"The combustor consists out of an inner tube (the flametube) with some organized holes around it's circumference and an outer tube. The air that is fed into the combustor gets divided into 2 air streams. One part is directed into the flametube, where it is mixed with fuel and ignited by a spark. The second air stream moves between the outer tube and the flametube and get's diluted via the holes into the flametube where the air/fuel mixture is constantly burning. At the same time the air that is not burned cools the combustor & flametube down. So you end up with an extremely oxygen rich exhaust gas and an EGT of around 600°C celcius, which isn't even hot enough to kill a VTG turbo."
Very interesting theory right there damn though that just makes me want to see the inside of the (rocket) combustion chamber even more haha.