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Albatros D.IV

Страна: Германия

Год: 1917


Albatros - C.XIII - 1917 - Германия<– –>Albatros - D.V/D.Va - 1917 - Германия

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

Albatros D IV
  The Albatros D IV was something of a hybrid, having a partial D II wing cellule and a D Va fuselage. It was powered with an experimental, specially geared, version of the standard 160 h.p. Mercedes D III, which enabled the engine to be completely buried in the nose. No guns were fitted and as there was no significant increase in performance the D IV remained no more than a prototype mainly due to difficulties with the motor. Span, 9.05 m. (29 ft. 8 3/4 in.). Length, 7.33 m. (24 ft. 0 5/8 in.). Speed, 165 km.hr. (103.12 m.p.h.). Climb, 5,000 m. (16,400 ft.) in 32 min. Range, 350 km.

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


  The DIV was developed essentially to test the geared version of the 160 hp Mercedes engine (this having reduced the 1,400 rpm of the engine crankshaft to 900 rpm at the propeller). It was based on the D II cellule, but substantially enlarged, and three D IVs were ordered in November 1916. It is believed that only one of these was completed and flown. It was tested with two-, three- and four-bladed propellers until April 1918, but excessive vibration led to the discontinuation of the programme.

Max speed, 103 mph (165 km/h).
Endurance, 2.2 hrs.
Span, 29 ft 8 in (9,04 m).
Length, 24 ft 0 5/8 in (7,33 m).
Wing area, 220.66 sq ft (20,50 m2).

W.Green, G.Swanborough - The Complete Book of Fighters
Albatros D IV featured a close-cowled, geared engine.
H.Cowin - Aviation Pioneers /Osprey/
The story of the Albatros D IV is a tale of the one that got away. Following upon the operational success of their D II and D III fighters, Albatros came up with the extremely logical idea of using the robust wing of the D II, married to a new elliptical sectioned fuselage, later to be adopted for their D V. This hybrid machine was the Albatros D IV of which only one was built. Up to now, Albatros's thinking had been flawless, particularly as the reversion to the D II's wing promised to prevent the occasional catastrophic high speed wing shedding being experienced with their 'V' strutted D III sesquiplanes. Where Albatros's thinking went awry was in choosing to fit the prototype with an experimental geared variant of the 160hp Mercedes D III. This engine, which appears never to have worked satisfactorily, managed to delay D IV flight testing to the point where officialdom simply lost interest. With another engine, the D IV might have helped bridge the gap between the Albatros D III and the Fokker DVII, something the Albatros D V never quite did.