Does spacex purge Falcon 9 engines after landing ? If so, which gas is used for purging?

  • $\begingroup$ I am just guessing: Spacex might have a lot of on-board RCS’s gas which might come handy or use a dedicated N2 bottle. Or they may purge during post landing checks. $\endgroup$ – karthikeyan Nov 7 '18 at 9:04

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