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A spar is a round timber or metal pole used on a sailing ship. Masts, booms, gaffs, or yards are all examples of spars. Wooden ships from the age of sail often carried many extra spars of all types for repairs while at sea. The spar deck of a frigate was called such as it was used to carry spare spars.
Spars of all types are used in the rigging of sailing ships to resist compressive and bending forces, and to provide support for the sails.
In an aircraft, the spar is the main structural member of the wingFor some other uses of the word "wing" please see Wing (disambiguation . Laughing Gull on the beach in Atlantic City. Birds' bones are hollow, to cut down on weight and allow flight A wing is a surface used to produce an aerodynamic force normal to the di, running lengthways across the span of the wing, at right angles (or thereabouts) to the fuselageIn an aircraft, the fuselage is the main body section that holds crew and passengers or cargo. In single engine aircraft it will usually contain an engine, athough in some amphibious aircraft the single engine is mounted on a pylon attached to the fuselag. The spar carries all of the forces of both liftFluid dynamics Lift consists of the sum of all the aerodynamic forces normal to the direction of the external airflow. Lift is created as an airstream passes by an airfoil which deflects the air flow downward. The force created by this deflection (acceler, and the weight of the wings on the ground. Other structural and forming members such as ribIn anatomy, the ribs (la. costae are those bones which form the rib cage these surround the thorax ( chest) of vertebrates. The function of the ribs is to protect the lungs, heart, and other internal organs of the thoracic cavity. The human skeleton has 2s may be attached to the spar or spars. There may be more than one spar in a wing, though in general one carries the majority of the forces on it, and is called the main spar.
Spar is a term employed to include a great number of crystallized, earthy, and some metallic substances, which easily break into rhomboidal, cubical, or laminated fragments with polished surfaces, but without regard to the ingredients of which they are composed. Among miners the term is frequently used alone to express any bright crystalline substance.