Propeller Excitation of Longitudinal Vibration Characteristics of Marine Propulsion Shafting System

Table 1

Parameters of thrust bearing.

Parameter	Symbol	Value
Tilting pad
Inner radius (mm)	𝑟𝑖	165
Outer radius (mm)	𝑟𝑜	325
Central angle (rad)	𝜑	0.70
Number	𝑍	8
Supporting center
Radial coordinate (mm)	𝑟𝑝	245
Circumferential coordinate (rad)	𝜃𝑝	0.405
Lubricant oil
Density (km/m^3)	𝜌𝑜	890
Specific heat capacity (J/kg·°C)	𝑐𝑜	1922.8
Inlet temperature (°C)	𝑡0	35
Viscosity (Pa·s)	𝜇0	0.051