Douglas YB-11

From Wikipedia, the free encyclopedia

Douglas YB-11
Type	Seaplane bomber
Manufacturer	Douglas Aircraft Company
Status	Did not enter production
Primary user	United States Army Air Corps
Number built	1
Developed from	Douglas XP3D

The Douglas YB-11 was a bomber aircraft designed for the United States Army Air Corps. Although a prototype was built, it did not enter production.

In the early 1930s, the U.S. Army ordered the development of an amphibious observation plane, designated the Douglas YO-44, based on the United States Navy's Douglas XP3D seaplane. When the Army accepted the YO-44, it was redesignated YOA-5, 'observation amphibian model 5'. A version of the YOA-5 was converted to bomber duty and designated the YB-11.

[edit] Specifications (YB-11)

General characteristics

• Length: 69 ft 9 in (21.3 m)
• Wingspan: 89 ft 9 in (27.4 m)
• Height: 22 ft 0 in (6.7 m)
• Wing area: 1,101 ft² (102.3 m²)
• Empty weight: 14,038 lb (6,368 kg)
• Loaded weight: 20,000 lb (9,000 kg)
• Max takeoff weight: kg (lb)
• Powerplant: 2× Wright R-1820-45 "Cyclone" radials, 800 hp (600 kW) each

Performance

• Maximum speed: 169 mph (147 knots, 272 km/h)
• Cruise speed: 152 mph (132 knots, 245 km/h)
• Stall speed: 75 mph (65 knots, 120 km/h)
• Range: mi (nm, km)
• Service ceiling: 18,900 ft (5,760 m)
• Rate of climb: 770 ft/min (3.9 m/s)
• Wing loading: 18 lb/ft² (89 kg/m²)
• Power/mass: 0.080 hp/lb (130 W/kg)

Armament

• Guns: 3× .30 in (7.62 mm) machine guns

[edit] External links

• USAF Museum description of YB-11
• Encyclopedia of American aircraft

[edit] Related content

 

 

Designation sequence

• B- series: XB-8 - Y1B-9 - B-10 - YB-11 - B-12 - XB-13 - XB-14 - XB-15
• OA- series: OA-2 - OA-3 - OA-4 - O-5 - OA-6 - OA-7 - OA-8
• O- series: Y1O-41 - O-42 - Y1O-43 - XO-44 - O-45 - O-46 - O-47

Related lists

• List of bomber aircraft
• List of military aircraft of the United States
• List of seaplanes and flying boats

See also