tailieunhanh - Air Traffic Control Part 7

Tham khảo tài liệu 'air traffic control part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | The potential of some of the innovative operational procedures for increasing the airport landing capacity 83 Fig. 7. Simplified layout of the runway system at San Francisco International Airport SFO Compiled from Janic 2008a Currently the airport operates two pairs of the closely-spaced parallel runways - 1L R and 28R L. Dimensions of runways 1L 28R are 11879x200ft 3618x61m . Dimensions of the runways 1R 28L are 10602x200ft 3231x61m . Each pair of runways is spaced for 750 ft . which is sufficient for simultaneous arrivals and departures under VMC but not under IMC FAA 2006 . Under preferable VMC the runways 28R L are used for paired arrivals and the runways 1L R for paired departures as shown in Figure 7. In dependence on the mixture of arrivals and departures the paired departures can be realized between the successive pairs of arrivals. When the weather deteriorates due the specified minima in Figure 1 each pair of runways is used as the single runway for both arrivals and departures West Plan for Runways 28R L and Southeast Plan for Runways 1L R . Such bad weather prevails on average for about 20 of time during the year Cotton et al. 20011 . In addition to geometry of runways the additional inputs for the model are as follows The arrivals are realized on the runways 28R L or 1L R with the length of final approach path . the distance between FAG and landing threshold s Eu1 and EH2 and the runway thresholds TL1 and TH2 of ỵH 1 Ỵi_ 2 12 nm see Figure 5 . If the standard GS angle 01 30 is used the aircraft altitude at the gate E1 2 will be 4000 ft if the steeper GS angle 0H is used this altitude will be about 7000 ft. The difference is greater than the ATC minimum vertical separation rules 1000ft thus enabling safe pairing of aircraft of particular wake vortex speed combinations approximately above each other at the entry gates El 1 and Eh 2 respectively FAA 2006 . The aircraft fleet in terms of the weight and wake vortex categories is as .