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Naglo D.II

Страна: Германия

Год: 1918

Fighter

Mrozinski - monoplane - 1912 - Германия<– –>Neuber - R-plane - 1917 - Германия


O.Thetford, P.Gray German Aircraft of the First World War (Putnam)


Naglo Quadruplane
  Built by Naglo Bootswerft of Spandau, Berlin, in 1918, this experimental single-seater was based on an Albatros D V type fuselage. The manner in which the bottom wing was attached to an extruded keel and braced with splayed struts, completely independent of the three main lifting surfaces, conveys the impression it was added as an afterthought. The machine was listed under serial D 1161/18 as Naglo D II for the second D types Competition at Adlershof in the summer of 1918, but no record of performance figures is available. Design was by Ing. Gradig, who was still with Albatros and, as a result, he was dismissed by that firm. The official type test was undertaken on 24th May 1918, but the machine was rejected at the request of Schubert of Albatros. Engine, 160 h.p. Mercedes D III. Span, 9.0 m. (29 ft. 6 3/8 in.). Area, 22.4 sq.m. (242 sq.ft.). Weights: Empty, 724 kg. (1,593 lb.). Loaded, 914 kg. (2,011 lb.).


W.Green, G.Swanborough The Complete Book of Fighters


NAGLO D II

  The D II quadruplane built by the Naglo Werft of Pichelsdorf, near Berlin, was designed by Ing Gnadig, who was, at the time, still in the employ of the Albatros Werke. It participated in the second D-type contest at Adlershof in the summer of 1918, the debriefing minutes of which indicated that it was to appear for further testing after modification. Powered by a 160 hp Mercedes six-cylinder water-cooled engine and intended to carry an armament of two LMG 08/15 machine guns, the Naglo D II appears to have been based on an Albatros D V-type fuselage. The bottom wing, completely independent of the three main lifting surfaces, was attached to an extruded keel and braced with splayed struts. Official type testing was undertaken on 24 May 1918, and during the D-type contest evaluation pilots praised the excellence of the construction and workmanship of the D II while calling for an improvement in the flight characteristics. No details of the performance of this quadruplane fighter have survived.

Empty weight, 1,596 lb (724 kg).
Loaded weight, 2,015 lb (914 kg).
Span, 29 ft 6 1/3 in (9,00 m).
Wing area, 241.12 sq ft (22,40 m2).


J.Herris German Aircraft of Minor Manufacturers in WW1. Vol II (A Centennial Perspective on Great War Airplanes 50)


Naglo

  Built by the Naglo Werft of Pichelsdorf near Berlin, apparently the Naglo D.I quadraplane was designed on the basis of 'more is better'. The retrogressive quadraplane wing cellule was added to a fuselage derived from the Albatros D.V.
  The Naglo D.II biplane was developed from the D.I and may have used the same fuselage. The D.II was evaluated in conjunction with the Second Fighter Competition and debriefing notes indicate it was to be modified and re-evaluated. Powered by a Mercedes D.III engine, it was intended to carry the standard German fighter armament of two machine guns. Official type testing was done 24 May 1918, and evaluation pilots praised the construction and workmanship but wanted improved flying qualities. Designed by Ing. Gnadig, who was employed by Albatros at the time, its appearance resulted in his termination for conflict of interest and the prototype was rejected at the request of Albatros. The pylon for attaching the lowest wing was built into the fuselage. No performance data has survived.

Naglo D.I Quadraplane Specifications
Engine: 160 hp Mercedes D.III
Wing: Span 9.00 m
Area 22.40 m2
General: Empty Weight 724 kg
Flying Weight 914 kg

J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
Naglo D.I Prototype
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
The Naglo D.I quadraplane fighter prototype. More wings increased both lift and drag, and fighters needed to be fast as well as maneuverable. Generally, multi-planes were slow.
The only Naglo fighter to be flown, the D II appears to have had an Albatros D V-type fuselage.
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
The Naglo D.I quadraplane fighter prototype. Span was 9 meters and it was powered by a 160 hp Mercedes D.III. Its biplane development the D.II, serial 1161/18, was evaluated in conjunction with the Second Fighter Competition. These photos are incorrectly marked 'D.II'. (Peter M. Grosz collection, STDB)
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
Closeup of the Naglo D.I fighter prototype. The radiators were airfoil type inset into the middle wing. (Peter M. Grosz collection, STDB)
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
The Naglo D.II fighter was a biplane development of the D.I quadraplane and competed at the Second Fighter Competition. This accurate Idflieg drawing shows it but no photos have survived. It may have used the fuselage of the D.I fitted with biplane wings as it retains the wing-mounting pylon under the fuselage. (Peter M. Grosz collection, STDB)
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
Naglo D.I
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
Naglo D.I
J.Herris - German Aircraft of Minor Manufacturers in WW1. Volume II /Centennial Perspective/
Naglo D.I