Sail Boats
When sailing into the wind, the dynamics that propel a sailboat forward are the same that create lift for an airplane. The term leading edge refers to the part of the sail that first contacts the wind. A fine tapered leading edge that doesn't disturb the flow is desirable since 90% of the drag on a sailboat owing to sails is a result of vortex shedding from the edges of the sail. Sailboats utilize a mast to support the sail. To help reduce the drag and poor net sail performance, designers have experimented with masts that are more aerodynamically shaped, rotating masts, wing masts, or placed the mast behind the sails as in the mast aft rig.
Read more about this topic: Leading Edge
Famous quotes containing the words sail and/or boats:
“Ships at a distance have every man’s wish on board. For some they come in with the tide. For others they sail forever on the same horizon, never out of sight, never landing until the Watcher turns his away in resignation, his dreams mocked to death by Time. That is the life of men. Now, women forget all those things they don’t want to remember, and remember everything they don’t want to forget. The dream is the truth. Then they act and do things accordingly.”
—Zora Neale Hurston (1891–1960)
“Fortune brings in some boats that are not steer’d.”
—William Shakespeare (1564–1616)