25969454
9781423532149
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This thesis analyzes how the operation of helicopters produced and supported by manufacturers in various countries affect Brazilian Navy repairable inventories levels and costs. The research is based on a scenario where the Brazilian Navy operates 68 helicopters, manufactured by contractors in USA, France, England and Italy, and the Brazilian Navy relies on these manufacturers for depot-level maintenance. We develop a simulation model representing the repair process of a group of critical helicopter components and measure the turn-around time (TAT). We also develop a readiness based model to find the optimal inventory level of the selected group of helicopter components to achieve a desired operational availability under these TATs. The results were applied to a spreadsheet model to find the differences in spare levels and associated costs necessary to operate the helicopter fleet. Our research concludes that the helicopter's source has a substantial impact on repairable inventories levels and costs. Furthermore, this impact is large enough to influence decisions in the Brazilian Navy acquisition process of equipment and weapons systems.Naval Postgraduate School Monterey CA is the author of 'Impact of Turn Around Time in Brazilian Navy Inventions', published 2000 under ISBN 9781423532149 and ISBN 1423532147.
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