Rocket
Johann Schmidlap, a German fireworks maker, while trying to reach higher altitudes for his fireworks displays was the first person known to use staging in rocketry. In 1591 he attached smaller rockets on the tops of bigger rockets. After the larger rockets exhausted their fuel the remaining smaller rockets were fired. Schmidlap called his discovery “step rockets”. Today we call it multi-staging. Thanks to Schmidlap’s step rockets a process for reaching the moon and the planets was invented. I wonder if he ever tried CHAD staging?

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