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[Légi Harcászati / Légvédelmi FAQ]
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#75479
Például itt is (47. oldal):
http://www.mediafire.com/download/pdi8bkzp2jar5f2/MBTs.pdf
SPOILER! Kattints ide a szöveg elolvasásához!It is not a common knowledge, and is somewhat unexpected for an APFSDS-centered anti-armor school of thought of today, but originally HEAT-FS rounds were the principal 125mm anti-armor ammunition. In fact, the original 125mm 2A26 (D-81) gun was accepted for T-64A MBT as a result of an emergency uparming procedure, exactly thanks to its greater HEAT potential. Indeed, original 125mm HEAT rounds outperformed their APFSDS counterparts by nearly 25%, penetrating over 400mm RHA and ensuring defeat of all contemporary MBTs at any point of impact. APFSDS rounds, on the contrary, were few in the Soviet tanks layout, and were only intended for short-range engagements. Even now HEAT rounds account for 45% of standard tank loadout.
HEAT-FS rounds were also substantially more accurate than APFSDS (which might also be surprising to a Western reader). This is reflected in the Soviet deviation criterion, which was more strict for HEAT rounds (0.21 mil) than for APFSDS rounds (0.25 mil). However, in practice HEAT-FS rounds were even more accurate. As control trials of a random mass-production T-64A held in the 70s (the details of which were made available to the author) indicated, while APFSDS rounds hugged the outer bounds of acceptance criterion, HEAT-FS rounds actually demonstrated the average deviation of well under 0.1 mil!
The advent of advanced armor arrays decreased the effectiveness of HEAT ammunition, and the advance of APFSDS technology and their flatter trajectory and shorter time to target have relegated HEAT ammunition to the secondary role in tanks loadout. However, in latest years, HEAT penetrating potential was boosted by ingenious tandem warhead designs, as well as introduction of unconventional metal liners (DU, tantalum, etc.), that, theoretically, substantially degrade the performance of advanced armor arrays, in addition to having improved behind-armor effects.