Flight Without Formulae: Simple Discussions On The Mechanics Of The Aeroplane is a book written by Commandant Duchene and first published in 1916. The book is a comprehensive guide to the mechanics of aeroplanes, written in a simple and accessible style that is easy for readers to understand. It covers a wide range of topics, including the principles of flight, the structure and design of aeroplanes, and the various components and systems that make...