Mercedes SLK Magic Sky Control


With the next generation SLK-Class which is due to be released next year as 2012 model, Mercedes will introduce a new kind of roof!

As you know the SLK features a folding metal roof which of course remains intact in the new model, but a new feature is added into it, which they call the Magic Sky Control.

It is very complex technically and you can learn about it by reading the official details below, but in essence it is a full panoramic glass roof that at the touch of a button can be made either transparent or darkened. Of course it still can be folded into the boot electronically.

Mercedes slk spy 9 Mercedes SLK Magic Sky Control

Mercedes-Benz will be the first automotive manufacturer to offer the new glass roof – called the panoramic vario-roof with MAGIC SKY CONTROL – as an optional extra in the new SLK next year. Thanks to this new development, the transparent glass roof can be darkened on demand in a matter of seconds. By affording shade and a unique ambience, it helps to ensure a pleasant wellness atmosphere in the vehicle interior.
Since the innovative glass also shields against the sun’s rays far more effectively than conventional thermal insulation glass or sunblinds, the occupants of the new SLK will also enjoy the highest level of climatic comfort at the same time. When driving with the roof open would be unpleasant due to intense heat, the driver and front passenger are able to remain composed under the MAGIC SKY CONTROL roof – an important contribution towards feeling comfortable and driver-fitness safety, a concept typically promoted by Mercedes. Even when the vehicle is at a standstill the interior does not overheat, since the roof is switched to darkened mode when powered off.
The operating principle is based on the physics of a plate condenser: if the glass structure is subjected to an electrical voltage, particles in the structure position themselves so that light is able to pass through the glass. If the voltage remains switched off, however, the particles position themselves randomly. This partially blocks the light, and the glass remains dark. The control unit and converter are integrated into the front section of the roof, and the switch is in the overhead control console.
In addition to the unique panoramic effect and transparency at the touch of a button, MAGIC SKY CONTROL also provides a top-class wellness atmosphere. UV and infrared light are also effectively blocked in transparent mode, while insulation increases even more significantly and noticeably in darkened mode, thereby helping to keep the temperature on interior parts such as armrests cooler by up to 10 degrees Celsius compared with conventional green glass.
The demanding Mercedes-Benz endurance test programme which prototypes fitted with the switchable glass roof had to pass around the globe included harsh practical tests conducted in Death Valley in the USA – one of the hottest places on earth. Under the heat of the baking sun, summer temperatures there regularly hit over 50 degrees Celsius in the shade. The test engineers made the most of these conditions to heat up the SLK prototypes with transparent roofs for four hours around midday, for example. They then switched the roofs to non-transparent mode and immediately noticed significant relief from the torturing heat. Thermal images showed that temperatures in the region of the head were reduced.
Measurements using a device called a star pyranometer revealed why this was the case. This device measures the intensity of exposure to sunlight. With an open roof, the load from the sun in the heat of Death Valley reached 1000 to 1100 W per square metre. With the transparent glass roof it dropped to 200 W, and when the roof was switched to darkened mode with MAGIC SKY CONTROL, it dropped to 40 to 50 W – one 20th of the original value.But MAGIC SKY CONTROL not only benefits passengers. Some of the strain is also taken off the air-conditioning system, thereby in turn saving on CO2 emissions.
The panoramic vario-roof with MAGIC SKY CONTROL will be available to order as an optional extra for less than 2000 euros.
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