[1] He opened a bicycle factory in Bexhill-on-Sea, and in 1905, built his first lightweight, water-cooled aircraft engine.
Early Green engines were used by British aviation pioneers such as Alliott Verdon Roe and Samuel Cody, but his later engines proved too heavy for the aircraft of that time.
[citation needed] After World War II, Green became involved in the development of the 'flexible deck' concept for aircraft carriers.
His ideas for such a deck culminated in the successful landing of a de Havilland Sea Vampire, flown by Eric "Winkle" Brown, on an experimental rubber deck installed on HMS Warrior.
He died in December 1964, at his home in Twickenham, only a few months before what would have been his 100th birthday.