You fly the rocket on the bottom of a plane, then fire it out. Assuming these cloud cities have landing strips, right?
Managing ballast might be a challenge…
You fly the rocket on the bottom of a plane, then fire it out. Assuming these cloud cities have landing strips, right?
Managing ballast might be a challenge…
> You fly the rocket on the bottom of a plane, then fire it out
This requires engineering the rocket to withstand structural loads in two directions as well as a ~90-degree rotation under thrust. Not trivial. (It's been a major handicap for airlaunch on Earth.)
Landing on and taking off from floating platforms is like the one part of Venusian colonisation we've actually solved.
Or you just drop it off the side.