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McCutcheon, Kimble D., Wright J-5 "Whirlwind" (PDF). A detailed technical article on the Whirlwind's history and development up to the J-5, from the Aircraft Engine Historical Society. "The Wright J-5 'Whirlwind': An American Engine Which Has Made History", Flight, vol. XIX, no. 24, pp. 390– 392, June 16, 1927. A contemporary technical ...
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 ...
Five-seat cabin monoplane, accommodation for one pilot and four passengers, powered by a 225 hp (168 kW) Wright J-5, J-5A, J-5AB or J-5C Whirlwind radial piston engine. Vega 2 Five-seat cabin monoplane, powered by a 300 hp (220 kW) Wright J-6 Whirlwind radial piston engine.
The main difference was the addition of a lower wing. It was powered by a nose-mounted Skoda-built version of the Wright J-5 Whirlwind radial engine. Two prototypes and an airframe for static tests were ordered by the Aviation Department of the War Ministry in February 1928 (along with the PWS-11 prototypes).
The conventional airplane used a fixed landing gear. The prototype XN3N-1 was powered by a Wright J-5 radial engine. An order for 179 production aircraft was received. [1] Near the end of the first production run the engine was replaced with the Wright R-760-2 Whirlwind radial.
The Wright R-540 Whirlwind was a series of five-cylinder air-cooled radial aircraft engines built by the Wright Aeronautical division of Curtiss-Wright. These engines had a displacement of 540 in³ (8.85 L) and power ratings of around 165-175 hp (123-130 kW).
It had a 9-cylinder air-cooled Polish Skoda Works licence-built Wright Whirlwind J-5A radial engine delivering 240 hp (179 kW) at take-off and 220 hp (164 kW) nominal, driving a two-blade wooden propeller, 2.7 m diameter (in SP-AFA – metal one). 190-litre fuel tank in a fuselage (600 L in SP-AFA). Cruise fuel consumption was 45–50 L/h.
The 9-cylinder Skoda-Wright Whirlwind J-5 air-cooled radial engine was built under licence in the Polish Škoda Works, giving a nominal power of 160 kW (220 hp) and take-off power of 180 kW (240 hp) when driving a two-blade fixed pitch wooden propeller. [2]