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Stürmer, Arne and Yin, Jianping (2012) The Case for Counter-Rotation of Installed Contra-Rotating Open Rotor Propulsion Systems. 30th AIAA Applied Aerodynamics Conference, 25-28 June 2012, New Orleans, LA, USA.
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Abstract
Contra Rotating Open Rotor (CROR) propulsion systems have seen renewed interest as a possible economic and environmentally friendly powerplant for future transport aircraft. Installation effects, i.e. the mutual interactions between airframe components and the rotors, have a pronounced impact on the aerodynamic and aeroacoustic performance for this type of engine. In this paper, the impact on aerodynamic performance and noise emissions caused by the presence of a pylon as well as a variation in the sense of rotation of the rotors is numerically studied for a representative 10x8-bladed pusher-configuration CROR engine at typical take-off conditions. In particular, the sense of rotation influence on blade and rotor performance and loadings as well as on the handling quality relevant in-plane rotor forces is analyzed, as is the resulting impact on the noise emissions in the near- and farfield and the flyover noise results. Having been widely applied to the simulations of single as well as contra-rotation propellers, the DLR CFD code TAU and the aeroacoustic analysis tool APSIM allow for a detailed analysis and an improved understanding of the complex aerodynamics and aeroacoustics of this type of propulsion system.
| Item URL in elib: | https://elib.dlr.de/78045/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||
| Title: | The Case for Counter-Rotation of Installed Contra-Rotating Open Rotor Propulsion Systems | |||||||||
| Authors: |
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| Date: | 25 June 2012 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | Contra-Rotating Open Rotor, CROR, uRANS, CFD, CAA, Interaction tones | |||||||||
| Event Title: | 30th AIAA Applied Aerodynamics Conference | |||||||||
| Event Location: | New Orleans, LA, USA | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 25-28 June 2012 | |||||||||
| Organizer: | AIAA | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | Aircraft Research (old) | |||||||||
| DLR - Research area: | Aeronautics | |||||||||
| DLR - Program: | L AR - Aircraft Research | |||||||||
| DLR - Research theme (Project): | L - Flight Physics (old) | |||||||||
| Location: | Braunschweig | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Transport Aircraft Institute of Aerodynamics and Flow Technology > Helicopters | |||||||||
| Deposited By: | Stürmer, Arne | |||||||||
| Deposited On: | 15 Nov 2012 11:39 | |||||||||
| Last Modified: | 26 Mar 2015 13:48 |
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