Spiroid winglets

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Joined: Sun Feb 15, 2004 8:31 pm

Spiroid winglets

Post by Ciwai » Wed Oct 27, 2004 4:04 am

Browsing through an aviation magazine, I chanced upon a term I hadn't heard of before, spiroid winglets. Typed in google and got this cool shiite:


Click on the pictures, the tips are actually looped surfaces.

Anyway, I was always curious why the intersection of endplates and wing is always consistently an abrupt perpendicular abutting of two surfaces, instead of something with smoother contours. I suppose it maximizes surface area of the wing, but it seems like it might be an area that teams could exploit for drag reduction.

Joined: Tue Jan 06, 2004 11:42 pm
Location: San Diego, CA

Post by West » Wed Oct 27, 2004 5:07 am

BAR's winglet probably works along the same lines.
Bring back wider rear wings, V10s, and tobacco advertisements

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Joined: Sat Dec 28, 2002 10:36 pm
Location: Covilhã, Portugal (and sometimes in Évora)

Post by Monstrobolaxa » Wed Oct 27, 2004 1:09 pm

I've know for some time now about these wing tips (spiroid-winglets/wing tips) but according to the document it reduced drag more then 10%.

There is another kind of winglet called the "minex" don't know if it is correctly written but in wing tunnel testing it reached up to 25% reduction in drag! This "minex" winglet is more or less a toilet paper tube with cuts on the side so that the induced drag (wing tip drag) enters the tube and inside the tube the vortex is reduced.....if I find a link I'll post it

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Joined: Thu Nov 13, 2003 10:29 pm
Location: Italy

Post by Lightning McQueen » Thu Oct 28, 2004 7:47 am

Hi Monstro,

if you are interested there is a website about
"minix" winglet.

Here is the link : http://www.minix.fr/

Is both in English and French.
Hope that you find it interesting.