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Emergency trajectory generation based on feasible trim state sequences

  • Yunhong Xu*
  • , Rui Zhou
  • , Jiang Wu
  • *Corresponding author for this work
  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

A number of aircraft accidents are associated with control surfaces failure. In this paper, A two-step trajectory generation algorithm (TGA) is proposed to obtain safe emergency plans on line for ailerons jam situations: a search algorithm based on a modified genetic algorithm (GA) finds a segmented trajectory to an intermediate point' and an end-procedure adjusts the aircraft position, heading and attitude that are suitable for a safe landing and generates trajectory sequence to reach the landing site. Emergency plan is based on a trim database, so a trim state generation and stability evaluation method based on extended continuation and bifurcation algorithm (EBA) for a degraded flight dynamics is stated. The proposed architecture is general for any control surface jam situation. An F-16 aileron jam scenario is presented to illustrate the utility of the proposed algorithm for during damaged flight planning and guidance.

Original languageEnglish
Pages (from-to)259-266
Number of pages8
JournalJournal of Aeronautics, Astronautics and Aviation
Volume45
Issue number4
DOIs
StatePublished - Dec 2013

Keywords

  • Ailerons jam
  • Extended bifurcation algorithm
  • Modified genetic algorithm
  • Trajectory generation

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