Marseille, France, 14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 1 ADYN A DVANCED EUROPEAN TILTROTOR DY NAMICS AND N OISE Dr. Pierangelo MASARATI Dipartimento di Ingnegneria Aerospaziale Politecnico di Milano 30 th European Rotorcraft Forum Marseille, France September 14-16, 2004 NUMERICAL WHIRL-FLUTTER INVESTIGATION OF THE EUROPEAN TILTROTOR CONCEPT: CURRENT STATUS AND FUTURE PROSPECTS
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Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 1
ADYNADVANCED EUROPEAN TILTROTOR
DYNAMICS AND NOISE
Dr. Pierangelo MASARATI
Dipartimento di Ingnegneria AerospazialePolitecnico di Milano
30th European Rotorcraft ForumMarseille, France
September 14-16, 2004
NUMERICAL WHIRL-FLUTTER INVESTIGATIONOF THE EUROPEAN TILTROTOR CONCEPT:
CURRENT STATUS AND FUTURE PROSPECTS
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 2
Emanuele BianchiAgusta (I)
Anselmo RussoCIRA (I)
Fritz KießlingDLR (D)
Rogelio FerrerEurocopter (F)
Oliver DieterichEurocopter (D)
Consortium & Acknowledgments
Mauro FrosoniIDS (I)
Richard BakkerNLR (NL)
Vasilis RiziotisNTUA (GR)
Didier PetotONERA (F)
Massimiliano LanzPOLIMI (I)
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 3
EUROPEAN TILTROTOR CONCEPT
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 4
EUROPEAN TILTROTOR CONCEPT
� Nacelle tilting interconnected
� Outer portions of wing independently tiltable
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 5
ADYN description
WP1 Whirl-Flutter: Requirements and Preliminary CalculationsNumerical simulation of tiltrotor whirl flutter behaviourInvestigation on major design parameters Wind tunnel model requirements
WP2 Whirl-Flutter: Model Preparation and TestDesign and manufacture of a Dynamically-scaled half-span WT model Test campaign in a high speed WTValidation of computational tools with experimental database
WP3 Aeroacoustic Assessment and OptimisationWT tests of TILTAERO’ s rotor to explore its noise characteristicsDesign and manufacture of a new blade with improved noise characteristicsWT tests of the new blades Validation of computational tools with experimental database
WP4 High-Speed Performance AssessmentWT tests of rotors to measure and validate the performances
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 6
ADYN description
� Enhance the EU knowledge on tiltrotor technologies by deeply analyzing whirl-flutter
� Comparison of analytical and experimental results
� Tests of a half-span scaled model in high speed wind tunnel facilities
� The wind tunnel model will help optimize rotor blade design for low external noise
� The project will provide final recommendations for the design of a full-scale tiltrotor flight demonstrator (European Tiltrotor Concept)
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 7
T 1.1: Mathematical modelsST 1.1.1: Preliminary WF and dynamic behavior prediction (C)ST 1.1.2: WT model stability and WF prediction (C)ST 1.1.3: Analysis of special aspects regarding WF (A)ST 1.1.4: WT model update and prediction of WF boundary (F)
T 1.2: Establishment of model requirements & variants to TILTAERO
WP 2: Whirl Flutter Model Preparation & Test
Marseille, France,14-16 September 2004 WP1: NUMERICAL WHIRL-FLUTTER INVESTIGATION 8