Aviatik D.I / D.II / D.III / Dr.I / Berg Scout / Type 30.24
Lohner Serie 115
The D.I was designed to replace the Hansa-Brandenburg D.I series. The Aviatik D.I holds the distinction of becoming the first indigenously-designed fighter to be build in whole in Austria.
Often called the Berg Scout, in honour of the chief designer of Austro-Hungarian Aviatik, Julius von Berg, this basic single-seat scout design was originally designated Serie 30.14. Though primary manufacture of the Aviatik D.I was handled by Austrian Aviatik, license-production was also undertaken at multiple facilities. These included Lohner, Lloyd, MAG, Thone und Fiala and WKF under various batch series designations and differed mainly in horsepower output of their selected Austro-Daimler engines. In all, roughly 700 of all types were produced from 1917 into 1918. Deliveries began in the Fall of 1917 and continued on into October of 1918.
Built by the Austrian-Hungarian Aeroplane Works in Vienna-Stadlau, this type was used for recce duties by the Austrian Air Force during the Great War.
batch No37 Aviatik-Berg, Uherske Hradiště-Maratice 1919
When in action, early-form D.Is exhibited engine overheating issues and structural weaknesses (namely the fabric tearing away from the understructure or loss of parts and wings while at high speeds). The guns on the original production models were also situated well out of reach of the pilot meaning that a jammed gun stayed jammed until the pilot landed his mount for repairs. As production continued, the structure received attention in areas and was reinforced based on pilot feedback. Likewise, the guns were now moved within reach of the pilot. Engine overheating was solved in-the-field by simply flying without the engine covers on.
The engine made the D.I unpopular because it tended to overheat badly; most photographs show the top cowling panels, and
sometimes the side panels, removed to assist cooling. Initial armament was a single 8-mm Schwarzlose machine-gun mounted above the upper wing to fire over the propel-ler, but two of these guns, with synchronizing gear, in the top decking flanking the cylinders became standard armament. In almost every case the guns were so far forward that the pilot could not reach them to clear a stop-page, though many pilots fitted string to the cocking handles.
The D.1 was replaced progressively from the Balkan and Italian fronts during 1918 by the preferred Albatros scouts.
The D.I appeared in a revised form as the D.II with a cantilever low wing assembly. The D.II was produced in limited quantities in two batches beginning in 1918 but arrived too late to see useful delivery to combat units. The D.I was also considered in a few other notable "one-off" prototype forms - mainly the D.III, a high-altitude variant fitting a Hiero engine of 230 horsepower and the Dr.I (Type 30.24), a triplane design based on the D.I biplane.
Engine: 185 hp Daimler
Wingspan: 8.4 m
Length: 7.6 m
Loaded weight: 865 kg
Maximum speed: 186 kph
Service ceiling: 6400 m
Endurance: 3 hr 30 min
Armament: one synchronized machine gun incl. one flanking the cockpit
Aviatek Berg D.1