B-10 file photo [4717]


CountryUnited States
ManufacturerGlenn L. Martin Company
Primary RoleMedium Bomber
Maiden Flight16 February 1932


ww2dbaseThe B-10 bombers began their design life as Model 123/XB-10 of the Glenn L. Martin Company of Baltimore, Maryland, United States. The prototype housed a crew of four (pilot, copilot, nose gunner, and fuselage gunner), though for the production version the size of the crew was reduced to three. They were revolutionary in design with all-metal construction, closed cockpits, rotating gun turrets, retractable landing gear, internal bomb bay, and full engine cowlings; these features would become standard for bombers in the decades to come. In 1932, Martin received the Collier Trophy for designing the XB-10. On 20 Mar 1932, little more than a month after the maiden flight, the United States Army Air Corps evalcuated the bomber, and on 17 Jan 1933 an order for 48 units were placed. B-10 bombers entered service in Nov 1934. In early 1935, the US Army ordered an additional 103 aircraft designated B-10B; when they were delivered in Jul that year, they were deployed, among other places, to the Panama Canal Zone and the Philippine Islands. B-10B bombers were 1.5 times faster than any biplane bomber that they replaced, and they were also faster than many contemporary fighters. In 1934 and 1935, the successor design, Model 146, entered into the US Army's long distance bomber design competition, but was defeated by Douglas' B-18 and Boeing's B-17 designs.

ww2dbaseIn addition to the Model 123/B-10 design, Martin also produced the Model 139 design for export purposes, though the US Army retained the rights to the Model 139 design. With upgraded engines, 6 Model 139 bombers were sold to Siam in Apr 1937 and 20 to Turkey in Sep 1937. Other countries that operated Model 139 bombers include the Netherlands, Argentina, and Nationalist China.

ww2dbaseB-10 bombers were seen at the start of the Pacific War. When the Japanese struck Pearl Harbor, three were present. When they were used against the Japanese invasion forces by the Americans in the Philippine Islands and the Dutch in the Dutch East Indies, they proved to be inadequate against modern Japanese fighters. Thus, they were quickly replaced by other designs. In fact, by the time the Pacific War began, the United States Army were already beginning the process to replace them with B-18 Bolo bombers.

ww2dbaseDuring the design's production life, 342 units were built. Of that number, 117 were operated by the US Army and over 200 were exported.

ww2dbaseSource: Wikipedia.

Last Major Revision: Sep 2007


MachineryTwo Wright R-1820-33 Cyclone radial engines
Armament3x7.62mm Browning machine guns, 1,030kg of bombs
Span21.50 m
Length13.60 m
Height4.70 m
Wing Area63.00 m²
Weight, Loaded6,680 kg
Weight, Maximum7,440 kg
Speed, Maximum346 km/h
Speed, Cruising294 km/h
Service Ceiling7,380 m
Range, Normal2,200 km


Model 123 prototype aircraft in flight, 1932; this design eventually produced the B-10 bombersB-10 bomber at rest, pre-26 Feb 1941B-10B bomber in flight, circa early- to mid-1935B-12 bomber at March Field, California, United States, 19 Nov 1935
See all 12 photographs of B-10 Medium Bomber

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Visitor Submitted Comments

1. Johnny says:
30 May 2011 08:08:36 AM

Looking for ID help of an B-10/12 unit emblem,the emblem is on a round background divided by a half globe in lower and sky upper, in center is the "fuselage" of a Douglas OA-3 with large "Bird" type wings upswept, to the right of the aircraft is the foramtion of either the BIG/Little Dipper and a single star to the left of aircraft, there is an aerial bomb falling below the aircraft on the right . this emblem is on the nose of two B-10/12 aircraft in photo that has men standing in front of them with the patch of the 30th Bombardment squadron which was part of the 19th Bombardment Group, i think it may have been atMarch Field or possibly taken on the "Alaskan" flight of B-1o/12's that flew there, if anyone recognizes this emblem Please contact me , thank you very much !!!!!!!!!
2. Anonymous says:
15 Feb 2012 10:27:47 AM

we actually found a original b10 bomber blueprint. took it to two different museums and they verified it was a original...nice piece of history we own :)

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B-10 Medium Bomber Photo Gallery
Model 123 prototype aircraft in flight, 1932; this design eventually produced the B-10 bombers
See all 12 photographs of B-10 Medium Bomber

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