Trajectory Similarity Matching and Remaining Useful Life Prediction Based on Dynamic Time Warping

Table 2

Engine sensor data description.

Symbol	Description	Units
s2	Total temperature at low-pressure compressor outlet	°C
s3	Total temperature at high-pressure compressor outlet	°C
s4	Total temperature at low-pressure turbine outlet	°C
s7	Total pressure at high-pressure compressor outlet	kPa
s8	Physical fan speed	rpm
s9	Physical core speed	rpm
s11	Static pressure at high-pressure compressor outlet	kPa
s12	Ratio of fuel flow to Ps30	—
s13	Corrected fan speed	rpm
s14	Corrected core speed	rpm
s15	Bypass ratio	—
s17	Bleed enthalpy	—
s20	High-pressure turbine coolant bleed	kg/s
s21	Low-pressure turbine coolant bleed	kg/s