J.Herris DFW Aircraft of WWI (A Centennial Perspective on Great War Airplanes 29)

DFW Pfeil Doppeldecker
  
   The DFW Pfeil Doppeldecker (Arrow Biplane) followed the earlier DFW Mars biplanes with banana-shaped wing planform. The aircraft was smaller, lighter, and more streamlined than the Mars biplane for improved performance and agility.
   Its compact design included a single bay of struts, greatly reducing drag compared to the three-and-a-half-bay Mars biplane. The engine was a 100 hp Daimler. The distinctive wing planform was not continued in future designs.

P.Grosz, G.Haddow, P.Shiemer Austro-Hungarian Army Aircraft of World War One

Lloyd 40.01

  On its first public appearance at the Third International Flugmeeting at Aspern, director Bier brilliantly piloted the Lloyd LS 1 biplane (competition number 20) to four world altitude records. On 27 June 1914, Bier reached an altitude of 6170 meters (20,244 ft) with one passenger and on 28 June, 5440 meters (17,849 ft) with two passengers. Bier's flying skills earned him third prize overall behind Edmund Sparmann flying for Lohner and Roland Garros for Nieuport. The record-breaking Lloyd LS 1 biplane was powered by a 145 hp Hiero engine. Praised as the best in-line engine at the Flugmeeting, it was designed by Otto Hieronimus who soon became famous for his wartime engines.
  Although identified as a Lloyd product, sufficient evidence exists to demonstrate that the LS 1 was built by DFW in Leipzig. In light of the fact that Lloyd took seven months to deliver the first production aircraft, it is unlikely that the fledgling company was capable of building and fine-tuning a record-breaking competition aircraft between the opening of the factory (8 May 1914) and the first day of the Flugmeeting (21 June 1914). The LS 1 biplane (Lloyd Stahlrumpf - steel fuselage) had the characteristic DFW welded steel-tube fuselage, whereas every Lloyd fuselage was built of wood. A similar biplane photographed at the DFW factory further supports the contention that the LS 1 was built in Leipzig.
  The Lloyd LS 1 (less engine) was purchased by the LA in September 1914. A new 145 hp Hiero engine was installed and the ventral radiator replaced by one mounted above the engine. From January to August 1915, the LS 1 was flown by Flik 6 at Igalo on the Montenegro Front. In military records the LS 1 was designated Lloyd 20M (M for meeting) before receiving the prototype designation 40.01 in February 1915. In late 1915, the LS 1 was purchased as surplus by Lloyd for display at the Budapest Military Aircraft Exhibition in 1917. Miraculously, the LS 1 survived the Great War, the post-war strife, and the battle for Budapest in 1944. Restored, it can now be seen at the Transportation Museum in Budapest.

Lloyd 40.01 Specifications
Engine: 145 hp Hiero
Wing: Span Upper 14.00 m (45.93 ft)
Sweepback Upper 8 deg
Sweepback Lower 8 deg
Stagger 0.60 m (1.97 ft)
Total Wing Area 44 sq m (474 sq ft)
General: Length 9.00 m (29.53 ft)
Height 3.00 m (9.84 ft)
Empty Weight 700 kg (1544 lb)
Loaded Weight 1100 kg (2426 lb)
Maximum Speed: 130 km/hr (81 mph)