Facts about The B-17 Flying Fortress
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Experiments with a B-17 named Swoose demonstrated that the aircraft could fly for 11 hours and 45 minutes on a single fuel load, setting endurance records that validated long-range strategic bombing doctrine.
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B-17 crews suffered frostbite so severe at high altitude that some gunners lost fingers and toes despite heated flight suits, forcing modifications to cabin heating systems by 1944.
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The B-17's Norden bombsight, a highly classified mechanical computer, could achieve bombing accuracy within 75 feet from 30,000 feet altitude when operated by a skilled bombardier.
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Eleven B-17s shot down over Bremen, Germany on October 8, 1943 represented the single deadliest day for the bomber force during the first year of strategic daylight bombing campaigns over Nazi territory.
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At 35,000 feet altitude, B-17 crews required pressurized cabins and oxygen masks because the aircraft could reach heights where outside temperatures dropped to minus 60 degrees Fahrenheit.
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Nearly 47,000 airmen died flying B-17 missions during World War II, with an average loss rate of one bomber per 35 sorties flown by the United States Army Air Forces.
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Structural testing of a B-17 prototype in 1935 demonstrated that the fuselage could withstand impacts exceeding 12 times the force of gravity, establishing the aircraft's exceptional durability standards.
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Four B-17s from the 99th Bombardment Squadron, crewed by Tuskegee Airmen, flew their first combat mission on June 2, 1943, breaking racial barriers in the United States Army Air Forces.
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In 1943, the B-17 Flying Fortress achieved a combat range of 2,000 miles, allowing it to strike targets deep within Nazi-occupied Europe from bases in England.
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Approximately 12,731 B-17 Flying Fortress bombers were manufactured between 1935 and 1945, making it one of the most produced heavy bombers in aviation history.
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During World War II, the B-17 Flying Fortress carried a maximum bomb load of 8,000 pounds and required a crew of ten airmen to operate its thirteen .50-caliber machine guns and defensive systems.