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The autogen pressurization system for the liquid oxygen tank pollutes the tank with carbon dioxide and water ice. The same thing happens on the booster, but the
by russdill 2y ago
The autogen pressurization system for the liquid oxygen tank pollutes the tank with carbon dioxide and water ice. The same thing happens on the booster, but they have systems to manage the issue in place. Presumably they don't want to bother with this step for v1 ships or don't have the mass margin to do so.
It's not a problem for the landing as that sources from a separate clean tank.
- cryptonector 2y agoCSI Starbase seems to think that Raptor v3 might stop using oxygen pre-burner gas for oxygen tank autogenous pressurization and use oxygen gas generated by using liquid oxygen as a coolant, like is already done on the methane side. That would reduce a lot of weight for filtering that they have had to add to prevent dry ice clogging of engine oxygen intakes.