PACOTSトラック2に関するUPR運用制限緩和の検討
2015 年 2015 巻 132 号 p. 17-31
詳細
2015 年 2015 巻 132 号 p. 17-31
Flexible route systems have been operated in the airspace over Northern Pacific Ocean. PACific Organized Track System (PACOTS) is one of them. User Preferred Routes (UPRs) which is more efficient than PACOTS is the type of free routing and allows flight operators to tailor the route of each flight considering the effect of weather. Currently, PACOTS Track 2 UPR is prohibited in order to ensure the efficient and safe management of an orderly air traffic flow. Meanwhile, the number of aircraft that meet the criteria for applying reduced separation minima has been increasing. Since more opportunities to apply reduced separation minima are becoming available, it is worthwhile to reconsider the possibility of PACOTS Track 2 UPR.
This paper provides the results from computer simulation experiment of PACOTS Track 2 UPR. Whereas traffic concentration was occurred in PACOTS Track 2 entrance gateway, the results show an effectiveness of Track 2 UPRs basically, that may branch southward but are not permitted to re-converge on Track 2. The benefits come from trade off between disadvantage of flight altitude due to traffic concentration and effectiveness of flight time and fuel consumption reduction.
