ORIGINAL: Andy Mac
Is the problem actually about AvGas v Supply
Funny, I've been asking myself the same question these last few days. If an air sortie burned up a fuel point (as they do on CV's) in addition to supply, it would at least help to slow things down a bit. The fuel supply category already exists and is catered for with regards to being moved by tankers and other vessels if less efficiantly, as LST points out. So it's not like a huge new apparatus would have to be added to make it work (?). Take a look at your sorties count. This is the no. of additional fuel points you'd have to administer to maintain the current level of ops. It would also make it more complicated to grab a base and fly an air armada off it the next turn. An isolated base could be made unable to operate aircraft even though it generates supply. The additional drain on fuel might even hamper our ability to conducy naval operations a little bit, as the fuel is a shared resource. It's no panacea, but I guess every little bit helps.
As it stands, in my opinion, the game doen't do enough to emulate the very real problem the Japanese faced with regards to aviation gasolin, a category every bit as vital as heavy fuel oil for Japan's ability to sustain the fighting. Below is some numbers on Japanese stockpiles and IJN consumption of these two critical items. The points is two-fold: Aviation gas was relatively scarce, and, as we know, although the figures below doesn't in themselves show this, lack of aviation gas seriously hampered all aspects - training not least - of Japanese air operations.
Stockpiles, Heavy Oil/Aviation gasolin (in tons):
12/41: 3,624,000/491,000
42: 3,184,000/460,000
43: 1,804,000/331,000
44: 798,000/155,000
45: 78,000/78,000
8/45: 4,000/17,000
IJN consumption, Heavy oil/Aviation gasolin:
12/41-3/42: 520,000/86,000
4/42-3/43: 3,660,000/466,000
4/43-3/44: 3,510,000/628,000
4/44-3/45: 2,740,000/545,000
4/45-8/45: 250,000/84,000
(Source: Parillo, Mark: The Japanese Merchant Navy in WWII, p.237)
Here's some other numbers that I've computed on the basis of the USAAF statistical digest (
http://www.usaaf.net/digest/operations.htm. ). They pertain the the total and relative comsumption of avgas and bomb weight by FEAF aircraft. Ideally I'd be able to compute the amount of gross shipping tonnage needed to fly a particular mission, but the figures I've found doesn't even remotely allow this. However the point is to demonstrate that avgas wasn't a triffling matter compared with another important category - bombs (the measure by which supply consumption of attack missions are computed in the game). The figures will show how FEAF's heavy bombers consumed 3.84 tons of avgas for every ton of bombs on target, mediums 4.83 tons and fighters 7.56 tons (and incidentally that FEAF's fighters weren't extensively used as FB's until the last year of the war or so). In itself it's obviously not a very good comparison, as any airborne aircraft will consume avgas but only those actually attacking a target will use bombs, but the point is to demonstrate that avgas in itself was an important category of supply in terms of weight, probably, as I suspect but cannot prove, the single most important. With regards to putting a brake on heavy bomber ops, it is notable that the average FEAF heavy baby burned 8.56 tons of avgas pr. sortie.
Tom
Fighters, FEAF, 42-45:
AvGas Consumed (tons):
1942: 9,691
1943: 72,801
1944: 129,544
1945: 99,174
Total: 311,100
Avg. pr. Sortie: 1.15
Bombs Dropped (tons):
1942: 50
1943: 91
1944: 8,563
1945: 32,437
Total: 41,141
AvGas Consumption pr. Sortie (all, tons):
1942: 1.02
1943: 0.94
1944: 1.28
1945: 1.19
Bomb Weight Dropped pr. Sortie (all, tons):
1942: N/A
1943: N/A
1944: 0.08
1945: 0.39
Avg. pr. Sortie: 0.15
AvGas & Bomb Consumption pr. Sortie (all, tons):
1942: 1.02
1943: 0.94
1944: 1.36
1945: 1.57
Avg. pr. Sortie: 1.30
------------------------------------------------------------------------------
Medium bombers, FEAF, 42-45:
AvGas Consumed (tons):
1942: 8,802
1943: 41,431
1944: 117,950
1945: 80,743
Total: 248,206
Bombs Dropped (tons):
1942: 834
1943: 8,034
1944: 25,819
1945: 16,753
Total: 51,440
AvGas Consumption pr. Sortie (all, tons):
1942: 2,96
1943: 3,13
1944: 3,17
1945: 2,85
Avg. pr. Sortie: 3,04
Bomb Weight Dropped pr. sortie (all, tons):
1942: 0,28
1943: 0,61
1944: 0,69
1945: 0,90
Avg. pr. Sortie: 0,63
AvGas & Bomb Consumption pr. Sortie (all, tons):
1942: 3,24
1943: 3,74
1944: 3,86
1945: 3,75
Avg. pr. Sortie: 3,67
------------------------------------------------------------------------------
Heavy bombers, FEAF, 42-45:
AvGas Consumed (tons):
1942: 15,619
1943: 93,254
1944: 231,951
1945: 196,463
Total: 537,287
Bombs Dropped (tons):
1942: 1,749
1943: 21,580
1944: 57,752
1945: 58,798
Total: 139,879
AvGas Consumption pr. Sortie (all, tons):
1942: 8.69
1943: 7.40
1944: 9.22
1945: 8.45
Avg. pr. Sortie: 8.56
Bomb Weight Dropped pr. sortie (all, tons):
1942: 0.97
1943: 1.71
1944: 2.30
1945: 2.53
Avg. pr. Sortie: 2.23
AvGas & Bomb Consumption pr. Sortie (all, tons):
1942: 9.66
1943: 9.11
1944: 11.52
1945: 10.98
Avg. pr. Sortie: 10.79