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Aerodynamic and Aeroacoustic Analysis of Installed Pusher-Propeller Aircraft Configurations

Yin, Jianping and Stuermer, Arne and Aversano, Marco (2012) Aerodynamic and Aeroacoustic Analysis of Installed Pusher-Propeller Aircraft Configurations. Journal of Aircraft, Vol. 49 (No. 5), pp. 1423-1433. The American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.C031704. ISSN 0021-8669.

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Abstract

In this paper, the aeroacoustic phenomena characteristic of a pusher-propeller configuration and their aerodynamic causes are discussed and analyzed. The work was done in the framework of the European-funded project CESAR(for ‘cost effective small aircraft’). The configuration under study is based on an industrially relevant business aircraft design with a wing-mounted pusher propeller, which features a close coupling of the turboshaft engine exhaust nozzles and a five bladed propeller. An established numerical analysis approach is applied in this study, which couples a high-fidelity unsteady aerodynamic simulation using theDLRunstructured finite volume flow solver (TAU) code with the DLR Ffowcs-Williams–Hawkings code APSIM for a subsequent aeroacoustic evaluation. A detailed analysis of the contributions of various components of the installation as well as flight-condition specific parameters toward the overall noise generation by the propeller is presented, which highlights the dominant role the engine-jet impingement on the propeller plays for the aeroacoustic characteristics of this type of aircraft configuration. A detailed analysis of specific aspects of the input surface used for the aeroacoustic analysis is made through a comparison between the results achieved using both impermeable and permeable Ffowcs-Williams–Hawkings formulations. The numerical error due to both jet exhaust and propeller wake impingement on the Ffowcs-Williams–Hawkings permeable surface as well as the impact of cutting a hole in this permeable surface to avoid possible issues of these effects are discussed.

Document Type:Article
Title:Aerodynamic and Aeroacoustic Analysis of Installed Pusher-Propeller Aircraft Configurations
Authors:
AuthorsInstitution or Email of Authors
Yin, Jianpingjianping.yin@dlr.de
Stuermer, Arnearne.stuermer@dlr.de
Aversano, Marcomaversano@piaggioaero.it
Date:September 2012
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:Vol. 49
DOI:10.2514/1.C031704
Page Range:pp. 1423-1433
Publisher:The American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:Published
Keywords:aeroacoustic phenomena, pusher-propeller, Propeller, Installation Effects, Engine-Airframe Installation, Unsteady Aerodyanmics, CFD, CAA, Noise, Aeroacoustics
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 Quiet and Comfortable Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Dr.-Ing. Jianping Yin
Deposited On:02 Nov 2012 14:44
Last Modified:26 Mar 2013 13:42

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