Velocity
±2mm
±50mm/s
±10m/s
2
±1mm
±25mm/s
1 Hz 10 Hz 100 Hz
Frequency
Zone Ι: Acceptable
Zone ΙΙ: Vibration will not damage the main engine, however,
under adverse conditions, annoying/harmful vibration
responses may appear in the connected structures
Zone ΙΙΙ: Not acceptable
078 81 27-6.1
Fig.17.05.02: Vibration limits
Vibration Limits Valid for Single Order Harmonics