sentences:  The French relaunched their aeronautical research activity and were eager to hire German scientists, so in 1947 Flügge-Lotz and Flügge moved with many of their colleagues to Paris to join the Office National d'Etudes et de Recherches Aerospatiales (ONERA).Flügge-Lotz served as Chief of a research group in aerodynamics until 1948 and published papers in both automatic control theory and aerodynamics, in which she discussed the problems arising from the increased speed of aircraft.Although Flügge-Lotz and her husband were happy living in Paris, the positions they held there provided limited opportunity for advancement.