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Model Aeroplanes and Their Engines: A Practical Book for Beginners cover

Model Aeroplanes and Their Engines: A Practical Book for Beginners

Chapter 24: THE DART COMPRESSED AIR DRIVEN MODEL
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About This Book

This practical guide introduces model aeroplane hobbyists to the history, materials, and step-by-step construction techniques needed to build and fly models. It explains propeller design and carving, wing and frame construction, assembly, launching methods, chassis and pontoon fabrication, and includes measured diagrams and photographs. Sections survey powerplants and propulsion — rubber, compressed-air, gasoline, steam, and carbonic gas engines — and offer simple engine plans and performance data. The work also presents notable record models and flight examples, practical advice on forming clubs and competitions, and a concise dictionary of aeronautical terms for beginners.

THE DART COMPRESSED AIR DRIVEN MODEL

In the accompanying illustration is shown a model aëroplane of monoplane type driven by a three-cylinder rotary engine which was constructed by Edward Willard Dart of South Norwalk, Connecticut.

The engine was constructed after several months of patient labor. Careful judgment was exercised in the drafting of the plane and likewise in the assembling of the engine for it is absolutely essential that all parts be properly fitted as to enable the engine to run smoothly. In designing the wings every detail was taken into consideration to insure good flying.