Abstract Preface: This book is not an autobiography. It is primarily the history I of my association with the development of the turbo-jet engine in Great Britain. I have included a very brief account of my life prior to my practical work on the turbo-jet engine, in order that the reader may have some idea of the nature of the soil in which the seed of an idea took root and flourished. I have been unable to resist the temptation to include a certain amount of "There I was, upside down, nothing on the...