This article considers a method to address the problem of two aircrafts encountering one another during the planned descent of the higher-flying aircraft. The author considers conflict detection, reaction, and strategical resolution of conflict (conflict avoidance maneuvering), noting that these components must all be completed in a relatively short period of time. The author discusses how the traditional ground-based control systems have to be enhanced by the autonomous anti-collision and anti-conflict airborne systems. Avoidance procedures with descent behind the intruder are discussed. The author recommends procedures for this situation, based on an in-flight conflict resolution model modified from classical works about conflict detection and resolution. Two avoidance procedures are described: avoidance procedure with direct descent behind the intruder from delayed TOD (top of descent); and avoidance procedure with descent behind the intruder from planned TOD with a safely altered angle of descent. The author concludes that avoidance procedures with descent behind the intruder are feasible if and only if initial vertical displacement between aircraft in a conflict encounter exceeds the vertical separation minimum.

  • Availability:
  • Corporate Authors:

    University of Zagreb

    Faculty of Transport and Traffic Sciences
    10000 Zagreb,   Croatia 
  • Authors:
    • Magister, T
  • Publication Date: 2004


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 77-82
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00989043
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 2 2005 12:00AM