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In the wings or horizontal stabilizer, longerons run spanwise (from wing root to wing tip) and attach between the ribs. The primary function here also is to transfer the bending loads acting on the wings onto the ribs and spar. Sometimes the terms "longeron" and "stringer" are used interchangeably.
Wing ribs of a de Havilland DH.60 Moth. In an aircraft, ribs are forming elements of the airframe structure of a wing, especially in traditional construction.. By analogy with the anatomical definition of "rib", the ribs attach to the main spar, and by being repeated at frequent intervals, form a skeletal shape for the wing.
The spar carries flight loads and the weight of the wings while on the ground. Other structural and forming members such as ribs may be attached to the spar or spars, with stressed skin construction also sharing the loads where it is used. There may be more than one spar in a wing or none at all.
The internal structure comprises stringers, spars, bulkheads, chord members, and various attaching fittings made of aluminum extrusions, formed sheet, forgings, and castings. The alloys most used for extruded members are 2024-T4 for sections less than 0.125 in. thick and for general application, and 2014-T6 for thicker, more highly stressed ...
While internal wing structure commonly provides much of the strength via a combination of spars, ribs and stringers, the external skin typically carries a proportion of the loads too. On many aircraft, the inner volume of the wingbox has also been used to store fuel, which is commonly referred to as being a wet wing design. [1]
The aircraft has a 4130 steel tube frame fuselage and a wing constructed with dual aluminium I-beam spars, with stamped aluminum wing ribs, all covered in doped fabric. The wings are supported by V-struts and jury struts. The landing gear is bungee suspended. The Sparrow has a fully enclosed cockpit design, allowing flying in cooler weather.
The Easy Riser is constructed with an aluminium structure and stamped ribs, covered in doped aircraft fabric covering, Mylar or other coverings. The pilot sits on a fabric sling seat. Engines used include the 11 hp (8 kW) McCulloch MAC-101, 15 hp (11 kW) Hirth F-36 and Solo 210. [1]
Gunter rigged Lobster 12.5. Gunter rig is a configuration of sail and spars used in sailing. It is a fore and aft sail set abaft (behind) the mast. The lower half of the luff (front) of the sail is attached to the mast, and the upper half is fastened to a spar which is approximately vertical and reaches above the top of the mast.