High-explosive incendiary/armor-piercing ammunition (HEIAP) is a form of shell which combines armor-piercing capability and a high-explosive effect. In this respect it is a modern version of an armor-piercing shell. The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI) Typical of a modern HEIAP shell is the Raufoss Mk 211 designed for weapons such as heavy machine guns and anti-materiel rifles. Larger guns such as the British 30 mm RARDEN cannon fire APSE (armor-piercing special effects) shells, which are armor-piercing rounds with added HE effects.
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| - High-explosive incendiary/armor-piercing ammunition (en)
- HEIAP (ja)
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| - HEIAP（High Explosive Incendiary/Armor Piercing Ammunition）は、徹甲弾、榴弾、焼夷弾の三つの機能を持った弾頭である。別名Semi-armor piercing high explosive incendiary（SAPHEI）とも呼ばれている。 この弾頭の主な使用目的は装甲目標の破壊であり、直撃したときにのみ、その特殊な効果が発揮される。着弾時に先端部が焼夷剤に火をつけ、爆薬の起爆を誘発させる。ここまでは通常の榴弾と変わらないが、第2の焼夷弾薬であるジルコニウム粉にも火をつける。これは非常に高い温度で燃えて簡単に消えないという特徴を持ちつつ、約30秒間燃え続ける焼夷弾薬であり、高い焼夷効果を発揮する。さらに砲弾内部のタングステン弾芯が標的の装甲を貫通し内蔵されている炸薬に点火し被害を拡大させるというものである。 対物ライフル用のRaufoss Mk 211から30ミリ機関砲用までさまざまなサイズがある。 (ja)
- High-explosive incendiary/armor-piercing ammunition (HEIAP) is a form of shell which combines armor-piercing capability and a high-explosive effect. In this respect it is a modern version of an armor-piercing shell. The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI) Typical of a modern HEIAP shell is the Raufoss Mk 211 designed for weapons such as heavy machine guns and anti-materiel rifles. Larger guns such as the British 30 mm RARDEN cannon fire APSE (armor-piercing special effects) shells, which are armor-piercing rounds with added HE effects. (en)
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| - High-explosive incendiary/armor-piercing ammunition (HEIAP) is a form of shell which combines armor-piercing capability and a high-explosive effect. In this respect it is a modern version of an armor-piercing shell. The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI) Typical of a modern HEIAP shell is the Raufoss Mk 211 designed for weapons such as heavy machine guns and anti-materiel rifles. The primary purpose of these munitions is armor penetration with better beyond-armor effects. Similarly to SLAP rounds (saboted light armor penetrator) which get their armor-piercing ability from the propulsion of a 7.62 mm tungsten heavy alloy bullet from a 12.7 mm barrel (.50 caliber) using a sabot with much more energy than is usually possible from a 7.62 mm round, HEIAP munitions utilize a similar theory with an added explosive effect at the end. The special effect is developed when the round strikes the target. The initial collision ignites the incendiary material in the tip, triggering the detonation of the HE charge. The second (zirconium powder) incendiary charge will also ignite. This burns at a very high temperature, is not easily extinguished, and can last up to 15 minutes. The remaining element of the round is the tungsten carbide penetrator. This has a large amount of kinetic energy and will penetrate the armor as a solid-cored armor-piercing shot would. This takes the incendiary material and about 20 steel fragments (created by the explosives), delivering them in a 25–30 degree cone through the armor, increasing lethality. The triggering of the explosive charge is dependent upon the resistance of the target. If the target offers little resistance then the lack of frictional heating will prevent the incendiary from igniting and the high explosive from detonating. Larger guns such as the British 30 mm RARDEN cannon fire APSE (armor-piercing special effects) shells, which are armor-piercing rounds with added HE effects. (en)
- HEIAP（High Explosive Incendiary/Armor Piercing Ammunition）は、徹甲弾、榴弾、焼夷弾の三つの機能を持った弾頭である。別名Semi-armor piercing high explosive incendiary（SAPHEI）とも呼ばれている。 この弾頭の主な使用目的は装甲目標の破壊であり、直撃したときにのみ、その特殊な効果が発揮される。着弾時に先端部が焼夷剤に火をつけ、爆薬の起爆を誘発させる。ここまでは通常の榴弾と変わらないが、第2の焼夷弾薬であるジルコニウム粉にも火をつける。これは非常に高い温度で燃えて簡単に消えないという特徴を持ちつつ、約30秒間燃え続ける焼夷弾薬であり、高い焼夷効果を発揮する。さらに砲弾内部のタングステン弾芯が標的の装甲を貫通し内蔵されている炸薬に点火し被害を拡大させるというものである。 対物ライフル用のRaufoss Mk 211から30ミリ機関砲用までさまざまなサイズがある。 (ja)
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