The B-17F was developed from the experience gained with the "E" model which was flown extensively by the RAF coastal Command. When the RAF first received the "E" models, it was quickly discovered that it was lacking sufficient defensive armament required for penetration into Europe. The B-17F received additional nose armament and a manually operated ball-turret in the belly. Its appearance was changed with the addition of a clear Plexiglas nose canopy, paddle-bladed popellers and slightly different engine cowlings to accommodate the new propellers. With these changes, the "F" was slwer, but much better armed against fighter attack.
Capable of carrying up to 8,000 pounds of bombs if the external bomb racks were used, the B-17F Flying Fortress contributed heavily to the destuction of Germany's industrial production. Built by Boeing, Douglas, and Vega, a total of 3,405 B-17F models were completed before production shifted to the "G" model.
The B-17 Flying Fortress "Memphis Belle"(Serial No. 41-24485) was on of 12,750 B-17's built by the Boeing Aircraft Co. The Belle was the most famous bomber, because she was the first heavy bomber in Hitler's European war theater to complete 25 combat missions and keep her entire crew alive. She flew for 10 months from November 7, 1942 to May 17, 1943. The Belle 60 tons of bombs over Germany, France, and Belgium. During her 25 missions she flew 148 hours, and coverd more than 20,000 combat miles. The Memphis Belle and her crew left England for the USA on June 9, 1943 to make a War Bond and
Public Relations Tour. The Memphis Belle was named for pilot Capt. Robert K. Morgan's wartime sweetheart, Ms. Margaret Polk. The preserved Memphis Belle remains on display at Mud Island in Memphis, Tennessee.