12 Apr
2006
12 Apr
'06
8:28 p.m.
In jet engines, there are series of blades in the fan. Each stage is composed of a rotating blade and a stationary blade. Often the numbers of blades on the rotor and stator are different primes, or at least coprime, in order to reduce resonance from one blade to the next. Kerry Mitchell -- lkmitch@gmail.com www.fractalus.com/kerry