Turbo engine comprising a damping fluid film for damping a guide bearing of a shaft of the turbo engine and method of adjusting the thickness of such a damping fluid film

A turbine engine comprising:

• a casing including an annular cavity in which is fitted a circumferential housing ring with an outer surface in contact with an inner surface of the annular cavity of the casing;
• a turbine engine shaft extending axially;
• a guide bearing for guiding the turbine engine shaft in the casing, the guide bearing including an inner circumferential ring rigidly connected to the turbine engine shaft and an outer circumferential ring fitted in the housing ring and gripping rolling members;
• a damping cavity, configured to receive a damping fluid to form a damping fluid film for damping the guide bearing, the damping cavity being delimited radially between an outer surface of the outer ring and an inner surface of the housing ring, the outer surface of the outer ring and the inner surface of the housing ring being conical surfaces;
• and
• means for adjusting an axial position of the housing ring relative to the casing, the adjustment means including a shim fitted removably to the housing ring.