2022年4月12日 · The XB-52 followed the prototype into the air on Oct. 2, 1952. The first flight of the YB-52 lasted two hours and was powered by prototype YJ57-P-3 engines. Despite the difference in designations, the XB-52 and the YB-52 were essentially identical.

2024年10月2日 · The XB-52 was powered by eight Pratt & Whitney YJ57-P-3 turbojet engines, with a normal power rating of 8,700 pounds static thrust at Sea Level (38.700 kilonewtons). The prototype bomber had a cruising speed of 519 miles per hour (835 kilometers per hour), and a maximum speed of 611 miles per hour (983 kilometers per hour) at 20,000 feet (6,048 ...

2 October 1952: The Boeing XB-52 Stratofortress prototype, 49-230, made its first flight at Boeing Field, Seattle, Washington, with test pilot Alvin M. “Tex” Johnston in command. Lieutenant Colonel Guy M. Townsend, U.S. Air Force, acted as co-pilot.

2024年4月15日 · The Boeing XB-52 and YB-52 were prototypes for a very long range strategic bomber. Both were built with a tandem cockpit for the pilot and co-pilot, similar to the earlier B-47 Stratojet. The wings were swept and mounted high on the fuselage (“shoulder-mounted”).

2022年4月16日 · XB-52: A Delayed Start. The XB-52, as the first flying prototype, followed the general configuration of the Model 464-49 design, but was still not a certainty for quantity production, with various rivals lining up, including the Convair YB-60, a …

2001年9月14日 · The XB-52 Stratofortress prototype was rolled out in secret at Boeing Field on November 29, 1951. It did not fly until October 2, 1952. Thus the second prototype, the YB-52, was the first of this generation of aircraft to fly with its takeoff from Boeing Field on April 15, 1952.

With eight jet engines mounted in pairs on a wing with a 35° sweep, the XB-52 had a maximum speed greater than 600 mph. The aircraft was used as a test aircraft for its entire service life, primarily at Wright-Patterson AFB once the initial flight tests were completed.

On April 15, 1952 legendary Boeing test pilot Alvin "Tex" Johnson brought the XB-52 (shown above) prototype aloft for the first time, six years after the company was awarded the contract to...

2023年10月2日 · 1952: The Boeing XB-52 Stratofortress prototype, 49-230, made its first flight at Boeing Field, Seattle, Washington, with test pilot Alvin M. “Tex” Johnston in command. Lieutenant Colonel Guy M. Townsend, U.S. Air Force, acted as co-pilot.

2022年8月6日 · Both the XB-52 and the YB-52 featured tandem seating cockpits with upward firing ejection seats. B-52 Walk-Around At its core, the B-52 design sported a distinctly long and slim fuselage, nearly rectangular in shape when viewed from the front.