Often times, looks can be deceiving.
This is the barrel of a ukrainian T-64BV. No, it's not damaged and does not require a replacement.
This is a 'bore evacuator', also known as a 'fume extractor'. What is it for and how does it work? ⬇️
#UkraineWar #UkraineRussiaWar #Ukraine
A bore evacuator creates a pressure differential in order for the toxic fumes created by firing a shell to leave through the barrel.
No crew member wants a puff of toxic gas when the breech opens!
It is thin and surrounds a part of the barrel that has holes in it.
The bore evacuator can be seen at work when a tank fires a shell. The toxic gas (a white plume of smoke) can be seen leaving the barrel AFTER the shell has already been fired.
Every modern tank has one. It usually appears as a "bump" in the barrel, a portion of bigger diameter.
An M1A2 Abrams, with and without its bore evacuator:
Original video:
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