Convair YB-60 Totally Explained

Everything about Convair Yb-60 totally explained

The Convair YB-60 was an American experimental bomber prototype for the United States Air Force canceled on August 14, 1952.

Design and development

Paragraph source: Joe Braugher On August 25, 1950, Convair issued a formal proposal for a swept-winged version of the B-36 with all-jet propulsion. The United States Air Force was sufficiently interested that on March 15, 1951, the USAF authorized Convair to convert two B-36Fs (49-2676 and 49-2684) as B-36Gs. Since the aircraft was so radically different from the existing B-36, the designation was soon changed to YB-60.
   The YB-60 betrayed its 72% parts commonality with its piston-engined forebear. The fuselage of the two aircraft were largely identical, although the YB-60 had a longer, pointed nose with a needle-like instrument probe, instead of the B-36's rounded nose, and the tail surfaces were all-new, swept to match the wings, instead of the B-36's more antiquated design. The swept wings actually used a lot of B-36 parts, with a wedge-shaped insert at the wing root to sweep the wings back more than the B-36's wings.
   The YB-60's unofficial competition for an Air Force contract was Boeing's B-52 Stratofortress. Convair's proposal was substantially cheaper than Boeing's since it involved modifying an existing design rather than starting from scratch. Like the B-52, it was powered by eight Pratt & Whitney J57-P-3 turbojets mounted in pairs in four pods suspended below the wing.
   Instead of the B-36's crew of fifteen, the YB-60's crew numbered only 10. Production B-60s were to have similar defensive armament to the B-36.
   Convair YB-60 serial number 49-2676 made its maiden flight on April 18, 1952, piloted by Beryl Erickson. The Convair aircraft beat the Boeing YB-52 into the air by a mere three days, but it was soon obvious that it would win few other contests against Boeing's bomber. The YB-60 was approximately 100 mph (160 km/h) slower than the competition, and had severe handling problems in addition. It did carry a heavier bomb load - 72,000 pounds against 43,000 pounds (20 t) for the YB-52 - but the Air Force didn't see the need for the extra capacity given the YB-60's other drawbacks. (Later "big belly" mods increased the B-52's bombload to 60,000 lbs)
   Accordingly, the flight test program was cancelled on January 20, 1953 with 66 flying hours accumulated, and a second prototype never completed. The airframe was built, but it wasn't fitted with engines or much other equipment. Since Convair had completed its prototype contract satisfactorily, both the YB-60s were formally accepted by the Air Force in 1954. However, the operational aircraft never flew again, and both airframes were scrapped by July of that year.

Specifications (YB-60)

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