| Summary: | The winglet can effectively reduce the induced drag, fuel consumption and exhaust emissions, meanwhile, it is eco-friendly and profitable.However, an economic evaluation is necessary before carrying out the winglet modification project, due to its cost.Based on the cost-benefit analysis, an economic evaluation model of Atype aircraft modified the winglet is established.The influences of the average flight distance, daily utilization rate of the aircraft, the payment method and the discount rate on the winglet's ROI(return on investment) are analyzed.Finally, the case analysis will be given, combined with the evaluation of feasibility and finance, which provides a reference for airlines to modify the winglet.
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