Engineering:Bellanca 77-140

Short description: American bomber aircraft

77-140 Bomber
Role	Light Bomber
Manufacturer	Bellanca
First flight	1934
Primary user	Colombian Air Force

The Bellanca 77-140 Bomber was a bomber aircraft built in small numbers in the United States in the 1930s. It was a derivative of Bellanca's successful Aircruiser civil transport in which the Aircruiser's single, nose-mounted engine was replaced by twin engines on the upper wing. The United States military were not interested in the type, but the Colombian Air Force bought a small number, including a float-equipped version dubbed the 77-320 Junior. This version also differed from the landplane in having a fully enclosed nose turret in place of the open turret of the 77-140.

Specifications (77-140)

77-320 floatplane of the Colombian Air Force

General characteristics

• Crew: two, pilot and gunner
• Length: 40 ft 0 in (12.20 m)
• Wingspan: 77 ft 0 in (23.48 m)
• Height: 14 ft 0 in (4.26 m)
• Wing area: 129 sq ft (12.0 m²)
• Gross weight: 12,250 lb (5,560 kg)
• Powerplant: 2 × Wright R-1820 , 650 hp (485 kW) each

Performance

• Maximum speed: 180 mph (290 km/h, 160 kn)
• Range: 700 mi (1,120 km, 610 nmi)
• Service ceiling: 20,000 ft (6,100 m)

Armament

• 2 × .30 caliber machine guns
• 2,200 lb (1,000 kg) of bombs

Users

Colombia

• Colombian Air Force

References

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 150. 
• aerofiles.com
• Fuerza Aérea Colombiana

• Flugzeug Fibel