Albatros D.I

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Albatros D.I 
The Albatros D.i (internal designation L15) was a German fighter of the First World War and the first operational combat single with a double-MG.

In the spring of 1916 conquered new fighter aircraft of the Allies, especially the French Nieuport 11 and the British Airco Dh.2, the air over the Western Front against the outdated Fokker monoplane back. Given the critical layers at Verdun and later at the Somme the mounting losses of own aircraft and crews valuable weighed particularly heavy, thus accompanied the growing threat of the soldiers in the trenches by enemy air raids and artillery observation. Urgent new fighter was sought in order to stabilize the situation.

For the first time put the company Albatros deals with the development of a fighter plane. In April 1916, the Technical Director of Albatros aircraft plants Dipl.-Ing designed. Robert Thelen and his assistants Schubert and gracious from the two-seater Albatros C-examination the Jagdeinsitzer DI (Designation D was the default name for a single-seat, armed biplane fighter, albatross gave the aircraft later the internal working name L15), of a powerful engine with should combine a strong armament. His design was characterized by a hull made of wood in a novel semi-monocoque construction of which was aerodynamically very stable and with its sleek teardrop shape and almost completely in the fuselage faired engine block also - however, affected by the mounted on the hull sides Windhoff cooler operating at a Results had to lead to engine failure and were banned on November 10, 1916 for use. The wings were covered in conventional design with linen. As the water-cooled engines 150 hp Benz Bz.III or the 160 hp Mercedes D.III six-cylinder engine were available; the choice fell on the Mercedes D.III of not only much stronger than the rotary engines of Nieuport (80 hp) and the DH2 (100 hp) was, but the Albatros DI with its takeoff weight of nearly 900 kilograms in relation to Nieuport (480 kg) and DH2 (654 kg) also made particularly difficult. However, this brought the key in a dogfight advantage of a huge diving speed.

The two synchronized machine guns doubled the firepower of the recent struggle seater. The aircraft could be handled superbly thanks to the powerful engine and the balanced elevator despite its weight. It was much faster than the comparison sample of the Entente and had an excellent climbing ability, but was not as agile as the Fokker monoplane used previously or at the same time developed Halberstadt Jagdeinsitzer. Another drawback was that caused by the upper wing limited visibility up front. These disadvantages, however, were more than offset by the higher gradeability, speed and firepower.

General characteristics : 

Wingspan: 8.50 m
Length: 7.33 m
Height: 2.95 m
Wing area: 22,90 m²
Empty weight: 674 kg
Loading capacity: 224 kg
Max. Start Weight: 898 kg
Engine: Water-cooled 6-cylinder engine (Mercedes D III with 160 hp or 150 hp Benz with Bz.III)
Armament: 2 synchronized 7.92 mm LMG 08/15
Max speed: 175 km / h on NN
Service ceiling: 6000 m
Climb performance: 3.3 m / s
Rise time at 1,000 m: 4 min
Rise time at 3,000m: 15 min
Rise time on 5000m: 40 min
Flight duration: 1: 50h
Max. Range: 230 km
Crew: 1 man
Quantity: 50

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