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The Wright R-790 Whirlwind was a series of nine-cylinder air-cooled radial aircraft engines built by Wright Aeronautical Corporation, with a total displacement of about 790 cubic inches (12.9 L) and around 200 horsepower (150 kW). These engines were the earliest members of the Wright Whirlwind engine family.
Wright's J-1 was the first engine in its nine-cylinder R-790 Whirlwind series and was quickly followed by the J-3, J-4, J-4A, J-4B, and finally the popular and successful J-5 of 1925. In 1928, Wright replaced the R-790 series with the J-6 Whirlwind family, in which a supercharger was added to boost engine power and the cylinders were enlarged ...
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Wright Aeronautical (1919–1929) was an American aircraft manufacturer headquartered in Paterson, New Jersey. [1] It was the successor corporation to Wright-Martin. [1] It built aircraft and was a supplier of aircraft engines to other builders in the golden age of aviation. [1]
Two-seat primary trainer biplane, powered by a 220 hp (160 kW) Wright R-790 Whirlwind (J-5) radial piston engine. 179 were built. XN3N-2 One prototype only (Bureau number 0265) powered by a 240 hp (180 kW) Wright R-760-96 Whirlwind (J-6-7) radial piston engine. XN3N-3 One production N3N-1 (0020) converted into a 'dash three' prototype. N3N-3
The NK was an open-cockpit two-seat biplane with a convertible wheel or float landing gear. It was powered by a 220 hp (164 kW) Wright R-790 Whirlwind.The company prototype designated the Pup was entered into a United States Navy design competition for a trainer and was awarded a contract for three prototypes designated XNK-1.
The seven-cylinder version was originally known as the J-6 Whirlwind Seven, or J-6-7 for short. The U.S. government designated it as the R-760; Wright later adopted this and dropped the J-6 nomenclature. Like all the members of the J-6 Whirlwind family, the R-760 had larger cylinders than the R-790.
Seven aircraft for Cuban Air Force powered by 235 hp (175 kW) Wright R-790 Whirlwind, delivered 1939–1940 [9] Model A73L3 Improved version for the Philippines, three built [10] Stearman 75 (or X75) Evaluated by the U.S. Army as a primary trainer, the X75L3 became the PT-13 prototype. Variants of the 75 formed the PT-17 family. Stearman 76