Quote:
Originally Posted by lizardywizard
........... Why is it like that anyway? It doesn't seem like a very convenient design, either for bugs or wind noise.
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Letting some air flow next to the rear face of the windshield energizes that bubble of turbulence and low pressure created between the windshield and your upper body/head.
That extra velocity energy creates a higher throw of the flow at the top edge.
It is just a shame that bugs don't help or care about aerodynamics.
Link to original page on YouTube.
That principle has been used in airplanes as slots at the leading edges of wings, flaps, etc.
Link to original page on YouTube.