Experimental Analysis of Variable Collective-pitch Rotor Systems for Multirotor Helicopter Applications

Robert Porter, Bijan Shirinzadeh, Man Ho Choi

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)


This paper presents an experimental study of variable collective-pitch rotor systems for multirotor helicopter applications. An experimental research facility has been established to conduct this research. The facility enables the high-resolution measurement of forces and torques produced by rotor systems. The power consumption of the rotor system during experimentation can also be recorded. The experimental research facility also allows for the characterisation of the effect of rotor systems on multirotor helicopter performance. It is shown that the variable collective-pitch rotors have a significant performance advantage over fixed-pitch rotors when comparing thrust response, and multirotor helicopter step input response performance. Further, it is observed that variable collective-pitch rotors are more efficient in terms of energy consumption than comparable fixed-pitch rotors under similar operating conditions.

Original languageEnglish
Pages (from-to)271-288
Number of pages18
JournalJournal of Intelligent and Robotic Systems: Theory and Applications
Issue number2
Publication statusPublished - 1 Aug 2016


  • Experimental analysis
  • Multirotor helicopter
  • Unmanned aerial vehicle
  • Variable collective-pitch rotor

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