William Hawthorne

Sir William Rede Hawthorne CBE, FRS, FREng, FIMECHE, FRAES, (22 May 1913 – 16 September 2011) was a British professor of engineering who worked on the development of the jet engine.

Hawthorne was born in Newcastle-upon-Tyne, England, the son of a civil engineer from Belfast. He was educated at Westminster School, London, then read mathematics and engineering at Trinity College, Cambridge, graduating in 1934 with a double first. He spent two years as a graduate apprentice with Babcock & Wilcox Ltd, then went to the Massachusetts Institute of Technology (MIT) in Cambridge, MA, where his research on laminar and turbulent flames earned him a ScD two years later. In 1939 he married Barbara Runkle (d. 1992, granddaughter of MIT's second President John Daniel Runkle), and they had one son and two daughters.

After MIT, he returned to Babcock & Wilcox. In 1940, he joined the Royal Aircraft Establishment at Farnborough. He was seconded from there to Power Jets Ltd at Lutterworth, where he worked with Frank Whittle on combustion chamber development for the jet engine. Building on his work on the mixing of fuel and air in flames at MIT, he derived the mixture for fast combustion; the chambers produced by his team were used in the first British jet aircraft.

In 1941, he returned to Farnborough as head of the newly formed Gas Turbine Division and in 1944 he was sent for a time to Washington to work with the British Air Commission. In 1945, he became Deputy Director of Engine Research in the British Ministry of Supply before returning to America a year later as an Associate Professor of Engineering at MIT. He was appointed George Westinghouse Professor of Mechanical Engineering there at the age of 35, and in 1951 returned to Cambridge, UK as the first Hopkinson and Imperial Chemical Industries Professor of Applied Thermodynamics (1951–1980). Hawthorne's most outstanding work at Cambridge was in the understanding of loss mechanisms in turbomachinery, and during his time as Head of Department he and Professor John Horlock (later Vice-Chancellor of the Open University) established the Turbomachinery Laboratory.

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