Quote:
Originally Posted by McHilt
Seeing all the vids of merlins and DBs I'd say blueish like many before me.
The color of flames indicate temperature and as temperature increases flames turn more transparent (the hottest temperatures are nearly invisible as I remember from chemistry class) but hey, I'm not an expert at that
I think the flames should be more transparent (in case when you'd use blueish flames). They also should illuminate the fuselage just slightly... just my opinion as a draughtsman, from what I've seen in the vids posted.
Anyway, nice feature...
Edit: maybe winny is right about that, efficiency rather than temperature but still
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I'm probably being a little pedantic, sorry
Temperature is related to efficiency of burning too, so it is linked to the flame colour, but as they are both effects and have the same cause I ignored it..
You could get yellower flames from an exhaust pipe that had a build up of soot inside or around the edges of the pipe, but this would eventually burn away.. maybe they start yellower because the pipes are dirty?
I know that when they were testing the Spitfire at Boscombe Downs for night flights it was recorded that the exhaust flames were blue.