A leading research aerodynamicist in academe and the aerospace industry from the 1930s through the 1970s. He worked with Douglas Aircraft (1937-46) and served as chair of aerospace studies at the Johns Hopkins University (1946-60). Later he served in a variety of academic positions, notably as the Clark B. Millikin Professor of Aerospace Engineering at the California Institute of Technology from 1969 until his retirement in 1980.
