J.Davilla, A.Soltan French Aircraft of the First World War (Flying Machines)

Brun-Cottan Patrol Flying Boat

  The Brun-Cottan flying boat was constructed in early 1918, intended for coastal patrols, anti-submarine warfare, and even long-range fighter patrols. It was a three-seat biplane powered by two 235-hp Panhard engines. It underwent testing on 8 April 1918 but never entered service.
  The following specifications are the result of testing by the Laboratoire Eiffel.


Brun-Cottan Three-Seat Patrol Flying Boat with Two 235-hp Panhard Engines:
   Span 24.80 m; length 14.60 m; height 4.25 m; wing area 107.50 sq. m
   Empty weight 2,400 kg; loaded weight 4,400 kg
   Maximum speed: 159 km/h at sea level; 152 km/h at 2,000 m; 126 km/h at 4,000 m; climb to 2,000 meters in 15.18 minutes; ceiling 4.300 m; endurance six hours.
   Armament: one machine-gun and four 150-kg bombs
   One built



Brun-Cottan H.B.2 Flying Boat

  A second, larger flying boat was built by Brun-Cottan late in the war. Designated the H.B.2, it had two 350-hp Panhard engines and may have been intended to meet the hydravion bombardement flying boat specification. Built in 1918, the type was undergoing testing in 1919 but, as with the preceding Brun-Cottan flying boat it never entered service.
  A contemporary French report gave these specifications.


Brun-Cottan H.B.2 Two-Seat Flying Boat Bomber with Two 350-hp Panhard Engines
   Span 24.88 m; length 14.60 m; height 4.25 m; wing area 125 sq. m
   Empty weight 2,400 kg; loaded weight 4,400 kg
   Maximum speed: 160 km/h at sea level
   Endurance: 5 hours 10 minutes
   One built