Originally Posted by scott_4508
jet engine's rev in the area of 30,000 rpm....my car redlines at 8900 rpm, I'm willing to bet that isn't an accurate fan reading. could be wrong...
I work jet engines all the time and the 30,000 rpm is not technically correct. The P & W JT8D engines on the Boeing 727 series only spin around 14,000 rpm at 100% power. How fast a jet engine can turn depends on the diameter of the turbine. It can not break the sound barrier. The larger the turbine diameter the slower it has to turn. The APU (auxiliar power unit) in the Boeing 727 Turns around 35,000 rpm, but it only has a 8" turbine.
Smaller fans can turn faster rpm's, but the 60K and 128k
for computer fans does sound kind of high.