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ACTUATION OF AN ADAPTIVE SHOCK CONTROL BUMP USING PRESSURIZED CHAMBERS

Alves de Sousa, Nuno und Afzal, Suleman und Kintscher, Markus (2017) ACTUATION OF AN ADAPTIVE SHOCK CONTROL BUMP USING PRESSURIZED CHAMBERS. In: Proceedings of ICEDyn 2017 - International Conference on Structural Engineering Dynamics, 59. Instituto de Engenharia Mecânica (IDMEC), Instituto Superior Técnico, University of Lisbon. ICEDyn 2017 - International Conference on Structural Engineering Dynamics, 2017-07-03 - 2017-07-05, Ericeira, Portugal.

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Kurzfassung

The dawn of research on shock and boundary layer interaction control dates back to the 1970s, when humped transonic aerofoils were first studied as a means to improve the performance of supercritical aerofoil technology at off-design conditions. Since then, shock control bumps (SCBs) have been found to be promising devices for such kind of flow control. They have a smearing effect on the shock wave structure achieved through isentropic pre-compression of the flow upstream of the main shock and can significantly lower wave drag without incurring unacceptable viscous losses. However, their performance is strongly dependent on a set of geometrical parameters which must be adjusted according to the ever-changing flight conditions. A concept for an adaptive SCB is therefore presented. The proposed actuation mechanism aims at a compact, lightweight and simple structure which could be integrated in the spoiler region of near-future aircraft without major design changes required. Numerical optimization of a simplified analytical model of the structure is used to investigate the SCB adaptation to various aerodynamic target shapes. Compromises between geometrical conformity and both structural and actuation related requirements are studied. Furthermore, an outlook is given on design issues related to three-dimensional effects on a finite-width SCB.

elib-URL des Eintrags:https://elib.dlr.de/115483/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:ACTUATION OF AN ADAPTIVE SHOCK CONTROL BUMP USING PRESSURIZED CHAMBERS
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Alves de Sousa, Nunoinstituto superior tecnico, universidade lisaboaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Afzal, SulemanInstituto Superior Técnico, Universidade de LisboaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kintscher, Markusmarkus.kintscher (at) dlr.dehttps://orcid.org/0000-0003-0600-0135NICHT SPEZIFIZIERT
Datum:2017
Erschienen in:Proceedings of ICEDyn 2017 - International Conference on Structural Engineering Dynamics
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:59
Verlag:Instituto de Engenharia Mecânica (IDMEC), Instituto Superior Técnico, University of Lisbon
Status:veröffentlicht
Stichwörter:Shock control bump; wave drag minimization; morphing spoiler; pressure actuated adaptive structure; structural optimization
Veranstaltungstitel:ICEDyn 2017 - International Conference on Structural Engineering Dynamics
Veranstaltungsort:Ericeira, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:3 Juli 2017
Veranstaltungsende:5 Juli 2017
Veranstalter :IDMEC/Instituto Superior Técnico
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen und Werkstoffe (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Adaptronik
Hinterlegt von: Kintscher, Dr.-Ing. Markus
Hinterlegt am:23 Nov 2017 14:41
Letzte Änderung:24 Apr 2024 20:19

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