samedi 5 janvier 2019

Of tanks and decapping plates

Those of you who are into warships too, will probably be familiar with the concept of a decapping plate. The short and skinny is that if you have a plate of homogenous steel or even iron that is 0.0805 times or higher of the incoming calibre, it will remove any balistic cap on the round.

Now the concept was obviously well known to all the major nations involved in WW2, seein' as they also had a navy. However it doesn't seem to be used much on tanks.

Mind you, there are a few examples, such the side skirts on the later Panthers, which at 4mm thickness would reliably decap a Soviet 45mm round. (So yeah, they weren't just against AT rifles.) But most tanks only get into spaced armour at all by the time the PIAT and Panzerfaust and such get used, and even then it's sometimes just mesh screens against those and with no real decapping ability against AT rounds in use at the time.

So that would be my question for the more learned people here: why wasn't it used more? Were ballistic caps on AT rounds uncommon in WW2, or what is the reason?


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