Junkers D.I

J 7 and J 9 (D.I)
	300px
	Junkers J 9 modern reproduction,; in Luftwaffenmuseum Berlin Gatow.
Role	Fighter
National origin	Germany
Manufacturer	Junkers
First flight	17 September 1917
Primary user	Imperial German Navy
Number built	41

The Junkers D.I (factory designation J 9) was a fighter aircraft produced in Germany late in World War I, significant for becoming the first all-metal fighter to enter service. The prototype, a private venture by Junkers designated the J 7, first flew on 17 September 1917,^[1] going through nearly a half-dozen detail changes in its design during its tests. Demonstrated to the Idflieg early the following year, it proved impressive enough to result in an order for three additional aircraft for trials. However, the changes made by Junkers were significant enough for the firm to redesignate the next example the J 9, which was supplied to the Idflieg instead of the three J 7s ordered.

File:Junkers D.I German First World War all-metal fighter.jpg

Lengthened-fuselage and extended wingspan Junkers D.I (J.9/II) undergoing evaluation

During tests, the J 9 was felt to lack the maneuverability necessary for a front-line fighter, but was judged fit for a naval fighter, and a batch of 12 was ordered. These were to have been supplied to a naval unit by September 1918, but instead equipped the same unit redeployed to the Eastern Front after the Armistice. One survives in the Musée de l'Air et de l'Espace, outside Paris, France.

Specifications

Data from Holmes, 2005. p 32

General characteristics

Crew: One pilot
Length: 7.25 m (23 ft 9.4 in)
Wingspan: 9.00 m (29 ft 6.3 in)
Height: 2.60 m (8 ft 6 in)
Empty weight: 654 kg (1,438 lb)
Gross weight: 834 kg (1,834 lb)
Powerplant: 1 × BMW IIIa water-cooled 6-cylinder inline, 138 kW (185 hp)

Performance

Maximum speed: 225^[2] km/h (140 mph)
Endurance: 1.5^[2] hours
Service ceiling: 6,000 m (19,700 ft)
Rate of climb: 3.5^[2] m/s (683 ft/min)

Armament

2 × fixed, forward-firing Spandau machine guns

References

↑ Grosz and Terry 1984, p.67.
↑ ^2.0 ^2.1 ^2.2 Kay, Anthony L. Junkers Aircraft and engines 1913-1945 p. 28 (2004). London: Putnam Aeronautical Books ISBN 0-85177-985-9

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External links

[Grosz_metal_p67-1] Grosz and Terry 1984, p.67.

[Kay-2] 2.0 ^2.1 ^2.2 Kay, Anthony L. Junkers Aircraft and engines 1913-1945 p. 28 (2004). London: Putnam Aeronautical Books ISBN 0-85177-985-9

[1]

[2]

v t e World War I aircraft of the Central Powers
Fighters	AEG D.I AEG Dr.I Albatros D.I Albatros D.II Albatros D.III Albatros D.V Aviatik D.I Aviatik C.VI Daimler L.6 Euler D.I Euler D.II Fokker D.I Fokker D.II Fokker D.III Fokker D.IV Fokker D.V Fokker D.VI Fokker D.VII Fokker D.VIII Fokker Dr.I Fokker E.I Fokker E.II Fokker E.III Fokker E.IV Fokker E.V Halberstadt D.II Hannover CL.II Hannover CL.III Hannover CL.IV Hannover CL.V Hansa-Brandenburg W.12 Hansa-Brandenburg W.29 Junkers D.I Kondor D.6 Kondor E.III Naglo D.II Pfalz D.III Pfalz D.XII Pfalz Dr.I Pfalz E.I Pfalz E.II Phönix D.I LFG Roland D.II LFG Roland D.VI Siemens-Schuckert D.I Siemens-Schuckert D.II Siemens-Schuckert D.III Siemens-Schuckert D.IV Siemens-Schuckert L.I Zeppelin-Lindau D.I
Bombers and ground attack	AEG DJ.I AEG G.I AEG G.II AEG G.III AEG G.IV AEG G.V AEG J.I AEG J.II AEG R.I Friedrichshafen G.II Friedrichshafen G.III Gotha G.I Gotha G.II Gotha G.III Gotha G.IV Gotha G.V Gotha GL.VII Gotha G.IX Hannover CL.II Junkers CL.I Junkers J.I Rumpler G.I Rumpler G.II Rumpler G.III Zeppelin-Lindau Rs.II Zeppelin-Lindau Rs.III Zeppelin-Lindau Rs.IV Zeppelin-Staaken R.VI
Reconnaissance	AEG B.I AEG B.II AEG B.III AEG C.I AEG C.II AEG C.III AEG C.IV AEG C.V AEG C.VI AEG C.VII AEG C.VIII AGO C.I AGO C.II AGO C.III AGO C.IV AGO C.VII AGO C.VIII Albatros B.I Albatros B.II Albatros C.I Albatros C.III Albatros C.V Albatros C.VII Albatros C.IX Albatros C.X Albatros C.XII Aviatik B.I Aviatik B.II Aviatik C.I Aviatik C.VI DFW C.V LFG Roland C.II LVG B.I LVG C.II Rumpler C.I Rumpler C.IV Rumpler Taube
Trainers	Euler D.I
Prototypes	Albatros C.II Fokker V.1 Fokker V.2 Junkers J 1 Junkers J 2 Zeppelin-Lindau Rs.I

v t e Junkers aircraft designations by designating body
Company	J 1 J 2 J 3 J 4 J 5 J 6 J 7 J 8 J 9 J 10 J 11 J 12 F 13 J 15 K 16 K 17 J 18 T 19 A 20 H 21 / J 21 / T 21 J 22 T 23 G 23 F 24 / G 24 A 25 T 26 T 27 J 28 T 29 K 30 G 31 A 32 W 33 W 34 A 35 S 36 K 37 G 38 K 39 K 47 A 48 A 50 K 51 K 53
Idflieg	CL.I D.I E.I J.I
RLM	Ju 46 Ju 49 Ju 52 Ju 60 Ju 85 Ju 86 Ju 87 Ju 88 Ju 89 Ju 90 Ju 160 Ju 187 Ju 188 Ju 248 Ju 252 Ju 268 Ju 287 Ju 288 Ju 290 Ju 322 Ju 352 Ju 388 Ju 390 Ju 488 Ju 635
"EF" (experimental)	EF 61 EF 126 EF 127 EF 128 EF 131 EF 132 EF 140 EF 150

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J 7 and J 9 (D.I)
300px
Junkers J 9 modern reproduction, in Luftwaffenmuseum Berlin Gatow.
Role	Fighter
National origin	Germany
Manufacturer	Junkers
First flight	17 September 1917
Primary user	Imperial German Navy
Number built	41