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Computational Investigation of Advanced Hub Fairing Configurations to Reduce Helicopter Drag

Khier, Walid (2014) Computational Investigation of Advanced Hub Fairing Configurations to Reduce Helicopter Drag. 40th European Rotorcraft Forum, 02.-04.Sep.2014, Southampton, UK.

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Abstract

The paper reports investigation of the aerodynamic performance of different hub fairing shapes and compares them to the baseline hub. The investigation relies on stationary RANS simulation of air flow past the GRC common platform fuselage and a generic main rotor hub in cruise flight at Mach number equal to 0.204, and -2.5o pitch angle. Modular grids were generated around two fuselage configurations and three main rotor hub shapes. Four different combinations of fuselage and rotor hub grids were generated using Chimera overlapping grid technique. The DLR unstructured RANS solver TAU was applied to predict the aerodynamic loads acting on the different computational configurations. The results revealed significant contribution of blade attachments and stubs to hub drag. An overall drag reduction of 17-19% could be obtained by proper optimization of the fairing, blade attachments and stubs.

Item URL in elib:https://elib.dlr.de/91372/
Document Type:Conference or Workshop Item (Speech)
Title:Computational Investigation of Advanced Hub Fairing Configurations to Reduce Helicopter Drag
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Khier, Walidwalid.khier (at) dlr.deUNSPECIFIED
Date:2 September 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Rotor Hub Drag. Helicopter Aerodynamics. Computational Fluid Mechanics
Event Title:40th European Rotorcraft Forum
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:02.-04.Sep.2014
Organizer:Royal Aeronautical Socity
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
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Khier, Dr.-Ing. Walid
Deposited On:12 Nov 2014 08:33
Last Modified:31 Jul 2019 19:48

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