Images from Kimble D. McCutcheon (please distribute freely)
This gallery highlights some of the rare and exotic
experimental engine concepts of Pratt & Whitney.
| P&W PT1
Free-piston gas generator intended for use with P&W's first gas turbine. |
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| P&W PT1
A turboprop, the PT1 never flew. |
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| P&W PT1
The PT1 was P&W's last liquid-cooled engine. |
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| | P&W R-1535 |
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| P&W R-2060
Liquid-cooled 20-cylinder built for US Army Air Coprs in the early 1930s. |
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| P&W R-2060
The "Yellow Jacket" suffered from fuel mixture distribution problems. |
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| P&W R-2060
P&W's first liquid-cooled engine never flew. |
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| P&W R-2180
"Twin Hornet" of 1938 was upstaged by the R-2800. |
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| P&W R-2180E
The R-2180E, circa 1949, shared parts with the R-4360. |
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| | P&W R-2180E |
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| P&W R-2270
First run in 1930, P&W's first two-row radial. |
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| P&W R-2270
The R-2270 was built from Wasp and Hornet parts. |
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| | P&W R-2270 |
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| | P&W R-2270 |
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| | P&W R-2270 |
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| | P&W R-2270 |
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| P&W R-2800
This B Model has an early torque nose case. |
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P&W R-2800
D Model cylinder with reversed cooling air flow was only used on Northrop XP-56. |
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| P&W R-2800
Experimental Aftercooler. |
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| P&W R-2800
Experimental Aftercooler. |
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| P&W R-2800
Connecting rods for Models A through E. |
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| P&W R-4360
Cooling fan provisions for B-36. |
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| P&W R-4360 VDT
Curtiss-Wright R-3350 used power recovery turbines geared to the crankshaft. P&W used exhaust energy for supercharging and jet thrust in the Variable Discharge Turbine. |
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| | P&W R-4360 VDT |
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| P&W R-4360 VDT
With intercoolers, turbines, compressors and ducting, the VDT was as large as the engine. |
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| | P&W XH-3730 |
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| | P&W XH-3730 |
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| P&W XH-2600
Also called the X-1800, this 24-cylinder liquid-cooled engine was built for the US Army Air Corps. |
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| | P&W XH-2600 |
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| P&W XH-3730
The 24-cylinder liquid-cooled XH-3730 was intended for the US Navy. |
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