Multi-Spool Bearing
Multi-spool bearings are intershaft bearings connecting coaxial rotors running at different speeds.
Figure 3-13:
Multi-spool bearing.
A connection between the rotors is established by adding a spring-damper system with equivalent stiffness and damping coefficients between the corresponding surfaces on both the shafts. Usually the radial deformation in the shafts is not significant when compared to the overall lateral displacement. Therefore, only average lateral displacements and average tilting rotations in local directions are used for formulating the connection.
