James Mallinson, known as Graham, was watching the airshow from the A27 when he was killed.
Sussex Police said Mr Mallinson, 72, was a retired engineer from Newick, East Sussex.
Mr Mallinson’s family said he was a passionate steam railway enthusiast and brilliant photographer.
A statement issued by the family said: “He was the kindest and most generous man, who regularly gave his time to help others. Always loyal and reliable, he was a private and loving family man with a great sense of humour. A very caring husband and father who was dearly loved, he will be very sorely missed by all his family and the wide circle of friends who had the good fortune to know him.
“Educated at Dulwich College, he joined Tannoy in the 1960s - moving on to hold various posts in the electronics industry until his retirement. As a highly respected engineer, he was a perfectionist in everything he did and this carried through into his private life, including photography.
“He was a life member and active volunteer of the Bluebell Railway, contributing a wealth of knowledge and experience over many years.
“More recently he developed an interest in photographing vintage aircraft and was at Shoreham to capture one of the last flights of the Vulcan bomber.
“He loved driving and covered thousands of miles throughout the UK- from the Scottish Highlands to the West Country - in his pursuit of steam. His hobby also took him overseas to South Africa as well as Ireland, Isle of Man and the Isle of Wight.
“He was at the right place at the wrong time, doing what he loved best on a beautiful summer’s day.”
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