Re:A young Venus had water for 2B years, habitable for longe...
by _Microft on Saturday May 02, 2020 @03:05PM
(#23054072)
No, it has over 100t of dry mass. Its volume, evacuated, would generate lift compensating (this is an educated guess) maybe 5-10t.
I'll update the comment when I have better numbers.
Update:
Using volumes from one of the SpaceX-subreddits [0], I get a total volume of about 2500m³. An evacuated volume displacing 1m³ of carbon dioxide [1] at 1 bar and ambient temperature could lift a mass of 1.8kg. So the total volume of Starship could lift a mass of ~4.5t. It's got a dry mass of far over 100t though.
I'll update the comment when I have better numbers.
Update:
Using volumes from one of the SpaceX-subreddits [0], I get a total volume of about 2500m³. An evacuated volume displacing 1m³ of carbon dioxide [1] at 1 bar and ambient temperature could lift a mass of 1.8kg. So the total volume of Starship could lift a mass of ~4.5t. It's got a dry mass of far over 100t though.
[0] https://www.reddit.com/r/SpaceXLounge/comments/fm735a/starsh...
[1] https://www.wolframalpha.com/input/?i=carbon+dioxide+density...