The story of the jet engine has everything: genius, tragedy, heroism, a world war, the individual vs. the state and an idea that would change the world. Frank Whittle himself maintained that he was held back by lack of government support. At the very moment in 1943 when his invention was unveiled to the world ('Britain has fighter with no propeller' ran the Daily Express headline), his company, Power Jets, was forcibly nationalised. In fact, as Andrew...