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Old 05-04-2022, 11:39 AM   #2 (permalink)
freebeard
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If this is the case, then could the same principle apply to say the underbody of the same pickup. Rather than a full belly pan (attached or "shaped") but rather a fin arrangement, directing or "influencing" the flow outward as opposed to directly under.
I don't think they're the same situation. The aerocap is in free air while the underbody is a plenum with four open sides and a moving roof. There will be interference drag and the wake of the four wheels.

The only 'fin arrangement' I can think of are the canted side skirts under some semi trailers. And the strakes in this illustration:



"As beneficial" may be a stretch.
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