Peter Henry Calder OBE FREng (25 February 1926Companies House - 31 August 2013) was a British mechanical engineer; he was head of the development of the engine programme for Concorde.

Early life He was born in Switzerland. He attended Imperial College London.

Career De Havilland Engines He worked for the de Havilland Engine Company,Flight International 22 October 1954 working at their Gas Dynamics Laboratory in Hertfordshire.

Rolls-Royce

Bristol-Siddeley had been formed on 1 February 1959, when Bristol Aero-Engines Ltd merged. On 1 April 1962, Bristol Siddeley took the assets of De Havilland Engine Company Ltd. Rolls-Royce in the 1950s or early 1960s had not, by contrast, similarly acquired smaller companies.

In the late 1970s he was Project Director for the Rolls-Royce RB.2211-22B.Flight International, 1 March 1980

Concorde By 1965 he was assistant chief engineer of the Olympus 593 project,Flight International 3 June 1965 later becoming chief engineer.Times, 27 May 1971, page VI He was technical director of Rolls-Royce at Filton (Bristol Siddeley until 1968), when the engines (Rolls-Royce/Snecma Olympus 593 twin-spool turbojet) for the BAC Concorde were being developed.Flight International 30 October 1976 Brian Calvert was Concorde's flight manager, with whom he worked closely.

Personal life He was awarded the OBE in the 1976 New Year Honours.1976 OBE He married Mary, who died on 29 December 2015. He lived in Portishead, North Somerset. He died 31 August 2013 after a long illness aged 87.

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