An examination of fuel consumption and vessel range, as implemented in the Star Trek mod.
Each ship consumes supplies for it's core and nacelles for every square entered. All other consumption is ignored, except during combat weapons fire. This comes to between 100 and 130 supplies/square.
Code:
Warp
Tech Speed Uses PerTurn Years(scoop-3,3000store)
1 2 100 200 inf
2 3 100 300 inf
3 4 110 440 3.7
4 5 120 600 1.2
5 6 130 780 0.7
6 6 120 720 0.8
7 8 110 880 0.5
8 8 110 880 0.5
9 9 100 900 0.5
10 10 100 1000 0.4
11 11 100 1100 0.3
12 12 100 1200 0.3
13 13 100 1300 0.3
Currently, the maximum resupply technology (besides infinite) is 2xRam Scoop-III + 1xReplicator-III only allows for a refill rate of 410 supply/star.
This means that maximum sustainable speed through 1-star average space, if extensive research in resupply is spent, is Warp-2.
Most vessels have a storage capacity between 2000-5000 supplies. The operational range in turns of a vessel can therefore be calculated as the root of Storage - Turns x (PerTurn - Resupply) = 0.
The operational time in years in the last column are for a vessel with 3,000 supply storage, using Ram-Scoop-3, and where every system encountered has one star, average.