Junkers T 29 description as the T 29, suggesting a training role and a hope of sales, they seem to have been built primarily to flight test the double wing which was successfully used on later Junkers aircraft such as the G 28, the Ju 52/3m and the Ju 87. Junkers T 29 The Junkers J 29 was a two-seat, single-engined experimental training monoplane, built in Germany in 1925. Its significance is that it was the first aircraft to fly and test the Junkers Doppelflügel (double wing) control surfaces used very successfully on the later Junkers Ju 52. The Junkers J 29 was
Junkers J 2 spin on 23 September 1916 in one of the J 2s, and this event, combined with the substandard climbing performance of the J 2 series of test aircraft, caused "IdFlieg" to withdraw any further governmental support (effectively ending the J 2's contract) for the Junkers firm's advanced monoplane designs until a lighter metal, such as duralumin, was selected for such designs. The first attempt to use duralumin for airframe construction by the Junkers firm was the never-completed J 3 mid-wing, rotary engine-powered, aluminum tubing fuselage single-seat monoplane design, of which only the corrugated sheet duralumin-covered wing structures and "bare" tubular