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Boundary Layer Transition Characteristics of a Full-Scale Helicopter Rotor in Hover

Richter, Kai and Schülein, Erich and Ewers, Benjamin and Raddatz, Jochen and Klein, Alexander (2016) Boundary Layer Transition Characteristics of a Full-Scale Helicopter Rotor in Hover. 72nd Annual Forum of the American Helicopter Society, 17.-19. May 2016, West Palm Beach, Florida, USA.

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Official URL: https://vtol.org/annual-forum/forum-72


The final paper will discuss the transition characteristics on both sides of the full scale helicopter rotor for several hover conditions in detail. The transition locations will be quantified and valuable validation data will be provided for the transition prediction on helicopter rotors. By a omparison of the test cases at 100% and 80% RPM, the effect of the Reynolds number on the transition characteristics will be described. In addition, the prediction quality of a state-of-the-art CFD transition prediction tool will be assessed for the hovering rotor by the comparison with the experimental data. A discussion of the numerical results obtained for rigid and for elastic blades will, furthermore, allow extracting the effect of the elastic blade deformation on the transition characteristics.

Item URL in elib:https://elib.dlr.de/98675/
Document Type:Conference or Workshop Item (Speech)
Title:Boundary Layer Transition Characteristics of a Full-Scale Helicopter Rotor in Hover
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Richter, Kaikai.richter (at) dlr.deUNSPECIFIED
Schülein, Ericherich.schuelein (at) dlr.deUNSPECIFIED
Ewers, Benjaminbenjamin.ewers (at) dlr.deUNSPECIFIED
Raddatz, Jochenjochen.raddatz (at) dlr.deUNSPECIFIED
Klein, AlexanderAirbus Helicopters Deutschland GmbHUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:Conference Proceedings
Keywords:Rotor blade, transition, hover
Event Title:72nd Annual Forum of the American Helicopter Society
Event Location:West Palm Beach, Florida, USA
Event Type:international Conference
Event Dates:17.-19. May 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Bachmann, Barbara
Deposited On:27 Jun 2016 15:10
Last Modified:12 Jan 2017 16:11

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