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From Wikipedia, the free encyclopedia

Sigma
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

Components

  • 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

Performance

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

See also

Comparable engines

Related lists

References

Notes

  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.

Bibliography

  • 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
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