Boeing B-29 Superfortress
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The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Flying Fortress, the Superfortress was designed for high-altitude strategic bombing, but also excelled in low-altitude night incendiary bombing, and in dropping naval mines to blockade Japan. B-29s dropped the atomic bombs on Hiroshima and Nagasaki, the only aircraft ever to drop nuclear weapons in combat.
Boeing assembly line at Wichita, Kansas (1944)
The length of the 141-foot (43 m) wing span of a Boeing B-29 Superfortress based at Davis-Monthan Field is vividly illustrated here with the cloud-topped Santa Catalina Mountains as a contrasting background.
YB-29 Superfortresses in flight
Analog computer
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TR-10 desktop analog computer of the late 1960s and early 1970s
The Antikythera mechanism, dating between 150 and 100 BC, was an early analog computer.
Analog computing machine at the Lewis Flight Propulsion Laboratory c. 1949.