R-1820-F (Q18199081)
9-cylinder radial engine model by Wright
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aliases R1820F
 Pratt & Whitney R-1820-F
 Cyclone F
 Wright R-1820-F
 Wright R-1820-F Cyclone 9
 Cyclone 9F
 Wright Cyclone 9F
 Curtiss-Wright R-1820-F
description 9-cylinder radial engine model by Wright