In 1976, his marriage to Dorothy was dissolved and he married American Hazel S. Hall. He emigrated to the US and the following year accepted the position of NAVAIR Research Professor at the United States Naval Academy (Annapolis, Maryland)., RAF history website His research concentrated on the boundary layer before his professorship became part-time from 1978 to 1979. The part-time post enabled him to write a textbook entitled Gas turbine aero-thermodynamics: with special reference to aircraft propulsion, published in 1981.
In 1976 his marriage to Dorothy was dissolved and he married American Hazel S Hall He emigrated to the US and the following year accepted the position of NAVAIR Research Professor at the United States Naval Academy (Annapolis Maryland) RAF history website His research concentrated on the boundary layer before his professorship became part-time from 1978 to 1979 The part-time post enabled him to write a textbook entitled Gas turbine aero-thermodynamics with special reference to aircraft propulsion published in 1981