Did real aircraft engines overheat at military power?

[GtoRA2]

Did real aircraft engines overheat at military power?

I have read a lot about WW2 planes. I have read the Graham White book on the R2800, and Allied aircraft engines. I am reading through Vees for victory, a book on just the V1710, and nothing in any of those books mentions the engines overheating at Military power.

The Vees for Victory book talks about how the V1710 had to run for 100plus hours at military for it to be accepted by the Army Air corp.

I see a lot of guys pushing for engine overheating, and I would like to know if this is a myth and people like it cause of IL2 or was it a real problem? I can see other reasons for not running around at Military all the time, mostly to do with how it would affect the range of the plane.

Does anyone have a source that talks about his stuff? I am more then willing to buy a book to read about it, web sites are good as well, as long as they have some historic data to back the claims up.

[frank3]

Do you know you have 3 the same threads up?

[vorticon]

if he didnt before he knows now...

as for the question probably not...even if there was a danger of it higher altitudes that planes flew at are usually cold so that would help maintain a lower engine temp.

[GtoRA2]

I would like to see if there is specific engines that maybe had heat issues. Like maybe the 109 had radiators that were two small etc.

I would also like to hear with the whole thing came from and if it is has any historic background.


Another reason I can think is wear and tear on the Engine, running at military had to cause more?

[moot]

You could do a search on the forum, this one and at least the AC forum, there's lots of material there.

Basically there are some real conditions that aren't reproducible in the game, like living only once, ressources shortage etc.

[GtoRA2]

Moot has there been a thread just talking about engine heat? I do not care about the only dying once stuff etc.

[moot]

at least a few yeah.

What I mean is ingame you are just a player taking up a plane that doesn't have any price tag, no ground crew taking care of it, one lifetime (the sortie), not a full physics modeling (not every fuel and oil lines etc is there to be damaged or fail etc), etc etc

Far as I know, anything will overheat in the right conditions, and in AH (all) the conditions aren't really there, at least not the way they were in reality.  I could guess that FB models things realistically, but accurately, I'm not sure of.
I can't quantify, but you might be able to, reading those old (for the most part) threads.

[Karnak]

I have a table with range data for the Mosquito with Boost at +14lbs.  That seems to indicate to me that it could run at +14lbs (MIL power) for extended times.

[GtoRA2]

I figured that would be the case for most WW2 planes.

 I still can't find anythreads that talk about Engine heat over long periods, I think it is mostly a game compromise I would rather not see.

[txmx]

Any  gasoline engine can over heat.
But i would think the higher you go and the thinner colder air would prolong the heating process.

[Karnak]

Let me clairify that the Mosquito in AH seems to be powered by Merlin 21 or 23 engines that have a MIL boost setting of +9lbs and a WEP boost setting of +14lbs.

The Mosquito in my example was probably powered by Merlin 25s and would have had a WEP boost setting of +18lbs.

I have not seen any extended duration examples for WEP settings.

In AH you can run at MIL power for as long as you have fuel.  Only on WEP does the engine overheat.

[frank3]

The 262's engines needed to be replaced after 24+ flying hours, can we have that modelled?

[BenDover]

They also had a tendancy to 'over heat' if you monkeyed around with the throttle too much.

[frank3]

Like flying on wep all the time

[GScholz]

There are a lot of factors. Some are engine specific others are aircraft specific. Most WEP or MIL restrictions had nothing to do with overheating the engine itself, but rather overheating specific parts in the engine, like piston heads and ball bearings. The 109s had a 30 minute restriction on the "combat and climb" setting (MIL) and a 3 to 10 minute restriction on the "emergency" setting (WEP) depending on model.

One good example of this is the P-38. Early model P-38s in Europe actually had problems with too much cooling at high altitude. They had problems keeping the engines hot enough for effective and reliable operation, while at the same time they had problems with over-revving the turbos, burning out the ball bearings.

So my conclusion is that engine cooling are rarely, if ever, a factor in restrictions on engine power settings.