To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

From Wikipedia, the free encyclopedia

Gnome Sigma - Moteurs Gnome October 1913.png
Gnome 7 Sigma as shown in a 1913 Gnome catalog
Type Rotary aero engine
National origin France
Manufacturer Société des Moteurs Gnome

The Gnome 7Σ Sigma (commonly called the Gnome 60 hp) is a French seven-cylinder, air-cooled rotary aero engine.[1]

The Sigma produced 60 hp (45 kW) from its capacity of 9.5 l (579.73 cu in).

Specifications (7 Sigma)

Longitudinal elevation of Gnome 7 Sigma, from 1913 Gnome catalog
Longitudinal elevation of Gnome 7 Sigma, from 1913 Gnome catalog

Data from Société Des Moteurs Gnome[2]

General characteristics


  • Valvetrain: pushrod operated overhead exhaust valves plus pressure-driven inlet valves located in the piston crowns[3]
  • Fuel system: a single static Bloctube carburretor feeding the crankcase
  • Fuel type: 40 / 50 octane gasoline
  • Oil system: pressure-fed total loss, castor oil
  • Cooling system: Air-cooled
  • Reduction gear: Direct drive, right-hand tractor, left-hand pusher


  • Power output: 45 kW (60 hp) at 1,200 rpm

See also

Comparable engines

Related lists



  1. ^ a b National Air and Space Museum - Gnome Omega Retrieved: 11 November 2010.
  2. ^ Moteurs Gnome (PDF) (in French). Paris: Société Des Moteurs Gnome. October 1913. pp. 6–10. Retrieved 26 June 2018. CS1 maint: discouraged parameter (link)
  3. ^ a b Nahum, Andrew (1999). The rotary aero engine. London: Science Museum. pp. 12–14. ISBN 1-900747-12-X.
  4. ^ Murphy, Justin D. (2005). Military aircraft, origins to 1918 : an illustrated history of their impact. Santa Barbara, Calif. [u.a.]: ABC-CLIO. pp. 32–33. ISBN 1-85109-488-1.


  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

External links

This page was last edited on 8 May 2019, at 00:47
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.