Many aeronautical books of a purely descriptive nature have been written for the average man, but as a rule they contain little of interest for the more serious student of the subject. Other books of a highly technical and mathematical class have also been published, but their contents are all but unintelligible to anyone but a trained engineer. It is the purpose of the author to compromise between these two extremes, and give only that part of the theory and description that will be of practical use for the builder and flyer. The scope of the subjects covered in this volume has been suggested by the questions asked by students and clients, and is the result of many years’ correspondence with beginner aviators and amateur aeroplane builders.
JOHN B. RATHBUN.
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