Imperial Germany (1914)
At least 224 Rumpler B.I reconnaissance aircraft were produced during World War 1 including some 26 floatplane types for the German Navy.
Detailing the development and operational history of the Rumpler B.I Reconnaissance Biplane. Entry last updated on 4/15/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com
The Rumpler B.I recorded its first flight in 1914 and was then adopted by the Imperial German Air Service (the Luftstreitkrafte) and German Navy (in floatplane form). Approximately 224-225 of the type would be produced in all - 198 for the German Air Service and 26 for the Navy. Some examples were shipped to stock the allied Ottoman Air Force attempting to control its holdings in the Middle East.
The B.I line existed in two major variants - the land-based B.I "4A" and the B.I "4B" floatplane equipped with a pontoon undercarriage. The 4A was outfitted with a Mercedes D.I series inline liquid-cooled piston engine outputting at 100 horsepower. The 4A13 was a slightly modified design with a revised rudder tail fin. The 4A14 was another 4A production model though now fitted with a Benz Bz.III series 6-cylinder inline, water-cooled piston engine of 150 horsepower. The floatplane variant, the 4B, was also evolved along similar lines, primarily featuring different engine installations. This was headed by the 4B1 with its standard Mercedes D.I powerplant and led to the 4B2 with its Benz Bz.III series engine. The 4B11 was outfitted with the Benz Bz.I engine and the 4B12 followed with its Benz Bz.III engine.
In practice, the Rumpler B.I served in the unarmed reconnaissance role which provided observers with tremendous views of the countryside battlefields from a lofty perch. Such aircraft proved useful in marking enemy locations for upcoming offensives and artillery barrages or detailing enemy movements. As one of the earlier war-time aircraft designs, the B.I was not typically armed in flight. Its crew was made up of two - a pilot and his observer. Structurally, the aircraft exhibited a wingspan of 42 feet, 8 inches with a running length of 27 feet, 7 inches and, when at rest, reached a height of 10 feet. Performance specifications included a maximum speed of 90 miles per hour - on par with early-war offerings of similar scope and function. Externally, the aircraft was of a conventional biplane design with an upper and lower wing segment (of unequal span) joined by parallel struts and a network of cabling throughout. The struts also identified the wing's design as "twin-bay" for the two visible segments it created along the wingspan when views from the front or rear profiles. The undercarriage was wheeled and fixed to the fuselage underside by way of reinforced struts. The engine, partially exposed at the front of the fuselage, powered a two-bladed wooden propeller. The empennage exhibited "tear-drop" shaped tailplanes and simplistic tailskid (the latter for supporting the empennage when landing). The crew of two sat in tandem across two seperate open-air cockpits.
Denmark adopted some Rumpler B.Is in the post-war years though no other foreign operator took on the aircraft from there. Like the famous Sopwith concern of England, Rumpler attempted to survive in the post-war world (where military contracts proved harder to come by) and tried a stint in the civilian market, developing the Rumpler "Tropfenwagen" automobile (Sopwith attempted civilian aircraft and then motorcycles). As history shows, both companies failed in their endeavors and fell to history by way of liquidation.
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Relative Maximum Speed Rating
This entry's maximum listed speed (90mph).
Graph average of 75 miles-per-hour.