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Trimmed CFD Simulation of a Complete Helicopter Configuration

Khier, Walid and Dietz, Markus and Schwarz, Thorsten and Wagner, Siegfried (2007) Trimmed CFD Simulation of a Complete Helicopter Configuration. 33rd European Rotorcraft Forum, 2007-09-13, Kazan, Russia.

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An investigation was carried out using the flight mechanics tool HOST weakly coupled to the RANS solver FLOWer to simulate the flow around helicopter configuration under different flight conditions. The configuration considered was a wind tunnel model with powered 4.2 meter four-bladed main rotor, and 0.73 meter two bladed tail rotor. Two forward flight conditions at Mach number equal to 0.059 and 0.204 were considered at 5o and -2o angle of attack, respectively. The objective was to asses the aerodynamic interference between helicopter components by comparing the main rotor and fuselage loads with their counterparts obtained from isolated fuselage and isolated rotor simulation. The study revealed noticeable changes in the load distribution on the main rotor between the isolated rotor and full helicopter cases, but only negligible differences in power consumption resulted. Major changes in the fuselage loads and surface pressure were also found.

Item URL in elib:https://elib.dlr.de/53599/
Document Type:Conference or Workshop Item (Speech)
Title:Trimmed CFD Simulation of a Complete Helicopter Configuration
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Khier, Walidwalid.khier (at) dlr.deUNSPECIFIED
Dietz, MarkusInstitut für Aerodynamik und Gasdynamik Universität StuttgartUNSPECIFIED
Schwarz, Thorstenthorsten.schwarz (at) dlr.deUNSPECIFIED
Wagner, SiegfriedInstitut für Aerodynamik und Gasdynamik Universität StuttgartUNSPECIFIED
Date:13 September 2007
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Weak coupling, elastic blades, pitch up, tail shake, aerodynamic interference, helicopter aerodynamics.
Event Title:33rd European Rotorcraft Forum
Event Location:Kazan, Russia
Event Type:international Conference
Event Dates:2007-09-13
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 Robust Rotorcraft (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Khier, Dr.-Ing. Walid
Deposited On:17 Mar 2009
Last Modified:31 Jul 2019 19:21

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