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The Martin XB-16 was designed by Martin as a long range bomber capable of carrying a 2,500-pound bomb load 5,000 miles. The aircraft was similar in size to the Boeing XB-15, but was to use four Allison V-1710 liquid-cooled inline engines instead of air-cooled radial engines normally used on bombers of the 1930s. The aircraft would have had a wing span of about 140 feet and an estimated top speed of 235 mph.
In 1935 Martin revised the XB-16 design making the aircraft much bigger. The wing span was increased to 173 feet and six V-1710 engines were used; four on the leading edge of the wing (tractors) and two on the trailing edge (pushers). This version had an estimated range of 3,300 miles carrying 2,500 pounds of bombs and a crew of 11 men.
||Large bomber design; canceled
Note: Two designs were assigned the XB-16 designation.
TECHNICAL NOTES (as designed, final version):
Armament: 2,500 lbs. of bombs
Engines: Six Allison V-1710-3 of 1,000 hp each
Maximum speed: 190 mph
Cruising speed: 140 mph
Range: 3,300 miles with 2,500 lb. bomb load
Span: 173 ft. 0 in.
Length: 115 ft. 0 in.
Weight: 104,880 lbs. gross
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