I don't see how this is viable as an earth launch system. You have all this complexity and payload restrictions, just to go from a two stage launch system to... a two stage launch system.

However, I think this technology will be extremely valuable for launching material from the moon.

So kudos for investing for this. And I think it will even end up being a profitable investment. Just not for the intended purpose.

What prompted you to invest in this team?

I wonder how much lower the g forces would come than from 10k if the radius was larger. The high energy particle accelerator at cern comes to mind. It wouldn't need to be vertical either just at a slight tilt since to go to orbit you need to travel horizontally most of the time.

I'm having trouble understanding how practical this could be. Do you know what tests they've done to find out what kinds of things can survive the extreme acceleration? Do you know what the force from impacting the atmosphere upon leaving the spin chamber is?

Awesome! Feels like we're starting to get big ideas again.

just out of interest, do they have a charter that stops them developing or selling to the military?

How did you invest in it?