Doctor of Philosophy, U. Witwatersrand, Johannesburg, South Africa, 1969.
Senior research officer, Council for Science and Industrial Research, Johannesburg, 1960-1969; technical manager, Jet Propulsion Laboratory, Pasadena, California, 1969-1987; planning manager, Jet Propulsion Laboratory, Pasadena, 1982-1987; technical executive, assistant to director, Jet Propulsion Laboratory, Pasadena, 1987-1998; retired, Jet Propulsion Laboratory, Pasadena, 1998. Visiting researcher Jet Propulsion Laboratory, 1965-1966. Member of advisory committee Department Energy's Solar Assessment Committee, 1978-1980, Blue Ribbon Review Panel National Aeronautics & Space Administration, Washington, 1990, technical advisory group American National Standards Institute, New York City, since 1990.
Fellow Royal Aero. Society (London), American Institute of Aeronautics and Astronautics (chairman standards executive county 1990-1994, chairman standards technical county 1988-1990, vice president 1991-1994), Internat.Astronautical Federation (deputy vice president since 1992), International Standards Organisation (Chairman of Commission on space system and operations since 1993), International Academy Astronautics, Paris (Chairman of Commission on safety and quality since 1997).
Married Anita Claire Menke, May 5, 1962. Children: Stewart, Warwick, Matthew.