Why Do Russian Jets Burn Blue Not Orange Like American Ones

So Russian jets are more efficient?

I wouldn't take this video too seriously. There is a big difference between temperature the fuel burns vs temperature it exits the rear nozzle. Since the combustion temps are likely similar the lower exhaust temp likely is more efficient: turbine recovery or bypass air.

This is not correct

blue looks cooler

Vodka?

The real question is what colors do the plans burn when they are shot down? We don't know because nobody can shoot the F-22 down!

T38 in afterburner burns blue

Lower heat signature.