Effect of phase angle on multibladed rotor flutter

V. R. Murthy, G. A. Pierce

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A theoretical technique for predicting the flutter characteristics of a helicopter rotor is presented. The effect of phase angle on flutter speed of a two-bladed rotor in hovering and axial flight is determined. For this purpose, a uniform and untwisted rotor blade with coupled flapwise bending and torsional degrees of freedom is considered. The transmission matrix method is used to obtain the natural vibration characteristics of the system. An unsteady aerodynamic theory is used to obtain the aerodynamic loading in compressible flow.

Original languageEnglish (US)
Pages (from-to)221-234
Number of pages14
JournalJournal of Sound and Vibration
Issue number2
StatePublished - Sep 22 1976
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering


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