Research Article

Research on the Dynamic Erosion Wear Characteristics of a Nozzle Flapper Pressure Servo Valve Used in Aircraft Brake System

Table 4

The service life under erosion wear.

ItemValue

Oil contamination level6789
Dynamic erosion rate Ed (kg/(m2s))2.7452 (×10−9)5.490 (×10−9)1.0981 (×10−8)2.1962 (×10−8)
Erosion length (mm)0.011
Number of flight takeoff landing M500
Maintenance number ni10
Life under single oil level (flight takeoff)357291786689324466
Erosion distance (μm)1.53943.07876.15750.2244
Service life (flight takeoff landing)15091