Martin B-57B Canberra. After the Korean War began in 1950, the U.S. Air Force looked for a jet powered medium bomber to quickly replace the aging, propeller driven Douglas B-26 Invader. In March 1951 the USAF contracted with Martin to build the British Canberra in the United States under license. The Martin built B-57 made its first flight in July 1953, and when production ended in 1959, a total of 403 Canberras had been produced for the USAF. TECHNICAL NOTES: Armament: Eight .50-cal. M3 machine guns or four 20mm M39 cannons and approx. 7,500 lbs. maximum of internal and external stores Engines: Two Wright J65-W-5 turbojets of 7200 lbs. static thrust each Maximum speed: 570 mph Cruising speed: 450 mph Range: 2,000 miles Ceiling: 49,000 ft. Span: 64 ft. Length: 65 ft. 6 in. Height: 15 ft. 6 in. Weight: 58,800 lbs. maximum
TECHNICAL NOTES:
Armament: Eight .50-cal. M3 machine guns or four 20mm M39 cannons and approx. 7,500 lbs. maximum of internal and external stores
Engines: Two Wright J65-W-5 turbojets of 7200 lbs. static thrust each
Maximum speed: 570 mph
Cruising speed: 450 mph
Range: 2,000 miles
Ceiling: 49,000 ft.
Span: 64 ft.
Length: 65 ft. 6 in.
Height: 15 ft. 6 in.
Weight: 58,800 lbs. maximum