[en] A shock absorber with lubricated bearings for an aircraft landing gear includes a piston that is received in a cylinder, and an upper bearing fixed to the piston that slidably engages an inner surface of the cylinder. A lower bearing extends inwardly from a lower portion of the cylinder and engages an outer surface of the piston. The lower bearing has a center axis and defines an annular bearing surface configured to slidably engage the piston outer surface. The annular bearing surface has a first portion that extends circumferentially more than one hundred eighty degrees about the center axis at a constant radius, defining a circular annular segment. A second portion closes the circular annular segment and defines a shallow channel or pocket in the annular bearing surface. In some embodiments the lower bearing further comprises oppositely disposed frustoconical thrust portions.
Disciplines :
Aerospace & aeronautics engineering
Inventor :
HEIRENDT, Laurent ; University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB)
Hugh, Hugh H.T.; University of Toronto - U of T > Institute for Aerospace Science
Wang, Phillip; Safran Landing Systems Canada Inc.
Language :
English
Title (54) :
Lubrication mechanism design for aircraft landing gear bearings