Naglo D.II

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The Naglo D.II was a German single seat quadruplane fighter, flown late in World War I. It took part in one of the fighter competitions but did not reach production.

Design and development

The D.II was the only fighter built by Naglo but it was designed by Ing. Gnädig, who at the time was an employee of Albatros Flugzeugwerke and it partly reflected their practice. It was, though, one of the few quadruplanes of World War I. The three upper wings were all similar, having constant chord, squared tips, no sweep and the same span. The lowest of these was attached to the lower fuselage, the middle one to the upper fuselage with a cut out for downward vision. Inboard N-form interplane struts held the upper plane high over the fuselage in place of a cabane. Outboard there was one more N-interplane strut between each wing, four in all. Ailerons were fitted on all three upper wings. The fourth wing, lowest of all, was quite different, much shorter in span. It was mounted independently of the other three, fixed to a dorsal keel extension and braced on each side with a V-strut from about mid-span to the root of the wing above. When the aircraft was parked, the wing was close to the ground and not far behind the undercarriage wheels.^[1]

The D.II was powered by a 160 hp (120 kW) Mercedes 6-cylinder water-cooled engine, driving a two blade propeller with a large, domed spinner with was blended into the round, converging contours of the fuselage. The engine's cylinder heads and exhausts were exposed above the fuselage, which overall appears similar to that of the Albatros D.V and may have been based upon it. THe D.II had a fixed, single axle conventional undercarriage, the axle fixed to the lower fuselage with a pair of V-struts, and with a tailskid at the rear.^[1]

The first flight occurred before 24 May 1918 when the D.II was type tested.^[1] It took part in the second D-type contest at Adlershof in mid-1918 and received complimentary comments on its build quality. A need to improve flight characteristics was noted; Naglo was therefore asked to to present the D.II for further tests after making modifications.^[1]

Specifications

Data from Green and Swanborough^[1]

General characteristics

Crew: One
Wingspan: 9.00 m (29 ft 6 in)
Wing area: 22.40 m² (241.1 sq ft)
Empty weight: 724 kg (1,596 lb)
Gross weight: 914 kg (2,015 lb)
Powerplant: 1 × Mercedes D.III 6-cylinder in-line water-cooled piston engine, 120 kW (160 hp)
Propellers: 2-bladed wooden propeller

Armament

2×LMG 08/15 fixed machine guns

References

↑ 1.0 1.1 1.2 1.3 1.4 Green, William; Swanborough, Gordon (1994). The Complete Book of Fighters. Godalming, UK: Salamander Books. p. 421. ISBN 1-85833-777-1.

External links

Photo of the NAGLO D.II

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 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 (Dornier) Rs.II Zeppelin-Lindau (Dornier) Rs.III Zeppelin-Lindau (Dornier) 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 (Dornier) Rs.I

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