Английская Википедия:12-inch/40-caliber gun

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Версия от 07:15, 18 декабря 2023; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Infobox weapon |name=12"/40 caliber Mark 3 and Mark 4 |image=USS Ohio (BB-12) 12-inch 40 cal guns.jpeg |image_size = 300px |alt=12"/40 guns of the ship's forward gun turret, photographed circa 1907-1908. Note Sailors strolling on deck; bell mounted on the pilothouse face; and 3-pounder guns mounted on the superstructure. |caption=View of {{USS|Ohio|BB-12|2}} and her forward 12"/40 ca...»)
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Шаблон:Infobox weapon

The 12"/40 caliber gun (spoken as "twelve-inch-forty--caliber") were used for the primary batteries of the United States Navy's last class of monitors and the Шаблон:Sclass and Шаблон:Sclass pre-dreadnought battleships.Шаблон:Sfn

Design

The Шаблон:Convert/40 caliber gun was developed after the Spanish–American War to use the new smokeless powder that had recently been adopted by the Navy. The Mark 3, gun Nos. 15–48 and 50–56, was constructed of tube, jacket, and eight hoops. It was found that the early guns suffered from excessive bore erosion, in an attempt to fix this the Navy reduced the propellant charges to reduce the muzzle velocity, because of this the Mark 4, gun Nos. 49, 58–60, 150–154, and 179, was similar to the Mark 3 but with a smaller chamber for the reduced propellant charge.Шаблон:SfnШаблон:Sfn

Service history

The guns mounted in the Virginia-class battleships were in an unusual two-level turret with the [[8"/45 caliber gun|Шаблон:Convert/45 caliber guns]] on top of the larger 12-inch guns. This arrangement ultimately proved unsuccessful but helped the Navy in the successful development of superfiring turrets later used in the dreadnought Шаблон:USS.Шаблон:Sfn

Incident

Gun No. 49, while testing powder at the Naval Proving Ground, had the entire muzzle and chase blow off. The board appointed to investigate came to the conclusion that the new powder, while performing properly, caused a pressure along the chase that was dangerously close to the strength curve. It was decided that when the guns were withdrawn to be relined they would add an additional hoop that extended to the muzzle would be placed on the chase.Шаблон:Sfn

Naval Service

Ship Gun Installed Gun Mount
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 1 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 1 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 1 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 1 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 2 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 2 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 4: 2 × twin turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 5: 2 × dual-caliber turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 5: 2 × dual-caliber turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 5: 2 × dual-caliber turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 5: 2 × dual-caliber turrets
Шаблон:USS Mark 3 or 4: 12"/40 caliber Mark 5: 2 × dual-caliber turrets

Notes

Шаблон:Reflist

References

Шаблон:Refbegin

Books
Online sources

Шаблон:Refend

External links

Шаблон:Portal bar

Шаблон:WWIUSNavalWeapons

Шаблон:Commons category

Шаблон:Use dmy dates

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