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Lioré et Olivier LeO 9

From Wikipedia, the free encyclopedia

LeO 9
Role Fighter
National origin France
Manufacturer Lioré et Olivier
First flight 1923
Number built 1

The Lioré et Olivier LeO 9 was a French monoplane fighter built in 1923.

Design and development

The LeO 9 was a low wing monoplane fighter of all-metal construction using a Joukowski aerofoil.[1] Despite excelling in flight tests, the LeO 9 was not ordered into production.[2]


Data from [3]

General characteristics

  • Crew: one
  • Length: 6.59 m (21 ft 7 in)
  • Wingspan: 10.94 m (35 ft 11 in)
  • Height: 2.18 m (7 ft 2 in)
  • Wing area: 17 m2 (180 sq ft)
  • Airfoil: Joukowski airfoil[1]
  • Gross weight: 1,175 kg (2,590 lb)
  • Powerplant: 1 × Hispano-Suiza 8Fb 8-cylinder V-shaped liquid cooled, 220 kW (300 hp)
  • Propellers: 2-bladed


  • Maximum speed: 280 km/h (170 mph, 150 kn)at sea level
  • Service ceiling: 7,000 m (23,000 ft)


  1. ^ a b "Joukowski Airfoils" (PDF). Caltech. Retrieved 3 February 2019. CS1 maint: discouraged parameter (link)
  2. ^ "Liore et Olivier LeO 9".
  3. ^ "Lioré et Olivier LeO-9 - avion de chasse - Un siècle d'aviation française". Retrieved 2019-01-31. CS1 maint: discouraged parameter (link)
This page was last edited on 8 May 2019, at 03:41
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