Irregular Flight Recovery Under Resource Restriction
To address the prolonged resource restrictions faced by airlines in their aircraft and route networks due to airport closures,this study presents a column generation-based approach for flight recovery.By optimizing the route executed by aircraft,utilizing strategies including flight delays,aircraft swaps and flight cancellations,adjustments are made to the original flight sched-ule,aiming to minimize the number of canceled flights and mitigate losses for the airline.Initially,a path-based model is utilized to construct a multi-type aircraft routing network and a flight recovery model.Subsequently,a heuristic algorithm is employed to gener-ate an initial recovery schedule.Finally,a column generation method is applied to reschedule a large-scale flight disruption for a given airline in the event of an unexpected incident.This research also focuses on investigating the means to reduce the flight can-cellation rate for airlines with multi-type aircrafts.Experimental results demonstrate that compared to manual adjustments,this ap-proach can reduce the flight cancellation rate by 5.4%.Specifically,the number of flight cancellations unrelated to the closed airport decreases by 66.67%,while recovery costs are reduced by 17.4%.Within an acceptable level of delay,this method significantly de-creases flight cancellation rate,delivering considerable value for airlines in maintaining normal operations.