Notes Design

Built in 1980 in Warren, Michigan, the General Motors wind tunnel is one of the biggest in the industry. Constructed from 20,000 cubic yards of reinforced concrete, a 43-foot fan in the center of the tunnel can generate wind speeds of up to 138 mph. which is powered by a 4,500-horsepower, variable-speed, DC electric motor. Engineers not only study airflow to minimize drag, 40 percent of their work is focused on reducing the sound of wind noise in the car's interior.

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