Originally published in 1918 during the United States boom in aircraft production, this work was intended to educate mechanics in the methods of aviation engineering and maintenance. The First World War was still in full force and works like this were preparing the American aviation industry for a battle of the skies that showed no sign abating. This book is part of the World War One Centenary series; creating, collating and reprinting new and old works of poetry, fiction, autobiography and analysis. The series forms a commemorative tribute to mark the passing of one of the world's bloodiest wars, offering new perspectives on this tragic yet fascinating period of human history. Each publication also includes brand new introductory essays and a timeline to help the reader place the work in its historical context.