J.Davilla Italian Aviation in the First World War. Vol.2: Aircraft A-H (A Centennial Perspective on Great War Airplanes 74)

Caproni Prewar Designs

Caproni Ca. 26, Ca. 27, Ca. 28, and Ca. 29

  Caproni continued to experiment with variable incidence wings and designed a series of biplanes with both land and seaplane undercarriages. The wing incidence could be adjusted manually or automatically. The various proposed developments also had different wing profiles.
  The fuselage was mounted above the front spar of the lower wing and could move around this axis. As with the previous Caproni designs, the position of the horizontal tailplane was linked to these changes to ensure stability.
  One example was built in 1914, equipped with an 80 hp Gnome rotary engine, but the outbreak of the war led to a halt in the project.
  Only the dimensions of the built specimen are known: wingspan, 13.50 m; length, 8.50 m; height, 3.50 m; wing area, 52 square meters.