2024年10月30日 · The XB-17 could carry eight 500 pound (227 kilogram) bombs in an internal bomb bay. Defensive armament consisted of five air-cooled .30-caliber or .50-caliber Browning machine guns. Starboard waist gunnner’s position of the Boeing 299.

The Boeing B-17 Flying Fortress is an American four-engined heavy bomber aircraft developed in the 1930s for the United States Army Air Corps (USAAC). A fast and high-flying bomber, the B-17 dropped more bombs than any other aircraft during World War II, used primarily in the European Theater of Operations.

在二次世界大戰之中，B-17是美國陸軍航空軍對德國工業和軍事目標進行日間戰略轟炸的主力機種。 期間，駐在 英國 的 美國第八航空隊 及布署於 義大利 的第十五航空隊，協同英國轟炸司令部的轟炸機隊，對 西歐 地區的城市、工廠與戰區進行日夜不停歇之空中攻擊，為之後的诺曼底登陆作戰進行鋪路 [6]。 除歐陸戰場之外，少數的B-17亦飛翔於太平洋戰場之上，承擔對日本艦船和機場轟炸的部分任務。 美國陸軍航空軍 在 第二次世界大戰 之前即认为戰略轟炸機是強而有力的戰 …

The following is an extensive catalogue of the variants and specific unique elements of each variant and/or design stage of the Boeing B-17 Flying Fortress, a heavy bomber used by the United States Army Air Forces and other Allied air forces during World War II.

In this photo, the Model 299 (XB-17) bomber, an early prototype for the B-17 Flying Fortress, sits outside a Boeing factory. The Model 299, a four-engine plane, was made to fulfill a request for a plane to carry a 2,000 pound bomb load 2,000 miles at 200 miles per hour.

2024年7月16日 · The XB-17 could carry eight 500 pound (227 kilogram) bombs in an internal bomb bay. Defensive armament consisted of five air-cooled .30-caliber or .50-caliber Browning machine guns. Starboard waist gunnner’s position of the Boeing 299.

美国B-17飞行堡垒重型轰炸机， 第二次世界大战 初期美军的主要轰炸机， 波音公司 制造，共生产12700架。 美国B-17飞行堡垒重型轰炸机拥有13挺重机枪，是一个名副其实的“飞行堡垒”。 虽然B17航程短,但它有较大的载弹量和飞行高度，并且坚固可靠，常常在受重创后仍能“晃晃悠悠”的飞回机场，因此挽救了不少机组成员。 波音（Boeing）B-17 飞行堡垒也许是二战中美国制造的最著名的重型轰炸机，她的声望远超过了生产数量更多的同袍：联合公司的 B-24 解放者。 美国一 …

2024年10月30日 · The largest land airplane built up to that time, the XB-17 “seemed to have defensive machine guns aimed in every direction.” A Seattle Times newspaper reporter, Roland Smith, wrote that it was a “flying fortress.” Boeing copyrighted the name. Major Hill was the Chief of the Flying Branch, Material Division, at Wright Field.

United States of America - Boeing Model 229 (XB 17) The Boeing 299 was the original bomber design made by Boeing for a United States Army Air Corps bomber. In 1935, the Boeing 299 competed against other companies at an evaluation at Wright Field.

Boeing XB-17. The XB-17 (Model 299) crashed during its test flight at Wright Field on Oct. 30, 1935. (U.S. Air Force photo)