Difference between revisions of "14-in Mark X Torpedo (UK)"

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The '''14-in Mark X Torpedo''' was a British torpedo manufactured by the [[Royal Gun Factory]] at Woolwich.
 
The '''14-in Mark X Torpedo''' was a British torpedo manufactured by the [[Royal Gun Factory]] at Woolwich.
  
It was introduced into service production in 1898, building upon its very successful [[14-in R.G.F. Mark IX Torpedo|Mark IX predecessor]].{{ARTS1898|pp. vi-vii}}
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It was introduced into service production in 1898, building upon its very successful [[14-in Mark IX Torpedo (UK)|Mark IX predecessor]].{{ARTS1898|pp. vi-vii}}
  
It and the [[14-in Weymouth Mark I Torpedo|14-in Weymouth Mark I]] and a portion of the [[18-in R.G.F. Mark IV Torpedo]]es ordered in 1898 would be among the first to employ gyroscopes.
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It and the [[14-in Weymouth Mark I Torpedo|14-in Weymouth Mark I]] and a portion of the {{Torp|18-in Mark IV|UK}}es ordered in 1898 would be among the first to employ gyroscopes.
  
 
==Development and History==
 
==Development and History==
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Introduced in 1902.{{FC}}
 
Introduced in 1902.{{FC}}
  
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The design was submitted and agreed to after changes were applied in December 1891.  An overarching goal of the design was to incorporate lessons taken from manufacture of the new 178-in models.  The body shape was the same as in the [[14-in R.G.F. Mark VIII Torpedo|Mark VIII model]], but the tail fins were to be like those of the new 18-in long R.G.F. model which could better pass through nets.  Overall, its design was described as being different in 10 points from the Mark VIII's, and a pound lighter when charged (705 versus 706 pounds).{{ARTS1892|pp. 20-21}}
 
 
The Admiralty stressed there was no hurry to have this new torpedo, as the coming year's small order could just be more of the Mark VIII design.  They also asked that the idea of enlarging the warhead by fitting a bluffer head be considered, as these were proving the better shape anyway.  It was understood that this might increase weight to about 750 pounds.{{ARTS1892|p. 22}} 
 
 
They provided sketches of a model with these features with a warhead of 112 pounds.  Order and manufacture of two articles was made in 1892.{{ARTS1892|pp. 20-24}}
 
 
At the end of 1895, they were just ready to come into service. 
 
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===Particulars===
 
===Particulars===
 
The final design is laid out in the ''Annual Report of the Torpedo School, 1898''.{{ARTS1898|pp. 19-20}}
 
The final design is laid out in the ''Annual Report of the Torpedo School, 1898''.{{ARTS1898|pp. 19-20}}
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The diameter was precisely 14 inches, but the spec allowed 14.015 inches, uncharged, as a maximum.  It carried a charge of 79 pounds dry guncotton, 90 when wetted. 
 
 
With pistol but without air: weight 696 pounds, metacentric height 0.5 inches and C.G. 99.52 inches from end of screw shaft.  When charged with 28.5 pounds of air, C.G. is 100.43 inches from end of screw shaft.  The pistol projected 4.35 inches with a left-handed fan which was 5 inches tip-to-tip.  The warhead was cissoid shaped, 26.1 inches long, of sheet phosphor bronze, and weighed 122 pounds with its 90 pound wet guncotton charge.  An exercise head of the same shape, weight and metacentric height of 0.7 inches.  It could receive the same Holmes light as the R.G.F. Mark VIII weapons. 
 
 
Uncharged with pistol, it had a buoyancy of 11 pounds in fresh water.  When charged with 28.5 pounds of air with pistol, it was ballasted and adjusted to float horizontally and upright in salt water at a density of 1.026, at 60 degrees F.
 
 
The engines 40.884 H.P., delivering 1006 R.P.M. over a 600 yard run.  The top fin was 0.148 inches thick, the bottom 0.18 and the sides 0.155.  The two steel three-bladed propellors had increasing pitch, mean pitch of 36 inches.
 
 
The proof and passing tests were six runs  when charged to 1,350 psi:
 
* two runs from a submerged frame at target 600 yards distant
 
* two runs from an A.W. tube at least four feet above the water at a target 300 yards away
 
* one run above water at target 600 yards away
 
* one run from submerged frame at target 600 yards away
 
 
The limits of deviation permitted were:
 
* lateral deviation from the submerged frame must be less than 9 yards either way throughout run
 
* from A.W. tube, lateral deviation of 6 yards at 300 yards or 18 yards at 600 yards
 
* deviation from set depth not to exceed +/- 18 inches
 
 
The speeds required were:
 
* not less than 27 knots in 60 degrees and warmer
 
* not less than 26.5 knots in 50-60 degrees
 
* at least 26 knots in water colder than 50 degrees
 
 
Endurance was tested in just one torpedo in a batch of twenty, after passing the above tests:
 
# make six short runs from above water gun 10 feet or more above water
 
# be fired from submerged frame and pass within 10 yards of target at 600 yards
 
# it must then "shew no signs of weakness or distortion"
 
  
Lastly, one torpedo of every ten was to be tested for interchangeability.
 
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==Manufacture and Use==
 
==Manufacture and Use==
 
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Revision as of 21:18, 30 November 2012

The 14-in Mark X Torpedo was a British torpedo manufactured by the Royal Gun Factory at Woolwich.

It was introduced into service production in 1898, building upon its very successful Mark IX predecessor.[1]

It and the 14-in Weymouth Mark I and a portion of the 18-in Mark IV torpedoes ordered in 1898 would be among the first to employ gyroscopes.

Development and History

It was referred to the "E" Design of several candidates covered in the Annual Report of the Torpedo School. 1897 which sought to discover the best combination of components.[2]

Mark X*

Introduced in 1902.[Fact Check]

Particulars

The final design is laid out in the Annual Report of the Torpedo School, 1898.[3]

Manufacture and Use

1898

Fifty are ordered and are under manufacture at Woolwich.[4]

Footnotes

  1. Annual Report of the Torpedo School, 1898. pp. vi-vii.
  2. Annual Report of the Torpedo School, 1898. p. 19.
  3. Annual Report of the Torpedo School, 1898. pp. 19-20.
  4. Annual Report of the Torpedo School, 1898. p. 19.

Bibliography

See Also