Numerical investigation of integral twist actuation for BVI noise reduction

Thepvongs, S; Cesnik, CES; Voutsinas, SG

dc.contributor.author	Thepvongs, S	en
dc.contributor.author	Cesnik, CES	en
dc.contributor.author	Voutsinas, SG	en
dc.date.accessioned	2014-03-01T02:50:42Z
dc.date.available	2014-03-01T02:50:42Z
dc.date.issued	2006	en
dc.identifier.issn	15522938	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35153
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33748468753&partnerID=40&md5=b539c061e60cca25fdefd132b6633a4b	en
dc.subject.other	Computer simulation	en
dc.subject.other	Flow interactions	en
dc.subject.other	Natural frequencies	en
dc.subject.other	Noise abatement	en
dc.subject.other	Rotors	en
dc.subject.other	Vortex flow	en
dc.subject.other	Blade-vortex interactions	en
dc.subject.other	Integral-twist actuation	en
dc.subject.other	Interaction angle	en
dc.subject.other	Miss-distance	en
dc.subject.other	Actuators	en
dc.title	Numerical investigation of integral twist actuation for BVI noise reduction	en
heal.type	conferenceItem	en
heal.publicationDate	2006	en
heal.abstract	The effect of integral-twist actuation on noise induced by blade-vortex interactions is determined through numerical simulation. Acoustic results are first compared with experimental data for verification of the developed numerical framework. Integral twist actuation is evaluated at several frequencies and amplitudes. Noise reduction is shown to occur through changes in the blade-vortex miss-distance, interaction angle and the rotor disk lift distribution. Similarity in these characteristics is found for most minimum noise conditions. The combined effect of all interaction parameters is found to be important. Copyright © 2006 by the American Helicopter Society International, Inc. All rights reserved.	en
heal.journalName	Annual Forum Proceedings - AHS International	en
dc.identifier.volume	II	en
dc.identifier.spage	919	en
dc.identifier.epage	934	en