The Boeing XB-56 was a proposal by Boeing for a re-engined version of the American jet-powered medium bomber aircraft, the B-47 Stratojet. The original...

The Boeing XB-55 (company designation Model 474) was a proposed Boeing aircraft designed to be a strategic bomber. The XB-55 was intended to be a replacement...

development Boeing B-52 Stratofortress Boeing 367-80 Boeing XB-55 Boeing XB-56 Aircraft of comparable role, configuration, and era Avro Vulcan Convair XB-46 Handley...

variants Boeing B-47 Stratojet Boeing B-50 Superfortress Boeing B-52 Stratofortress Boeing B-54 Boeing XB-55 Boeing XB-56 Boeing XB-59 Boeing TB – torpedo...

early World War II. The XB-38 was the result of a modification project undertaken by Vega (a subsidiary of Lockheed) on a Boeing B-17 Flying Fortress to...

The North American Aviation XB-70 Valkyrie is a retired prototype version of the planned B-70 nuclear-armed, deep-penetration supersonic strategic bomber...

winner. On 28 June 1946, Boeing was issued a letter of contract for US$1.7 million to build a full-scale mockup of the new XB-52 and do preliminary engineering...

Lockheed (the Lockheed XB-30), and Douglas (the Douglas XB-31). Douglas and Lockheed soon abandoned work on their projects, but Boeing received an order for...

Aviation portal Aircraft of comparable role, configuration, and era Boeing XB-15 Boeing Y1B-20 Convair B-36 Related lists List of bomber aircraft List of...

controller, and search-and-rescue aircraft. In a USAAC competition, Boeing's prototype Model 299/XB-17 outperformed two other entries but crashed, losing the initial...