Quote:
Originally Posted by freebeard
It sounds like the question assumes the benefit would be stability. The paper airplane is in free air. A vehicle is moving through turbulent air next to the ground surface. That changes things.
Some benefit may come from a short duct (less skin friction) to move air from a high pressure to low pressure area. There are cross-sections between round and square.
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Do we know if the lower image is an actual photograph,or an air-brushed rendering depicting an anticipated flow?
I'm struggling with suspension of disbelief with respect to the flow.All of it.