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The influence of high spanwise chamber extent on HLFC performance

Kilian, Thomas and Bismark, Alexander Heinz and Lüdeke, Heinrich and Schröder, Andreas and van de Kamp, Bram (2021) The influence of high spanwise chamber extent on HLFC performance. Deutscher Luft- und Raumfahrtkongress 2021, 31. Aug. - 02. Sept. 2021, Bremen.

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Abstract

In the scope of the European Clean Sky 2 project HLFC-WIN, the benefits and integrational aspects of HLFC on a long-range wing are investigated. Due to leading edge space being allocated by other systems (e.g. high-lift, anti-icing) the spanwise extent of the internal HLFC plenum chamber, which in former designs covers the majority of the HLFC segment, is reduced to multiple narrow suction ribs, containing the compressors. In combination with the high spanwise extent of the HLFC segments, this leads to a large volume of air being transported via the narrow suction chambers in spanwise direction, rather than semi-directly relayed to a plenum. This spanwise chamber flow causes additional pressure losses within the HLFC system. In order to investigate the magnitude of these pressure losses and their potential impact on the HLFC performance, CFD simulations have been performed, based on a simulation setup previously developed. For validation purposes, the pressure loss along a simplified chamber test rig of 2,75 meters has been measured. The results are presented in this paper along with an estimation of the HLFC wing design impact.

Item URL in elib:https://elib.dlr.de/146656/
Document Type:Conference or Workshop Item (Speech)
Title:The influence of high spanwise chamber extent on HLFC performance
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kilian, ThomasThomas.Kilian (at) dlr.dehttps://orcid.org/0000-0003-1395-608X
Bismark, Alexander HeinzAlexander.Bismark (at) dlr.deUNSPECIFIED
Lüdeke, HeinrichHeinrich.Luedeke (at) dlr.deUNSPECIFIED
Schröder, AndreasA.Schroeder (at) dlr.deUNSPECIFIED
van de Kamp, BramBram.vandeKamp (at) dlr.deUNSPECIFIED
Date:2 September 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Hybrid Laminar Flow Control (HLFC), Wing Design
Event Title:Deutscher Luft- und Raumfahrtkongress 2021
Event Location:Bremen
Event Type:international Conference
Event Dates:31. Aug. - 02. Sept. 2021
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Aircraft Technologies and Integration
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Composite Technology
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Deposited By: Kilian, Thomas
Deposited On:06 Dec 2021 08:37
Last Modified:10 Dec 2021 08:05

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