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Passive hypersonic boundary layer control: The Potential of an Ultrasonically Absorptive Ceramic for HEXAFLY-INT

Wartemann, Viola and Wagner, Alexander and Eggers, Thino (2016) Passive hypersonic boundary layer control: The Potential of an Ultrasonically Absorptive Ceramic for HEXAFLY-INT. AIAA Aviation – 8th AIAA Flow Control Conference, 13. - 17. Juni 2016, Washington, USA. DOI: 10.2514/6.2016-4250

Full text not available from this repository.

Abstract

The potential of ceramic matrix composites (CMC) for passive boundary layer transition control on the hypersonic flight vehicle HEXAFLY-INT is investigated. CMC can be manufactured as ultrasonically absorptive ceramic: for the presented numerical investigations carbon fiber reinforced carbon material (C/C) is used for the passive damping of acoustic second mode instabilities. The analyses are performed with the stability code NOLOT, NOnLOcal Transition analysis, of the German Aerospace Center (DLR). The boundary conditions of the NOLOT code are extended for the application of random porous surfaces and consider the acoustic properties of the C/C. In this paper a trajectory segment of interest for the application of ultrasonically absorptive ceramics on the HEXAFLY-INT hypersonic glider is investigated. For chosen flight conditions and a corresponding test condition of the DLR High Enthalpy Shock Tunnel Göttingen (HEG) detailed stability analyses with NOLOT are performed: this includes the investigation of the second mode damping due to the passive porous ceramic.

Item URL in elib:https://elib.dlr.de/104895/
Document Type:Conference or Workshop Item (Speech)
Title:Passive hypersonic boundary layer control: The Potential of an Ultrasonically Absorptive Ceramic for HEXAFLY-INT
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wartemann, Violaviola.wartemann (at) dlr.deUNSPECIFIED
Wagner, Alexanderalexander.wagner (at) dlr.deUNSPECIFIED
Eggers, Thinothino.eggers (at) dlr.deUNSPECIFIED
Date:June 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2016-4250
Status:Published
Keywords:second mode, Mack mode, passive boundary layer transition control, ceramic matrix composites, HEXAFLY-INT
Event Title:AIAA Aviation – 8th AIAA Flow Control Conference
Event Location:Washington, USA
Event Type:international Conference
Event Dates:13. - 17. Juni 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Shefex III
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Wartemann, Viola
Deposited On:30 Jun 2016 10:24
Last Modified:30 Jun 2016 10:24

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