JeffWright
Advanced Member
- Joined
- Aug 13, 2016
- Messages
- 34
I was debating trying to find a solar panel to use as a deflector. The 100 watt Renogy survived a rollover accident and still works so I can’t imagine why it wouldn’t work as a deflector.
This is an often over-looked very large factor.BlueSky said:I wonder if a wind deflector at the back of the camper would help. Deflect air flow down to the back surface of the camper to reduce the pressure drop back there. The back side of our campers has an awfully large surface area. Some semi-trucks have fold out panels that basically do the same thing.
Hmmm. Seems counter-intuitive when aircraft engineers go to great lengths to minimize vortexes with wingtip airfoils, etc. to improve efficiency. Admittedly a wing is slightly different from the square boxes we push down the road.BlueSky said:Found this, Airtabs... https://www.airtab.com/application-rv.htm
I think I will give them a try. Not terribly expensive, and I can probably use VHB tape to try them out.
Page 66 of the above link has a paragraph about the vortex generators. Excellent link, thank you!DavidinPhx said:You may want to nerd out to this:
https://ntrs.nasa.gov/api/citations/20120000497/downloads/20120000497.pdf
It’s NASA’s report on their research into truck aerodynamics …. I kid you not.
Also this: scroll down to post 248 for some real interesting graphics illustrating drag coefficients for various shapes and vehicle combinations. Searching this forum brings up some more real interesting stuff.
https://ecomodder.com/forum/showthread.php/full-boat-tail-trailer-gap-fillers-toyota-t-7839-25.html
DavidinPhx said:You may want to nerd out to this:
https://ntrs.nasa.gov/api/citations/20120000497/downloads/20120000497.pdf
It’s NASA’s report on their research into truck aerodynamics …. I kid you not.
Also this: scroll down to post 248 for some real interesting graphics illustrating drag coefficients for various shapes and vehicle combinations. Searching this forum brings up some more real interesting stuff.
https://ecomodder.com/forum/showthread.php/full-boat-tail-trailer-gap-fillers-toyota-t-7839-25.html
What improvement did you see?buckland said:I made mine out of 1/8" aluminum. 4" high.