Difference between revisions of "Repeater"
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[[File:DirectorFiringHandbook1918DirectorFiringHandbook1918_Plate33.jpg|thumb|360px|'''The Repeater'''<ref>Admiralty. ''Dreyer Table Handbook, 1918'', Plate 33.</ref><br>Xerox copy thanks to Bill Schleihauf. ]] | [[File:DirectorFiringHandbook1918DirectorFiringHandbook1918_Plate33.jpg|thumb|360px|'''The Repeater'''<ref>Admiralty. ''Dreyer Table Handbook, 1918'', Plate 33.</ref><br>Xerox copy thanks to Bill Schleihauf. ]] | ||
| − | '''The Repeater''' was a British fire control data receiver placed in [[Control Position|control positions]] aloft and in the [[Gun Control Tower]] | + | '''The Repeater''' was a British fire control data receiver placed in [[Control Position|control positions]] aloft and in the [[Gun Control Tower]]{{DreyerH|p. 70}} which displayed the enemy's relative course and inclination to the line of fire, enemy speed and [[Range Rate|range rate]] in use on the [[Dreyer Fire Control Table]].{{DreyerH|p. 8}} |
| − | These were likely used only in ships carrying Mark IV and Mark IV* Dreyer tables, as these were the only ones featuring [[Electrical Dumaresq]]s with commutators in their unique centreworks to transmit enemy speed and inclination. | + | These were likely used only in ships carrying [[Dreyer Table Mark IV|Mark IV]] and [[Dreyer Table Mark IV*|Mark IV*]] and [[Dreyer Table Mark V|Mark V Dreyer tables]], as these were the only ones featuring [[Electrical Dumaresq]]s with commutators in their unique centreworks to transmit enemy speed and inclination.{{DreyerH|p. 76. Plate 25}} |
| + | |||
| + | The Dreyer Handbook alludes to a "rate transmitter on the Dreyer table"{{DreyerH|p 76}} providing the range rate signals, but none of its descriptions of the various tables allude to such a transmitter. They could have been bulkhead-mounted transmitters or one within electrical dumaresqs and their underslung range clocks. | ||
| + | |||
| + | The plate showing the device indicates that:{{DreyerH|Plate 25}} | ||
| + | * enemy speed was shown in knots by a cyclometric display | ||
| + | * enemy's relative course by a rotating pointer against inner ring | ||
| + | * enemy's inclination, by same pointer against outside ring | ||
| + | * range rate in yards per minute, up to +/- 2200 , seemingly by 25s | ||
==See Also== | ==See Also== | ||
| + | {{refbegin}} | ||
*[[Dreyer Fire Control Table]] | *[[Dreyer Fire Control Table]] | ||
| + | {{refend}} | ||
==Footnotes== | ==Footnotes== | ||
| Line 12: | Line 22: | ||
==Bibliography== | ==Bibliography== | ||
{{refbegin}} | {{refbegin}} | ||
| − | *{{ | + | *{{DreyerH}} |
{{refend}} | {{refend}} | ||
[[Category:Fire Control]] | [[Category:Fire Control]] | ||
[[Category:Shipboard Equipment]] | [[Category:Shipboard Equipment]] | ||
Latest revision as of 01:34, 29 December 2014
The Repeater was a British fire control data receiver placed in control positions aloft and in the Gun Control Tower[2] which displayed the enemy's relative course and inclination to the line of fire, enemy speed and range rate in use on the Dreyer Fire Control Table.[3]
These were likely used only in ships carrying Mark IV and Mark IV* and Mark V Dreyer tables, as these were the only ones featuring Electrical Dumaresqs with commutators in their unique centreworks to transmit enemy speed and inclination.[4]
The Dreyer Handbook alludes to a "rate transmitter on the Dreyer table"[5] providing the range rate signals, but none of its descriptions of the various tables allude to such a transmitter. They could have been bulkhead-mounted transmitters or one within electrical dumaresqs and their underslung range clocks.
The plate showing the device indicates that:[6]
- enemy speed was shown in knots by a cyclometric display
- enemy's relative course by a rotating pointer against inner ring
- enemy's inclination, by same pointer against outside ring
- range rate in yards per minute, up to +/- 2200 , seemingly by 25s
See Also
Footnotes
- ↑ Admiralty. Dreyer Table Handbook, 1918, Plate 33.
- ↑ Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. p. 70.
- ↑ Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. p. 8.
- ↑ Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. p. 76. Plate 25.
- ↑ Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. p 76.
- ↑ Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. Plate 25.
Bibliography
- Admiralty, Gunnery Branch (1918). Handbook of Captain F. C. Dreyer's Fire Control Tables, 1918. C.B. 1456. Copy No. 10 at Admiralty Library, Portsmouth, United Kingdom.
