SpaceX Raptor: Methane fueled full-flow staged combustion cycle engine

Re:SpaceX Raptor: Methane fueled full-flow staged combustion... by Pulletwee12549 on Monday May 27, 2019 @04:49AM (#20020494)

How does the Raptor solve the coking problem in the fuel rich pre burn chamber?

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Re:SpaceX Raptor: Methane fueled full-flow staged combustion... by gruturo on Monday May 27, 2019 @05:34AM (#20020690)

By using methane instead of kerosene.

Methane won't cause soot/coking.

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Re:SpaceX Raptor: Methane fueled full-flow staged combustion... by paul_f on Monday May 27, 2019 @09:10AM (#20021880)

My analysis is probably wrong, but anyway, Methane is CH4. There is one carbon atom to 4 hydrogen atoms. RP1, or Kerosene, is a mix of different chemicals, but the ratio is roughly one carbon atom for every two hydrogen atoms. So, with Methane, there is less carbon to be converted to CO2 or left as soot for the same amount of hydrogen.

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