The friction pair between swash plate and slipper is very important in the aeronautical fuel piston pump

and has great effect on the service life of the piston pump.Variation laws of the film thickness with rotor angle

angle of swash plate

pocket pressure and pressing force were obtained.The differential equations of the variation of the film thickness were established

hence the dynamic law of the film thickness in one period was further obtained.By the calculation method of the film thickness

the lubrication condition in one period between swash plate and slipper can be obtained

offering a theoretical basis for the design of the slippers in aeronautical fuel piston pump.