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Cabin noise Reduction by Experimental and numerical Design Optimization

Obiettivo

Motivated by the aircraft industry's acute need to validate and calibrate prediction models and advanced design tools for the cost-effective design of low-noise cabins, the CREDO project addresses a critical deficiency in the available data by developing technologically viable experimental procedures and analytical tools by which the sound power entering an aircraft cabin can be determined sufficiently quickly, accurately and with the necessary spatial resolution. Owing to the reverberant nature of the sound field in an aircraft cabin, existing methods are categorically insufficient for this task and entirely new methods shall be developed.
Two parallel approaches are pursued. In the first, the sound power entering the cabin is locally extracted from local measurements of the total field. This approach employs a hitherto unavailable microphone array concept: the double layer array, together with purpose-developed processing and procedural algorithms. In the second approach, the sound power entering the cabin is determined globally through numerical inversion of measurements throughout the entire cabin using the new experimental tools. This will be achieved with pioneering Inverse Finite Element implementations and groundbreaking Inverse Simplified Energy Methods, developed in close connection with novel measurement technology and algorithms, extended from the local to the global level. At all stages in the project, the interaction between local and global approaches and between measurement and processing is exploited to maximum innovative effect.
The successful implementation of the results of these developments is ensured by a carefully designed validation campaign involving ground and flight tests in both aircraft and helicopter cabins.

Campo scientifico

  • /ingegneria e tecnologia/ingegneria meccanica/ingegneria dei veicoli/ingegneria aerospaziale/aeromobile/aerogiro
  • /scienze umanistiche/lingue e letteratura/linguistica/fonetica

Invito a presentare proposte

FP6-2005-AERO-1
Vedi altri progetti per questo bando

Meccanismo di finanziamento

STREP - Specific Targeted Research Project

Coordinatore

UNIVERSITÀ POLITECNICA DELLE MARCHE
Indirizzo
Piazza Roma 22
Ancona
Italia

Partecipanti (14)

ALENIA AERONAUTICA S.P.A.
Italia
Indirizzo
Viale Dell'aeronautica S.n.c.
Pomigliano D'arco (Na)
BRNO UNIVERSITY OF TECHNOLOGY
Cechia
Indirizzo
Antoninska 548/1
Brno
BRÜEL & KJÆR SOUND & VIBRATION MEASUREMENT A/S
Danimarca
Indirizzo
Skodsborgvej 307
Nærum
DASSAULT AVIATION
Francia
Indirizzo
9, Rond-point Des Champs-elysées Marcel Dassault
Paris
DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.
Germania
Indirizzo
Linder Hoehe
Koeln
EADS DEUTSCHLAND GMBH
Germania
Indirizzo
Willy-messerschmitt-straße
Munich
ECOLE CENTRALE DE LYON
Francia
Indirizzo
Av Guy De Collongue, 36
Ecully
EUROCOPTER DEUTSCHLAND GMBH
Germania
Indirizzo
Willy-messerschmittstr., Tor 1
Muenchen
FREE FIELD TECHNOLOGIES
Belgio
Indirizzo
16 Place De L?université
Louvain-la-neuve
UNIVERSITÉ DU MAINE - LABORATOIRE D'ACOUSTIQUE
Francia
Indirizzo
Avenue Olivier Messiaen
Le Mans
ØDEGAARD & DANNESKIOLD-SAMSØE A/S
Danimarca
Indirizzo
Titangade 15
Copenhagen
POLITECNICO DI MILANO
Italia
Indirizzo
P.za Leonardo Da Vinci 32
Milano
UNIVERSITÀ DI NAPOLI FEDERICO II
Italia
Indirizzo
Corso Umberto I
Napoli
AGUSTA S.P.A.
Italia
Indirizzo
Via Giovanni Agusta, 520
Samarate (Va)