The Rumpler C.VI was a high-altitude reconnaissance aircraft used by the Germans during the First World War.
The aircraft was designed, along with the C.VII, based on the previous success of high-altitude Zeppelins, from which the engine was also taken: the Maybach Mb.IVa high-altitude high-compression engine.
To operate in thinner atmosphere, the aircraft also had a special carburetor and radiator.
The radiator was half-sized to reduce weight.
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