Forces on sails to stay within the limitations of a craft's stability and power requirements, which are functions of hull (for boats) or chassis (for land craft) design. Sails derive power from wind that varies in time and with height above the surface. In order to do so, they are designed to adjust to the wind force for various points of sail. Both their design and method for control include means to match their lift and drag capabilities to the available apparent wind, by changing surface area, angle of attack, and curvature. Wind speed increases with height above the surface; at the same
Scarlet Sails (band) Scarlet Sails (band) Scarlet Sails is an indie rock band from New York City, formed in 2015 by founding members Olya Viglione (lead vocals, guitar, piano, ukulele) and Brian Viglione (drums, backing vocals, guitar). The band’s name comes from the 1923 adventure novel by Russian author Alexander Grin, a story about dreams coming true, no matter how silly, futile, or far-fetched they may seem. The young heroes in the story, Assol and Gray, are described as dreamers, misunderstood by those around them. Gray, a wealthy heir, wants to become a captain and runs away from home to fulfill his dream,