A Funny Thing Happened on the Way to the Logistics Ship

[phavoc]

We know the volume of fuel that the tanks held. Rounding: 380K-390K gallons for LHyd and 145K for LOx.
A separate unrep is used for the Lox. That system can be smaller by more than half in Traveller HG22 terms.
There is no point in using the external tank dimensions, when we know the tank capacities, the volume of a gallon and the number of cubic feet in a Dton.
Going another way, 1000 kg of LHyd is a Dton. The LHyd tank held 104,000 kg of LHyd. 104 Dtons. Divided by 3 hours is ~34 Dtons per hour.
I initially went only with the LHyd, since that is the fuel of choice in Traveller.

We know the actual dimensions of the LHD tank, which is 6/9m tall x 8.4m diameter. The volume of the cylinder is 1,529 cubic meters. That breaks down into 8.4(sq) x 6.9 x 3.14 (don't have the scientific notations handy). Doing the math results int he 1,529 cubic meters. I thought about doing it based on the volume of fuel, but since we have the actual measurements of the tank it would be more accurate to use those to calculate Traveller volume.

And the dimensions provided are not for the entire tank (which, as you correctly pointed out, holds LOX and LHD together. The dimensions I am providing are for the LHD portion of the tank only.

 

[Arkathan]

Or since we know the volume and weight of the fuel that NASA actually put in those tanks, we could go by their actual numbers instead of relying on supposition. Since those were the numbers that got them a three hour fueling time.

 

[phavoc]

Or since we know the volume and weight of the fuel that NASA actually put in those tanks, we could go by their actual numbers instead of relying on supposition. Since those were the numbers that got them a three hour fueling time.

The issue here is that doing it your way gets you to 104 Dtons. Using my way gets 1,500 dtons. Thats a big difference in sizes for holding the same 1.5million liters of LHyd. I'm not the mathiest person on the planet, so if I'm missing a step somewhere please let me know.

 

[J. L. Brown]

The issue here is that doing it your way gets you to 104 Dtons. Using my way gets 1,500 dtons. Thats a big difference in sizes for holding the same 1.5million liters of LHyd. I'm not the mathiest person on the planet, so if I'm missing a step somewhere please let me know.

1500000 liters of H2, divided by 1000 liters per cubic meter, divided by 14 cubic meters per dTon gets us to ~107.1 dTons of H2; not 1500 dTons. I think you may have missed a step.

 

[Condottiere]

At some point, you just bite the bullet, and pay for a breakaway hull, for fairly instant added tank and cargo capacity.

 

[MasterGwydion]

Cargo handling is left notoriously undefined: loading belt vs. cargo crane - random and incompatible specifics (tons versus people equivalent, very expensive versus very cheap). As for UNREP: SpaceX is doing more than 4000 tons of prop in 40ish minutes these days, so hard to say. Plus, there's a big difference between transferring liquids and moving cargo containers that's left vague.

What I'd like to see - and I'm sort of pushing this with comfort levels in vehicles, is that every choice you make on what to add or subtract should have some sort of game effect, even if peripheral: like making things fancier to match the SOC you're trying to project, or to make the ride better for long durations, or... something, doesn't have to directly be a DM to a task, but a decision to make an available ton into cargo space (free and possibly income generating) or into common space (MCr0.1 per dton and... um... er... ) should do something.

For making things fancier, I just use the rules from the old Dilettante book. SOC10 and below are 100%, up to SOC15 at 500% the cost. This seems to work well and even the Standard Staterooms have iridium door handles and grav beds.

 

[AndrewW]

For making things fancier, I just use the rules from the old Dilettante book. SOC10 and below are 100%, up to SOC15 at 500% the cost. This seems to work well and even the Standard Staterooms have iridium door handles and grav beds.

Hey, iridium needs to be reserved for Imperial use only for the throne.

 

[Anstett]

The claim the throne on the Floating Palace of Drinax is larger and older than the Imperium's.

 

[phavoc]

1500000 liters of H2, divided by 1000 liters per cubic meter, divided by 14 cubic meters per dTon gets us to ~107.1 dTons of H2; not 1500 dTons. I think you may have missed a step.

Yeah, you are right. Inflation is everywhere!