[QUESTION] Fuel tank balance

[CobaltWolf]

Something that's been eating at me. I figured I'd ask before I start trying to figure it out on my own and probably screw the math up.

What are the stock ratios for volume of the fuel tank (diameter x height), dry mass, and the volume of fuel (ie amount of LF and oxidizer)? And for extra fun, price. I want to make sure my fuel tanks are balanced properly but I haven't worked out the numbers yet.

[Acea]

http://wiki.kerbalspaceprogram.com/wiki/Fuel_tank

Tiny = 0.625 m in diameter

Small = 1.25 m in diameter

Large = 2.5 m in diameter

Extra large = 3.75 m in diameter

And heights are half or whole-number multiples of their own diameters.

[CobaltWolf]

http://wiki.kerbalspaceprogram.com/wiki/Fuel_tank

Tiny = 0.625 m in diameter

Small = 1.25 m in diameter

Large = 2.5 m in diameter

Extra large = 3.75 m in diameter

And heights are half or whole-number multiples of their own diameters.

Ah! That certainly makes figuring this out a lot easier. I'll have to crunch the numbers later and post my findings.

[Stone Blue]

@CobaltWolf  Your findings?  

 

[FreeThinker]

On 7-11-2015 at 8:00 PM, CobaltWolf said:

Something that's been eating at me. I figured I'd ask before I start trying to figure it out on my own and probably screw the math up.

What are the stock ratios for volume of the fuel tank (diameter x height), dry mass, and the volume of fuel (ie amount of LF and oxidizer)? And for extra fun, price. I want to make sure my fuel tanks are balanced properly but I haven't worked out the numbers yet.

Ksp stock drymass/wetmass ratio for LiquidFuel/Oxidiser is 1:8

[LukeTheYeti]

On ‎11‎/‎7‎/‎2015 at 11:13 AM, CobaltWolf said:

Ah! That certainly makes figuring this out a lot easier. I'll have to crunch the numbers later and post my findings.

I actually have a huge spreadsheet full of things like weight, fuel capacity, and cost of parts that I'm using to keep my parts in line with stock (and a few mods) values. It's based off of an old google doc I found on here so I don't know how accurate some of it is but I've been trying to update things when I see discrepancies. It's not quite mathing out the actual volume of my tanks but it helps let me know when things become ridiculous.