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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 ...
Boeing B-17G-15-VE Flying Fortress, 42-97493 of the 2nd Ferrying Group out of Dover Army Airfield, crashes 2 miles SW of Gander shortly after takeoff, 29 December 1943. Witness, a F/O Fisher, reporter that the Boeing bomber banked very sharply to the left, more in the style of a single-engined aircraft than a four-engined bomber.
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 conversion of the long-range XB-35 to jet power essentially cut the effective range of the aircraft in half, putting it in the medium-range bomber category with Boeing's new swept-winged jet bomber the B-47 Stratojet. The B-47 was optimized for high-altitude and high-speed flight and, in an era where speed and altitude were becoming ...
Delta Air Lines Flight 1141, a Boeing 727 flying between Dallas-Fort Worth and Salt Lake City on Aug. 31, 1988, crashed shortly after takeoff. Of the 108 on board, two crew members and 12 ...
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 ...
The Martin XB-51 was an American trijet ground-attack aircraft. It was designed in 1945 and made its maiden flight in 1949. It was originally designed as a bomber for the United States Army Air Forces under specification V-8237-1 and was designated XA-45. The "A" ground-attack classification was eliminated the next year, and the XB-51 ...
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.