Fan system power design has been minimized via optimal matching of interdependent transportation path losses, component air pressure drops, and
fan wheel type/size.
As a matter of fact, according to the
fan wheel theory (McPherson n.d., see Equation 10.13), the gain in velocity pressure of a
fan wheel is the difference between the outlet and inlet pressures:
Dominated by muscular wheel arches, dynamic air intakes and a 'pulpit-like' cockpit the 918 RSR painted in distinctive "liquid metal chrome blue" has a visible
fan wheel between the ram air intake tubes and a rear spoiler with RS Spyder dimensions.
He managed to hang on and to get back to earth with no bones broken, and we watched helplessly as the tower crashed to earth, bending the big
fan wheel like a pretzel.
Steel tried to correct the problem by manually balancing the
fan wheel shafts during maintenance outages, but the fans would continue to vibrate, typically at 3 to 4 mils, although sometimes at as much as 5 mils, recalled James Meinert, maintenance shift manager.
Features of the system include a high-efficiency cyclone and pleated cartridge filter, neutral vane inlet, a 35-gal dust bin and an aluminum
fan wheel, which Oneida says does not spark.