C.Owers Hansa-Brandenburg Aircraft of WWI Vol.1: Landplanes (A Centennial Perspective on Great War Airplanes 17)

Type ZM and Austro-Hungarian Type GF

   The battleplane concept of the early war days evolved into the weight lifter and then the bomber as we now accept the designation. The ZM was a twin-engined battleplane originally built for the German Navy, and was the first twin-engined aircraft built by Brandenburg. The ailerons were mounted on the outer interplane struts of the three bay wings. The Austro-Hungarian Army ordered a prototype as the Type GF that was delivered as serial 05.05. Whether this was the same machine as that ordered by the German Navy is unknown, nor is any data available for its use, if any, by that service.
   Equipped with crude bomb racks, 05.05 was pressed into service and was lost in a landing accident returning from a raid on Chiopris on 6 April 1916. According to Heinkel data it could carry 50 x 5-kg bombs, and it is assumed, an equivalent of larger bombs if suitable carriers were available. It was equipped with two machine guns. The type never overcame the problem of not being able to fly on one engine and was reported as unsuitable for front-line service.

Brandenburg Type ZM Specifications
Source Typenschau Brandenburg 3-View
Span, m 17.50/26.73 27.500
Length, m 15.70 15.700
Wing Area, m2 144 144
Motor 160-hp Maybach 160-hp Maybach

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

01. — 010. Flugzeuge ausländischer Produktion (Самолеты иностранного производства)
05.05 Brandenburg Type ZM 2 x Merc 160