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Study on Wake Turbulence Separations Optimized for Weather and Airport/air Space Conditions

It is essential to improve runway and airport throughput at congested airports while maintaining safety. Currently, the minimum longitudinal separation for arriving and departing aircraft is defined by each pair of aircraft categories for preceding and following aircraft to avoid wake turbulence encounters. These separation minima are set so that the strengths of wake turbulences generated by the preceding aircraft are less than ones that do not affect safe operations of the following aircraft regardless of weather conditions. However, it is well known that wake turbulences are influenced by the surrounding wind and their decay time depends on atmospheric conditions. Therefore, it is expected to implement an operational concept using separation minima for each pair of preceding and following aircraft types depending on weather conditions. Because operational arrival and departure intervals are also constrained by the runway occupancy time (ROT) and air traffic flow in the airport and airspace near the airport, we conduct the research considering the constraints.

Research Group
(staff)
Takayuki YOSHIHARA Atsushi SENOGUCHIIzumi YAMADA
Daichi TORATANI
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