R-1820-77 (Q17976873)
9-cylinder radial engine model by Wright
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aliases Wright R-1820-77
 R1820-77
 Wright R-1820-77 Cyclone 9
 Cyclone 9-77
 Wright Cyclone 9-77
 Curtiss-Wright R-1820-77
description 9-cylinder radial engine model by Wright