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Consumers like quiet vehicles. Aiolos staff have responded by constructing a number of aeroacoustic wind tunnels around the world. Aeroacoustic wind tunnels provide uniform wind conditions, similar to pure aerodynamic wind tunnels except that the background noise levels are reduced in order for the wind noise to be correctly measured without contamination.
| CIRA Low Speed Wind Tunnel |
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| A major design effort was completed by Aiolos under contract to Turbo-Lufttechnik GmbH for a low speed wind tunnel planned by CIRA to be located in Capua, Italy. Aiolos had overall design responsibility for a facility which included interchangeable test sections: 7.2m x 5.5m slotted-wall & open-jet test sections; 4.4m x 5.5m solid-wall & open-jet test sections, including various test techniques to make it state-of-the-art in aerodynamic/aeroacoustic testing. The design was completed in 1996 when the project was put on hold. |
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| GIE S2A Aeroacoustic Wind Tunnel Complex |
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| This wind tunnel complex was funded by a unique consortium of Peugeot Citroën, Renault Cars and the Centre National des Arts et Métiers (CNAM), formed to establish a center of excellence in automotive development in order to maintain the French auto industry’s strong position in the European market. Aiolos was the prime contractor for the flagship facilities in this complex including the building, consisting a 24 m˛ wind tunnel for aerodynamic and aero-acoustic testing of full scale cars and another one for aerodynamic testing of 2/5 scale model cars. The GIE project was completed on time in 2003, due in no small part to its partner for construction, Spie Batignolles of France. |
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| HMC Aeroacoustic Wind Tunnel |
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| This wind tunnel has become the flagship facility for Hyundai Motor Company at their Namyang R&D Centre near Seoul, Korea. The major test capabilities of this wind tunnel, designated HAWT, are aerodynamic testing, aeroacoustic testing and hot thermodynamic testing. Support equipment in the 28 m2 open-jet test section include an underfloor external balance, a chassis dynamometer, probe traverse system, and a variety of acoustic instrumentation. The Aiolos scope of work included overall design and performance responsibility, and specialized hardware supply, under contract to HEC of Korea. HAWT became operational in 1998. A subsequent contract to Aiolos included relocation of the 25% scale model wind tunnel from the HMC site in Ulsan to the HAWT building. |
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| Sanden International CWT |
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| Sanden International Europe’s New Headquarters and Technical Centre in Bad Nauheim, Germany features an Aiolos supplied 6m˛ Climatic Wind Tunnel. The wind tunnel, which became operational in 2000, was optimized for testing automobile air conditioning components and systems. Sanden set an aggressive humidity control specification because of the significant impact that humidity has on heat transfer. The resulting performance of Aiolos’ systems and controls exceeded Sanden’s specification giving Sanden a one-of-a-kind facility and setting the standard for the future. |
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| Volvo Car AWT upgrade |
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| Volvo Car Corp sole-sourced Aiolos to design, build, install and commission a test section insert for the 27 m2 slotted-wall test section to effect an increase in maximum wind speed from 200 to 250 kph. Included in the scope of supply was a portable boundary layer suctions system which can be used to reduce the floor boundary layer thickness approaching a car when located on the chassis dynamometer. The insert system, which is removable in a short period of time, was completed in 2001. |
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