NASASpaceFlight.com Forum
General Discussion => Q&A Section => Topic started by: cube on 02/18/2022 05:20 pm
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Hello, I know that the color of the exit plume of a rocket engine is determined in part by the type of fuel used but during a Soyuz launch the exhaust plume from the first stage is yellow-white in color at the exit of the engines but further turns pink while the exhaust plume of a first stage of Falcon 9 always remains yellow-white however the two rockets use the same type of fuel what explains this difference?
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Hello, I know that the color of the exit plume of a rocket engine is determined in part by the type of fuel used but during a Soyuz launch the exhaust plume from the first stage is yellow-white in color at the exit of the engines but further turns pink while the exhaust plume of a first stage of Falcon 9 always remains yellow-white however the two rockets use the same type of fuel what explains this difference?
Temperature and combustion cycle determine color
And they are not quite the same fuel.
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Thank you !