DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY
German rocket car. Opel RAK 2 rocket car in 1928. Fritz von Opel's first rocket car was the RAK 1, tested on 15 March 1928, reaching a top speed of 75 kilometres per hour. Less than 2 months later, the RAK 2 was reaching speeds of 230 kilometres per hour using 24 solid fuel rockets. Later work involved liquid-fuelled rockets. This early work on rocket cars and aircraft led the development of rockets as weapons in World War II, and then to the rocket-based spaceflight programmes in the USA and USSR.
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