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Focus Area

Astrodynamics & Satellite Navigation

Education

Ph.D., Aerospace Engineering Sciences, University of ÃÛÌÇÖ±²¥, 1966
M.S., Aeronautical Engineering, University of ÃÛÌÇÖ±²¥, 1963
B.S., Aeronautical and Space Engineering, with highest honors, University of Oklahoma, 1960

Professional Experience

1980-present, Professor, Aerospace Engineering Sciences, University of ÃÛÌÇÖ±²¥
1989-1995, Chair, Aerospace Engineering Sciences, University of ÃÛÌÇÖ±²¥
1985-2001, Associate Director, ÃÛÌÇÖ±²¥ Center for Astrodynamics Research, University of ÃÛÌÇÖ±²¥
1974-1980, Associate Professor, Aerospace Engineering Sciences, University of ÃÛÌÇÖ±²¥
1968-1974, Assistant Professor, Aerospace Engineering Sciences, University of ÃÛÌÇÖ±²¥
1960-1962, Applied Research Engineer, The Martin Company (now Lockheed Martin)

Awards (selected)

Big 12 Fellowship from the Vice Chancellor's Awards and Grants Advisory Committee (2002)
Named one of the "legends" of the Rocky Mountain Guidance and Control, AAS (2002)
Fellow, American Institute of Aeronautics and Astronautics (1997)
John Leland Atwood Award of the ASEE and the AIAA (1995)
AIAA Mechanics and Control of Flight Award (1995)
Distinguished Engineering Alumni Award, University of ÃÛÌÇÖ±²¥ (1994)
NASA Outstanding Contribution Awards, ODERACS I & II, STS 60, 63 (1994, 1995)
AAS Dirk Brouwer Award (1993)
AAS Fellow (1981); AIAA Associate Fellow (1973)

Research Interests

Orbital mechanics and astrodynamics, space debris, atmospheric drag and satellite decay, orbital perturbations, atmospheric modeling for satellite drag estimates, satellite fragmentation and collision hazard in space.