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Wright R-760

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Template:Infobox Aircraft Engine

The Wright R-760 Whirlwind was a series of seven-cylinder air-cooled radial aircraft engines built by the Wright Aeronautical division of Curtiss-Wright in the 1930s. These engines had a displacement of 756 in³ (12.4 L) and a power rating of up to 350 hp (261 kW).[1]

Design and development

Wright first introduced the J-6 Whirlwind family in 1928. This family, which had larger cylinders than the previous J-5, originally included varieties with seven and nine cylinders. In 1929, Wright introduced a seven-cylinder version, designated as R-760 by the US government.

Wright expanded the cylinder bore to 5.0 in (127 mm). The first engine of this series, the R-760, had fewer cylinders than the older Whirlwinds but was similar in displacement and power. Wright later followed it with the larger nine-cylinder R-975 and the smaller five-cylinder R-540, providing a range of power levels while using the same basic design.

Variants

  • J-6-7 (R-760): 225 hp (168 kW) at 2,000 RPM.
  • R-760E: 250 hp (186 kW) at 2,000 RPM. Higher power from improved cylinder head.
  • R-760E-1: 285 hp (213 kW) at 2,100 RPM. Higher compression ratio.
  • R-760E-2: 320 hp (239 kW) at 2,200 RPM, 350 hp (261 kW) at 2,400 RPM for takeoff. Increased supercharging, slightly higher compression ratio.
  • R-760E-T: 235 hp (175 kW) at 2,000 RPM. Unsupercharged version of R-760E-1 for trainer aircraft.

Applications

Specifications (R-760 E-2)

Template:Pistonspecs

See also

Related development

Related lists

See also

References

Notes

  1. Gunston 1989, p.181.

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
  • Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1989. ISBN 0-517-67964-7

External links

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This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Wright R-760".