Lateral collision dynamics of CSPRs paired approach under influence of wake vortex field

doi:10.16265/j.cnki.issn1003-3033.2020.04.004

Abstract

Abstract: In order to study lateral collision risk of CSPRS paired approach, firstly, considering traditional approach motion process, an interval model of paired approaching aircrafts was established to determine theoretical interval between them at any time. Secondly, characteristics of aircrafts' wake vortex field were analyzed to establish a strength calculation model and dissipation model for leading aircraft's wake flow. Rear aircraft's response mechanism after encountering wake flow was also studied, and a torque balance model of it in wake vortex field of leading aircraft was developed to determine safety spacing between them. Then, lateral positioning error of aircrafts was analyzed to obtain probability distribution of actual interval between paired aircrafts, and a risk calculation model was established, which was applied to analyze changes of lateral collision risk between leading and rear aircrafts during paired approach. The results show that lateral collision risk increases with the increase of initial interval and positive side wind, and then decreases with the increase of aileron's deflection angle. It rises to the maximum value when paired aircrafts reach the head of runway.

Key words: wake vortex field, closely spaced parallel runways (CSPRs), paired approach, collision risk, safety spacing, position error

CLC Number:

X913

LU Fei, TENG Jingjie, WU Jun, ZHANG Zhaoning, ZHANG Zonglu. Lateral collision dynamics of CSPRs paired approach under influence of wake vortex field[J]. China Safety Science Journal, 2020, 30(4): 21-27.

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