References of "Wang, Phillip"
     in
Bookmark and Share    
Full Text
See detailLubrication mechanism design for aircraft landing gear bearings
Heirendt, Laurent UL; Hugh, Hugh H.T.; Wang, Phillip

Patent (2018)

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 ... [more ▼]

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. [less ▲]

Detailed reference viewed: 95 (7 UL)
Full Text
Peer Reviewed
See detailAircraft landing gear greased slider bearing steady-state thermo-elastohydrodynamic concept model
Heirendt, Laurent UL; Hugh, Liu; Wang, Phillip

in Tribology International (2015), 82(B), 453-463

This paper presents a steady-state concept model for studying the thermal behavior of a greased aircraft landing gear lower slider bearing. Structural damage has been reported as a consequence of ... [more ▼]

This paper presents a steady-state concept model for studying the thermal behavior of a greased aircraft landing gear lower slider bearing. Structural damage has been reported as a consequence of excessive heat generated by the high loads induced by rough runways on the bearings, and by the high sliding velocities of the piston. The goal of the model is to enable fundamental understanding of the frictional heat generation. The governing equations are adapted for grease flow and special attention is given to the underlying algorithm of the developed numerical framework used to efficiently solve the governing equations. The developed numerical code is validated against existing results. Numerical results indicate fundamental differences in fluid flow behavior between greased and oil-lubricated bearings. [less ▲]

Detailed reference viewed: 84 (1 UL)
Full Text
Peer Reviewed
See detailAircraft Landing Gear Thermo-Tribomechanical Model and Sensitivity Study
Heirendt, Laurent UL; Wang, Phillip; Liu, Hugh H.T.

in Journal of Aircraft (2014), 51(2), 511-519

A methodology for characterizing the thermo-tribomechanical response of an aircraft landing gear shock absorber is presented. Structural damage has been reported as a consequence of heat generated by high ... [more ▼]

A methodology for characterizing the thermo-tribomechanical response of an aircraft landing gear shock absorber is presented. Structural damage has been reported as a consequence of heat generated by high loads induced by rough runways on the shock absorber bearings and by the high sliding velocities of the shock absorber piston. Therefore, a model that reveals the characteristics of the thermal behavior, and identifies heat sources and sinks in the landing gear shock absorber is developed. The thermo-tribomechanical model framework is presented with representative development of each component. In addition, a sensitivity study of the maximum heat flux to variations of key input parameters is investigated. The numerical results indicate that the runway amplitude dominates the landing gear thermal response. [less ▲]

Detailed reference viewed: 137 (1 UL)