Ronald F. Probstein

Ronald F. Probstein was a world-renowned expert in fluid mechanics and the Ford Professor of Engineering, Emeritus, at the Massachusetts Institute of Technology (MIT). He played a principal role in spacecraft and ballistic missile reentry physics, hypersonic flight theory, comet behavior, desalination, and synthetic fuels. Probstein died on September 19, 2021, at the age of 93.

Mar 11, 1928 Wikipedia