Oh and another thing, I guess I will have to hold off on building the Anigrand B-32 until after this book comes out......oh well
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Spicmart,
I believe Initially the B-29 and B-32 programs were on the same footing having the same mission requirements/priority. In total 4 company's submitted designs; Boeing and Consolidated winning over Douglas and Martin. The requirement stipulated things like range and bomb load. How to make it happen was left up to the aircraft company's. Hence the size differences. Though I want to say the AAF preferred the Boeing design proposal over Consolidated. The AAF went ahead with two designs to cover their ass hoping at least 1 would fulfill the requirements.
Initially CVAC had a slight lead as the XB-32 was the first to fly, beating out the XB-29 by a week or 2 in sept 1942. Unfortunately CVAC seems to have had more difficulties with the pressurization and remote controlled turrets. (I think the turret difficulties had more to due with Sperry). Also the first prototype crashed on what was to be it's 31st test flight. This caused delays in the program. CVAC had to rush to get the second prototype ship in the air.
Eventually with the B-29 progressing (and not without its own problems) the AAF changed the design requirements in 1943 omitting pressurization and remote turrets for the B-32. This necessitated a major redesign, again delaying production. The plane in the new configuration would again require flight testing. By this time the B-32 was definitely not the AAF's first choice in the VHB category.
So you have the B-29 undergoing service test in late 1943, and flying it's first combat mission by June 1944. By 1945 production capacity had surpassed what the AAF required and was being utilized in bombing missions by the hundreds.
VS
The first newly redesigned B-32 didn't even get into the air until August 1944. Service testing wrapped up in May or June 1945 and by August only around 9 B-32s had made it overseas for combat duty. The AAF still had plans to use it due to the enormous cost and effort expended in creating it, but the end of the war eliminated the need altogether.