It looks a bit half-hearted compared to Skylon (Off-Topic)

by scarab @, Tuesday, June 03, 2014, 14:26 (3616 days ago) @ Axelrod vK

Skylon's rockets can switch from air breathing to internal O2 tanks. It liquefies the incoming air in under a hundredth of a second and pumps that to the rockets. Or at least it will when it's built.


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