why when you’re driving and lower the back windows but not the front it makes that debilitating helicopter noise?
In: 121
Buffeting.
> Because cars are so aerodynamic, wind passes over them extremely efficiently. When a window opens, the air flow is disrupted, magnifying the buffeting effect. Older vehicles were designed less efficiently and air leaked from their insides. The leaking air relieves the pressure caused by wind buffeting, reducing the effect.
https://www.familyhandyman.com/article/wind-buffeting-how-to-stop-it/
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