Was there a purpose why the US continued to make 2 different bombers? Instead of a B-24 and a B-17 why not just one and then mass produce it like they did the Sherman tank? Same goes for the Brits.They had the Lancaster and Halifax. Feel free to add your opinions on each.

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yes they needed one for medium/high altitude work and that was the B-24. Remember Ploesti and the low level raids over Holland in September of 44..........crazy but...........

E gotta head out like a new born

As usual, many different factors come into play.

The Halifax and Manchester came into production at around the same time. Manchester = disaster, Halifax = OK at the time. Then the Lancaster is developed from the Manchester and..it's ( probably ) better than the Halifax. But then, Handley Page and their subsidiary factories are 'tooled up' for the Hali and to convert to Lancaster production would take months. Meanwhile, Avro and their subsidiaries can only produce so many Lancasters, during which time the Halifaxes fill the gap....

Of course, if the Air Ministry knew for absolutely certain which would be the better aircraft straight from the drawing-board...but somehow, it never seems to happen that way !

( I shall now hide under my computer desk waiting for Ta152 to come at me with guns blazing to defend the Halifax ! )

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson

Martin, but wasn't the Hali the lower altitude a/c to the Lanc ?

♠

In the case of the B-17 / 24 there were really two major reasons for the split. First, the B-17 was a pre-war production aircraft and required more hours to produce than the 24. The B-24 was an "austire" model that was more adaptable to mass production.
The second reason was, as with the B-29 program, to ensure against a problem with one design or the other. In the B-29 program the competing design was the B-32 Dominator. The B-32 proved to be a failure and the B-29 the success. This dual program approach became a US standard for many aerospace programs from WW 2 on.
With tanks, the system is simpler to produce. Thus, one design was adopted as the standard. Aircraft because of their complexity were best ensured against failure by having 2 or 3 different designs (often having different major components like engines) in production.
An additional reason is that once a company has produced the prototype(s) alot of money is already invested in tooling and special jigs to make the plane. To recoup the cost often a small production run is done as with the B-32.

Erich,

Yup - the Halifax couldn't operate at Lancaster heights, and the Stirling couldn't match either of them.

But they were NOT designed this way - it was due to deficiencies in design. The idea for the 'heavies' was to fly as high as possible, with the largest bomb-load, for the longest distances. Ironically, the Lancaster seemed to perform the best of the three at low-level ( ie Dams, Augsburg Raids...)

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson

Here was my line of thought,how-ever silly. To concentrate on getting the B-29 up ASP. So instead of those 1000 plane raids over Germany,we could send 500 B-29s with the same bomb loads flying too high for flak,etc. [img]graemlins/no.gif[/img]

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You may be 'putting the cart before the horse'...the B-29 was designed as an eventual replacement for both the B-17 and B-24, using lessons learned from operational use of those aircraft.

The first B-29 didn't fly until late 1942 and the decision was taken to initially use this type against Japan due to the very long range flights involved. Type development, or ironing out the bugs, always takes a lot of time ( as happened with the Me 262 ) so in war it's often a case of making the best of what you've got.

It's an interesting 'what if?' though - if things had happened quicker, picture swarms of rocket-equipped Me 262s hacking into massed formations of Superforts at high altitude...

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson

No guns Martin, they were both good aircraft, it was just the Lancaster got all the publicity as did the B-17. The B=24 and Halifax did the same jobs but got no credit for it. [img]graemlins/no.gif[/img]

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson

In any case the B-24 was immediately slashed from inventory as soon as the war ended, while the B-17 soldiered on in secondary roles. I can't place a source now, but I'm given to understand the B-24 was rather difficult to pilot.

In any case, if building a flying model I'd go for the B-24 :- )

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What was it the Fortress crews used to ( most unkindly ) call the B-24 ? 'The crate they flew the B-17 over in....'

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson

B-32 Dominator

They found the cockpit had an extremely high noise level, poor instrument layout, the bombardier's vision was poor, it was overweight and the nacelle design resulted in frequent engine fires.

