An engine designed and manufactured at the Pratt & Whitney plant in East Hartford, Connecticut, founded in 1925 by former employees of another well-known engine manufacturer — Wright.
This is the most widely produced engine of this configuration in the history of aviation. Its production began in 1934. The museum specimen represents the first version of the engine with a two-speed supercharger from 1939.
This solution increased the engine’s capability for use in aircraft operating at higher altitudes. These engines were used in the Grumman F4F Wildcat, Vickers Wellington IV, Douglas A-20 Havoc, Douglas C-47B Dakota and Bristol Beaufort aircraft.
| Configuration | 14-cylinder twin-row radial |
| Cooling | air |
| Compression ratio | 6.7 |
| Displacement | 30 l |
| Propeller reduction | 0.56 |
| Weight | 660 kg |
| Maximum power | 1200 hp at 2700 rpm |
| Rated power | 1100 hp at 2550 rpm |
