Abstract PREFACE TO THE FOURTH EDITION The wide use of the first three editions of the book, both by the general public and by schools and colleges, has indicated to the authors that their hope of meeting a definite need in aeronautical literature has been fulfilled. Like its predecessors, this edition is intended primarily for the reader who desires a sound knowledge of the basic principles and a broad view of the present development of the airplane and its power plant, without giving to the...

Abstract PREFACE This volume attempts two things: to formulate existing knowledge of the functioning of the airplane engine and its auxiliaries; and to present and discuss the essential constructive details of those engines whose excellence has resulted in their survival. The material here collected is largely new; very little of it could have been written before the war and only a small fraction was available for publication before 1919. It is based mainly on the researches and engine developments...