空港における航空機の地上運航状況分析

抄録

Reduction of separation for arrival or departure aircraft is effective for increasing an airport traffic capacity. This paper describes the investigation on a possibility of separation reduction, under the current Air Traffic Control in an airport. For this purpose, field observation was made at New Tokyo International Airport for 5 days.

The results of the investigation are listed below:

1. At the runway exit for a southern wind, almost half of arrival aircraft decreased its speed below the average speed on the taxiway. This was due to the curved structure of the high speed taxiway.

2. On the runway for a southern wind, it takes 85 seconds on average for the arrival aircraft on the final to fly 3 nm the runway threshold. On the other hand, the average runway occupancy time is 80 seconds. So disregarding about wake turbulence, it is considered that 3 nm can be a minimum separation in the present airport environment.

3. Using the frequency distribution of landing interval, the capacity of the runway for a southern wind calculated. The capacity calculated is 17 arrivals per hour. The number in field observation is 16 per hour.

4. The model fitting using a general Erlang distribution function was made for landing intervals. The data generally agreed with the distribution function.

5. In the present airport environment, it seems no problem to reduce current 2 minutes' interval for departure aircraft to 80 seconds, if the present wake turbulence application can be changed by considering the wind vicinity of a runway.

6. Use of Anticipating separation is recommended to increase the runway capacity.