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Turboshaft Engine Exhaust Noise Identification

Objective

Helicopters can generate a large amount of external noise, as their traditional missions –rescue, medical, law enforcement– are very close to populated areas. As emphasised in ACARE SRA2, increasing rotorcraft missions in the public vicinity should not lead to increasing public disturbance. Turboshaft engine is known as a major contributor to exterior noise for take-off conditions. ACARE SRA2 objectives imply that noise reduction must be maximised for the most dominant engine noise source in flight. An increased knowledge of the exhaust sound sources balance is then required. Broadband noise at a turboshaft exhaust is assumed to be a mix between combustion and turbine noise. TEENI (Turboshaft Engine Exhaust Noise Identification) will find the relationship between engine modules (combustion chamber, HP Turbine, Power Turbine) and their broadband noise signature and will give a recommendation about the noise source to be reduced in priority. But noise sources breakdown is an ambitious goal, due to the complexity of the physics involved, the harsh environmental conditions, and the small space available. TEENI carries in parallel 4 objectives : 1. To develop sensors for fluctuating quantities, adapted to such an environment 2. To develop noise sources breakdown methods 3. To understand broadband noise generation and propagation through blade rows 4. To discriminate engine exhaust noise sources TEENI’s workplan includes : - Innovative sensors development, - New noise sources breakdown techniques, - Basic studies, including rig experiments, to understand the propagation effects of broadband noise through blade rows. These tests will also help to verify noise breakdown techniques. - New instrumentation and source breakdown techniques will be applied to a full-scale engine test - Development in HELENA (from Friendcopter) of the source breakdown capability - Estimation with HELENA of the engine noise source to be reduced in priority in flight

Field of science

  • /social sciences/law
  • /engineering and technology/mechanical engineering/vehicle engineering/aerospace engineering/aircraft/rotorcraft

Call for proposal

FP7-AAT-2007-RTD-1
See other projects for this call

Funding Scheme

CP-FP - Small or medium-scale focused research project

Coordinator

SAFRAN HELICOPTER ENGINES
Address
Avenue Du President Szydlowski
64510 Bordes
France
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
EU contribution
€ 456 953
Administrative Contact
Pascale Seyres (Ms.)

Participants (10)

ANOTEC CONSULTING SL
Spain
EU contribution
€ 95 560
Address
Calle Rector Jose Vida Soria 7-2
18600 Motril Granada
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Nicolaas Johannes Van Oosten (Mr.)
AVIO SPA
Italy
EU contribution
€ 94 000
Address
Via Antonio Salandra N18
00187 Roma
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Massimo Negro (Dr.)
BRUEL & KJAER SOUND & VIBRATION MEASUREMENT A/S
Denmark
EU contribution
€ 130 350
Address
Skodsborgvej 307
2850 Naerum
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Finn Kryger Nielsen (Mr.)
INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE TURBOMOTOARE - COMOTI
Romania
EU contribution
€ 500 250
Address
Iuliu Maniu Avenue 220D, Sector 6
061126 Bucharest 6
Activity type
Research Organisations
Administrative Contact
Luminita Precob (Ms.)
DEUTSCHES ZENTRUM FUR LUFT - UND RAUMFAHRT EV
Germany
EU contribution
€ 500 994
Address
Linder Hohe
51147 Koln
Activity type
Research Organisations
Administrative Contact
Christine Zöllter (Ms.)
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Switzerland
EU contribution
€ 295 432
Address
Batiment Ce 3316 Station 1
1015 Lausanne
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Hervé Lissek (Dr.)
INASCO HELLAS ETAIREIA EFARMOSMENON AERODIASTIMIKON EPISTIMON EE
Greece
EU contribution
€ 159 000
Address
Napoleontos Zerva 18
16675 Glyfada Athina
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Dimitri Bofilios (Dr.)
MICROFLOWN TECHNOLOGIES BV
Netherlands
EU contribution
€ 564 000
Address
Tivolilaan 205
6824 BV Arnhem
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Alex Koers (Mr.)
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES
France
EU contribution
€ 198 678
Address
Chemin De La Huniere
91120 Palaiseau
Activity type
Research Organisations
Administrative Contact
Jean-Claude Bohl (Mr.)
THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN
Ireland
EU contribution
€ 302 201
Address
College Green
2 Dublin
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Deirdre Savage (Ms.)