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13 Cards in this Set
- Front
- Back
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List components of sliding block |
Breech ring Breech block Breech mechanism gearing Extractors Devises limiting movement Safety arrangements |
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What are the 2 types of rifling |
Uniformed Varying |
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Define depth of ram |
From the breech face to the base of the projectile when the projectile is in the shot seating |
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Define ordnance |
A weapon system designed for artillery purposes in which explosive force is used to impart Direction, Momentum and stability to a projectile. The term is confined to Guns, howitzer and mortars all of which are ordnance. |
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Define shot seating |
The conical portion where the chamber diameter is reduced to join the rifled portion. The rifling is developed in the shot seating. |
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What are the types of breech ring |
Open Closed Tied |
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Requirements of Artillery |
Reactive Lethality Consistency Reliable Long range Cost effective High rate of fire Accuracy Manoeuvre Simple |
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Requirements if breech mechanism |
Safety Simple Speed and ease of operation Reliable |
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What is the purpose of the Muzzle Break |
Reduces rearward momentum of the recoil mass Lower trunnion pull and stabilise Acts as a flash eliminator |
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What are the functions of the fume extractor |
Evacuate the escaped propellant gases forward through the Muzzle Break rather than going through to the fighting compartment |
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What are the priorities of calibration |
Barrel wear measurement Instrumental Calibration Calibration fall of shot |
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Define Gun |
??? |
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Define howitzer |
?? |
