QF 4 inch Mk V ( eng. Rapid-fire 4-inch gun of the fifth model ) - 102-mm British ship gun of the times of the First and Second World Wars. Initially, it was intended only for firing at surface targets, but already during World War I, anti-aircraft installations were developed on its basis, which were also used on land. It was also used as a coastal defense weapon.
| 4 "naval gun Mk V | |
|---|---|
| QF 4 inch Mk V naval gun | |
 4-inch guns of the Australian cruiser Sydney | |
| Production history | |
| Country of Origin |  United Kingdom |
| Made, units | 944 |
| Service History | |
| Years of operation | 1914-1940s |
| It was in service |  United Kingdom |
| Wars and conflicts | World War I , World War II |
| Gun characteristics | |
| Gun brand | Mk v |
| Caliber mm | 102 |
| Barrel length, mm / calibres | 4800/45 [1] |
| Barrel length, mm | 4600 [1] |
| Shutter type | horizontally sliding |
| Barrel weight with a bolt, kg | 2220 |
| Projectile weight, kg | 14.1 |
| The initial velocity of the projectile, m / s | 716 |
| Rate of fire rounds per minute | 10-15 |
| Gun mount specifications | |
| The total mass of the AC, kg | 3,172 |
| Trunk angle, ° | from –5 ° to + 80 ° |
| Maximum firing range, m | 15,000 |
| Reach in height, m | 8800 |
Content
- 1 Design
- 2 Use
- 2.1 Naval artillery
- 2.2 Anti-aircraft artillery of the ground forces
- 2.3 Coastal guns
- 3 Used shells
- 4 Efficiency against aviation
- 5 See also
- 6 notes
- 7 Literature
- 8 References
Design
The barrel of the gun - a "wire" design, along the entire length was enclosed in a casing and had an internal liner . In later versions of the gun, the replacement of the liner could be done on board the ship. The shutter is horizontally sliding [2] . Trunk balancing is natural.
Usage
According to Tony Didzhulian, 107 guns of the early versions were used by ground forces in the First World War. For the fleet, 554 guns of the early Mk V variant were built and 283 guns of the Mk VC variant used in the Second World War [2] .
Naval artillery
4 inch Mk V type gunThe QF was faster than the 4-inch Mk VII gun of type BL . It first appeared in 1914 as a secondary armament of light cruisers of the Aretyusa type , and was soon adapted to combat aircraft by increasing the elevation angle . The gun was used mainly on cruisers and heavier ships (for example, the KVMS Australian cruiser Sydney , the New Zealand KVMS cruiser Loch Morlich ). Since 1917, it was also installed on destroyers of types “V” and “W” [2] , later from small vessels, they were equipped with Abdiel-type mine loaders , destroyers of types "J", "K" and "N" , sloops of the type "Kingfisher" and others .
In the 1930s, the 4-inch Mk V gun was replaced by a similar Mk XVI gun , which began to be installed on new ships. On the old guns, the Mk V continued its service during World War II [2] . To this day, preserved guns of the New Zealand cruiser "Loch Morlich", located on the main base of the New Zealand Navy Devonport in auckland .
Ground defense artillery
Some anti-aircraft guns were used to protect important objects from enemy air raids during the First World War. They were installed on stationary platforms and showed good results when using unitary shells (instead of separate loading), which led to the further spread of their application. The elevation of the gun reached 80 °, but loading could be carried out at an elevation of not more than 62 °, which reduced the practical rate of fire of the gun [3] . By the end of World War I, there were 24 such guns in Great Britain, and in France - 2. After the war, the guns were returned to the fleet [4] .
Coastal Defense Tools
From 1915 to 1928 several guns were installed in forts to protect the estuary of the Humber River [5] .
Used Shells
The guns of the early model with a low elevation angle had a separate-shell charge. By the time of World War II, most guns used unitary shots [2] .
Efficiency Against Aviation
The table shows the characteristics of British anti-aircraft guns [6] :
| Gun | Initial speed, m / s | Projectile weight, kg | Climbing time 1500 m at an angle of 25 °, s | Climbing time 3000 m at an angle of 40 °, s | Climbing time 4600 m at an angle of 55 °, s | Maximum height, m [7] |
| QF 13 pdr 9 cwt | 607 | 5.67 | 10.1 | 15,5 | 22.1 | 5790 |
| QF 12 pdr 12 cwt | 671 | 5.67 | 9.1 | 14.1 | 19.1 | 6100 |
| QF 3 inch 20 cwt 1914 | 762 | 5.67 | 8.3 | 12.6 | 16.3 | 7160 |
| QF 3 inch 20 cwt 1916 | 610 | 7.26 | 9.2 | 13.7 | 18.8 | 6710 [8] |
| QF 4 inch Mk V (PMV) | 716 | 14.1 (3 crh) | 4.4 ?? | 9.6 | 12.3 | 8760 |
| QF 4 & inch Mk V (WWII) [9] | 716 | 14.1 (4.38 / 6 crh) | ? | ? | ? | 9450 |
See also
- 10.5 cm SK L / 45
Notes
- ↑ 1 2 Hogg & Thurston 1972, Page 101
- ↑ 1 2 3 4 5 Tony DiGiulian. British 4 "/ 45 (10.2 cm) QF Mark V and Mark XV (January 13, 2008). Date of access March 29, 2008.
- ↑ Hogg & Thurston 1972, Page 100
- ↑ Routledge 1994, Page 27
- ↑ Hogg & Thurston 1972, Page 98
- ↑ Routledge 1994, Page 9
- ↑ Hogg & Thurston 1972, Page 234–235
- ↑ Routledge 1994, Page 13
- ↑ WWII details from Tony DiGiulian's website
Literature
- Tony DiGiulian, British 4 "/ 45 (10.2 cm) QF Mark V and Mark XV
- IV Hogg & LF Thurston, British Artillery Weapons & Ammunition 1914-1918. London: Ian Allan, 1972.
- Brigadier NW Routledge, History of the Royal Regiment of Artillery. Anti-Aircraft Artillery, 1914-55. London: Brassey's, 1994. ISBN 1-85753-099-3