Sail

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Mac Sweeny, 1844, Essay on Aerial Navigation, p. 11:

One is apt to exclaim, why not use sails, oars, and a rudder? Sails are useless, the wind does not strike them, because the balloon moves as fast as the wind.

This wiki has 71 patents categorized in "sail" or "sails".

Patents in categories sail or sails

Publications referring to sail or sails

Enclosing categories Navigation, Propulsion
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