The B-47 was the first swept-wing jet bomber in the US Air Force's inventory, serving the USAF from 1951 to 1969. The US Navy flew some EB-47Es until 1977. Development began in 1943, and the design changed several times until Boeing came up with a 6-jet aircraft with the engines in pods under the wings. Because of the size of the engine pods, the main landing gear was set up as a "bicycle", with 2 main gear under the fuselage, and smaller outriggers under the engine pods. With this setup, the B-47 could not rotate the nose on takeoff. The main gear was set so the aircraft sat at optimum takeoff angle at all times. The B-47 was subsonic, but extremely fast for a 1950s, setting a number of time and distance records, with speeds around 600 miles per hour.
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