Category: Engineering & Technology
Model aeroplanes The building of model monoplanes, biplanes, etc., together with a chapter on building a model airship
Why does an aeroplane fly? The question is worthy of close examination. There is one common enemy to aeroplanes—the force of gravity. Were it not for the existence of this force, which, as Newton put it, “is unseen and unheard and yet dominates the universe,” the problem of th...