Hayne Constant, C.B.

Order of the Bath

The Most Honourable Order of the Bath is a British order of chivalry founded by George I on 18 May 1725. The name derives from the elaborate mediæval ceremony for creating a knight, which involved bathing as one of its elements. The knights so created were known as Knights of the Bath...

, C.B.E

Order of the British Empire

The Most Excellent Order of the British Empire is an order of chivalry established on 4 June 1917 by George V of the United Kingdom. The Order comprises five classes in civil and military divisions...

., F.R.S, F.R.Ae.S. (26 September 1904 - 12 January 1968) was an English mechanical and aeronautical engineer who developed jet engines during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

.

Constant was born at Gravesend, the son of Frederick Charles Constant and his wife Mary Theresa (Tissie) Hayne. His father was a dental surgeon in Folkestone. Hayne was educated at King's College Choir School Cambridge, King's School, Canterbury, The Technical Institute Folkestone, Sir Roger Manwood's School, Sandwich and Queens College, Cambridge. He stayed at Cambridge for a post graduate year in 1927/28 and then joined the Royal Aircraft Establishment

Royal Aircraft Establishment

The Royal Aircraft Establishment , was a British research establishment, known by several different names during its history, that eventually came under the aegis of the UK Ministry of Defence , before finally losing its identity in mergers with other institutions.The first site was at Farnborough...

 at Farnborough. He became a member of the Institute of Mechanical Engineers. After six years he joined Imperial College.

In 1936 Henry Tizard

Henry Tizard

Sir Henry Thomas Tizard FRS was an English chemist and inventor and past Rector of Imperial College....

 persuaded Constant to return to the RAE from Imperial College to help with the development of Griffith's turbine

Turbine

A turbine is a rotary engine that extracts energy from a fluid flow and converts it into useful work.The simplest turbines have one moving part, a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades, or the blades react to the flow, so that they move and...

 engine designs. A series of engines to Griffith's design were built under Constant's direction at RAE. Hayne was director of the National Gas Turbine Establishment

National Gas Turbine Establishment

The National Gas Turbine Establishment in Fleet, part of the Royal Aircraft Establishment , UK was the prime site in the UK for design and development of gas turbine and jet engines. It was created by merging the design teams of Frank Whittle's Power Jets and the RAE turbine development team run...

 from 1948 to 1960, and was awarded the Gold Medal of the Royal Aeronautical Society

Royal Aeronautical Society

The Royal Aeronautical Society, also known as the RAeS, is a multidisciplinary professional institution dedicated to the global aerospace community.-Function:...

in 1963 for his outstanding contribution to gas turbine development. In 1964 he became Chief Scientist (R.A.F.) at the Ministry of Defence.

Constant died unmarried at the age of 64.