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Originally Posted by PaulB2
Hard to do since the front face has a curve in it.
That's a pretty small car towing that trailer, heh.
Those roof racks are interesting, but we aren't seeing what is happening at the trailer sides, with a cross wind, etc.
Isn't it true that almost any trailer shape generates lift? The way those streamers look in those pictures are similar to what happens with a wing. Added speed of air over the top causes reduced pressure, which means lift...
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I think any lift generated is just a tiny fraction of the weight. We aren't talking lightweight aircraft, and we aren't talking aircraft speeds. An airstream is actually a heavy trailer compared to some of the stuff made today.
I used the sheetmetal ductwork for my edges. If it were a curved surface you could cut some relief cuts in it to let it bend. They could just be simple cuts almost all the way across just leaving an inch in the center intact then they will slide inside themselves like an armadillo skin as it makes the bend.