Abstract: The invention relates to a fluid film bearing, and more particularly the improvement of the load capacity and stability of such a bearing.The fluid film bearing comprises a housing 7 and several bearing sub-assemblies each comprising a flexible leaf 2, a leaf reinforcing element and a support bar (5), the sub-assemblies of the bearing being fixed to the housing by insertion of each bar 5 into a groove provided in the housing. The reinforcing element comprises an upper stiffener 3 secured to the bar of a sub-assembly, and a lower stiffener 4 secued to the bar of an adjacent sub-assembly, the two stiffeners 3 and 4 overlapping on at least one part of one of their faces. The bearing is advantageously provided with a preloading spring 6.The bearing is particularly useful in turbo engines, especially whey they form part of aircraft, more particularly military aircraft.

Abstract: The invention relates to a fluid film bearing and to a process for its production.The invention relates to a hydrodynamic fluid film bearing formed between a plurality of sheets (3) fixed to a casing (5) and a shaft (6) in rotation with respect to said casing. The invention has as an object to completely dissociate the control of the radial rigidity of the bearing in the startup phase and that in the rotational phase at working speed.A low rigidity, negligible or zero of the sheets (3) permits limiting the application forces of the sheets against the shaft and thus to reduce the wear upon startup of the bearing. After startup, the rotation of the shaft (6) at the interior of the sheet (3) causes a displacement of the sheets (3) which separate from the shaft (6) by the interposition of a hydrodynamic film of air. The new position occupied by the sheets (3) causes a return of the force of the sheets (3) by the restraining elements (4), as for example of leaf springs (40, 41, 42 or 43).

Abstract: A hydrodynamic bearing to support and guide a rotating machine shaft is disclosed. This bearing comprises, in the bore of a bearing body, an independent cartridge, designed to form the internal functional set of the bearing, said cartridge consisting of thin, curved foils fixed with respect to one another with overlapping parts, so as to make an independent unit having, firstly, an internal floating surface adapted to being placed around the shaft and to conditioning, during the rotation of the shaft, the formation of a fluid film between the shaft and the internal surface and, secondly, a peripheral external surface with a diameter corresponding to that of the bore of the bearing body. It further has means to immobilize the cartridge inside the bore in rotation and in internal translation. Furthermore, the external surface of the cartridge is surrounded with a flexible foil, fixed by one of its ends on an external generatrix of the cartridge, the other end being free.