windsail
Windsail is a term used to describe a sail that captures wind to propel a vessel or vehicle. In everyday language it can refer to any sail on a sailing craft, but in modern nautical engineering it is often associated with wing sails—rigid or semi-rigid sails shaped like airfoils that generate lift as well as drag.
Traditional sails are fabric panels stretched along a mast and boom. Windsails in the wing-sail category use
The basic idea of using wind to propel vessels dates back centuries. The wing-sail concept gained prominence
Wing sails can offer higher lift-to-drag ratios and better upwind efficiency under certain wind conditions, potentially