Two-parameter bifurcation analysis of longitudinal flight dynamics

Der-Cherng Liaw*, Chau Chung Song, Yew-Wen Liang, Wen Ching Chung

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

12 Scopus citations


The bifurcation analysis of longitudinal flight dynamics is presented, emphasizing the influence of elevator deflection and aircraft mass. Based on a mathematical model proposed by Garrard and Jordan (1977), a rich variety of bifurcation phenomena such as saddle-node bifurcation, Hopf bifurcation, and cycle fold bifurcations are observed in the numerical simulations of longitudinal flight dynamics of the F-8 aircraft. The occurrence of saddle-node bifurcation and Hopf bifurcation may result in jump behavior and pitch oscillations of flight dynamics. The analysis leads to a division of the longitudinal flight space into several maneuvering regions, and may provide more understanding of the longitudinal flight dynamics.

Original languageEnglish
Pages (from-to)1103-1112
Number of pages10
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number3
StatePublished - 1 Jul 2003


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