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What are these additions and do they work?

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What are these additions and do they work?

Postby KevofCov » Sat May 26, 2018 3:43 pm

Spotted this van with ‘arrow heads’ whilst sat in traffic yesterday. Can anybody throw any light on what these are and do they work. I’ve seen them on lorries and I guess they disrupt air flow for fuel economy……
arrows.jpg
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Re: What are these additions and do they work?

Postby ned » Sat May 26, 2018 9:18 pm

I have seen a few hgvs with them on and wondered the same. N
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Re: What are these additions and do they work?

Postby bambi mk 1 » Sat May 26, 2018 9:43 pm

ned wrote:I have seen a few hgvs with them on and wondered the same. N

Here you go Ned https://www.youtube.com/watch?v=BvXDxobNteA
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Re: What are these additions and do they work?

Postby Mac1984 » Sun May 27, 2018 7:56 am

Nice one Bambi .

I would assume it's some kind of vortex generator? Reminds of vortex generators that you see on airplanes fuselages and wings anyways.

But personally I have never seen that on a vehicle before..
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Re: What are these additions and do they work?

Postby KevofCov » Sat Jun 09, 2018 9:23 am

Found the following link.

Although some credability is gained by NASA being involved, if it worked as suggested then all lorries would have them........


https://spinoff.nasa.gov/Spinoff2008/t_3.html
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