• Thumbnail for Radial engine
    still firmly fastened to the crankcase's frontside, as with regular umlaufmotor German rotaries. By the end of the war the rotary engine had reached...
    36 KB (4,678 words) - 00:08, 17 May 2024
  • engine was also produced by the Oberursel firm as the Oberursel U.0 Umlaufmotor (the generic German term for a rotary engine) as their first-ever powerplant...
    9 KB (1,270 words) - 08:08, 14 August 2024
  • Thumbnail for Fokker A.I
    by a 58.8 kW (80 PS) Oberursel U.0 seven cylinder rotary engine, or umlaufmotor, a near-clone of the Gnome Lambda rotary engine of the same power output...
    5 KB (500 words) - 19:33, 2 October 2024
  • Thumbnail for Sands Fokker Dr.1 Triplane
    Rhône 9J was the direct basis for the Oberursel Ur.II 110 PS German umlaufmotor rotary that powered production Dr.Is in 1917–18. The aircraft has a typical...
    6 KB (480 words) - 19:16, 24 December 2023