blade frequency

blade frequency

The number of times fan blades pass a given point per second; equals the number of blades in the fan multiplied by the fan speed in revolutions per second.
References in periodicals archive ?
In the area closing to the boundary, nevertheless, its flow pattern is more complicated and subjected to the boundary condition; the theory is not applicable to this situation any more, and the dominant frequency is the blade frequency.
From the frequency graph of monitors S1~S6 in Figure 10, it is figured out that the dominant frequency of monitors close to blade is 275 Hz and that in the center region is doubling blade frequency. This can be explained by the Kubota theory as analyzed in Section 2.2.
The change of the blade frequency also results from erosion and the corrosion.
Blade frequency. The use of VFDs creates a situation where a wide variety of blade frequencies can potentially be excited.
At that time, disc assemblies were analyzed with Rayleigh's or Dunkerley-Southwell's approach, simple analytical methods that either overestimated or underestimated the real blade frequency, respectively.