08-17-2016, 03:18 PM
Surface to dispose of waste heat scales with R^2. Internal passages for access imply a similar limit on how much hardware you stuff inside.
Pressure vessel loading is as you describe.
The gotcha may be centrifugal stress, scaling with radius and gravity. Beyond a certain scale you are forced to reduce artificial gravity or get clever in your engineering, or the weight of the structural elements opposing gravity exceeds their own strength.
Pressure vessel loading is as you describe.
The gotcha may be centrifugal stress, scaling with radius and gravity. Beyond a certain scale you are forced to reduce artificial gravity or get clever in your engineering, or the weight of the structural elements opposing gravity exceeds their own strength.