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Development of Helicopter EXhaust Engine NOise Reduction technologies

Objective

"The HEXENOR proposal aims to study, design and manufacture three items ( short, mean, and long) each made of two innovative concepts, a quiet plug and a quiet diffuser which will be mounted on a turboshaft engine to reduce the noise radiated by the exhaust. A preliminary study is concerned with the capability of two materials a Ferritic stainless steel (low cost material) and TiAl alloy (light but fragile material) to satisfy the design constraints and the engine hard conditions. High cycle fatigue, thermo-mechanical and metallurgical characterization tests will be conducted before the design step. Also an academic work will be achieved to determine an optimal
configuration of a new quiet diffuser concept made of angular and axial cavities surrounding an internal perforated wall of the duct lined section. This approach is based on the measurement with a flow duct facility developed during the Ducat European program without and with cold flow of the liner configurations efficiency for a higher order mode incident pressure vector and the development of an analytical model of the acoustic propagation through the lined barrel leading to the calculation of the attenuation of each configuration with and without flow. The choice of the optimal configuration which will be used to design the quiet diffuser will be the result of a tradeoff between acoustic efficiency provided by the academic study, mass and cost specifications."

Call for proposal

SP1-JTI-CS-2011-01
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Coordinator

UNIVERSITE DE TECHNOLOGIE DE COMPIEGNE
Address
Rue Du Docteur Schweitzer Cs 60319 Centre Pierre Guillaumat
60203 Compiegne Cedex
France
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 202 975
Administrative Contact
Jean-Michel Ville (Prof.)

Participants (4)

APERAM STAINLESS FRANCE SA
France
EU contribution
€ 31 040
Address
30 Avenue Des Fruitiers
93212 Saint Denis
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Pierre-Olivier Santacreu (Dr.)
FORMTECH GMBH
Germany
EU contribution
€ 132 870
Address
Mittelwendung 35
28844 Weyhe
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Werner Beck (Mr.)
GFE METALLE UND MATERIALIEN GMBH
Germany
EU contribution
€ 70 038
Address
Höfener Strasse 45
90431 Nurnberg
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Volker Guether (Dr.)
INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE TURBOMOTOARE - COMOTI
Romania
EU contribution
€ 229 142
Address
Iuliu Maniu Avenue 220D, Sector 6
061126 Bucharest 6
Activity type
Research Organisations
Administrative Contact
Gheorghe Fetea (Dr.)