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
Grinnell Aeroplane Grinnell Aeroplane The Grinnell Aeroplane Company was an American aircraft manufacturer based in Grinnell, Iowa, that built aircraft prior to World War I. The company was formed to develop the "Scout" aircraft designed by Billy Robinson. Robinson trained at the Max Lille school in Cicero, Chicago as a mechanic, learning to fly Wright aircraft and Nieuports. He worked for a brief time as a partner in the National Aeroplane Company before leaving to Iowa in 1913. His custom built parasol was the first to fly airmail from Iowa, setting a non-stop distance record of 390 miles. In 1914, the Grinnell