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I think what's missing here is the ability to cause the "most havoc" but also have the best survival rate based on the mission at hand. While the efforts of the B-17, B-24 and Lancaster can be recognized, their participation is still over a 3 year period in an environment that was not far from the enemy. the B-29 had a deployment a little over a year and had to fly thousands of miles to bring the fight to the enemy and sometimes the flight there was more dangerous than the actual mission. IMO the B-29 is still out in front.
There is another good way of looking at it. If you had a choice, which bomber would you choose to fly?
operation Point Blank and here is an excerpt fron that orderIn terms of actual bombing though can it truly be said that the USAAF was more effective than the RAF/Commonwealth? Surely drawing up the fighters is a side issue?
Was it ever stated that bringing up the LW to fight was an aim of the daylight raids, or was it a side effect? I am not an expert on these matters, I just don't see how 'trying to get intercepted' shows an aptitude for bombing.
On the armament, the Lancaster and Halifax were capable of decent defensive mountings, though they were .303's. However, it would be fairly simple to switch to .50's, or maybe 20mm or a mix. (probably lfewer guns though, ie 4x .303 turret to 2x .50 turret, or sigle 20 mm, with single gun implacements, ie ventral mount on Lanc, with single .50)
so 2x .50 (or 1x 20 mm)in nose, dorsal, and tail turrets. 1x .50 in ventral mount. On Lanccaster.
Still not as well protected as the B-24 or B-17, (particularly from below) but probably good enough. (possibly a better ventral mount could be developed for the Lanc, was that ever done?)
I don't think they could fly the same mission as they were woefully underarmed with the 303's and no ventral armament . as it was the the germans could sit back out of range of the 303's and have a free shot. I am not knocking the RAF or RCAF who flew the bulk of these night missions , its with hindsight that I believe that the resources could have been put to better use.
I remember somewhere on one of the many thread over this, that .50's were used on occasion, or had been fitted onto the Lancs, with various degree's of success.
But it never had the capacity to carry at a minimum, 10 x .50's like the B24 had.
I know, I said it wouldn't be as good as the B-17 or B-24, I was saying it could have been adequate though.
But another thing to think of is the British Bombers were not good at high alt, even compared to the B-24, the Lancaster was the best, but then only with liquid cooled engines. But then we could say if they wanted to focus on high-alt day opperations they could have invested in turbocharger development (or gotten them from the US) or put more development into high-alt supercharged versions of the Hercules engines.
At medium alt though there were two major problems for day opps, vulnerability to flak, and greater vulnerability to enemy fighters: the German fighters (particularly the 190, the 109 had good high alt performance) operated best at medium altitudes, and would reach the bomber altitudes more quickly to intercept. And the allied fighters would not have the same kind of advantages any more. (although if the escort fighters had been optimised for meduim altitudes, that could change too)
The B-29 not only carried a greater bomb load than the Lancaster, it was able to do so over a way longer distance - compare the Lancaster's range with it's 20,000 pound bomb load with that of the B-29.The B29 came to late in my book and could only carry a similar bombload to the special lancs anyway.