Stability Analysis of a Helicopter with an External Slung Load System

Kary Thanapalan*

*Corresponding author for this work

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This paper describes the stability analysis of a helicopter with an underslung external load system. The Lyapunov second method is considered for the stability analysis. The system is considered as a cascade connection of uncertain nonlinear system. The stability analysis is conducted to ensure the stabilisation of the helicopter system and the positioning of the underslung load at hover condition. Stability analysis and numerical results proved that if desired condition for the stability is met, then it is possible to locate the load at the specified position or its neighbourhood.

Original languageEnglish
Article number4195491
JournalJournal of Control Science and Engineering
Publication statusPublished - 2016


  • Helicopter
  • underlsung external load system
  • stability analysis


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