Deformable bearing seat

In a housing having at least one bearing assembly, the combination comprising:

• a deformable seating surface in said housing having a predetermined spheroidally contoured surface when said housing is in an undeformed mode, said seating surface being deformable to a predetermined spherically contoured surface when said housing is in a deformed mode;
• and
• a bearing race in said bearing assembly, said bearing race having a first surface with a spherical contour substantially identical to said predetermined spherically contoured surface, said first surface engaging said deformable seating surface when said housing is in said undeformed and deformed modes.

In a thrust generating gas turbine engine having a blade and ring assembly mounted for rotation about a first axis, said assembly including a plurality of blades each rotatably secured to said ring for rotation about a second axis, a plurality of bearing assemblies each disposed adjacent one of said blades, means for securing said plurality of blades to said ring, the combination comprising:

• a deformable seating surface associated with one of said bearing assemblies, said seating surface having a first predetermined spheroidally contoured surface when said ring is in an undeformed mode;
• and
• a bearing race in at least one of said bearing assemblies, said race having a first surface engaging said deformable seating surface, said seating surface in engagement with a first portion of said first surface when said ring is in an undeformed mode, said seating surface deformable to a second predetermined spherically contoured surface when said ring is in said deformed mode, said spherically contoured surface engaging a second portion of said first surface.