The Phönix D.I

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The Phönix D.I was basically a development of the Hansa-Brandenburg D.I equipped with a more powerful engine. Various experimental machines were presented to the half of 1917, but none brought a significant improvement over the original hunter, though ultimately the 20.16 model with an Austro-Daimler engine of 200 HP became in its final form, an effective prototype single-seat fighter biplane Phönix DI  

In autumn 1917, three orders of fifty D.I, series 128, 228 and 328, were passed at Phönix, the manufacturing company later forty biplanes Series 128 on behalf of the Austro-Hungarian navy. military biplanes were placed on active service in February / March 1918, initially for escort and reconnaissance missions. But before commissioning in Jagdkompagnien in May, it was necessary to strengthen the wings of D.I, they are prone to weakness when they were under stress. Machinery for the Navy were put into operational service in June, and these hunters remained a serious threat, until the end of the First World War, for the Italian aircraft in the Adriatic.

Although less maneuvering with respect to Allied fighters, the Phönix was a fast machine with good climbing ability. A serious drawback was the inability of the driver to access two machine guns synchronized Schwarzlose caliber 8 mm fitted to that. These weapons were completely covered by the engine cover panel and pulled through openings in the front, a large aerodynamic finesse, but machine guns impossible to achieve in the case of jamming, which happened quite often. This defect persisted on versions D.II and D.IIa.

The D.II was equipped with the same propellant as the previous model, but its wings were of increased scale and minor changes had been made. Three batches, series 122, 222 and 322, were ordered, and a group of D.IIa (422 series) equipped with Hiero engines (Hieronymus) of 230 hp and equipped with ailerons on both wings. Only a little over half of D.II / D.IIa ordered were eventually built, their commissioning is carried out from May 1918. Before the end of the war, was put into production the Phönix D.III, D.IIa an improved model, with wings mounted without dihedral, full flaps and machine guns in the end, positioned further back to be accessible by the driver.

In 1919, after evaluation of the prototype D.III (J41), the Royal Swedish aircraft bought about twenty D.III at Phönix. These biplane were known in Sweden as Phönix 122, suggesting that these machines were rather D.II finally constructed as D.III. Subsequently, a lot of about ten of the same type biplane was built in the workshops of the Swedish army in Malmö in 1924, these aircraft receiving an engine B.M.W. IIIa 185 hp, the Austrian engines were no longer available. These Swedish hunters could be provided with replacement skis landing gear wheels in winter. With the formation of the Svenska Flygvapnet in July 1926, about ten Phönix 122 (now designated JI) were in service in the Wing F 3. They were also in the newest Wing F 5, until 1930, in order to accomplish communication and training missions, and one copy remained in service until the end of 1936, to conduct weather reconnaissance missions. While serving in the Swedish forces, some D.III were endowed with greater drift and equipped with a large fuel tank section and mounted in the center, on top of the upper plane

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