It will be noted that the emphasis in this book is on the turbo-jet engine and that no special part deals with the propeller-turbine engine. This is because the working principles of both engine types are essentially the same. However where differences in function or application do exist, these are described. The aero gas turbine is being continually developed to provide improved performance for each new generation of aircraft; the fourth edition of this book has been revised and expanded to include the latest aero gas engine technology.
