Why do modern tanks not have muzzle breaks?

[ImperialForce9]

Stuff like Abrams, T-62's, Challenger tanks (I'm not a tank expert so do correct me if I'm wrong) noticeably do not have them.

[Rumpelcrutchskin]

Modern MBTs don`t really need them anymore because they mainly use apfsds rounds that have a casing that gets discarded after leaving the barrel.
Also their recoil mechanisms are lot better designed now then back in the days reducing the need for it even further.

[ImperialForce9]

Escrito originalmente por Rumpelcrutchskin:

Modern MBTs don`t really need them anymore because they mainly use apfsds rounds that have a casing that gets discarded after leaving the barrel.
Also their recoil mechanisms are lot better designed now then back in the days reducing the need for it even further.

How about the smoke generated from firing?

[Rumpelcrutchskin]

Escrito originalmente por ImperialForce9:

Escrito originalmente por Rumpelcrutchskin:

Modern MBTs don`t really need them anymore because they mainly use apfsds rounds that have a casing that gets discarded after leaving the barrel.
Also their recoil mechanisms are lot better designed now then back in the days reducing the need for it even further.

How about the smoke generated from firing?

Doubt they really care much about that anymore with the firing distances, modern optics and thermals that can cut through smoke, low visibility and bad weather conditions.

[Basho]

Escrito originalmente por ImperialForce9:

Escrito originalmente por Rumpelcrutchskin:

Modern MBTs don`t really need them anymore because they mainly use apfsds rounds that have a casing that gets discarded after leaving the barrel.
Also their recoil mechanisms are lot better designed now then back in the days reducing the need for it even further.

How about the smoke generated from firing?

thats what the bore evacuator is for (the bump on the barrel).
as for visibility, as pointed out, thats not really a concern or something that can be negated in a practical manner (and a muzzle break does little to change anything in that respect).

also worth pointing out regarding the discarding sabots (APFSDS) in case it wasnt obvious: a muzzle break can interfere with the sabots, knocking the projectile off course and/or getting stuck, damaging things, etc.

also worth a mention is the fact that modern tank guns are not rifled either, the projectiles themselves are (fin) stabilized mostly.
in addition, a smooth bore allows for firing various rockets (such as some ATGMs) out of the gun in cases where this is applicable (not all tanks use this).

[zaphodikus]

You people know far too much about big guns. Ha ha.

[Rumpelcrutchskin]

Escrito originalmente por zaphodikus:

You people know far too much about big guns. Ha ha.

Almost 7000 hours of War Thunder.

[zaphodikus]

That explains a lot. Gotta love the digital world we live in now.
Shades of Enders Game.

[nullpo]

current rounds is so powerful the air from the muzzle break actually harms friendlies near eat. Even the firefly don't have it in ww2

[Pocahawtness]

Apparently ( I googled this so I don't know why you didn't, lol ) the muzzle break interferes with the sabot, which tends to catch in the break. This makes the shell significantly less accurate. Since tanks frequently use that type of ammo ( and not field guns ) that's why the difference.

[ImperialForce9]

So I'm guessing that Sabots are main use against other tanks?

[Out Of Bubblegum]

Escrito originalmente por ImperialForce9:

So I'm guessing that Sabots are main use against other tanks?

You did not look up apfsds?

[ImperialForce9]

Escrito originalmente por Out Of Bubblegum:

Escrito originalmente por ImperialForce9:

So I'm guessing that Sabots are main use against other tanks?

You did not look up apfsds?

I got no idea what that means other than it being an abbreviation a tank round type.

[Out Of Bubblegum]

Escrito originalmente por ImperialForce9:

Escrito originalmente por Out Of Bubblegum:

You did not look up apfsds?

I got no idea what that means other than it being an abbreviation a tank round type.

Rumple was good enough to tell you about them. And you could know. You could.

[Rumpelcrutchskin]

Escrito originalmente por ImperialForce9:

I got no idea what that means other than it being an abbreviation a tank round type.

Armor-piercing fin-stabilized discarding sabot.
It`s basically big solid metal dart that is surrounded by casing to help it propel through the barrel and casing gets discarded once it leaves the barrel.
It has very high velocity compared to regular tank rounds and punches through the tank armor.

[Bergman]

Escrito originalmente por ImperialForce9:

Stuff like Abrams, T-62's, Challenger tanks (I'm not a tank expert so do correct me if I'm wrong) noticeably do not have them.

Most use subcaliber ammunition nowadays, so no need for a muzzlebreak (they are even smoothbore)