Every km matters: Hyundai and Kia introduce Active Air Skirt to improve aerodynamics and range for EVs

Hyundai Motor Company and Kia Corporation have unveiled the 'Active Air Skirt' (AAS) technology, aimed at reducing aerodynamic resistance during high-speed driving and enhancing the performance and stability of electric vehicles (EVs).

AAS operates by controlling the airflow entering through the lower part of the bumper, effectively managing turbulence around the vehicle wheels based on variable adjustments according to the car's speed during high-speed driving.

AAS is placed between the front bumper and the front wheels, remaining hidden during normal operation but activating at speeds exceeding 80 km/h when aerodynamic resistance surpasses rolling resistance. It retracts again at 70 km/h to prevent unnecessary operation within specific speed ranges.

AAS's unique design, covering only the front part of the tires and not the entire front like a Porsche 911 Turbo, aligns with the characteristics of Hyundai Motor Group's E-GMP platform for EVs. The flat platform floor makes it more effective to enhance aerodynamic performance by covering only the tyre section, improving downforce, vehicle traction, and high-speed stability.

The technology doesn't shy away from high speeds, operating efficiently at speeds exceeding 200 km/h, thanks to the application of rubber material on the lower part, reducing the risk of external object splashes and damage while ensuring durability.

Hyundai Motor and Kia reported tests on the Genesis GV60, revealing a drag coefficient (Cd) reduction of 0.008, translating to a 2.8 percent improvement in drag and an anticipated additional range improvement of about 6 km.

The companies have filed related patents in South Korea and the United States, with plans to consider mass production pending durability and performance tests.

This variable front lip technology can be seen as far back as the 80s, not just on the latest Porsche. Here’s Nissan’s take on it in the R31 Skyline:

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