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Noise radiation from installed pusher propeller using coupling of Unsteady Panel Method, Actuator disk and FW-H methodology

Yin, Jianping and Stuermer, Arne (2010) Noise radiation from installed pusher propeller using coupling of Unsteady Panel Method, Actuator disk and FW-H methodology. 16th AIAA/CEAS Aeroacoustics Conference 2010, 07.-09. Juni 2010, Stockholm, Schweden.

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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 frame of the European-funded project CESAR (Cost Effective Small AiRcraft). The configuration under study is an industrially relevant design with a wing-mounted pusher propeller, which features a close coupling of the turboshaft engines exhaust nozzles and a five bladed propeller. The coupling of an Actuator Disc (TAU AD) model and unsteady free wake panel method (UPM) is employed for the computation of the propeller unsteady aerodynamic force in "pusher" installations. The Ffowcs-Williams/Hawkings (FW-H) equations based code APSIM is used to compute the sound propagation into the far field. A detailed comparison of the current fast coupling method with high-fidelity uRANS (TAU) simulation results will be presented and the differences between the two approaches are discussed. Furthermore, the possible noise reduction through a redesigned engine exhaust nozzle is discussed.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Noise radiation from installed pusher propeller using coupling of Unsteady Panel Method, Actuator disk and FW-H methodology
Authors:
AuthorsInstitution or Email of Authors
Yin, Jianpingjianping.yin@dlr.de
Stuermer, Arnearne.stuermer@dlr.de
Date:2010
Status:Published
Keywords:Noise radiation, installation effect, pusher propeller, unsteady panel method (UPM), Actuator disk (TAU), FW-H
Event Title:16th AIAA/CEAS Aeroacoustics Conference 2010
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:07.-09. Juni 2010
Organizer:AIAA/CEAS
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:no assignment
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Dr.-Ing. Jianping Yin
Deposited On:06 Jul 2010 08:46
Last Modified:06 Jul 2010 08:46

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