The main spanwise structural member(s) of the wing that run from wing tip to wing root. Spars help prevent the wing from overly flexing or failing during flight maneuvers. Wings with solid cores may not have spars. Report this Word Added by: fritzke
In an aircraft, the spar is the main structural member of the wing, running lengthways across the span of the wing, at right angles (or thereabouts) to the fuselage. The spar carries all of the forces of both lift, and the weight of the wings on the ground. Other structural and forming members such as ribs may be attached to the spar or spars.
An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein.
In mineralogy, 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. Amongst miners the term is frequently used alone to express any bright crystalline substance.
Software Product Authorization Request. A licensing method where licenses are generated by the Alias|Wavefront Sales Support team. For details, see the Installation and Licensing Guide. Contrast with Online Product Activation (OPA).
A spar tree is a tree used in High Lead logging to which loggers attach cables and use it to guide logs. This technique was especially popular in logging on the West coast of North America where difficult terrain required greater precision in guiding logs. Selecting a tree as a spar is a particularly important task, as loggers need to ensure that the tree is strong and free of rot and will withstand the weight and pressure required.