Dickmanns was born in 1936. He studied aerospace and aeronautics at RWTH Aachen (1956–1961), and control engineering at Princeton University (1964/65); from 1961 to 1975 he was associated with the German Aero-Space Research Establishment (now DLR) Oberpfaffenhofen, working in the fields of flight dynamics and trajectory optimization.
Dickmanns's birth year was 1936. He pursued aerospace and aeronautics at RWTH Aachen from 1956 to 1961, followed by control engineering studies at Princeton University (1964/65). From 1961 to 1975, he worked for the German Aero-Space Research Establishment (now DLR) Oberpfaffenhofen, specializing in flight dynamics and trajectory optimization.