A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
O-405/6AC-403 | |
---|---|
Type | Piston aircraft engine |
National origin | United States |
Manufacturer | Franklin Engine Company |
First run | 1942 |
The Franklin O-405 (company designation 6AC-403) was an American air-cooled aircraft engine of the 1940s. The engine was of six-cylinder, horizontally-opposed layout and displaced 405 cu in (6.64 L). The power output was between 200 hp (149 kW) and 250 hp (186 kW) depending on variant. The O-405-9 (6ACV-403) was a vertically mounted, fan cooled version for helicopters.
Variants
- 6AC-403 (XO-405-1)
- 200 hp (149 kW) at 2,750 rpm
- 6ACSA-403 (XO-405-3)
- Supercharged, 220 hp (164 kW) at 2,750 rpm
- 6ACGSA-403 (O-405-5)
- Supercharged, geared propeller drive at 0.632:1. 250 hp (186 kW) at 3,200 rpm
- 6ACV-403 (O-405-9)
- Vertically mounted, fan-cooled helicopter version, 245 hp (183 kW) at 3,275 rpm
Applications
- Culver XPQ-15
- Doman LZ-1A
- Doman Pelican
- Fairchild XUC-86B
- Fleetwings XBQ-1
- Kellett XR-8
- Sikorsky R-6
Specifications (6AC-403/XO-405-1)
Data from [citation needed]
General characteristics
- Type: 6-cylinder air-cooled horizontally opposed aircraft piston engine
- Bore: 4.625 in (117.5 mm)
- Stroke: 4.0 in (101.6 mm)
- Displacement: 403.2 in³ (6.6 L)
- Dry weight: 405 lb (184 kg)
Components
- Cooling system: Air-cooled
Performance
- Power output: 200 hp (149 kW) at 2,750 rpm
See also
Comparable engines
Related lists
References
- Notes
- Bibliography
- Gunston, Bill. (1986) World Encyclopedia of Aero Engines. Patrick Stephens: Wellingborough. p. 57
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