The Gnome-Rhône 7K Titan Major was a seven-cylinder 370 hp (270 kW) air-cooled

radial engine The radial engine is a reciprocating engine, reciprocating type internal combustion engine, internal combustion engine configuration in which the cylinder (engine), cylinders "radiate" outward from a central crankcase like the spokes of a wheel. ...

, that started life as an enlarged

Gnome-Rhône 5K The Bristol Titan was a British five-cylinder air-cooled radial engine, designed and built by the Bristol Aeroplane Company in the late 1920s. It had the same size cylinders as the earlier Bristol Mercury engine, (displacing ), and produced ...

with two extra cylinders.

Development

The Gnome-Rhône 5K was itself a licensed version of the

Bristol Titan The Bristol Titan was a British five-cylinder air-cooled radial engine, designed and built by the Bristol Aeroplane Company in the late 1920s. It had the same size cylinders as the earlier Bristol Mercury engine, (displacing ), and produced ...

. The 7K is very comparable to the

Bristol Neptune The Bristol Neptune was a seven-cylinder air-cooled radial engine developed in 1930. It had the same size cylinders as the earlier Mercury and Titan engines, 5.75 in (146 mm) x 6.5 in (165 mm) which gave a displacement of 1,182 cu ...

seven-cylinder engine since they used the same technology.Gunston 1989, p.74. The 7K was followed by the larger and more powerful nine-cylinder 550 hp (405 kW)

Gnome-Rhône 9K The Gnome-Rhône 9K Mistral was a nine-cylinder 550 hp (405 kW) to 700 hp air-cooled radial engine, that started life as an enlarged Gnome-Rhône 7K with two extra cylinders. Design and development The Gnome-Rhône 7K itself was ...

Mistral. Gnome-Rhône later responded to the need for a more powerful engine by developing the 7K into a two-row version that became the Gnome-Rhône14K Mistral Major.

Variants

;IAM K7:Licence production in

Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...

by Industrija Aeroplanskih Motora- Rakovica (IAM). ;IAR 7K:Licence production in

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

Industria Aeronautică Română Industria Aeronautică Română (IAR) (now IAR S.A. Brașov), or Romanian Aeronautic Industry in English, is a Romanian aerospace manufacturer. It is based in Ghimbav, near Brașov, Romania. IAR was founded in 1925 with the aid of the Romanian g ...

(IAR).

Applications

Specifications (7Kd)

References

Notes

Bibliography

* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. {{DEFAULTSORT:Gnome-Rhone 7K 1920s aircraft piston engines Aircraft air-cooled radial piston engines 7K