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Helicopter rotor BVI airloads computation using advanced prescribed wake modeling

van der Wall, Berend G. (2011) Helicopter rotor BVI airloads computation using advanced prescribed wake modeling. 29th AIAA Applied Aerodynamics Conference, 27.-30. Juni 2011, Honolulu, Hawaii, USA.

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Abstract

The miss-distance between helicopter rotor blades and their tip vortices is a key parameter for the correct prediction of blade-vortex interaction noise. Either free-wake codes (vortex lattice methods) or computational fluid dynamics codes are usually applied to compute the wake geometry and the blade-wake interactions. Prescribed wake codes are rather fast in computation, since the wake-vortex interactions are ignored therein, but they are considered not to be accurate enough due to the prescription of the geometry based on a few general parameters. They lack the effect of rotor harmonic loading and the effect of the fuselage on the wake geometry. This paper provides an approximate solution for both problems as independent extensions to classical prescribed wake codes to a first order of accuracy.

Item URL in elib:https://elib.dlr.de/69505/
Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Paper AIAA-2011-3367
Title:Helicopter rotor BVI airloads computation using advanced prescribed wake modeling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
van der Wall, Berend G.FT-HSUNSPECIFIED
Date:27 June 2011
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-21
Status:Published
Keywords:helicopter rotor, rotor wake, prescribed wake, wake distortion
Event Title:29th AIAA Applied Aerodynamics Conference
Event Location:Honolulu, Hawaii, USA
Event Type:international Conference
Event Dates:27.-30. Juni 2011
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Innovative Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:28 Jul 2011 13:29
Last Modified:28 Jul 2011 13:29

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