Le fuselage doit être capable de résister aux contraintes provoquées par la vitesse de vol, la pression atmosphérique et le poids de son contenu. TRUSS TYPE Most early aircraft used this technique with wood and wire trusses and this type of structure is still in use in many lightweight aircraft using welded steel tube trusses. September 1 . The ‘skin’ or the cover is only for giving the aerodynamic surface. Monocoque. The truss-framed fuselage is generally covered with fabric.
The predominant types of fuselage structures are the monocoque (i.e., kind of construction in which the outer skin bears a major part or all of the stresses) and semimonocoque. The truss type fuselage frame is assembled with members forming a rigid frame e.g. Trusses are an extremely strong, well-accepted, cost-effective option for the construction of various structures. To maximize the efficiency of the structure (which is often measured in the material used or labor), an appropriate truss type should be selected for the design. In part 6 we looked at the structural make-up of the wing. Truss type fuselage construction carried the total load on its rigid TRUSS framework. Wings The wings are airfoils attached to each side of the fuselage and are the main lifting surfaces that support the airplane in !ight. Le corps principal d'un avion ou d'un hélicoptère, le fuselage, prend en charge les moteurs, les passagers et le fret. Today we will explore what types of structures are out there and how they can benefit your design. beams, bar, tube etc… Primary members of the truss are 4 ... are discussed in more detail under aircraft construction later in the chapter. Truss-type fuselage structure.
Hence, ‘stressed skin’ construction came into the fuselage. Monocoque fuselages use a rigid outer skin attached to a series of bulkheads that are supported by stringers. There are numerous wing designs, sizes, and shapes used by the various manufacturers. Principaux types de fuselage Construction . The next logical step in aircraft structural development came with the discovery of a form of construction in which loads are carried in the outside skin. A third type of fuselage, semi-monocoque, is a hybrid of the two. In this post, we move away from the wing and introduce the aircraft fuselage: we’ll look at the various ways to construct a fuselage, how to size it correctly, and introduce the various loads that the fuselage structure is expected to carry during operation. There are two primary types of fuselage construction methods used in the aircraft industry, monocoque and welded truss. A truss is a rigid framework made up of members such as beams, struts, and bars to resist deformation by applied loads. These structures provide better strength-to-weight ratios for the fuselage covering than the truss-type construction used in earlier planes. There are two general types of fuselage construction, the truss type, and the monocoque type.
This is part 7 of a series on the Fundamentals of Aircraft Design.
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