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2 minutes ago, Sovngard said:

A thermal shroud doesn't have a structural purpose.

 

Yes but I guess it was the word @Serge was looking for.

Though I agree that the thing on the barrel of the Lynx isn't a thermal shroud per se, no idea if there is actually a word for that.

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1 hour ago, Alzoc said:

 

Yes but I guess it was the word @Serge was looking for.

Though I agree that the thing on the barrel of the Lynx isn't a thermal shroud per se, no idea if there is actually a word for that.

It’s like a « manchon anti-arcure. »

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22 minutes ago, Serge said:

It’s like a « manchon anti-arcure. »

 

Thermal sleeve: moderates and disperses heat evenly around the gun barrel to prevent warping. 

 

A thermal sleeve usually is in contact (or very close) with the gun barrel, but the shroud of the lynx looks to be a few cm away from the barrel, weird. 

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   Nothing unusual about that support sleeve, helps taking some of vibrations from gun barrel and keep it closer to supposed aiming point during rapid fire. it is not a thermal shroud or anything like that. It doesn't usually help to cool gun faster (usually they are doing opposite, creating an obsticle for air).

   I think "gun barrel support sleeve" can be used to call that thing until somebody with better knowledge of english terminology can give proper answer of name of that part.

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2 hours ago, Lord_James said:

 

Thermal sleeve: moderates and disperses heat evenly around the gun barrel to prevent warping. 

 

A thermal sleeve usually is in contact (or very close) with the gun barrel, but the shroud of the lynx looks to be a few cm away from the barrel, weird. 

Yes. 

But heavy barrel’s thermal sleeve must be kept light. The goal is to reach an homogeneous temperature around the barrel.

The barrel case of the Lance turret help to keep the temperature homogeneous. 

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The heterogeneous heating of gun barrels is primarily due to sunlight (as the heat from firing is evenly distributed around the circumference), so it's odd to see a thermal shroud with holes in (which would allow sunlight onto the barrel, especially the holes in the top). The shape is also inefficient as a thermal shroud, normally they're wrapped tighter around the gun to minimise the extra weight. My money's on it being a structural support only

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1 hour ago, Serge said:

The barrel MUST be free floating. Otherwise, you change the ballistic. 

 

This isn't a small arm where the user is leaning the handguards on walls and such, so you don't need to isolate the barrel from any loads applied to the firearm structure. The ballistics in this case are going to be dependant on the barrel harmonics (i.e. where the nodes & antinodes are), and using the structure to force a node right by the end of the barrel should improve the shooting consistency.

 

34 minutes ago, Willy Brandt said:

its free floating.

 

It's not a thermal shroud (due to the holes), and it's not to reduce radar cross-section (also due to the holes) - the only other use left is structure, and cutting holes in a structure like that is a good way to improve the mass efficiency.

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Quote

Poland interested in joining Franco-German Main Ground Combat System programme

Remigiusz Wilk, Warsaw - Jane's Defence Weekly
23 August 2019
 

Polish Minister of National Defence Mariusz Błaszczak and his German counterpart, Annegret Kramp-Karrenbauer, met in Berlin on 16 August to discuss European projects, military co-operation, and NATO's Multinational Division North East, among other topics.

Błaszczak said after the meeting, "We talked about the Franco-German tank project, which is at an initial stage. We would like the initiative to be accelerated and notified under PESCO [the EU's Permanent Structured Cooperation] projects and also reinforced by European Union funding. It would be a good solution for the Polish defence industry."

He was referring to the Main Ground Combat System (MGCS), which is intended to replace Leopard 2 and Leclerc tanks in about 2035.

 

Source: https://www.janes.com/article/90641/poland-interested-in-joining-franco-german-main-ground-combat-system-programme

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1 hour ago, Clan_Ghost_Bear said:

 

Isn't he from Poland? Why would he be unhappy about this

 

Damian hates Germany, and is a US fanboy.

 

I believe he also is against the EU, but I may be wrong on that. 

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1 hour ago, Clan_Ghost_Bear said:

Isn't he from Poland? Why would he be unhappy about this

The guy loves the Abrams so much that he would marry one if he could... On a different forum he did a "hate campaign" against Leopard-2 before he was banned permanently. Now imagine his face after reading this article :D  

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First I thank @SH_MM for tracing MGCS. In may opinion the Polish are welcome to the program but not in this stage. In the beginning of the technology demonstrator study phase Polish industry would not be required at all. They want to make quick business. But may be that the research establishment WITU would be welcome to participate with their technology ideas. @Militarysta what is your opinion to this?

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My all dear friends,

first of all - polish MoD mr Błaszczak is lying when he only open his mounth. The same PiS (Law and Justice party) goverment. This is faritails propose only by parlement election this outum in Poland. They will be no new tank in possible to recoginze future in Poland - 2PL, 2A5 after small upgrade and just refresh T-72M1 and thats all. Poland will take Finish 2A6 and Protugaleese if those countres will sell those tanks. And thats all. You must understand that this goverment is lying whole time and sucht "declaracton of interest" is only bubble talks to deluge all around - german partenrs, EU industry, polish soliders and...people before parlament election. Whole goverment narration is about "building strong army" whit 4th division, unit deploy to est, taking US forcet to Poland and tehnical modernisation of the Polish Army. Inn all aspect is low-cost shit. Sorry for talk this straight. In case tanks - all buble talk about "super duper IVgen German-French=Polish tank"  is only to deluge that will be done more then...to small refresh 230 T-72M1 and 148 Leopard 2PL (and this program is totall disaster right now). 

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