Abstract
This chapter deals with the basic assembly operations, with an emphasis on the preparation of hole and the types of mechanical fasteners used in aircraft structures. Assembly represents a significant portion of the total manufacturing cost. The chapter illustrates various steps involved in assembly operations—framing, skinning, and the completed wing torque box. The number of mechanical fasteners in a typical fighter aircraft might be in the range of 200,000-300,000, while a commercial airliner or transport aircraft can have as many as 1,500,000- 3,000,000 fasteners, depending on aircraft size. A hole has to be drilled for each of these fasteners and then the fastener has to be installed in each hole. There are three types of hole drilling: manual drilling, power feed drilling, and automated drilling. The chapter presents many types of fasteners used in aerospace structural assembly. The most prevalent fasteners—namely, solid rivets, pins with collars, bolts with nuts, and blind fasteners—have been illustrated with examples.
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