A pillar guides

[Cd]

Originally Posted by JulianEdgar

The movie is good but the real story is better.

I watched the movie hoping for more on the machine than the man, but that was not the case.
The same with Ford vs. Ferrari.

[JulianEdgar]

For Ford vs Ferrari, read this.

But again not much tech info - but the *real* story, not the film version.

[Vman455]

Originally Posted by JulianEdgar

Boots and bonnets are UK usage, not really Australian as such. We take after the UK in spelling and word usage (and system of government too, actually).

I took both those quizzes after I posted, and they're not accurate--spelling errors like "emergency break" but also outright incorrect distinctions (e.g. we call them "lawyers" in the US).

[COcyclist]

Originally Posted by JulianEdgar

Today I have found two papers that cover turning vanes.

One paper showed that aerofoil sections are much better than flat plates (what I'd found in my testing) and the other showed that really good gains can be made on older cars' A-pillars by the use of turning vanes (which also supports what my tuft testing showed).

So I'd like to fit them to my Insight, but the same old problem remains. No matter how hard I look, I cannot find an aerofoil-shaped aluminum or plastic extrusion that I can easily buy by the metre that's roughly the right size.

If it is not possible to weld 2 sections together to make the length needed, I have had surprisingly good results with J-B Weld, a very strong epoxy. It would be best to add some dowels in the hollow cavities for alignment and support.

[freebeard]

Model aircraft construction techniques are on point. Foam board wrapped around a spar.

[Piotrsko]

Something has been bothering me here: are these reduction because of the airfoil shape or are they because you are increasing the radius of the pillar?

[JulianEdgar]

Originally Posted by Piotrsko

Something has been bothering me here: are these reduction because of the airfoil shape or are they because you are increasing the radius of the pillar?

I don't know.

But I know that the tuft pattern changed when the inlet/outlet ratio of the guide was changed, and that a curved plate of the same dimensions as the aerofoil did not cause the better tuft pattern, even when its angle was changed in the same way as the aerofoil.

[AeroMcAeroFace]

Originally Posted by freebeard

Model aircraft construction techniques are on point. Foam board wrapped around a spar.

Or hotwire some foam, and use a carbon/wood spar. 3.44 in below video I found. Add a cutout for the spar in the template.

https://www.youtube.com/watch?v=JIRzQO4F8ck

I think this is a potentially useful technique in aerodynamic modifications, maybe only in specific areas but useful nonetheless.

[gumby79]

The hood turning vaine/ slat (? Terminology?) used by a manufacture discused priviously in a nother thread have the same needs as far as considering the angles, span:cord ,some one sugested to mix airfoil with VG/moddified VG mounts set up as "air fence" to prevent span wise seperation as your angle of attack is more of a swept wing leading edge@ ~45° on 2 plains to the direction of flow...

[gumby79]

The 0.125x3" flat wing accrost the hinges on my cap was welded with ~2.5-5°angle of attack to :
Create a small amount of converging duct.(1/8" closure over only3" isnt going to do much if anything.)
Be above the turbulance caused by the cab cap gap.
Cause a slight down wash promoting attachment sooner.
my tuft test video showing attached flow Downstream

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Julian this looks to be a proper place for you to apply the eroding clay technique.

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Here's a picture of the inverse of eroding clay. Additive aerodynamic sculpting.


Pay close attention to the upper screw holes in a license plate that allowed are passed through the bumper due to the pressure differential the scallops and the shape of the entries.