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The Martin XB-14 was an experimental version of the Martin B-10, produced to test out the new Twin Wasp engines.
The B-10 was the first modern monoplane bomber to enter USAAC service, and was a mid wing twin engine aircraft, normally powered by two Wright R-1820-33 Cyclone radial engines.
The XB-14 was powered by two 800hp Pratt & Whitney R-1830-9 Twin Wasp radial engines, a 14-cylinder twin row radial that went on to power many of the most important US aircraft of the Second World War. It was produced to test the new engine, and was later converted back to the B-10 standard.
Engine: Pratt & Whitney R-1830-9 Twin Wasp radial engines
Power: 800hp
Crew: 3 or 4 (nose gunner, pilot, radio operator/ rear gunner)
Span: 70ft 6in
Length: 44ft 9in
Height: 15ft 5in
Guns: Three 0.3in machine guns, in nose and rear turrets and ventral position
Bomb load: 2,260lb