Paying For Propellant By The Gallon?

[kerbiloid]

29 minutes ago, Codraroll said:

11 hours ago, Spacescifi said:

Since reaching altitude anf velocity can take all of eight minutes IRL, I think 100 credits a minute is a reasonable price.

That depends entirely on the value of the credit.

1 credit = 1/800 of the cost of reaching altitude and velocity.

Edited April 29, 2021 by kerbiloid

[Spacescifi]

2 hours ago, Codraroll said:

That depends entirely on the value of the credit.

 

About $1 in the economy.

Edited April 29, 2021 by Spacescifi

[kerbiloid]

10 000 m/s / 800 USD = 12.5 (m/s)/USD

[K^2]

On 4/28/2021 at 9:33 PM, Jacke said:

Of course, there's still Emmy Noether's Theorem, so the way space looks and acts, that means there's conversation laws.  And a glibly designed Portal system ain't going to work.

You can actually get this from just General Relativity. No matter how you stitch the space together through portals, you'll have to match up the metric, which will result in curvature, which introduces gravitational forces that compensate for conservation laws, and you'll have to apply, for example, a pressure differential to pump mass through portal if you're going "up hill".

Of course, if you work out the math, you quickly realize you're just doing a special case of Noether's Theorem applied to the local Poincare symmetries of space-time. But then entire GR is just a mean field theory on that symmetry group, so that shouldn't be a surprise. Emmy Noether's contribution to modern physics, though subtle, is very important, and is exceptionally underappreciated, IMO.