Kerbal Space Program

I believe Squad has indicated that they wanted to make all LF/O tanks a 9:1 ratio (unfortunately). If this is still the case, then it should be more like this:

externalTankToroid
    mass = 0.025
    amount = 20.25  // LF
    amount = 24.75  // O

externalTankCapsule
   mass = 0.0375
   amount = 30.375  // LF
   amount = 37.125  // O

externalTankRound
   mass = 0.0125
   amount = 10.125  // LF
   amount = 12.375  // O

Renegrade wrote:

I believe Squad has indicated that they wanted to make all LF/O tanks a 9:1 ratio (unfortunately). If this is still the case, then it should be more like this:

externalTankToroid
mass = 0.025
amount = 20.25 // LF
amount = 24.75 // O

externalTankRound
mass = 0.0375
amount = 30.375 // LF
amount = 37.125 // O

externalTankCapsule
mass = 0.0125
amount = 10.125 // LF
amount = 12.375 // O

Well aside for the 9:1 mass ratios the numbers you provide makes no sense for the size of the tanks: I think you need to switch 'round' and 'capsule'. Also there is the disconcerting nature of how the 'round' tank is bigger than the old Oscar-B tank yet holds less.

I've fixed the reversal issue there.

I actually just used your dry mass figures and recomputed for 9:1. The Oscar-B probably has too much fuel anyhow, as it's about 1/6th of the volume (roughly) of a FT-100 and yet holds 40% of the fuel (1/2.5 fuel vs. 1/4 or 1/6 vol).

I thought 1.4 was supposed to involve a part balance and sanity pass, but I think that was either skipped or coming in 1.4.1. Tail fins (even the craptastic AV-T1 winglet) are still more expensive than a rocket engine (500x3 or 500x4 of those > 1200 fund T-45?? the heck?).

There was a balance pass done over Xenon and Monoprop tanks. I think they just forgot to do it on the new small LFO tanks. There has been no talk of fixing relative part costs.

This all depends on what you guys want to do with the wet:dry ratio, if you want to keep it at 9:1 or not and also there is how the Oscar-B tank simply holds too much fuel compared to these tanks. To be in line with the Oscar-B these are the numbers to use:

R-4 'Dumpling'     R-11 'Baguette'    R-12 'Doughnut'    Oscar-B
Wet Mass    0.225    0.675    0.3375    0.225
Dry Mass    0.025    0.075    0.0375    0.025
Wet:Dry Ratio    9:1    9:1    9:1    9:1
Fuel    18    54    27    18
Ox    22    66    33    22
Fuel:Ox Ratio    9:11    9:11    9:11    9:11
Prop Mass    0.2    0.6    0.3    0.2

If on the other hand the Oscar-B was to be cut to half its present fuel load then these numbers would make sense as the Dumpling is 133% the volume of the Oscar-B, and the Baguette is 400% the volume of the Oscar-B:

R-4 'Dumpling'     R-11 'Baguette'    R-12 'Doughnut'    Oscar-B
Wet Mass    0.1485    0.4455    0.3375    0.1125
Dry Mass    0.0165    0.0495    0.0375    0.0125
Wet:Dry Ratio    9:1    9:1    9:1    9:1
Fuel    11.88    35.64    27    9
Ox    14.52    43.56    33    11
Fuel:Ox Ratio    9:11    9:11    9:11    9:11
Prop Mass    0.132    0.396    0.3    0.1