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  2. These Shade Sails Turn Your Sun-Drenched Yard Into a Cool ...

    www.aol.com/beat-heat-summer-highly-rated...

    Waterproof Triangle Shade Sail. With most shade sails, when a rain cloud hangs over your backyard, it's time to move inside. But this option is truly waterproof, made with super-durable 220 GSM ...

  3. Shade sail - Wikipedia

    en.wikipedia.org/wiki/Shade_sail

    Shade sail over playground in Australia. A shade sail − or somewhat more precise a textile sunshade sail or a textile sun protection sail − is a device to create outdoor shade based on the textile basic technology that can be found in a ship's sail. [1] Shade sails use a flexible membrane tensioned between several anchor points. While ...

  4. Sail components - Wikipedia

    en.wikipedia.org/wiki/Sail_components

    Sail components include the features that define a sail's shape and function, plus its constituent parts from which it is manufactured. A sail may be classified in a variety of ways, including by its orientation to the vessel (e.g. fore-and-aft) and its shape, (e.g. (a)symmetrical, triangular, quadrilateral, etc.).

  5. Forces on sails - Wikipedia

    en.wikipedia.org/wiki/Forces_on_sails

    Sails are classified as "triangular sails", "quadrilateral fore-and-aft sails" (gaff-rigged, etc.), and "square sails". [38] The top of a triangular sail, the head , is raised by a halyard , The forward lower corner of the sail, the tack , is shackled to a fixed point on the boat in a manner to allow pivoting about that point—either on a mast ...

  6. Crab claw sail - Wikipedia

    en.wikipedia.org/wiki/Crab_claw_sail

    The crab claw sail consists of a sail, approximately an isosceles triangle in shape. The equal length sides are usually longer than the third side, with spars along the long sides. Austronesian sails typically have spars along two edges of the sail. This is to distribute the loads of sheets and other point loads on the sail.

  7. Diffractive solar sail - Wikipedia

    en.wikipedia.org/wiki/Diffractive_solar_sail

    A diffractive solar sail, or diffractive lightsail, is a type of solar sail which relies on diffraction instead of reflection for its propulsion. [ 1 ] [ 2 ] Current diffractive sail designs use thin metamaterial films, containing micrometer-size gratings based on polarization or subwavelength refractive structures, causing light to spread out ...

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