Why do passing trucks suck instead of blow?
Nope, it's not the first line of a joke or a rhetorical question. I would expect a passing truck or bus to be pushing a wave of high pressure air in front and beside, but I've noticed time and agai...
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It's called Bernoulli's principle. It's why airplanes can fly, and why NASCAR drivers and cycle racers can draft. Lots of web pages describing this effect in both layman's terms and in scientific and mathematical terms.
For us towing trailers, it's our rig getting caught in the air flow around the semi truck/trailer that's trying to flow back to where it was.
Sorry, I didn't your post right away! Didn't mean to repeat you.
For us towing trailers, it's our rig getting caught in the air flow around the semi truck/trailer that's trying to flow back to where it was.
Hiker_01 wrote:
I'm not an expert, but I would guess that fluid dynamics are at play here. The air flowing around the truck/bus is traveling at a much faster speed than the rest of the air. Bernoulli's principle states that the faster a fluid (air) travels, the lower the pressure. This is how old time carburetors worked, and same reason why you have lift on airplane wings.
Sorry, I didn't your post right away! Didn't mean to repeat you.
