No, it’s not helicopters. Speech will go today about snakes. You ask: can l find something in common between these very different devices? It is possible… the fact that the serpent flies by created any element of the lifting force, be it habitual plate, box frame, covered with paper, or something else. In short — you need a lifting force. And for its creation can be as “something else” to come and propeller similar to a helicopter, or the wheel of Magnus. What kind of wheel? Explain in more detail.
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