Boeing B-17G Flying Fortress

The Boeing B‑17G Flying Fortress, the final production model of the legendary B‑17 series, entered service in early 1944 after years of development that began in the 1930s. Designed by Boeing as a four‑engine, all‑metal heavy bomber, the G variant incorporated a larger chin turret to counter frontal attacks, a fully enclosed gunner’s station, and upgraded Norden bombsight for improved precision. Powered by four Wright R-1820‑97 Cyclone radial engines delivering 1,200 horsepower each, it could cruise at 150 mph, reach a ceiling of 35,600 ft, and carry up to 8,000 lb of bombs on long‑range missions. More than 12,000 B‑17s were built, but the G model accounted for the majority of combat sorties over Europe, where it earned a reputation for durability; many aircraft returned to base with extensive damage yet remained airworthy. The B‑17G’s rugged construction, defensive armament of up to thirteen .50‑caliber machine guns, and ability to operate in tight formations reshaped strategic bombing doctrine. Its legacy endures as a symbol of Allied air power in World War II and as a benchmark for survivable bomber design in subsequent generations of military aviation.

Boeing

Boeing B-17G Flying Fortress

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Design & Classification