Questions tagged [methalox]

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How does one determine the optimal CH4:O2 ratio in a methane-LOX rocket engine?

The SpaceX Raptor uses a 78:22 O2:CH4 ratio. It also has combustion chamber pressures higher than any other rocket engine ever built. My questions are: What's the math / chemistry that determines ...
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How SpaceX plans to deal with possible methane buildup around Starship?

Starship is going to be fueled with methane/oxygen cryogenic liquids. Prior to launch vehicle will spend some time fully loaded on the launchpad. Although methane is lighter than air at normal ...
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Has combustion of premixed LCH4 and LH2 with LOX been investigated for larger rocket engines?

I can only find two papers on blended methane/hydrogen combustion not related to internal combustion engines, and both of those (Mento et al. 2009 and Rosen et al. 2011) are very limited in scope. I ...