Quote:
Originally Posted by Sven7
I don't remember what the actual numbers would be, but the smaller the scale you get, the faster it has to go to get reliable results. I figure before you could get reliable results from a Matchbox car, it would break the sound barrier and melt the tires at their axles.
Interesting way to test it, but I really would not trust the results.  |
If a MATCHBOX car was 1-50th-scale,they'd require 50X a normal critical Reynolds number velocity of 1:1 scale,or,50X 20 mph,or 1,000 mph for the wind tunnel.
And then compressibility effects would ruin the whole thing.Only a pressurized tunnel could do the work.
