A B C Wing tip Front spar Leading edge strip Drag wire or tie rod Nose rib or false rib Anti-drag wire or tie rod Aileron False spar or aileron spar Wing butt rib (or compression rib or bulkhead rib) Wing rib or plain rib Wing attach fittings Rear spar Aileron hinge 1-16 Figure 1-32.  Basic wood wing structure and components. Figure 1-31.  Examples of wing ribs constructed of wood.  names that reflect their uniqueness. For example, ribs that  are located entirely forward of the front spar that are used to  shape and strengthen the wing leading edge are called nose  ribs or false ribs. False ribs are ribs that do not span the entire  wing chord, which is the distance from the leading edge to  the trailing edge of the wing. Wing butt ribs may be found  at the inboard edge of the wing where the wing attaches  to the fuselage. Depending on its location and method of  attachment, a butt rib may also be called a bulkhead rib or  a compression rib if it is designed to receive compression  loads that tend to force the wing spars together.  Since the ribs are laterally weak, they are strengthened in some  wings by tapes that are woven above and below rib sections  to prevent sidewise bending of the ribs. Drag and anti-drag  wires may also be found in a wing. In  Figure 1-32,  they are  shown crisscrossed between the spars to form a truss to resist  forces acting on the wing in the direction of the wing chord.  These tension wires are also referred to as tie rods. The wire  designed to resist the backward forces is called a drag wire;  the anti-drag wire resists the forward forces in the chord  direction.  Figure 1-32  illustrates the structural components  of a basic wood wing. weight. A continuous gusset stiffens the cap strip in the plane  of the rib. This aids in preventing buckling and helps to obtain  better rib/skin joints where nail-gluing is used. Such a rib can  resist the driving force of nails better than the other types.  Continuous gussets are also more easily handled than the many  small separate gussets otherwise required.  Figure 1-31C  shows  a rib with a lighten plywood web. It also contains gussets to  support the web/cap strip interface. The cap strip is usually  laminated to the web, especially at the leading edge. A wing rib may also be referred to as a plain rib or a main rib.  Wing ribs with specialized locations or functions are given  At the inboard end of the wing spars is some form of wing  attach fitting as illustrated in  Figure 1-32.  These provide  a strong and secure method for attaching the wing to the  fuselage. The interface between the wing and fuselage is often 