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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/ | ||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||
| Title: | Computational Investigation of Advanced Hub Fairing Configurations to Reduce Helicopter Drag | ||||||
| Authors: |
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| 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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