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Posted 7/8/2009 Printable Fact Sheet
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Convair YB-60
Convair YB-60 3/4 front view (S/N 49-2676). Note the B-36 in the background. (U.S. Air Force photo)
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The YB-36G was designed as an all-jet version of the B-36. Eight Pratt & Whitney XJ57-P-3 turbojet engines were mounted in four nacelles in an arrangement very similar to the Boeing B-52. The USAF authorized Convair to modify two B-36Fs (S/N 49-2676 and 49-2684) in early 1951. Although the G was similar to the basic B-36, there was substantial reengineering done including a completely new 37-degree swept wing. The design was eventually redesignated YB-60 to reflect these differences. The first flight was April 18, 1952, and performance was better than the B-36, but was greatly inferior to the Boeing XB-52. The YB-60 never entered production. The second prototype aircraft was never completely finished, and both YB-60s were scrapped in the mid-1950s.

Type Number built/
YB-60 2 (cv) Eight jet version of B-36

Armament: Designed for two 20mm cannons in the tail and up to 72,000 lbs. of bombs
Engines: Eight Pratt & Whitney XJ57-P-3 turbojets of 8,700 lbs. thrust each
Maximum speed: Approx. 510 mph
Cruising speed: 435 mph
Range: 10,000 miles maximum ferry range
Service ceiling: 52,000 ft.
Span: 206 ft. 0 in.
Length: 171 ft. 0 in.
Height: 50 ft. 0 in.
300,000 lbs. maximum
Crew: Five (pilot, copilot, navigator, bombardier, tail gunner) 
Serial numbers: 49-2676 and 49-2684 (S/N 49-2684 was never completed)

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