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Apparently SN8 recently underwent a 'Cryo' pressure test and to do that the press stated that 1000 tonnes of liquid Nitrogen was used! Is that really true? That got me thinking: just how much does this Starship weigh on liftoff? I have tried searching the internet with little and confusing results, does anybody here know how much it will weigh for its 50,000' test flight?

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  • $\begingroup$ Nitpicking: you should ask what it's mass will be, since shortly after liftoff its weight will be huge as a result of the launch acceleration. $\endgroup$ – Carl Witthoft Oct 15 '20 at 11:42
  • $\begingroup$ Absolutly Carl, however I was really trying to get a sense of the task that those engines will face. I know the figure will not be exact as fuelling takes place up until just before launch. I'm trying to visulise it in everyday items, like how many 40 ton trucks it would be. I dare not think about the booster too! $\endgroup$ – Mike54 Oct 15 '20 at 14:50
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    $\begingroup$ Do the Gross Weight and Propellant Mass values at en.wikipedia.org/wiki/SpaceX_Starship suffice? $\endgroup$ – Carl Witthoft Oct 15 '20 at 18:12
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    $\begingroup$ Or the tables at spacelaunchreport.com/bfr.html $\endgroup$ – Carl Witthoft Oct 15 '20 at 18:13

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