Friday 2010-12-10 Dev. video update and Discussion

[Solnyshko]

Re exhaust stacks; my understanding is that it was the cooling pipes that glowed red, and it was this 'hot metal' and not the flame which was visible from a distance - especially relevant in night fighting.

[JAMF]

Mr. Maddox, a quick question on last weeks update; Was the map in the FMB a temporary version, or does the SoW map have structures from after the war? (Like the Basin de L'Atlantique at Gravelines, WSW of Dunkerque?)

Bear in mind that the Luftwaffe used effective flame dampeners. After extensive training in identifying flame patterns an American pilot said he never saw flames due to the dampeners but the training did help him separate Luftwaffe flights from Allied.

[Flanker35M]

S!

I doubt they would run up the DB engine above idle as the manual for it states you have to wait until oil/fuel pressure exceed a certain limit. The idle RPM for DB605A-1 is 600-700rpm and in the video the RPM was not high IMO. But good points BadAim. Anyway in above videos can be clearly seen blue flames instead of yellow. I would bet the yellow would come if the mixture was way too rich or unburned fuel in the cylinders when firing up. Well, let's see..Also note that the blue flame did not light up the plane as much as in SoW video.

[Oleg Maddox]

Originally Posted by Jg2001_Rasputin

Merlin V12 Startup, I see a lot of blue

Please read with atention: The color of exhaust from the direct pipe and from the extended are different. The temperatue of the flame decreasing with the longer leght of pipe. More lower temperature - more red flame. The most hight is right from the hole without pipe.

As I told above a lot of factors is present in forming of color.

Originally Posted by KOM.Nausicaa

Hello Oleg --

many thanks for the update !

Yes, I think it's too yellow. It should actualle be more white/blueish, like in the DB 605 engine video posted above. But I have to admit that I have no idea what the difference from engine type to engine type makes.

They're all pretty much the same. Big row of cylinders igniting avgas in them and venting the exhaust out the pipes in the side. Unless there was some sort of addidive that would change the colour (not likely) then they'd all be blue like you're suggesting.

The flashes are one reason why some 109's had the exhaust shield covering the pipes, so they would not be seen in low-light conditions, but as oleg just mentioned there are other factors at work.

[swiss]

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[Flanker35M]

S!

If comparing Spitfire Mk.I/Hurricane early marks and Bf109E-4 it can be easily seen that the Spitfire/Hurricane have longer exhaust pipes than Messerschmitt. I recall reading the exhausts on a DB engine were very short, in range of 10-15cm only.

[KOM.Nausicaa]

Originally Posted by speculum jockey

They're all pretty much the same. Big row of cylinders igniting avgas in them and venting the exhaust out the pipes in the side. Unless there was some sort of addidive that would change the colour (not likely) then they'd all be blue like you're suggesting.

The flashes are one reason why some 109's had the exhaust shield covering the pipes, so they would not be seen in low-light conditions, but as oleg just mentioned there are other factors at work.

I already corrected myself after Oleg's post.

[Oleg Maddox]

Originally Posted by JAMF

Mr. Maddox, a quick question on last weeks update; Was the map in the FMB a temporary version, or does the SoW map have structures from after the war? (Like the Basin de L'Atlantique at Gravelines, WSW of Dunkerque?)

Final size. No changes. We can't satisfy everything. There are limits in size by memory, limits of other type, etc. We was need to cut by this way. Originally plannen way more greater. But there is a great contradicitons between what to put in terms of detailization and what would be the size due to this detalization. Again it is impossible to make everything withouit going for compromisses.
In Il-2 in every map we had also compromisses. Repeat: in every, is it crimea or moscow map, etc. And we were need to cut other possible historical action as well due to this fact .