Junkers Ju 87 late 1934. It was to have been completed in April 1935, but, due to the inadequate strength of the airframe, construction took until October 1935. The mostly complete Ju 87 V1 W.Nr. 4921 (less non-essential parts) took off for its maiden flight on 17 September 1935. The aircraft was later given the registration D-UBYR. The flight report, by "Hauptmann" Willy Neuenhofen, stated the only problem was with the small radiator, which caused the engine to overheat. The Ju 87 V1, powered by a Rolls-Royce Kestrel V12 cylinder liquid-cooled engine, and with a twin tail, crashed on 24 January 1936 at
Junkers EF 128 in World War II only models had been built. It had swept wings which included wood in their construction. There was a projected variant of a two-seater all-weather/night fighter with a lengthened fuselage. Junkers EF 128 The Junkers EF 128 was a high-altitude jet fighter designed by Junkers for the Emergency Fighter Program Luftwaffe design competition during the Second World War. This fighter would be powered by a Heinkel HeS 011 turbojet and armed with four MK 108 cannons, reaching a speed of 1000 km/h at an altitude of 7000 m. The production in series was projected to start around