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DLR ANALYSIS ON THE NOISE EMISSION FROM THE RACER CONFIGURATION

Yin, Jianping and Schwarz, Thorsten and Wentrup, Marc and Guntzer, Frederic (2019) DLR ANALYSIS ON THE NOISE EMISSION FROM THE RACER CONFIGURATION. 45th European Rotorcraft Forum (ERF) 2019, 17-20. Sept. 2019, Warschau, Polen.

Full text not available from this repository.

Abstract

To answer the challenge of increasing range and speed of a rotorcraft, RACER (Rapid And Cost-Effective Rotorcraft) is developed by Airbus Helicopters. The RACER configuration incorporates an innovative 'box-wing' design to provide lift and 'pusher' propellers at the wing tips to generate thrust in forward flight. The noise sources from RACER do not only include conventional helicopter main rotor noise, but also propeller noise which can be significantly affected by interferences with the main rotor, wings and other parts of the configuration. Having been widely applied to the simulations of rotor and propellers, the DLR free wake code UPM and the aeroacoustic analysis tool APSIM are used for a detailed analysis and an improved understanding of the complex aerodynamics and aeroacoustics of the RACER configuration. The noise generation mechanisms of the various interactions among the propeller, the wings and the rotor as well as a variation in the sense of rotation of the propeller are numerically studied to allow finding mitigation means to reduce the interactions in the final RACER configuration. The noise from rotor and propeller emitted by the complete RACER configuration for various flight conditions is analyzed and the analysis of acoustic scattering of propeller noise by the RACER configuration is conducted.

Item URL in elib:https://elib.dlr.de/129484/
Document Type:Conference or Workshop Item (Speech)
Title:DLR ANALYSIS ON THE NOISE EMISSION FROM THE RACER CONFIGURATION
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Yin, JianpingJianping.Yin (at) dlr.deUNSPECIFIED
Schwarz, ThorstenThorsten.Schwarz (at) dlr.dehttps://orcid.org/0000-0003-1034-6120
Wentrup, MarcMarc.Wentrup (at) dlr.deUNSPECIFIED
Guntzer, FredericFrederic.Guntzer (at) airbus.comUNSPECIFIED
Date:17 September 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:rotorcraft, RACER, rotor, Propeller, wings, interactions, free wake, aerodynamics, aeroacoustic, Fuselage Scattering
Event Title:45th European Rotorcraft Forum (ERF) 2019
Event Location:Warschau, Polen
Event Type:international Conference
Event Dates:17-20. Sept. 2019
Organizer:Warsaw University of Technology
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 und Comfortable Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Deposited By: Yin, Dr.-Ing. Jianping
Deposited On:29 Oct 2019 13:42
Last Modified:25 Nov 2019 08:32

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