Technical Committee decided to modify 11 -67 cannons there to use. Only the first gun of the Admiral Spiridow should not be exchanged. For this, the smaller gunboats were equipped with model 1877 cannons. Obviously, at least some of the equipment was converted to the 1877 model later, because the following equipment is specified for 1902:

  • 11 inch M1867 cannons:
    • Admiral Spiridow : 2 (originally Krupp)
    • Novgorod : 2
    • Wichr : 1
    • Grosa : 1 (stored)
  • 11 inch M1867 cannons:
    • Admiral Lazarev : 3
    • Admiral Greig : 3
    • Admiral Tschitschagow : 2
    • Burja : 1
    • Degree : 1

construction

The gun consisted of a tube that was reinforced with three layers of jacket rings. The weapon was a total of 6.104 m long, which corresponds to a length of 21.9 or rounded 22 calibers. To distinguish it from other types of the same caliber, the cannon is therefore also referred to in the literature as a 280/22 mm cannon . The part of the pipe provided with trains was 4.026 m long. In the weapons manufactured in the Obuchow works, the jacket rings were pulled forward to the mouth of the barrel. The tube had a total of 64 puffs with a depth of 1.77 mm. A prismatic wedge lock based on the Krupp system was used, which was identical to that of the 11-inch M1867 cannons . The breech alone weighed 1065 kg, the total weight of the weapon with the breech but without the mount was 28,698 kg.

For the gun, projectiles made of ordinary cast iron or chilled cast iron, each with two guide rings made of copper, were used. The weight of the grenade was between 250 and 255 kg. The length of the shells was 2.9 calibers. A shrapnel grenade was also available. Her coat was made of copper. The grenade had a weight of 228.5 kg and a length of 3.7 calibers and contained 91 bullets with a diameter of 71.4 mm each and a weight of 1.48 kg each.

The muzzle velocity was 454 m / s. With a barrel elevation of + 6 °, a firing range of 3477 m was achieved, with a barrel elevation of 27.7 ° a firing range of 8967 m.

For the guns, the mounts developed for the previous type were adopted.

Individual evidence

  1. ↑ see here: http://www.navy.su/navyarms/bronen/1877/11/11.htm , some other information can be found in the literature
  2. ↑ Since the production of the grenades was not yet standardized to the present day, the length and weight of the individual lots differ slightly.

literature

  • Р. М. Мельников: Башенные броненосные фрегаты , С-Петербург, 2002 (Russian)
  • Л. И. Амирханов: Артиллерия российских мониторов (Russian)

Web links