National Academy of Engineering Memorial Tributes: National Academy of Engineering, Volume 10
Membership Directory
PublisherNational Academies Press
Memorial Tributes: National Academy of Engineering, Volume 10

Search this Publication

  • Previous
  •    Table of Contents
  • Next
             VICTOR G.SZEBEHELY                                       229
                          VICTOR G.SZEBEHELY
                                BY RICHARD H.BATTIN
                VICTOR G.SZEBEHELY, professor of aerospace engineering and
            engineering mechanics at the University of Texas at Austin, died on September
            13, 1997, at the age of seventy-six. Victor was admired and respected throughout
            the celestial mechanics and aerospace community. His contributions were both
            fundamental and extensive. His unassuming manner, which concealed a giant
            intellect, endeared him to all his colleagues and students.
                Victor was born in Budapest, Hungary, in 1921. He managed to survive the
            Nazi occupation as a student and professor at the Technical University of
            Budapest. He received his M.S. degree in mechanical engineering in 1943 and his
            doctor of science degree in 1945 with a dissertation on the “three-body
            problem.” (It would be almost twenty years before he would return to this most
            favored topic.) He was an assistant professor during the last years of the war,
            teaching mathematics and writing five books. between 1944 and 1947: Calculus
            for Engineers (two volumes with two editions), Exercise in Analysis (two
            volumes), and GraphicalMethods in Applied Mathematics. Then he immigrated to
            Canada— one of a generation of scientists who emigrated from Europe after
            World War II. (I don’t remember Victor ever talking about life in Hungary in the
            war years, but he did keep in touch with many colleagues there throughout his
             VICTOR G.SZEBEHELY                                       230
                Victor spent a year in Canada as a lecturer at McGill University in Montreal
            and then moved to the United States as a research assistant at Pennsylvania State
            University. In 1948 he went to the Virginia Polytechnic Institute and spent three
            years as an associate professor teaching fluid mechanics and dynamics.
                Then began a six-year period from 1951 to 1957, during which he had three
            major responsibilities: lecturer at the University of Maryland, professorial
            lecturer at George Washington University, and manager of ship dynamics
            research at the David Taylor Model Basin. In 1954 he became a citizen of the
            United States. Two years later in 1956, a dimensionless number used in time-
            dependent unsteady flows was named “Szebehely’s number,” and in 1957 he was
            knighted by Queen Julianna of the Netherlands.
                The year 1957 was also the year of the Russian Sputnik and the advent of the
            space age. Victor returned to his first love, orbital mechanics. He was appointed
            manager of space dynamics research at the General Electric Company Space
            Sciences Laboratory in Philadelphia, Pennsylvania. He also was a summer
            institute lecturer at Yale University. Then, in 1963, he went back to the academic
            world for good—first, as a visiting and then an associate professor at Yale
            University. He concentrated his teaching and research on celestial mechanics,
            with particular emphasis on the three-body problem and produced a wealth of
            contributions for which he will always be remembered.
                His final move was to join the faculty of the University of Texas at Austin in
            1968. He served as chairman of the Department of Aerospace Engineering and
            Engineering Mechanics from July 1977 to September 1981 and held the Richard
            B.Curran Centennial Chair of Engineering.
                Victor was recognized for his many outstanding achievements by the
            American Astronautical Society (AAS) with the Dirk Brouwer Award in
            Celestial Mechanics and was named the first Brouwer Lecturer of the Dynamical
            Astronomy Division of the AAS at the 151st meeting of the Society in January
            1978. Earlier in the September and October 1977 issues of the journal Celestial
            Mechanics, volume 16, an equation used to determine the gravitational potential
            of the earth, planets, satellites and galaxies was named “Szebehely’s equation.”
             VICTOR G.SZEBEHELY                                       231
                The proceedings of the Seventh International Conference on Mathematical
            Methods in Celestial Mechanics were dedicated to him on the occasion of his
            sixtieth birthday (1981). The next year he was elected to membership in the
            National Academy of Engineering, and in 1984 he was elected a fellow of the
            American Institute of Aeronautics and Astronautics.
                An avalanche of honors followed: the Vanderlinden Award of the Belgian
            Royal Academy for scientific activities in 1987, and honorary doctor degree from
            Eötvös University of Budapest in 1991, election to membership in the European
            Academy in 1992, the Hocott Distinguished Centennial Engineering Award from
            the University of Texas in 1992, and the General Electric Senior Research Award
            from the American Society of Engineering Education in 1994.
                Victor’s major opus, Theory of Orbits, was published by the Academic Press
            in 1967 and reprinted in 1977. There was also a Russian translation by Duboshin
            and Romashov. It was an advanced reference text on the restricted problem of
            three bodies with theories and applications concerning periodic orbits, space
            trajectories, stability, and dynamical astronomy. His last book was pleasant,
            enjoyable, and eminently readable with the intriguing title Adventures in
            Celestial Mechanics. A second and expanded edition was published in 1998 by
            Hans Mark, a friend and colleague, the year after Victor passed away.
                I first meet Victor when the Summer Institute of Dynamical Astronomy was
            held at the Massachusetts Institute of Technology in 1968 and 1969. He had a
            marvelously droll sense of humor and was a truly delightful person to know. My
            wife, Marge, and I enjoyed a pleasant evening with Victor at a lobster cook-out
            on an island in Boston Harbor that summer in 1968. Later, when I told Victor
            that I was presenting a paper in Budapest at the 34th Congress of the International
            Astronautical Federation in October of 1983, he volunteered to write several of
            his Hungarian friends. Three of them contacted us during our stay in Budapest,
            and each gave us a private tour of his favorite haunts in and around the city. We
            remember fondly two wonderful evenings with Béla Balázs and his charming
            wife both in Budapest and in Vienna.
             VICTOR G.SZEBEHELY                                       232
                I recall with fondness a talk Victor gave during a plenary session at one of
            the astrodynamics conferences a few years ago. It concerned the chaos exhibited
            in the three-body problem that was a totally new phenomenon to me. I, together
            with the rest of the audience, was fascinated indeed. It was a pleasure to watch a
            real master make such a wonderful presentation.
                I last saw Victor in Halifax, Nova Scotia, Canada, at an astrodynamics
            specialists meeting in August 1995. I learned of his death from one of my
            Massachusetts Institute of Technology students, who had done her undergraduate
            work with Victor the previous June at the University of Texas. It was sad news
                Victor Szebehely was a wonderful friend, unpretentious, generous, and
            kind. It was a pleasure to know him, and he will be truly missed.
             VICTOR G.SZEBEHELY                                               233
    • Previous
    •    Table of Contents
    • Next