On May 29, 1945, the first of four combat missions by the B-32 was flown against a supply depot at Antatet in the Philippines, followed by two B-32's dropping sixteen 2,000 pound (907 kg) bombs on a sugar mill at Taito, Formosa on the June 15. On June 22 a B-32 bombed an alcohol plant at Heito, Formosa, with 500 pound bombs (227 kg) but a second B-32 missed flak positions with its 260-pound (118 kg) fragmentation bombs. The last mission was flown on June 25 against bridges near Kiirun in Taiwan.

The only remnant of a B-32 left is a static test wing panel erected as a monument to aviation pioneer John J. Montgomery mounted upright at the Montgomery Memorial near San Diego, California.


http://en.wikipedia.org/wiki/B-32_Dominator

http://www.daveswarbirds.com/usplane...t/dominatr.htm

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i havent heard much of the B-32, it looks alot like the B-29.

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P-40, P-51, and the Spitfire for my opinion these were the three best allied aircraft.

To answer both Framer's question and a bit on the B-32:

The reason the US continued to build two types of many aircraft was due to the way their war production programs were set up. Aircraft manufacturers were often tasked with designing an aircraft to meet some military requirement. The US Army or Navy usually chose the best two prototypes for further development or contracted those two into production.
This was done to ensure that if there were problems with one design or the other in going from prototype to production (often the case....just look at the Germans for examples of this with single production line aircraft) then the most successful design could be pushed ahead while there was still a second design following, just in case.
This was the case with the B-32. Consolidated was tasked along with Boeing to design and build a super heavy bomber with a pressurized cabin, remotely controlled defensive systems, etc. Boeing's design was the B-29. Consolidated ran into all sorts of problems with their design so Boeing got the major production go ahead while Consolidated's B-32 was scaled back, simplified, but kept in limited production....just in case. All told, Consolidated made made just over 100 B-32's most of which were used as reconnissance aircraft.

The multiple aircraft approach has virtues. There are a lot of aircraft that developed teething problems and failed to make it in combat. Sometimes, it is works out well for both aircraft. The Hellcat and Corvair both were good platforms, but initial testing created an attitude that the Corvair was harder to land on decks. The Navy decided that it was good enough to give to the Marines. They also did the unusual by sending an example of each to the opposing manufacturer for evaluation. Both responded with much improved versions. And the eventual growth of the Corvairs led it to continue use into the Korean war.

There were many bombers that trancended the idea of just build one model. The B-25 was an excellent multipurpose platform, but the B-26 and A-26 were also great platforms. The B-26 suffered from an undeserved reputation, but that is not unusual. The A-26 was classified as a replacement for the A-20, but it was every bit the equal of the B-25 and was effective in four wars.

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Just a note: The Corvair was a car manufactured by GM in the 60's and later unjustly vilified by Ralph Nader in his book Unsafe at any speed which marks the beginning of the consumer safety lawsuit movement. The Corsair was an aircraft manufactured by the Vought corporation during and after WW 2.

I had a 1960 Corvair and they were unsafe to drive. If the streets were slick and you went around a corner too fast, your rear end would get there before the front end. Too much weight in the rear because of the engine. I got mine in 1970 for $225 It ran well until I did not notice I had a transmission leak and trashed the transmission.

Also the heater did not work very well and it had no A/C, or power anything.

I think Sea Dog was looking at Convair and wrote Corvair.

He's an abstract thinker like myself.

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Sounds like a Porsche 911 or 912 to me. Same problems, same era.

Don't ask me why I had a brain freeze, but I did.

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Lord, let me be the person my dog thinks I am.

Wow! Just look at this "babe"!!

Convair B-36:

http://en.wikipedia.org/wiki/Convair_B-36

The genesis of the B-36 can be traced to early 1941, prior to the entry of the US into World War II. At the time it appeared that ther