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Low- Speed Aerodynamics and Aeroacoustics of CROR Propulsion Systems

Stürmer, Arne and Yin, Jianping (2009) Low- Speed Aerodynamics and Aeroacoustics of CROR Propulsion Systems. In: 15th AIAA/CEAS Aeroacoustics Conference. AIAA. 15th AIAA/CEAS Aeroacoustics Conference, 11-13 May 2009, Miami, FL., USA.

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Contra Rotating Open Rotor (CROR) propulsion systems have come back into focus as a possible economic and environmentally friendly powerplant for future transport aircraft. Having been widely applied to the simulations of single rotation propellers, the DLR CFD code TAU and the aeroacoustic analysis tool APSIM have been employed for the analysis of the complex aerodynamics and aeroacoustics of this type of aircraft propulsion system. In order to demonstrate the codes applicability to these types of simulations as well as to develop an understanding of the impact of configuration variations, a generic 8x8 and 10x8 pusher CROR powerplant are studied here at typical sea-level take-o conditions of M=0.2. The results allow for a detailed analysis of the aerodynamic interactions between the two rotors as well as the noise generation mechanisms, allowing for an improved understanding of interaction tone sources. In addition, the impact of the numerical approach to the aeroacoustic simulations on the results is studied with a focus on determining the importance of the quadrupole contributions.

Item URL in elib:https://elib.dlr.de/59194/
Document Type:Conference or Workshop Item (UNSPECIFIED)
Title:Low- Speed Aerodynamics and Aeroacoustics of CROR Propulsion Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:11 May 2009
Journal or Publication Title:15th AIAA/CEAS Aeroacoustics Conference
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Open Rotor, Propfan, Unsteady Aerodynamics, Propeller, CFD, CAA, Quadrupole, Noise
Event Title:15th AIAA/CEAS Aeroacoustics Conference
Event Location:Miami, FL., USA
Event Dates:11-13 May 2009
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Stürmer, Arne
Deposited On:02 Jul 2009 15:21
Last Modified:26 Mar 2015 13:57

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