This study asserts that paired aircraft can withstand specific wake turbulence levels and explores the longitudinal collision risk in closely spaced parallel runway approaches. The goal is to enhance the safety margin of the paired approach and allow for more flexible implementation. Based on QAR data, a theoretical spacing model for paired aircraft and a probability distribution of acceleration error are established to facilitate the analysis of the actual spacing of paired aircraft. Wake turbulence attenuation is modelled using large eddy simulation, creating a vortex attenuation model. Drawing inspiration from the Hallock-Burnham vortex model, new models for induced velocity and vortex core motion are proposed. The study assumes that trailing aircraft can handle certain wake intensities, leading to a new model for calculating wake turbulence safety intervals, limiting the trailing aircraft’s maximum roll angle to its critical limit. Using probability theory, a model for longitudinal collision risk is formulated, combining wake turbulence safety separation and the actual separation of paired aircraft. The study also examines various factors influencing longitudinal collision risk, emphasising the significant impact of crosswind conditions. It concludes that a stronger crosswind component reduces the wake turbulence safety separation, thereby increasing the risk of longitudinal collisions, particularly during the final stage of the approach. Notably, collision risk is directly proportional to the crosswind component and initial longitudinal separation, but inversely proportional to runway spacing.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Study on Longitudinal Collision Risk of Closely Spaced Parallel Runways Paired Approach


    Beteiligte:
    Fei LU (Autor:in) / Jian ZHANG (Autor:in) / Erli ZHAO (Autor:in) / Jingjie TENG (Autor:in)


    Erscheinungsdatum :

    2025




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Paired approach procedures for closely spaced parallel runways

    Eftekari, R. R. / Hammer, J. B. / Havens, D. A. et al. | IEEE | 2011

    Freier Zugriff

    Risk Assessment on Vertical Collision of Paired-Approach to Closely Spaced Parallel Runways

    Lu, Fei / Zhang, Jing / Wu, Jun et al. | Springer Verlag | 2019


    Longitudinal Collision Risk Assessment of Paired Departure to Closed Spaced Parallel Runways

    Zhang, Zhao Ning ;Qiao, Hui ;Lu, Ting Ting | Trans Tech Publications | 2014


    Feasibility analyses for paired approach procedures for closely spaced parallel runways

    Eftekari, R. R. / Hammer, J. B. / Havens, D. A. et al. | IEEE | 2011