the horizontal fins on the side skirts...
Quote:
Originally Posted by aerohead
...They intrude into the airstream
They stick out from the car
and create a physical boundary
and air can't go through them
which directs the flow
so the air gets pushed by the fin
and helps isolate it
and this keeps it separated
from hostile pressure gradient across the 'border' which might otherwise induce a span-wise flow,spinning up into power-robbing vortices.
from...????
Once the flow is aligned with the fence,
once the air gets pushed by the fence
it builds momentum which tends to keep it moving in that direction.
it keeps going that way
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is that about right?