Abstract
The present study proposes an economic indicator to support the evaluation of aircraft End of Life (EoL) strategies in view of the increasing demand with regards to aircraft decommissioning. This indicator can be used to evaluate an economic performance and to facilitate the trade-off studies among different strategies. First, Disposal and Recycle (D&R) scenarios related to stakeholders are investigated to identify the core concepts for the economic evaluation. Next, we extracted the aircraft D&R process from various real-life practices. In order to obtain the economic measure for the engineering process, a method of estimating the D&R cost and values are developed by integrating product, process and cost properties. This analysis is demonstrated on an averaged data set and two EoL aircraft cases. In addition, sensitivity analysis is performed to evaluate the impact of the D&R cost, residual value, and salvage value. Results show that the disassembly and dismantling of an aircraft engine possesses relatively more economic gains than that for the aircraft. The main factors influencing the proposed D&R economic indicator are the salvage value and D&R cost for economically efficient D&R cases. In addition, delaying the disposal and recycle process for EoL aircraft can lead to economically unfavorable solutions. The economic indicator combined with the evaluation methods is widely applicable for evaluations of engineering products EoL solutions, and implies a significant contribution of this research to decision making for such complex systems in terms sustainable policy.
Highlights
Within the current commercial aviation industry, more than 8500 aircraft have been retired, and it is expected that around 6600 aircraft will reach their End of Life (EoL) in the decade [1,2].This has led to the required development of economic efficient aircraft Disposal and Recycle (D&R)strategies
By reviewing the cost and value distribution of the three scenarios, we identify that the D&R cost, residual value, and salvage value are key to the economic analysis
The present study proposed an economic indicator for the D&R process to measure the overall
Summary
Within the current commercial aviation industry, more than 8500 aircraft have been retired, and it is expected that around 6600 aircraft will reach their End of Life (EoL) in the decade [1,2] This has led to the required development of economic efficient aircraft Disposal and Recycle (D&R). EoL related to the original design via the material choice and component recyclability and solution is associated the EoL aircraft statusisbased on itswith operating and maintenance before recoverability [7]. A deep understanding the aircraft product solutions, and at the same time will, in practice, strengthen its life cycle performance. It is very necessary to provide a standard in order to evaluate the performance of an EoL of solution; there is a need economic indicator indicator for this purpose. Based on historical aircraft EoL projects, the scenarios and itsand process model are constructed
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