Glossary : Différence entre versions
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| '''APSB''' - ''Armor Piercing, Squeeze-Bore'', ammunition for conical/squeezebore/taper-bore guns. A penetrator is surrounded by a jacket of light, soft metal, which is squeezed by the conical portion of gun bore. this served to achieve very high muzzle velocities - comparable with APCR or APDS - while reducing the main problem of APCR, ie high drag. However it also presented large problems with gun barrel wear, as the conical part was hard to produce and had to be replaced very often. This, along with need for rare metals for the ammunition and with serious limit of other uses of the gun due to difficulties with HE ammunition, lead to suspension of the concept except specialised units, where light weight was critical, such as German 28mm sPzB.41 or British Littlejohn adapter for 2 pdr gun. | '''APSB''' - ''Armor Piercing, Squeeze-Bore'', ammunition for conical/squeezebore/taper-bore guns. A penetrator is surrounded by a jacket of light, soft metal, which is squeezed by the conical portion of gun bore. this served to achieve very high muzzle velocities - comparable with APCR or APDS - while reducing the main problem of APCR, ie high drag. However it also presented large problems with gun barrel wear, as the conical part was hard to produce and had to be replaced very often. This, along with need for rare metals for the ammunition and with serious limit of other uses of the gun due to difficulties with HE ammunition, lead to suspension of the concept except specialised units, where light weight was critical, such as German 28mm sPzB.41 or British Littlejohn adapter for 2 pdr gun. | |||
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| '''HE''' - ''High Explosive'', generally used term for any shell whose primary damage mechanism comes from an explosion of its charge, as opposed to kinetic damage done by AP shells. There are multiple kinds of HE projectile, the most often used is probably ''HE-Frag''. In its basic sense, pure HE shell would have only thin walls and would create little fragmentation, relying on blast to do the damage - thus, HE shells were often designed against hardened positions etc. However, practice showed that HE-Frag can be almost as effective as pure HE, while having more effect against soft targets, and as He-Frag took over the role, it took over the designation as well. | '''HE''' - ''High Explosive'', generally used term for any shell whose primary damage mechanism comes from an explosion of its charge, as opposed to kinetic damage done by AP shells. There are multiple kinds of HE projectile, the most often used is probably ''HE-Frag''. In its basic sense, pure HE shell would have only thin walls and would create little fragmentation, relying on blast to do the damage - thus, HE shells were often designed against hardened positions etc. However, practice showed that HE-Frag can be almost as effective as pure HE, while having more effect against soft targets, and as He-Frag took over the role, it took over the designation as well. | |||
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| '''HEAT''' - ''High Explosive, Anti-Tank'', armor-piercign projectiles using hollow charge effect. Cup-shaped charge forms a thin jet of gases or of HEAT liner material, that travels at very high velocity. Contrary to kinetic energy AP, HEAT maintains the same penetration regardless of the shell velocity, so it was a popular choice for low-velocity guns and howitzers. However, WWII HEAT was often prone to failure and had usually short range. On the other hand it was cheap to produce - by the war's end, Geman tanks often carried a significant portion of their ammunition load in HEAT, replaing both AP and HE shells. | '''HEAT''' - ''High Explosive, Anti-Tank'', armor-piercign projectiles using hollow charge effect. Cup-shaped charge forms a thin jet of gases or of HEAT liner material, that travels at very high velocity. Contrary to kinetic energy AP, HEAT maintains the same penetration regardless of the shell velocity, so it was a popular choice for low-velocity guns and howitzers. However, WWII HEAT was often prone to failure and had usually short range. On the other hand it was cheap to produce - by the war's end, Geman tanks often carried a significant portion of their ammunition load in HEAT, replaing both AP and HE shells. | |||
| ? | ''' | + | '''Hlgr''' - ''Hohlladunggranate'', German designation for ''HEAT''. | |
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| '''HVAP''' - ''High Velocity Armor Piercing'', US designation for ''APCR'' projectiles. | '''HVAP''' - ''High Velocity Armor Piercing'', US designation for ''APCR'' projectiles. | |||
| ? | ''' | + | '''Pzgr''' - ''Panzergranate'', German designation of kinetic energy (''AP'') projectiles. Usual designation for most frequently used shells was Pzgr.39 (''APCBC'') and Pzgr.40 (''APCR''). | |
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| ? | ''' | + | '''Sprgr''' - ''Sprenggranate'', German designation for ''HE'' or ''HE-Frag'' shells. | |
| ? | '''Subcaliber''' | + | '''Subcaliber''' - General designation for any shell or shot whose diameter (or diameter of the penetrator) is significantly smaller than the caliber. Generally in game you can encounter ''APCR'' and ''HVAP'' projectiles. | |
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Version du 28 avril 2011 à 21:15
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