Bréguet Type IV Gnome Omega "1911"

Role Airliner and freighter
Manufacturer Bréguet Aviation
First flight 15 February 1949
Introduction 10 March 1953
Retired 31 March 1971
Primary users Air France / French Air Force
Number built 20

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Bréguet Type IV
Gnome Omega"1911"

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Bréguet Type IV
Gnome Omega"1911"

The Bréguet Type IV was an aircraft built by Bréguet Aviation. It was first flown in 1911, and was the first Bréguet aircraft to be produced in quantity. It was used by the French Army and the British Royal Flying Corps. It is notable for the extensive use of metal in its construction, unusual in an aircraft of its time. The Bréguet Type IV was produced in a number of variants, differing in their seating arrangement and in the engine fitted. Although Bréguet’s earlier aircraft were referred to using a type number, the aircraft produced after the Type III were generally referred to using an airframe number and a letter/number combination denoting the type of engine fitted



Design and development

The Bréguet Type IV was developed from the Bréguet Type III which had appeared during 1910. It was a tractor biplane with a tricycle undercarriage.

Variants and nomenclature


View of R.U.1, clearly showing construction of the aircraft


    • U.1 powered by an 80 hp (60 kW) Canton-Unné
    • U.2 powered by an 80 hp (60 kW) Canton-Unné
    • D.1 powered by a 100 hp (75 kW) Dansette
    • O.1 powered by an 80 hp (60 kW) Le Rhône

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Bréguet Type IV Gnome Omega"1911"

  • G, later G.1 powered by a 50 hp (37 kW) Gnome Omega
  • G.2 powered by a 70 hp (52 kW) Gnome
  • G.3 powered by a 100 hp (75 kW) Gnome
    Gnome Double Omega
  • G.4 powered by a 160 hp (120 kW)
    Gnome Gnome Double Lambda
  • R.1 powered by a 50 hp (37 kW) REP
  • R.2 powered by a 70 hp (52 kW) REP


Crew: 1
Capacity: 1

Length: 8.5 m (28 ft)

Upper wingspan: 13.94 m (45 ft 9 in)

Lower wingspan: 8.74 m (28 ft 8 in)

Wing area: 30.43 m2 (327.5 sq ft)

Propellers: 2.4 m (8 ft) diameter

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The French Air Force acquired the three pre-producaBrequet IV_tion Br.761S aircraft, these and the six Sahara aircraft acquired from Air France provided the French Air Force with a valuable transport fleet for moving personnel and materials to the Pacific nuclear testing areas. The Sahara fleet was retired in 1972.