Wright R-975 Whirlwind
R-9 PISTON AIRCRAFT ENGINE, FINAL NINE CYLINDER SERIES OF THE WHIRLWIND
R-975; Wright J-6-9; Wright J-6-9 Whirlwind; Wright J6-9; Continental R-975; Continental R9-A; Hispano-Suiza 9Q; Hispano-Wright 9Q; Hispano-Wright 9Qa; Hispano-Wright 9 Q; Hispano-Suiza 9Qdr; Hispano-Suiza 9Qd; Hispano-Suiza 9Qb; Hispano-Suiza 9Qa; Hispano-Wright 9 Qd; Wright R-975E; Wright R-975-3; Wright R-975-E3 Whirlwind; Continental GR-9A; FNM R-975; Fabrica Nacional de Motores R-975; Fábrica Nacional de Motores R-975; Wright Whirlwind R-975; Hispano 9Qb; Hispano-Suiza 9Qc; Wright R-975-E3; Wright R-975-20; Continental GR9-A; Wright R-975; Wright R-975E-2; Wright R-975-7 Whirlwind; Wright R-975-53 Whirlwind; Wright R-975-28 Whirlwind; Wright R-975E-1 Whirlwind; Wright R-975E-1; Wright R-975E Whirlwind; Wright J-6-9-300 Whirlwind; Continental R-975-46A
The Wright R-975 Whirlwind was a series of nine-cylinder air-cooled radial aircraft engines built by the Wright Aeronautical division of Curtiss-Wright. These engines had a displacement of about and power ratings of .