Device forming an aerodynamic radial bearing with sheets and method for manufacturing such a device

A method for manufacturing a device forming a foil air bearing comprising the steps of:

• machining a central bore extending along a longitudinal direction in a cylindrical sleeve, said central bore being delimited by an inner surface,
• machining at least one longitudinal notch in said cylindrical sleeve, which notch opens radially into said central bore,
• providing a connection surface between said longitudinal notch and the inner surface of said sleeve,
• forming a first peripheral inner bump lining from at least one metal bump foil equipped with radial projections, and having, at each end, a radial bump tongue, said bump lining forming a main curve carrying said projections arranged opposite said inner surface of said cylindrical sleeve to form an elastically deformable lining,
• freely housing each radial bump tongue in a longitudinal notch,
• forming a second peripheral inner lining, called the top lining, from at least one metal foil, called the top foil, said top lining forming a main curve arranged opposite said main curve of said bump lining to define an enclosure for receiving a shaft of a rotating machine, each top lining having, at each end, a radial top tongue, and
• freely housing each radial top tongue in a longitudinal notch.