The Boeing XB-56 was a proposal by Boeing for a re-engined version of the American jet-powered medium bomber aircraft, the B-47 Stratojet. The original designation for this modification was YB-47C. == Design and development == The B-47 was equipped with six General Electric J47 turbojets, each rated at 5,200 pounds-force (23 kN) thrust.
The Boeing XB-56 was a proposal by Boeing for a re-engined version of the American jet-powered medium bomber aircraft, the B-47 Stratojet. The original designation for this modification was YB-47C. == Design and development == The B-47 was equipped with six General Electric J47 turbojets, each rated at 5,200 pounds-force (23 kN) thrust.
Source: Wikipedia "Boeing XB-56" · CC BY-SA 4.0
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