Search results
Results from the WOW.Com Content Network
The Boeing XB-15 (Boeing 294) was a United States bomber aircraft designed in 1934 as a test for the United States Army Air Corps (USAAC) to see if it would be possible to build a heavy bomber with a 5,000 mi (8,000 km) range. For a year beginning in mid-1935 it was designated the XBLR-1. When it first flew in 1937, it was the most massive and ...
The Boeing XB-39 Superfortress was a United States prototype bomber aircraft, a single example of the B-29 Superfortress converted to fly with alternative powerplants. It was intended to demonstrate that the B-29 could still be put into service even if the first choice of engine, the air-cooled Wright R-3350 radial engine, ran into development or production difficulties.
Martin XB-27 heavy bomber: n/a: abandoned project: 0: Martin XB-33 Super Marauder heavy bomber: n/a: abandoned project: 0: Naval Aircraft Factory SBN dive bomber: 1936: retired 1942: 31: North American A-27 attack: 1940: retired 1941: 10: North American T-6 Texan light attack: 1940: retired: 15,495 [notes 4] North American XB-21 medium bomber ...
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 designation for this modification was YB-47C . Design and development
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 for the Boeing B-47 Stratojet in United States Air Force (USAF) service.
Boeing XB-29-BO (S/N 41-002, the first XB-29 built) The XB-29, Boeing Model 345, was the first accepted prototype or experimental model delivered to the Army Air Corps, incorporating a number of improvements on the design originally submitted, including more and larger guns and self-sealing fuel tanks. Two aircraft were ordered in August 1940 ...
As a result, two prototype aircraft, designated XB-70A, were built; these aircraft were used for supersonic test-flights from 1964 to 1969. In 1966, one prototype crashed after colliding with an F-104 Starfighter while flying in close formation; the remaining Valkyrie bomber is in the National Museum of the United States Air Force near Dayton ...
Thus, the funding made available by the XB-55 cancellation was earmarked for the study of a supersonic medium bomber, and a request for proposals was extended to several aircraft companies. Boeing submitted a proposal for a four-engine, high-wing aircraft with a highly streamlined fuselage. The four engines would be buried in thickened wing ...