Based on a prototype with the factory designation4A15, the G.I and its successors were built to a conventional bomber design for their time, two-baybiplanes with unstaggered wings of unequal span.[2] The pilot sat in an open cockpit just forward of the wings, and open positions were provided in the nose and amidships for a gunner and observer. The engines were mounted pusher-fashion in nacelles atop the lower wings and enclosed in streamlined cowlings.[2] Fixedtricycle undercarriage was fitted, with dual wheels on each unit.[2]
TheG.II version was almost identical, but featured more powerful engines and carried a second 7.92 mm (.312 in)machine gun and increased bombload.[2] TheG.III was again similar, but had engine nacelles that were now mounted on short struts clear of the lower wing.[2]
Gray, Peter; Owen Thetford (1962).German Aircraft of the First World War. London: Putnam.
Herris, Jack (2014).Rumpler Aircraft of WWI: A Centennial Perspective on Great War Airplanes. Great War Aviation Centennial Series. Vol. 11. n.p.: Aeronaut Books.ISBN978-1-935881-21-6.
The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing.
Kroschel, Günter; Helmut Stützer (1994).Die Deutschen Militärflugzeuge 1910–1918. Herford: Verlag E.S. Mittler & Sohn.