On Fri, 28 Mar 2008 12:36:19 -0600, cavelamb himself
wrote:
clare at snyder dot ontario dot canada wrote:
Look up "air tabs" Vortex generators to fit transport trucks and RVs.
They DO work.
Interesting. I just posted this one to rec.aviation.homebuilt this
morning...
went looking for some "how it works" articles...
with varying degrees of sucess.
These were the more interesting
http://en.wikipedia.org/wiki/Vortex_generator
http://www.microaero.com/
http://www.zenithair.com/stolch801/d...vg-design.html
Chris Heintz 701 VG page
http://www.aerospaceweb.org/question...cs/q0009.shtml
Interesting description...
http://www.mitsubishi-motors.com/cor...004/16E_03.pdf
Mitsubishi is using them on automobiles now!
Interesting paper.
http://www.avweb.com/news/reviews/182564-1.html
The use of vortex generators is nothing new. First used in England, VGs
have been used on transport jets for decades, and on bizjets since Bill
Lear invented them. But historically they were used as an aerodynamic
"band-aid" to deal with localized mach buffet problems at the high end
of the airspeed envelope. MacDonnell Douglas engineers would routinely
scoff at the VGs on Boeing jets and brag, "see, we don't need those
things because we got our aerodynamics right in the first place."
http://cas.umkc.edu/physics/sps/proj...ex/vortex.html
Vortex rings - like smoke rings?
Dolphins make air vortex rings in the water and play games with them.
http://www.nasa.gov/centers/langley/.../Micro-VG.html
NASA paper about micro VGs on the FLAPS (way cool)
http://home1.gte.net/pjbemail/VortexGen.html
VGs used to enhance top speed of ice skaters???
http://www.flxsys.com/Applications/A...x%20Generator/
ACTIVE (dynamic) VGs developed for the Air Force?
http://www.physorg.com/news85159467.html
Silly things are even being used under water...
Richard
Look at airtabs.com
The RV trailer shown is my buddy's trailer.
We did a test, using my Corvair Aircraft engine to produce the wind,
to see how much difference there was. Without the airtabs, ropes tied
to the back corners of the trailer crossed behind the trailer and
snapped against the back of the trailer viciously. With the airtabvs
the roaps streamed out over 15 feet straight behind the trailer. I was
IMPRESSED.
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