Assessment of ice accretion effects on rotor dynamics via multi-body and CFD approaches

Daniel Kelly, Habibollah Fouladi, Marco Fossati, Wagdi G. Habashi, Roberto Alicino, Giuseppe Quaranta, Pierangelo Masarati

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)


A numerical approach is outlined to determine the degraded performance and changes in flight characteristics of a helicopter rotor due to icing. The methodology loosely couples a multibody dynamics code and a Computational Fluid Dynamics-based ice accretion code in an effort to reach a compromise between computational resources and model accuracy. Ice accretion is calculated at several radial sections in a quasi-3D analysis. The dynamics code then determines the degraded flight conditions of the helicopter. Ice shedding from the rotor is addressed through a simplified model which predicts shedding through a computation of cohesion and adhesion stresses due to centrifugal loading. The technique has been applied to a helicopter rotor blade in hover flight, demonstrating an increase in torque and a significant loss in the figure of merit.

Original languageEnglish
Title of host publicationAnnual Forum Proceedings - AHS International
PublisherAmerican Helicopter Society
Number of pages12
ISBN (Print)9781632666918
Publication statusPublished - 2014
Externally publishedYes
Event70th American Helicopter Society International Annual Forum 2014 - Montreal, QC, Canada
Duration: 20 May 201422 May 2014


Conference70th American Helicopter Society International Annual Forum 2014
CityMontreal, QC


  • codes
  • symbols
  • computational fluid dynamics

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