航空機の経路最適化に関する研究-IV : 最適ルートに平行なルートの経済性評価およびリルーティングの効果について

概要

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In this study, economic evaluation of the aircraft routes parallel to the optimum route was performed by the simulations. It was found that compared with the optimum route between San Francisco and Tokyo, the average fuel increases on the parallel routes passing 30, 50 and 100n.m. away from the optimum route were 0.1, 0.2 and 0.7%, respectively. Thus it can be said the parallel routes with 30 and 50n.m. separation distances have almost the same economic advantage as the optimum route. The effectiveness of rerouting (i.e. change of an aircraft's flight plan based on the updated wind forecast while the aircraft is en route) was also investigated by the simulations for New York-Tokyo route and San Francisco-Tokyo route. By executing the rerouting at the beginning of cruising, the fuel was saved by 0.5% on the average (1.3-2.2% at the maximum) and the flight time was shortened by 0.5-0.8% on the average (2.0-3.4% at the maximum), which verified the effectiveness of rerouting.
1997-09-25