Another entry into the “Who the heck” series…
In 1961 in Sibiu, Romania a manuscript by an Austian military engineer by the name of Conrad Haas was found. In the manuscript Conrad Haas puts into writing some amazing concepts about rocketry at a time when these concepts did not exist. He lived between 1509 and 1576. He is the first person known to put into writing the concept of multi-staging that was later incorporated by Johann Schmidlap. He also writes about spacecraft, delta fins, bell nozzles and even liquid fuel.