Powerplant: 2 × Pratt & Whitney R-2180-A Twin Hornet turbo supercharged radial engines, 1,200 hp (890 kW) each
Maximum speed: 220 mph (350 km/h, 190 kn) at 10,000 feet (3,000 m)
Cruise speed: 190 mph (310 km/h, 170 kn)
Range: 1,960 mi (3,150 km, 1,700 nmi) with 2,200 pounds (1,000 kg) of bombs
Combat range: 600 mi (970 km, 520 nmi) with 10,000 pounds (4,500 kg) of bombs
Service ceiling: 25,000 ft (7,600 m)
Time to altitude: 10 minutes to 10,000 feet (3,000 m)
Guns: Five .30-calibre machine guns, mounted in single turrets in the nose and dorsal positions, and single manually operated mounts in the waist and ventral positions.
Bombs: Up to 10,000 pounds (4,500 kg) in an internal bay.
The North American XB-21 (manufacturer’s model designation NA-21) and sometimes referred to by the name “Dragon”, was a prototype bomber aircraft developed by North American Aviation in the late 1930s, for evaluation by the United States Army Air Corps.
Evaluated against the Douglas B-18 Bolo, it was found to be considerably more expensive than the rival aircraft, and despite the ordering of a small number of evaluation aircraft, only the prototype was ever built.