Post by ambulatorycortex on Mar 10, 2017 18:07:15 GMT
I've noticed that our current cylindrical propellant tanks have the best capacity to mass ratio at 20:1. This seemed counter-intuitive to me until I learned it's because of material constraints at the ends of the cylinder.
I propose the addition of spherical tanks to avoid this issue.
Additionally, shared-bulkhead tanks would simplify vessel construction, since we could create one tank with the correct ratio, so we don't have to maintain tank ratios on our craft.
Even if the tank had a (hopefully somewhat and not much) worse mass ratio, the mass savings from a shorter tank on outer armour might negate that and end up providing the vehicle with more delta-v anyway. That said, armour applications aren't precisely calculated at the micro scale, which can lead to no change in performance if you don't happen to reduce the length by a full armour tile (or whatever exactly it takes).
Post by AtomHeartDragon on Dec 27, 2018 13:34:55 GMT
I think we should have additional free parameter for tankage - shape of the caps. We could have a slider for flatness - maxed out it would end with completely flat caps (volume efficient), zeroed it would make caps hemispherical (mass efficient), anything in between would be flattened domes. 1:1 aspect ratio tank with hemispherical caps would, of course, be spherical and should yield the absolute best mass efficiency.
Cap and side wall thickness should be exposed for reading in the editor.
Also, it should be possible to me additional tank armour out of different (possibly fibrous!) material, and have the required thickness of inner tank wall recalculated based on additional tensile strength provided by armour. This could yield both better tank armour and lighter, composite tanks.