Potez Potez XI

Flight, January 1923

THE PARIS AERO SHOW 1922

HENRY POTEZ, Levallois-Perret (Seine).

   As one of the younger firms of the French aircraft industry, Henry Potez is gradually working towards a prominent position by sheer commonsense design and good workmanship. A number of Potez machines have been in use on the Paris-Prague line, and have, it is believed, given very good results, although not being of the latest type. The military Potez machines have also come to be regarded as sound, reliable aeroplanes, in which there is little in the way of brilliancy, but a great deal in the matter of careful painstaking work.
   Three machines were exhibited at Paris, of which one was a two-seater fighter of very usual design, but built almost entirely of metal. As, however, the machine was not, as so many other metal machines, shown in skeleton, it was not possible to find out very much about the detail construction. The machine was of the type XI c.a.p.-2, with Lorraine engine and Rateau supercharger. The front and rear portions of the fuselage are of metal construction, the rear portion having angle-section longerons. The central part is of ordinary wood construction, with ply-wood covering. It is understood that the wings have Duralumin spars of rolled section, but no information is available as regards details.
   The characteristics of the Henry Potez XI c.a.p.-2 are as follows: Length, 9-08 m. (29 ft. 10 ins.); span, 12-7 m. (41 ft. 8 ins.); wing area, 44 sq. m. (474 sq. ft.); weight empty, 1,250 kg. (2,750 lbs.); weight of fuel, 300 kg. (660 lbs.); useful load, 350 kg. (770 lbs.); total loaded weight, 1,900 kg. (4,180 lbs.); power loading, 11-3 lbs./h.p.; wing loading, 8-82 lbs./sq. ft.; speed near ground, 220 km. (136 m.p.h.); speed at 4,000 m. (with supercharger), 136 m.p.h.; ceiling, 8,000 m. (26,300 ft.).
<...>