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Old 09-25-2019, 11:09 AM   #3177 (permalink)
aerohead
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severely compromised

Quote:
Originally Posted by Frank Lee View Post
The interference issues are what I'm getting at. I know from my yarn testing that anything that disturbs the flow, disrupts the flow quite a long way downstream, likely to the tail end of the vehicle and beyond into the wake. I suspect the Morelli form which is so nice with no interaction with the ground is so severely compromised by suspension and wheels that a different approach could be more fruitful, say, like the Pillbug.

P.S. I mean yes the Morelli form is what it is because of it's critical proximity to the ground plane. I meant interaction with the ground via wheels 'n' stuff.
Adding wheels to the body doubled the drag,@ 0.35,then after body/wheel integration ended up with Cd 0.23 in production form,if memory serves me.
The body alone,could go as low as Cd 0.055, but it required a ridiculous ground clearance,precise inclination,and rear knife edges.
Tesla has two or three cars in production with the Morelli-shape Cd.
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