Boeing XB-55

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The Boeing XB-55 was a turboprop-powered version of the B-47 Stratojet. Mounting four Allison T40 engines driving contrarotating propellers, the XB-55 had a projected speed of nearly 500 mph. This was inferior to the performance of the B-47, and the project was cancelled.

A turboprop-powered variant of the B-47 did fly, when the XB-47D was modified to test Wright YT49 engines.

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Related development

B-47 Stratojet

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B-52 - XB-53 - B-54 - XB-55 - B-56 - B-57 - B-58

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Categories: U.S. bomber aircraft 1950-1959 | Bomber stubs | Aircraft without specifications

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