[nasa13]

http://www.qsl.net/n5mya/aero.html

Tuuletunnel, kus ka NASCAR autosid käiakse sättimas

The National Research Council operates two other wind tunnels in Ottawa
besides the 6.5 foot by 10.0 foot facility we used, including this massive
30 foot by 30 foot tunnel near the city\'s airport (shown). A 9500 horse-
power DC motor turns an enormous fan (you can walk between the blades) at
225 rpm to generate a hurricane of wind. The air circulates in a huge
horizontal loop, which inside resembles some sort of alien cathedral.
Among the clients for the NRC tunnel are NASCAR teams, which consider
the approximately $1530 per hour charge to be a bargain.