The Sperry lower ball turret was used in the Boeing B-17Flyingfortress and the Consolidated B-24 Liberator. The ball turret was mounted underneath the aircraft and was used to defend the bomber against aircraft attacking from below.
The turret mounted two Browning 50 caliber machine guns that would fire750 to 850 bullets in a minute , that’s about 14 bullets a second. Statistically, the ball turret was one of the safest crew positions during WWII as ball turret gunners had the lowest loss rate.
THE SPERRY BALL TURRET
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Edited by sniper1946, 28 September 2010 - 04:40 PM.