Abstract
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 language | English |
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Title of host publication | Annual Forum Proceedings - AHS International |
Publisher | American Helicopter Society |
Pages | 1840-1851 |
Number of pages | 12 |
Volume | 3 |
ISBN (Print) | 9781632666918 |
Publication status | Published - 2014 |
Externally published | Yes |
Event | 70th American Helicopter Society International Annual Forum 2014 - Montreal, QC, Canada Duration: 20 May 2014 → 22 May 2014 |
Conference
Conference | 70th American Helicopter Society International Annual Forum 2014 |
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Country/Territory | Canada |
City | Montreal, QC |
Period | 20/05/14 → 22/05/14 |
Keywords
- codes
- symbols
- computational fluid dynamics