My father, Roy Ewan, who died aged 94, was head of design and engineering of Vulcan Mk 2 bombers and one of the leading designers of British aircraft after the war . The Vulcan, designed as a nuclear deterrent, was a radical design and was the greatest moment of the delta-wing aircraft ever built. One hundred thirty-six of the attackers were made for the RAF and was in operation from 1956 to 1984. The only time I participated in a combat mission during the Falklands War, when used to drop conventional weapons. A plane is still maintained by fans and Roy was very proud to see its first flight after being made airworthy again in 2007.

Born in Torquay, Devon, won a scholarship to the school of St. Paul, London, and graduated from Imperial College London, with a first in mechanical engineering and a postgraduate degree in aeronautical engineering more. During World War II, Roy worked at the establishment of Royal Aircraft at Farnborough, Hampshire, and after D-Day was sent to France to evaluate the program of German aircraft in the territory formerly occupied , continuing after the Allied advance into Belgium and Germany itself, where he was assigned to the Sixth Army Group.

In 1999 Roy had a stroke and he and Enid, who was diagnosed with Alzheimer's disease, moved to a residence in Virginia Water, Surrey, where he died in 2005 . Roy is survived by brothers Michael, John and Nick, and I, and seven grandchildren.