Boeing 737 Fuselage DesignINTRODUCTIONIn order to study the stresses around a crack developed in a fuselage and its propagation, we mainly need to carry out the CAD design of a fuselage. In particular, a section of the fuselage frame is necessary to achieve the project objective. Boeing data provided in the public domain serves as a guideline for the fuselage design of this project. For successful fuselage design, we need the detailed dimensions of the following parts: a) Fuselage skinb) Bulkheadc) Longround) RivetsThe above parts are the essential components of the fuselage structure of an aircraft and perform the following function .a) FUSELAGE SKINThe semi-monocoque architecture stipulates that the body structure is composed of a skin which conceals the main skeleton of the vehicle body. The peculiarity of such a design is that all loads acting on the fuselage are transferred to the frame of the structure through the skin. On the other hand, early airplanes were built using truss frames, usually made of wood or steel tubes, which were then draped with fabric, such as linen or cotton. The skin was structurally superfluous because the strength of the structure was provided solely by the cell. The skin was essentially dead weight, as well as providing a smooth, sealed surface. The skin, usually made of aluminum foil, is attached by riveting or gluing with special adhesives. Most light metal aircraft are built using this process. Monocoques as well as semi-monocoques are called “stressed skin” structures. This is due to the fact that a significant part of the external load (i.e. that of the wings, tail and engine) is carried by the skin of the fuselage. Additionally, any ki...... middle of paper ......e projection.Usually, a 3D model is constructed using 2D sketches, while the 2D sketch of a model can be obtained using the 2D sketch. drawing tool. FIRST ANGLE PROJECTION The object is imagined placed in the first quadrant of the axis system. It is located between the observer and the projection plane. The projection plane is considered a non-transparent plane. When views are drawn in their relative position, the right side view is drawn on the left side of the elevation and the top view is below the front view. THIRD ANGLE PROJECTION The object is imagined to be placed in the third quadrant of the axis system. The projection plane is located between the observer and the object. The projection plane is assumed to be transparent. When views are drawn in their relative position, the right side view is drawn on the right side of the elevation and the top view comes above the front view..