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

Lohner 10.23

  The last landplane designed by chief engineer Bauer was the Lohner 10.23 (Type AC) powered by a 360 hp Daimler six-cylinder engine. Built to similar specifications as the Oeffag 50.13, Brandenburg L 15, and Lohner 10.21, the 10.23 was a long-range reconnaissance machine with a duration of four hours. Facts are sparse, but it is known that the 10.23 was reported at Aspern on 19 June 1918 awaiting camera installation. According to Cavigioli, a not-always reliable source, the prototype was approved by the Flars purchasing commission on 10 July 1918, but the August 1918 delivery calendar does not reflect this assertion. After the war the 10.23 prototype was returned to the Lohner factory where it was reported under modification for civilian use on 4 June 1919. Named Express I and placed in service as a courier machine, it made its first courier flight from Aspern to Kamenez-Podolskij in the Ukraine on 7 July 1919 and returned on 17 July. According to Swiss sources, Express I was confiscated by the Inter-Allied Control Commission and purchased by Aero Gesellschaft Comte, Mittelholzer St Co. In 1920, it was given the Swiss civil registry number CH-30.

Lohner 10.23 Specifications
Engine: 360 hp Daimler
Wing: Span Upper 11.20 m (36.74 ft)
Span Lower 11.00 m (36.09 ft)
Chord Upper 1.90 m (6.23 ft)
Chord Lower 1.90m (6.23 ft)
Total Wing Area 40.0 sq m (430 sq ft)
General: Length 7.60 m (24.93 ft)
Height 3.20 m (10.50 ft)
Empty Weight 920 kg (2029 lb)
Loaded Weight 1615 kg (3561 lb)
Maximum Speed: 197 km/hr (122 mph)
Climb: 1000m (3,281 ft) in 3 min 30 sec

E.Hauke, W.Schroeder, B.Totschinger Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

10. Flugzeuge der Fabrik Jacob Löhner & Co. Wien, Floridsdorf
10.23 Löhner DD Type AC Dm 360
10.24 Löhner DD Type AC Dm 360