|Primary users||German Imperial Navy
Finnish Air Force
|Developed from||Rumpler C.I|
Design and development
Born out of a requirement of the Kaiserliche Marine (Imperial Navy) for a seaplane fighter, the Rumpler 6B was, like its contemporaries the Albatros W.4 and Hansa-Brandenburg W.9, an adaptation of an existing landplane design. In Rumpler's case the new floatplane fighter was based on the company's two-seat C.I reconnaissance aircraft. The modifications included adding a forward stagger to the wings, removal of the second (observer's) cockpit and fitting a larger rudder to offset the increased side area caused by the addition of floats. In the production aircraft, the area of the horizontal tail surfaces was also slightly reduced. The armament consisted of a fixed, forward-firing 7.92 mm (.312 in) LMG 08/15 "Spandau" machine gun mounted on port side of the engine block.
The initial version of the fighter was the 6B-1. A total of 39 of these were produced, with all but one of the number having been delivered by the end of May 1917. A new version of the basic design, the 6B-2, was introduced in October 1917. These aircraft retained the Mercedes D.III engine, but otherwise they were based on the C.IV, with larger dimensions and more rounded horizontal tail surfaces. In spite of the decrease in performance, 49 of this type were delivered between October 1917 and January 1918, during which time the remaining 6B-1 also left the factory.
Use in Bulgaria
The two 6B1 naval fighters stationed at the German Naval Air Station Peynerdjik near Varna on the Black Sea were transferred in June 1918 to the Bulgarian Navy. They were used after the war in minesweeping operations. In 1920, they were destroyed in accordance with the clauses of the Peace Treaty. 
Use in Finland
In February 1918, the Finnish White Army ordered one Rumpler and seven other aircraft from Germany. The aircraft was destroyed in an accident in 1918. Another Rumpler aircraft was bought from the Germans in Tallinn in 1918 and it was used for seven years.
Hallinportti Aviation Museum has one Rumpler in storage.
Data from Fighters, Attack and Training Aircraft, 1914 – 1919
- Crew: One, pilot
- Length: 9.40 m (30 ft 10 in)
- Wingspan: 12.05 m (39 ft 6 in)
- Height: 11ft (6in)
- Wing area: 36.00 m² (387.5 ft²)
- Max. takeoff weight: 1,140 kg (2,513 lb)
- Powerplant: 1 × Mercedes D.III 6-cylinder, liquid cooled inline engine, 120 kW (160 hp)
- Maximum speed: 153 km/h (83 kn, 95 mph)
- Range: 4 hours (of flying time)
- Service ceiling: 5,000 m (16,400 ft)
- 1 × fixed, forward-firing 7.92 mm (.312 in) LMG 08/15 with an interruptor gear
- Aircraft of comparable role, configuration and era
- Related lists
- List of fighter aircraft
- List of military aircraft of Germany
- List of aircraft of the Finnish Air Force
|Wikimedia Commons has media related to Rumpler aircraft.|
- Milanov, Y. The Aviation in Bulgaria in the Wars from 1912 to 1945, Vol. I(in Bulgarian). Sveti Gueorgui Pobedonosetz, Sofia, 1995.
- Angelucci 1983, p. 116.
- Angelucci, Enzo. The Rand McNally Encyclopedia of Military Aircraft, 1914–1980. San Diego, California: The Military Press, 1983. ISBN 0-517-41021-4.
- Keskinen, Kalevi, Kari Stenman and Klaus Niska. Suomen ilmavoimien lentokoneet 1918–1939 (in Finish). Tietoteos, 1976.
- Keskinen, Kalevi, Kyösti Partonen and Kari Stenman. Suomen Ilmavoimat I 1918–27 (in Finish). 2005. ISBN 952-99432-2-9.
- Munson, Kenneth. Fighters, Attack and Training Aircraft 1914–19 (The Pocket Encyclopedia of World Aircraft in Colour ). London: Bounty Books, 2004. ISBN 0-7537-0916-3.