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Direct Lift in Theory

Direct Lift in Theory THE helicopter was the first method of mechanical flight by which success was achievedalthough only in model form. Centuries before a powerdriven model aeroplane flew, toy helicopters with some form of string or rubber propulsion were common objects of the nursery. As a scientific model, it dates back at least to the days of Leonardo da Vinci, among whose papers is a sketch of a practical design of a helicopter with which he experimented. This is not altogether surprising because, except for the ornithopter based on the close analogy of bird flight, it provides the most obvious method of getting off the ground, by rising direct from it. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Direct Lift in Theory

Aircraft Engineering and Aerospace Technology , Volume 8 (10): 2 – Oct 1, 1936
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb030100
Publisher site
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Abstract

THE helicopter was the first method of mechanical flight by which success was achievedalthough only in model form. Centuries before a powerdriven model aeroplane flew, toy helicopters with some form of string or rubber propulsion were common objects of the nursery. As a scientific model, it dates back at least to the days of Leonardo da Vinci, among whose papers is a sketch of a practical design of a helicopter with which he experimented. This is not altogether surprising because, except for the ornithopter based on the close analogy of bird flight, it provides the most obvious method of getting off the ground, by rising direct from it.

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Oct 1, 1936

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