ID Bell glide bomb.

Orionblamblam

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It's clearly in the "Tallboy/Grand Slam" family. The squared-off tailfins seem to be those of the T-12 "Cloudmaker," 43,000 pound bomb. The T-12, however, had four tailfins not three.

300px-T-12-USORDMUS.JPG
 

Grey Havoc

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Presumably an emergency program for the Korean War, more than likely for the USAF.
 

klem

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Thanks for the effort,the pictures was on an auction site without any other information.
 

Orionblamblam

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Interesting. Why inverted wings? To allow for supersonic glide?
The forward half of the bomb is a giant iron casting filled with kerplosive. You wouldn't want spars running through that, I suppose, especially if you're trying to *not* modify existing hardware, or if you don't want to mess with the armor-piercing forward penetrator. With these forward swept wings, the spars are far enough aft that they fit through the non-kerplodey rear shell of the bomb, and are apparently part of a new structure.
 

kitnut617

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I agree, I was going to say that a spar would have incorporated the large bolt ring on the rear end of the casting
 

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Trident

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It's clearly in the "Tallboy/Grand Slam" family. The squared-off tailfins seem to be those of the T-12 "Cloudmaker," 43,000 pound bomb. The T-12, however, had four tailfins not three.

The tail fins on these bombs were also set at an incidence to impart stabilizing spin (visible in Justo's drawings), which would be undesirable for a winged weapon. So a new fin configuration was inevitable.
 
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