Bernard Ferbois V.2

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The Bernard Ferbois V.2 was an aircraft produced by the French manufacturer Sociéte Industrielle des Métaux et de Bois (SIMB) based in La Courneuve .

It was a middle-decker with a fixed tail landing gear , which was made entirely of wood especially for the speed race over 300 km, the Coupe Internationale Beaumont in 1924. The fuselage frame consisted of four longitudinal spars and a number of frames and was planked with plywood. The main landing gear had rubber suspension, as was usually the case at the time. The cantilevered wings of small thickness had a trapezoidal plan and a V-position of 1.5 °. Two box spars with ribs made of plywood, which were made easier by recesses and reinforced with strips made of red fir, provided stability. The wing was planked with plywood and additionally covered with varnished fabric. Ailerons were used for roll control. A water-cooled W12 Hispano Suiza 50 with 450 hp was chosen as the drive , which was cooled with the help of six lamblin coolers under the wing.

The good flight performance made an attack on the world speed record for land aircraft seem promising. On October 8, 1924, Bernard test pilot Adjutant Florentin Bonnet made an attempt, but only a French record could be achieved with 393.340 km / h. The French government became aware of the record attempt and supported the company. The engine was 620 hp at 2200 min -1 brought, the oil cooler and the accounted Holzluftschraube by a Duralluftschraube of Reed-Levasseur replaced. The engine cover has been reduced in its frontal area and made more affordable overall. The same applied to the now three-part windshield. The wing angle was changed from 0 ° to -0.5 ° and the wingspan was reduced by 0.8 m.

On December 12, 1924, Bonnet attempted a new record in Istres , which meant a new world speed record for land aircraft with an average of 448.171 km / h.

There is no reliable information about the whereabouts of the record machine.

Technical data (world record execution)

  • Span: 9.10 m
  • Length: 6.80 m
  • Height: 1.64 m
  • Area: 10.80 m²
  • Takeoff weight: 1200 kg
  • Engine: a Hispano-Suiza 50, W12 cylinder with 620 hp at 2200 min -1

source

  • Erich H. Heimann: The fastest aircraft in the world , Motorbuchverlag 1978, ISBN 3-87943-540-5