J.Forsgren Swedish Military Aircraft 1911-1926 (A Centennial Perspective on Great War Airplanes 68)

FVM Triplanet

  Using the fuselage of a discarded Thulin L, Henry Kjellson and Gosta von Porat constructed a two-seat triplane, intended for basic flight training. The airplane was given the name Triplanet (ie The Triplane), and the serial number 831. Powered by a 90 h.p. Thulin A rotary engine, the Triplanet was first flown in September 1918 by Nils Rodehn. Although a number of Thulin A engines had been purchased for the possible series production of the Triplanet, it was quickly discovered that this type of engine provided insufficient power. Tragically, the Triplanet crashed on April 12, 1919 after entering a spin at an altitude of 200 metres, killing Lieutenants Gosta D:son Carlsson and Folke Soderlindh. As a result, plans to build additional aircraft were cancelled.

FVM Triplanet Technical Data and Performance Characteristics
   Engine: 1 x 90 h.p. Thulin A rotary engine
   Length: 6,50 m
   Wingspan: 9,00 m
   Height: 2,96 m
   Maximum take-off weight: 990 kg
   Maximum speed: 150 km/h
   Armament: -