关键词: 航空发动机;压气机;旋转密封;迷宫密封件

Abstract: The influencing factors and correlations for flow parameter of straight-throughlabyrinth and slant labyrinth are investingated in experiments. The factors include the number andshape of restrictions,ratio of the restriction’s thickness to clearance,pressure ratio and flow direction.A number of valuable conclusions have been drawn on the basis of analyses. Empirical expressions forthe leakage are formulated. The agreement of calculation with experimental data is good.

Key words: Aircraft engine;Air compressor;Rotary sealing;Labyrinth seal