HeliNOVI: Current vibration research activities

Dieterich, O; Langer, H-J; Schneider, O; Imbert, G; Hounjet, MHL; Riziotis, V; Cafarelli, I; Alonso, RC; Clerc, C; Pengel, K

dc.contributor.author	Dieterich, O	en
dc.contributor.author	Langer, H-J	en
dc.contributor.author	Schneider, O	en
dc.contributor.author	Imbert, G	en
dc.contributor.author	Hounjet, MHL	en
dc.contributor.author	Riziotis, V	en
dc.contributor.author	Cafarelli, I	en
dc.contributor.author	Alonso, RC	en
dc.contributor.author	Clerc, C	en
dc.contributor.author	Pengel, K	en
dc.date.accessioned	2014-03-01T02:50:06Z
dc.date.available	2014-03-01T02:50:06Z
dc.date.issued	2005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34898
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33746649544&partnerID=40&md5=744af0b2f8686423886f2683316d40b4	en
dc.subject.other	Flight dynamics	en
dc.subject.other	Helicopters	en
dc.subject.other	Project management	en
dc.subject.other	Rotors	en
dc.subject.other	Wind tunnels	en
dc.subject.other	Elastic blades	en
dc.subject.other	Excitation sources	en
dc.subject.other	Rotorcraft community	en
dc.subject.other	Vibration prediction	en
dc.subject.other	Vibration control	en
dc.title	HeliNOVI: Current vibration research activities	en
heal.type	conferenceItem	en
heal.publicationDate	2005	en
heal.abstract	Reliable vibration prediction for helicopters is still an ambitious task for the rotorcraft community. Current theoretical approaches partition the vibration prediction problem into a vibration excitation task dominated by the main rotor as major excitation source and into a response problem of the elastic airframe. For the analysis of vibratory rotor loads introduced into the airframe, rotor codes considering elastic blades and complex wake structures are state-of-the-art for vibration prediction. Due to the difficulties experienced in reliable vibration prediction, full scale flight tests are in past and at present a typical approach in industry for the evaluation of rotorcraft vibration behaviour. In order to improve this situation with respect to vibration prediction and reduction, one work package of the European research project HeliNOVI is dedicated to vibration research focussing on a BO105 helicopter by experimental and theoretical means. The experimental part of HeliNOVI vibration research is based on a wind tunnel test campaign of the BO105 model in the open test section of DNW LLF. The test campaign focussed on the role of the main rotor as most important excitation source for vibrations using advanced measurement techniques like SPR (stereo pattern recognition) and PIV (particle image velocimetry). The wind tunnel test activities are complemented by flight tests of the DLR BO105. These experimental results serve as a comprehensive database for validation purposes of vibration prediction codes within HeliNOVI. This paper gives an overview of the vibration research activities within the HeliNOVI project. Main focus is given to the preparation and performance of the wind tunnel test campaign and to the presentation of selected wind tunnel test results.	en
heal.journalName	31st European Rotorcraft Forum	en
dc.identifier.volume	2005	en
dc.identifier.spage	83.1	en
dc.identifier.epage	83.14	en