Stuermer, 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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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.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||The Case for Counter-Rotation of Installed Contra-Rotating Open Rotor Propulsion Systems|
|Date:||25 June 2012|
|In ISI Web of Science:||No|
|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|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Flight Physics|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Transport Aircraft|
Institute of Aerodynamics and Flow Technology > Helicopters
|Deposited By:||Arne Stürmer|
|Deposited On:||15 Nov 2012 11:39|
|Last Modified:||15 Nov 2012 11:39|
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