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A Novel Test Bed for the Aeroacoustic Investigation of UCAV Configurations with Highly Integrated Propulsion Systems

Rossignol, Karl-Stephane and Pott-Pollenske, Stephan-Michael and Delfs, Jan Werner and Kolb, Alexander and Zimmermann, Patrick M. (2022) A Novel Test Bed for the Aeroacoustic Investigation of UCAV Configurations with Highly Integrated Propulsion Systems. In: 28th AIAA/CEAS Aeroacoustics Conference, 2022. 28th AIAA/CEAS Aeroacoustics Conference, 14-17 June 2022, Southampton, UK. doi: 10.2514/6.2022-2856. ISBN 978-162410664-4.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2022-2856


In this contribution, a novel test bed designed for the experimental investigation of the acoustic signature of unmanned combat air vehicle with highly integrated propulsion systems is presented. The model integrates a curved intake duct design as well as a curved, high aspect ratio, rectangular nozzle design. Operation of the model in suction mode or pressurized mode allow investigations of the intake and nozzle acoustics independently and in a realistic Mach number range, e.g. Ma=0.4 in the intake duct and Ma=0.75 in the jet. Intake sound emissions are found to have a directivity peaking in the forward arc which is strongly dependent on the suction mass flow rate and almost independent of the free-stream Mach number. The jet is found to radiate sound with a rear arc directivity for model scale frequencies above 3.15 kHz. The acoustic is also a strong function of the nozzle mass flow rate only. The overall shape of the jet acoustic directivity suggests the existence of two source component aligned at 90° and 140° to the upstream direction, respectively.

Item URL in elib:https://elib.dlr.de/189390/
Document Type:Conference or Workshop Item (Speech)
Title:A Novel Test Bed for the Aeroacoustic Investigation of UCAV Configurations with Highly Integrated Propulsion Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Delfs, Jan WernerUNSPECIFIEDhttps://orcid.org/0000-0001-8893-1747UNSPECIFIED
Kolb, AlexanderAirbus Defence and SpaceUNSPECIFIEDUNSPECIFIED
Zimmermann, Patrick M.Airbus Defence and SpaceUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:28th AIAA/CEAS Aeroacoustics Conference, 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Aeroacoustics, UCAV, Acoustic signature, wind tunnel experiments, unmanned vehicle
Event Title:28th AIAA/CEAS Aeroacoustics Conference
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:14-17 June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Technical Infrastructure > Systemhaus Technik
Deposited By: Rossignol, Karl-Stephane
Deposited On:02 Nov 2022 12:16
Last Modified:02 Nov 2022 12:16

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