Training centre for world champions.
New aeroacoustic wind tunnel officially opened.
“The inauguration of the new aeroacoustic wind tunnel demonstrates once again that the heart of the automotive industry beats in Sindelfingen,” commented Dr Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars, who opened the aeroacoustic wind tunnel at an official ceremony together with Günther Oettinger, European Commissioner for Energy. “The future investments made here by Mercedes-Benz will ensure that this remains the case by reinforcing Baden-Württemberg’s status as a high-tech location and safeguarding the company’s technology and innovative leadership in the premium segment.” The new aeroacoustic wind tunnel is just one element in a comprehensive programme of investment in vehicle development being undertaken at the Sindelfingen site.
Joining the climate tunnel taken into operation two years ago, and the driving simulator centre, it rounds off the new test facilities at the Mercedes-Benz Technology Centre.
New aeroacoustic wind tunnel is the most advanced facility in the world.
Its excellent flow quality, very low background noise levels, sophisticated roadway simulation and high efficiency make the new aeroacoustic wind tunnel at the development centre in Sindelfingen one of the most advanced facilities in the world. It follows the so-called “Göttingen design”, whereby the air is redirected to the blower after the measuring section and then re-accelerated to 265 km/h. With a nozzle system of 28 sq. m this maximum wind speed cannot be reached by any other wind tunnel for cars. Extensive noise insulation measures are integrated to allow use as an acoustic tunnel where interior and exterior wind noise can be measured for the relevant test vehicle. Even at 140 km/h the air flows through the measuring section almost without a sound. These features make it the quietest aeroacoustic wind tunnel in the world.
World champion for aerodynamics in virtually all vehicle classes.
For almost three decades, the aerodynamic specialists at Mercedes-Benz have been breaking one record after another. The current world record is held by the new CLA-Class, in its BlueEFFICIENCY Edition guise, with a Cd value of 0.22 and a wind resistance area of 0.49 sq. m. The drag coefficient of the new S-Class improves on that of its predecessor by a further two hundredths – with a Cd value of 0.24 it not only sets a new benchmark in its segment, but is the best saloon overall in this respect. The S 300 BlueTEC HYBRID is even more aerodynamic. The diesel hybrid model achieves a Cd value of 0.23 and, not least as a result of this extremely low wind resistance, delivers impressive fuel consumption figures of just 4.4 l/100 km, or 115 g/km CO₂/km.
Much ado about wind – a long tradition at Mercedes-Benz.
Mercedes-Benz was the first automobile manufacturer to have its own wind tunnel: the “large wind tunnel” in Stuttgart-Untertürkheim. On 5 February 1943 the first documented measurement was carried out there. The wind tunnel in Untertürkheim, which has been in the company's ownership since the 1970s and was technically updated several times over the years, is still indispensable for the Mercedes-Benz developers, particularly for soiling analyses or windscreen wiper testing.
And the “large wind tunnel” more than lives up to its name: for it is here that Mercedes-Benz commercial vehicles are also honed to perfection.