What is the range of critical speed
Answers
Answer:
km/ hr is the range of critical speed
Answer:CRITICAL SPEED RANGE. -is the range of speed at which resonance may occur. -Resonance is a phenomenon experienced when the engine's operating frequency coincides with the natural frequency of the hull which results in vibrations of higher amplitudes than normal which is very dangerous
Explanation:
Critical speed is the speed at which unwanted vibration happens when a vessel is rotating. ... Running a mixer in excess of the critical speed can cause destructive mechanical vibrations. Critical speed is the speed at which unwanted vibration happens when a vessel is rotating.
All rotating shafts, even in the absence of external load, will deflect during rotation. The unbalanced mass of the rotating object causes deflection that will create resonant vibration at certain speeds, known as the critical speeds. The magnitude of deflection depends upon the following:
(a) stiffness of the shaft and its support
(b) total mass of shaft and attached parts
(c) unbalance of the mass with respect to the axis of rotation
(d) the amount of damping in the system
In general, it is necessary to calculate the critical speed of a rotating shaft, such as a fan shaft, in order to avoid issues with noise and vibration