The mechanics of the aeroplane, a study of the principles of flight
A 1912 English translation by John Ledeboer and T. O'Brien Hubbard of Captain Émile Duchêne's treatise on flight mechanics, published in London and New York by Longmans, Green for engineers and early aviators. Line figures show wing sections, force vectors, propeller blade angles and centre-of-gravity lines, lettered A–D with dotted construction lines, usable as spare technical diagram elements.


