Validation of aeroacoustic predictions using the heliNOVI database

Pidd, M; Dummel, A; Falchero, D; Genito, M; Prospathopoulos, J; Visingardi, A; Voutsinas, SG; Yin, J

dc.contributor.author	Pidd, M	en
dc.contributor.author	Dummel, A	en
dc.contributor.author	Falchero, D	en
dc.contributor.author	Genito, M	en
dc.contributor.author	Prospathopoulos, J	en
dc.contributor.author	Visingardi, A	en
dc.contributor.author	Voutsinas, SG	en
dc.contributor.author	Yin, J	en
dc.date.accessioned	2014-03-01T02:51:18Z
dc.date.available	2014-03-01T02:51:18Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35456
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-34547611353&partnerID=40&md5=7baf0f4ce538944a29986ca3f3be2db2	en
dc.subject	Aeroacoustics	en
dc.subject	Complete rotorcraft	en
dc.subject	HeliNOVI	en
dc.subject	Tail rotor noise validation	en
dc.subject.other	Accident prevention	en
dc.subject.other	Acoustics	en
dc.subject.other	Aerodynamics	en
dc.subject.other	Computer simulation	en
dc.subject.other	Database systems	en
dc.subject.other	Helicopters	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rotors	en
dc.subject.other	Aeroacoustics	en
dc.subject.other	Complete rotorcraft	en
dc.subject.other	Tail rotor noise validation	en
dc.subject.other	Project management	en
dc.title	Validation of aeroacoustic predictions using the heliNOVI database	en
heal.type	conferenceItem	en
heal.publicationDate	2007	en
heal.abstract	The European research project HeliNOVI was aimed at the enhancement of helicopter performance, safety and ride comfort. Within this project one of the principal aims was the study of the aerodynamics and aeroacoustics of the tail rotor in order to reach a deeper knowledge of the phenomena related to it. A key activity was the design of a wind tunnel test employing the existing powered 40%-scaled BO105 helicopter model for the generation of a high-quality database for code validation and assessment of tail rotor noise reduction means and the exploitation of this database for the validation of simulation codes. This validation activity included code-to-code and code-to-test comparisons using the predicted and wind tunnel results. A validation activity for acoustic prediction results from six of the HeliNOVI partners has been performed. The details of the range of partners' methods applied for aircraft trim, wake modelling, aerodynamic and aeroacoustic solutions are described. The numerical/experimental comparisons of the results obtained by the partners show a significant variation in the level of agreement with the HeliNOVI experimental data, but generally capture some of the interaction effects between main and tail rotors. Loading noise often dominates the results and it is found that the trim methodology is crucial to the acoustic prediction. Indeed the large variation in the acoustic predictions is largely due to the variation in the results of the preceding aerodynamic analyses. The HeliNOVI database of experimental and predicted dynamic, aerodynamic and aeroacoustic data provides a valuable asset for further development and validation of acoustic prediction capabilities.	en
heal.journalName	National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006	en
dc.identifier.volume	1	en
dc.identifier.spage	112	en
dc.identifier.epage	135	en