I think the Jumo004 is a good engine if it had the metalurgy, which it has in this TL which is why the 'can it carry bombs?' question actually matters in this TL whereas it didn't in OTL.
I've always thought that gouging out the combined bomber offensive's eyes would be a good use of the jet and rocket planes, if successful it could cramp bombing operations through lack of recon info. Perhaps another use of Ar234 bombers could be to take out the GEE, OBOE and LORAN stations in Britain to make the pathfinder Mosquito missions more difficult.
That's a big jump when the definitive F3 with 2400lb engines didn't appear until after the war ended. The PoD to me appears to be quite late in the war, which probably doesn't give the British enough time to use their potential to get ahead of the Germans. I think that by late 1945 in this scenario the Brits should gain the upper hand, but not in 1944.
"150 hours service 500 hours bench tests."
http://www.ww2incolor.com/forum/showthread.php?t=4648&page=2"Contrary to popular belief, the Jumo 004 was a fairly sound performer when first-rate steel alloys of excellent heat-resistant qualities were used just after the German capitulation, and it was proved by US post-war tests that simple application of different materials made possible to get average endurance of the turbines up to 150 hours service in actual flight tests, and up to 500 hours on the test stand."
"Contrary to popular belief, the 004A was a fairly sound performer when premium steels were used, and early versions were known to achieve a 200-250 hour service life. However, the diversion of critical materials into U-boat production and other projects late in the war forced Junkers to produce the 004B model with only 1/3 of the high grade steel that had been used in the 004A. It was to be a disastrous concession for the Me 262."
Most histories agree that the lack of metals technology in the engined stopped earlier development of the Me-262 and post war tests with proper strategic metals resulted in 500 hours bench tests and estimated 150 hours combat service.
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Going on steel mass the reduction of about 75 x Type VII UBoats would leave enough steel that through mass production could genetrate ~75,000 Jumo 004A engines from 1942 through 1945. With 200 hours service life [especially with the fuel dump control mechanism of the Jumo 004C] that allows something like following engines/years
~ 2700 1942 [ 1,350 twin engined Me-262/Ar 234]
~ 5500 1943 [ 2,700 twin engined Me-262/Ar 234]
~ 11,000 1944 [ 5,500 twin engined Me-262/Ar 234]
~ 22,000 1945 [ 11,000 twin engined Me-262/Ar 234]
Okay just a couple of small issues with this ...
1) it was not just any steel that was needed. I am not an expert but my understanding is that the steel used in ship construction is only somewhat usable for high temperature uses like say the interior of a jet engine. That takes special additives - it was these additives that were in short supply. Not building UBoats does not change that part of the equation. It does let them build more low hours Jumos but not the high hours ones you mention above.
2) Where would they get the pilots for these aircraft? And the production capability to build the airframes? The ME-262 was more complex to produce than the mainstay ME-109 (~1/3 of all aircraft production in these years was ME-109) and the AR-234 was no easier to produce than the other twin engine bomber models (Less than 3000 total produced in 1944).
Yes they might be able to produce the engines, maybe these engines can beat the 10 hour lifespan that the OTL Jumos had. But I doubt they can produce that volume of airframes.
Now maybe they can produce 1/3 of the airframes you speculate above, with the volume of engines from above at a 50-60 hour between overhaul lifespan. That give the Germans a much better set of aircraft...which is about where I think this TL is going
All the sources indicate the special hull construction of UBoats required the bulk of the special metals construction and this is given as the reason their could not manufacture the high quality steel for these engines.
As to airframe manufacturing to understand how , you need to understand the impact of multi year fixed price contracts and narrowing the field on numbers of planes in production. Once you do , you would know that its no were as difficult as your suggesting. So the previous post is still valid.
This production would be instead of existing fighter production like Me-109 which required 4300 man hours to mass produce compared to 3400 man hours for Me-262 to mass produce.
Great update. I like the way that recon aircraft are having more impact than bombers or fighters!
I've always thought that gouging out the combined bomber offensive's eyes would be a good use of the jet and rocket planes, if successful it could cramp bombing operations through lack of recon info. Perhaps another use of Ar234 bombers could be to take out the GEE, OBOE and LORAN stations in Britain to make the pathfinder Mosquito missions more difficult.
Ar234s could have been intercepted by Meteor MkIIIs over the UK from late '44 in OTL.
There were 210 Meteor F3s built in total, the final one built in 1947, the last 15 had the extended engine nacelles to allow the mach limitation of 0.8. These nacelles were retrofitted on earlier F3s after this date. The early F3s were fitted with 2000lb thrust Derwent Is, later they were fitted with 2200lb Derwent IIs and 2400lb Derwent IVs. Of the F3 variants I think only the Derwent IV, long nacelle would be able to catch the Ar234 in a straight up interception and tangle with the Me262 in a straight up dogfight.
By the time the F4 came along the Meteor had clipped wingtips, long engine nacelles and Derwent Vs which were more akin to Nenes than the original Derwents. This variant would leave the 262 for dead with about 50mph more speed and almost double the thrust for climb performance. But it wasn't due for some time without a serious push.
Here is part 3, comments and support welcomed
Thanks.
Great update. I like the way that recon aircraft are having more impact than bombers or fighters!