Franklin O-805

The Franklin O-805 (company designation 12AC) was an American air-cooled aircraft piston engine, designed in the mid-1940s and was to be used in radio-controlled pilotless drones that were to be guided from an accompanying control plane. Due to project requirement changes and cancellations the engine was not produced.[1]

O-805/12AC
Franklin O-805 on display at the National Museum of the United States Air Force
Type 12-cylinder horizontally opposed piston engine
Manufacturer Franklin Engine Company
First run c.1945

A smaller displacement 12-cylinder Franklin engine of 1941 was known as the O-595 or 12AC-596.

Variants

O-805
12AC-806
450 hp (336 kW)0
12ACG-806 (XO-805-1)
456 hp (340 kW) at 3,200 rpm, geared to 0.632:1.
12ACGSA-806 (XO-805-3 and O-805-5)
500 hp (373 kW) at 3,200 rpm, supercharged and geared to 0.632:1 (XO-805-3), or to 0.587:1 (O-805-5).

O-595
12AC-596
300 hp (224 kW) at 2,600 rpm
12ACG-596
350 hp (261 kW) at 3,500 rpm

Applications (intended)
  • Interstate XBQ-5
  • Interstate XTD2R-1

Survivors

Specifications (12ACGSA-806/XO-805-3)

General characteristics

Components

Performance

  • Power output: 500 hp (373 kW) at 3,200 rpm
gollark: Definitely between those.
gollark: Maybe 815π.
gollark: 3.
gollark: Your parent is an electrical engineer? Cool.
gollark: Just unhurt your arm.

See also

Related lists

References
Notes
  1. NMUSAF (June 8, 2015), Franklin O-805-2, National Museum of the United States Air Force
  2. http://neam.org/index.php?option=com_content&view=article&id=1073
  3. http://bringatrailer.com/2016/08/29/13-liter-ww2-drone-engine-super-rare-franklin-0-805/
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