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Old 04-18-2015, 12:55 PM   #1 (permalink)
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Best aerodynamic curved line

BEST AERODYNAMIC SHAPE, CURVED LINE (low Cd)

I have a chaos is most correct.

Original ecomodder template 1


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solar car curved


best EDIT curved line template




BEST CURVED LINE......


Last edited by slipknotsv; 04-18-2015 at 01:29 PM..
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Old 04-18-2015, 01:37 PM   #2 (permalink)
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Volkswagen



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Old 04-18-2015, 02:15 PM   #3 (permalink)
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It is best CURVED LINE
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Old 04-18-2015, 03:06 PM   #4 (permalink)
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aerohead Hi please original aerodynamic curved line

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Old 04-18-2015, 03:11 PM   #5 (permalink)
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best

Quote:
Originally Posted by slipknotsv View Post
It is best CURVED LINE
I'm not sure that it's the best,but it would be low risk to anyone considering aft-body streamlining.
Here are a few which Rolf Buchheim and his associates tested at 1/5-scale at Volkswagen,including their plan-view,along with their coefficients of aerodynamic drag.
The 1922 Wolfgang Klemperer body

The 1981 'Drop' body

The 1981 'Blunt' body

The 1981 'Flow' body (truncated tail)

The 1981 'Flow' body (full body)

They also tested the 1937 AVA G'o'ttengen Schl'o'r pilbug car
@ 1/5-scale it was Cd 0.15 with a smooth belly
@ 1:1 scale it was Cd 0.158 with a smooth belly
@ 1:1 scale it was Cd 0.186 with a 'standard' underbody

I don't have its plan-view scanned yet.Sorry.
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With 'features' drag,all the models would have a little higher drag (0.008 in the case of the Pilbug car).
*Adding mirrors might add in the range of 0.015 (as with the Ford FUSION LSR car).
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Old 04-18-2015, 03:20 PM   #6 (permalink)
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1st-gen HONDA Insight

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aerohead Hi please original aerodynamic curved line

The 'Template' suggests that the Insight's roofline is a tiny bit too aggressive,and prone to separation.
The smoke flow image from HONDA also suggests the same thing.

NOTE: If the car is not ballasted,with weight in the front seats,its body inclination may not represent what it will be when 'occupied' by the driver and passenger.If so,the flow would be more favorable.We'd need to get one in the wind tunnel ourselves,and check this.
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Old 04-18-2015, 03:27 PM   #7 (permalink)
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Quote:
Originally Posted by aerohead View Post
The 'Template' suggests that the Insight's roofline is a tiny bit too aggressive,and prone to separation.
The smoke flow image from HONDA also suggests the same thing.

NOTE: If the car is not ballasted,with weight in the front seats,its body inclination may not represent what it will be when 'occupied' by the driver and passenger.If so,the flow would be more favorable.We'd need to get one in the wind tunnel ourselves,and check this.
yes of course

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