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PT Dirgantara Indonesia is the first and only aircraft industry in Indonesia. The company is engaged in the manufacture of aircraft structure, assembly and manufacture for military and civilian needs. One of the company's main product is the CN 235 aircraft because it is the plane with the high...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/24553 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | PT Dirgantara Indonesia is the first and only aircraft industry in Indonesia. The company is engaged in the manufacture of aircraft structure, assembly and manufacture for military and civilian needs. One of the company's main product is the CN 235 aircraft because it is the plane with the highest number of demand than other products. In the production process, PT Dirgantara is often unable to deliver products on time. Delayed delivery is influenced by the delay of the completion process on component assembly. This section is a critical part in the completion of the manufacture of aircraft because it has the most process and the longest settlement time especially on fuselage making. <br />
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The time required to complete the work on the component assembly is equal to the completion time of work on the fuselage. Currently, the company is able to complete fuselage manufacture in 433 hours, while in order to meet demand, the company must be able to complete the work of making fuselage in 360 hours. The delay in this part is triggered by the lack of division of work elements in each operator which will also affect the inequality of the load to the workers. The inequality of the load on the worker will cause an unfluence on the assembly line and the delay in demand’s fulfillment. <br />
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The model that used in this research is a mathematical model, developed from the reference model by Bricker and Juang (1997). This model will result in allocation of work elements on each station that at once to the operator. Development on this model is done on the objective function, where the objective of the reference model is the minimization of the number of stations and the desired objective function is the longest station time minimization. <br />
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The development of the model will produce a solution on every jig of fuselage component making that is MLG LH fairing, fairing MLG RH, rear fuselage, fuselage integration, nose structure, rear cone and center fuselage. The resulting solution gives the proposed settlement time smaller than the actual condition of 433 hours to 104 hours and the decline of the smoothness index value from 492.2 to 21.116. Decreasing the smoothness index will be an indicator of increased fluidity across the assembly line of proposals compared to actual assembly lines. It can be seen from the efficiency of the line that increased from 61.39% to 93.84%. Solutions obtained from the development of mathematical models will provide better results than the actual system at this time. <br />
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