... with experimental data obtained from coast-down tests of a high-speed spindle supported on gas lubricated bearings, operated in air and in halocarbon R245fa at various pressures. The windage losses are first computed considering state-of-the-art laminar flow loss models in the gas bearings and an experimentally...

... coefficients may be affected by misalignment. bearing rotordynamics foil bearing gas bearing Gas foil bearings (GFBs) are currently used in several commercial applications, both terrestrial and aerospace. Aircraft air cycle machines (ACMs) and ground-based microturbines have demonstrated...