Gnome Omega

The Gnome 7 Omega (commonly called the Gnome 50 hp) is a French seven-cylinder, air-cooled aero engine produced by Gnome et Rhône.[2] It was shown at the Paris Aero Salon held in December 1908 and was first flown in 1909. It was the world's first[1] aviation rotary engine produced in quantity. Its introduction revolutionized the aviation industry[3] and it was used by many early aircraft. It produced 37 kW (50 hp) from its 8 L (490 cu in) engine capacity.[4] A Gnome Omega engine powers the 1912 Blackburn Monoplane, owned and operated by the Shuttleworth Collection, the oldest known airworthy British-designed aeroplane worldwide.[5] A two-row version of the same engine was also produced, known as the Gnome 14 Omega-Omega or Gnome 100 hp. The prototype Omega engine still exists, and is on display at the United States' National Air and Space Museum.[2]

sectional views of the Gnome Omega


Gnome 7 Omega
Single-row 7-cyl. original version; 50 hp (37 kW).
Gnome 14 Omega-Omega
Two-row, 14-cylinder version using Omega cylinders; 100 hp (75 kW).


Gnome 7 Omega

Gnome Omega-powered airworthy Blackburn Monoplane of the Shuttleworth Collection
Gnome 14 Omega-Omega, as shown in a 1913 Gnome catalog.

Gnome 14 Omega-Omega

Engines on display

Specifications (7 Omega)

Brown staining of the Shuttleworth example caused by burnt castor oil

Data from Lumsden.[4]

General characteristics



  • Power output: 37 kW (50 hp) at 1,200 rpm

See also

Comparable engines

Related lists



  • Hurley, Nick (2018). "Gnome 7 Omega". New England Air Museum. Archived from the original on August 18, 2018. Retrieved Aug 17, 2018.CS1 maint: ref=harv (link)
  • Lumsden, Alec (2003). British Piston Engines and their Aircraft. Marlborough, Wiltshire, UK: Airlife Publishing. ISBN 1853102946.CS1 maint: ref=harv (link)

Further reading

  • Moteurs d'Aviation Gnome (PDF) (in French). 49, Rue Lafitte, Paris: Société Des Moteurs Gnome. 1910. Retrieved 19 June 2018.CS1 maint: location (link)

External links