Frank Whittle wanted to create a new kind of engine to power a war winning jet fighter that would take on the might of the German Luftwaffe but he suffered huge resistance from big business, the government and scientific community. In 1937 Whittle ran the world's first turbojet engine leading to a revolution in the way we travel - all of today's jet engines can trace their origin to Whittle's work. Frank Whittle's son, Ian, reveals his father to be a mathematical genius, but someone who was also a workaholic, becoming obsessed with his invention which had profound effects on Whittle's personal health and his family life.