| 摘要 |
A compliant hybrid gas journal bearing (10) includes compliant hybrid bearing pads (12) having a hydrostatic recess (22) and a capillary restrictor (28) for providing a flow of pressurized gas to the bearing (10). The bearing (10) also includes an inner rim (32) adjacent the bearing pads (12), an outer rim (34) and a damper bridge (36) between the inner and outer rims (32, 34). The damper bridge (36) has an axial length (38) that is less than an axial length (40) of the bearing pads (12) and the outer rim (34) to form a damper cavity (42) on each side of the damper bridge (36). An integral wire mesh damper (62) is situated within the damper cavity (42) on each side of the damper bridge (36). Integral centering springs (46, 48) are located between the inner and outer rims (32, 34) to provide radial and rotational compliance to the bearing pads (12). The oil-free bearing design addresses the low damping and low load capacity characteristics that are inherent in present day compliant air foil bearing designs, while retaining the compliance to changes in rotor geometry. |
