The Hansa Brandenburg D-I was a German single seat, single engined biplane fighter aircraft built for Austria-Hungary.
The Austro-Hungarian version of the Albatros D-III produced by the firm Oeffag had several minor external differences identifying it from the German made fighters.
The Aviatik D.I, was the first wholly Austro-Hungarian designed fighter in the Austro-Hungarian Air Service.
The Phönix C.I was the first original design developed by the Phönix Flugzeug-Werke It was based on the Phönix built Hansa-Brandenburg C.II.
The Phönix D.I was an improvement of Hansa-Brandenburg designs with more efficient wings, powerful engine .
HIstory of the K.u.K. Luftfahrtruppen
The Imperial and Royal Aviation Troops (Kaiserliche und Königliche Luftfahrtruppen or K.u.K. Luftfahrtruppen) was the air force of the Austro-Hungarian Empire until the empire's demise in 1918. It saw combat on both the Eastern Front and Italian Front during World War I. Despite being much smaller and usually less technologically advanced than the German or British air forces, it performed with tenacity and bravery during the war.
The Air Service began in 1893 as a balloon corps (Militär-Aeronautische Anstalt) and would later be re-organized in 1912 under the command of Major Emil Uzelac, an army engineering officer. The Air Service would remain under his command until the end of the war in 1918. The first officers of the air force were private pilots with no prior military aviation training.
World War One
At the outbreak of the war the Austrian Air Service was composed of a mere 10 observation balloons, 85 pilots, and around 35 to 40 aircraft. Although all of the European powers were quite unprepared for modern air warfare in the beginning of the conflict, Austria-Hungary was one of the most seriously disadvantaged. This was due to the empire's mostly traditionalist military and civilian leadership combined with a relatively low degree of industrialisation.
Early attempts at aircraft designs yielded some very strange prototypes. Many of the earlier designs could not take off and were merely wasted material, time and money. In later years Austrian designers did create some outstanding aircraft, but the road to success was long and difficult.
Austro-Hungarian pilots faced off against the air forces of Romania, Russia and Italy, their only proximate opponents that fielded aircraft during the war. They also fought British squadrons that served on the Italian Front.
The aircraft employed by the Air Service were a combination of Austro-Hungarian designs built within the empire, German models that were domestically manufactured by Austrian firms (often with modifications and improvements), and planes that were imported from Germany.