High Quality Content by WIKIPEDIA articles! Chapman served with the Royal Australian Air Force Reserve from 1953 to 1955. He learned to fly (in a Tiger Moth) during Australian National Service. From 1956 to 1957, he worked for Philips Electronics Industries Proprietary Limited in Sydney, Australia. He then spent 15 months in Antarctica with the Australian National Antarctic Research Expeditions (ANARE), for the International Geophysical Year (IGY) as an auroral/radio physicist. The work required that he spend most of the winter with one other man at a remote camp. From 1960 to 1961, he was an electro-optics staff engineer in flight simulators for Canadian Aviation Electronics Limited in Dorval, Quebec. His next assignment was as a staff physicist at the Massachusetts Institute of Technology, where he worked in electro-optics, inertial systems, and gravitational theory until the summer of 1967.