Junkers K 47 aircraft, naming the type the "Tien Chu". Demonstrations were also carried out in Romania, Portugal, and Latvia without any resulting orders, although one aircraft may have been purchased by Japan. Three aircraft were used by the "Reichswehr" clandestine training facility at Lipetsk and a small number of the unarmed civil version were purchased by the DVS. K 47s were also used in trials to investigate dive bombing, experiments that would be formative of Pohlmann's thinking in designing the Ju 87. Indeed, the second Ju 87 prototype was fitted with a K 47 tail. Junkers K 47 The Junkers K 47
Junkers J 1 flown the "Flyer I" biplane in December 1903. On 12 December 1915, the aircraft made its brief maiden flight, flown by "Leutnant" Theodor Mallinckrodt of FEA 1, during which an altitude of almost was reached. Greater altitudes and performance was achieved during subsequent flights. By the end of January 1916, Junkers had been given a contract to further develop his all-metal concept, and the later Junkers J 2 single-seat fighter, which would never see frontline service, was the follow-on to the J 1. It is believed that the Junkers J 1 was not flown again after January 1916. In 1926