The North American XB-28 (NA-63) was an aircraft proposed by North American Aviation to fill a strong need in the United States Army Air Corps for a high-altitude medium bomber. It never …

The B28, originally Mark 28, was a thermonuclear bomb carried by U.S. tactical fighter bombers, attack aircraft and bomber aircraft. From 1962 to 1972 under the NATO nuclear weapons …

The B-28 Certificate of Fitness is required for supervision of Stationary Energy Storage Systems. Stationary storage battery systems are commonly used in office buildings and other …

2025年1月21日 · The Mark 28 was a two-stage radiation-implosion thermonuclear bomb which was designed by the Los Alamos National Laboratory and produced from January 1958 to …

The B28, originally Mark 28, was a thermonuclear bomb carried by U.S. tactical fighter bombers and bomber aircraft. From 1962 to 1972 under the NATO nuclear weapons sharing program, …

North American B-28 Dragon. An order for a new high-altitude medium bomber was put out on 13 February 1940; the XB-28 first flew on 26 April 1942. The XB-28 was based on North …

The W-28 small diameter, light weight ("Class-D") thermonuclear warhead in this bomb became the most versatile and widely used design ever adopted by the United States.

Designed to be Crewed by (5), The B-28 was 57-feet long with a wingspan of 73-feet. Powered (2) Pratt & Whitney R-2800, 18 Cylinder Air Cooled Engines. The ''Dragon'' could achieve an …

2019年4月2日 · Page details technical specifications, development, and operational history of the North American XB-28 (Dragon) High-Altitude, Medium Fast Bomber Prototype including …

The North American XB-28 (NA-63) Dragon was a proposed high-altitude follow-on to the B-25 Mitchell twin-engined medium bomber. Three prototypes were ordered on February 13, 1940. …