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Old 06-24-2020, 02:45 PM   #1 (permalink)
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Box Truck aerodynamics paper

I GOOGLED 'lowest drag box truck in USA'
which took me to :
Aerodynamic Drag Reduction Technology Testing of... NREL,

@ nrel.gov/docs/fy17osti/64610.pdf

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Old 06-25-2020, 06:07 PM   #2 (permalink)
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Quote:
Originally Posted by aerohead View Post
I GOOGLED 'lowest drag box truck in USA'
which took me to :
via DDG:
Quote:
Aerodynamic Drag Reduction Technologies Testing of ... - NREL
https://www.nrel.gov/docs/fy17osti/64610.pdf
National Renewable Energy Laboratory Produced under direction of California Air Resources Board (CARB) by the National Renewable Energy Laboratory (NREL) under Work for Others Agreement number FIA-11-1763 and Task No WW4A.1007. Technical Report NREL/TP-5400-64610 . October 2016
You can copy-and-paste the cite and vBulletin will linkify it for you. Twice but I delete one.
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Old 06-30-2020, 08:17 PM   #3 (permalink)
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Interesting article. Thanks for posting the link. My big takeaways: Testing is hard even for professionals. There are things that can be done to reduce aerodynamic drag in box trucks. It really depends on the intended use of the truck whether it is worth doing or not. For city trucks the extra weight may hurt efficiency.

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The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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