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The meanings of C-MAPSS data sources_
| Description | Symbol | Units |
| Total temperature at the fan inlet | T2 | °R |
| Total temperature at the LPC outlet | T24 | °R |
| Total temperature at the HPC outlet | T30 | °R |
| Total temperature at the LPT outlet | T50 | °R |
| Pressure at the fan inlet | P2 | Psia |
| Total pressure in bypass-duct | P15 | Psia |
| Total pressure at the HPC outlet | P30 | Psia |
| Physical fan speed | Nf | rpm |
| Physical core speed | Nc | rpm |
| Engine pressure ratio (P50/P2) | Epr | |
| Static pressure at the HPC outlet | Ps30 | Psia |
| Ratio of fuel flow to Ps30 | Phi | PPS/psi |
| Corrected fan speed | NRf | rpm |
| Corrected core speed | NRc | Rpm |
| Bypass ratio | BPR | |
| Burner fuel-air ratio | farB | |
| Bleed enthalpy | bleed | |
| Demanded fan speed | Nf_dmd | Rpm |
| Demanded corrected fan speed | PCNR_dmd | Rpm |
| Coolant bleed (HPT) | W31HPT | 1bm/s |
| Coolant bleed (LPT) | W32LPT | 1bm/s |
| The total temperature at the HPT outlet | Parameters for calculating Health Index | |
| Fan stall margin | SmFan | |
| LPC stall margin | SmLPC | |
| HPC stall margin | SmHPC |
Description of FD001 datasets_
| Dataset | CMAPSS (FD001) |
| Training engine | 100 |
| Testing engine | 100 |
| Working condition | 1 |
| Fault modes | 2 |
The evaluation metrics_
| Model | MSE | RMSE | R2 | |
| Train set | CNN-1D | 459.5114 | 21.4362 | 0.7461 |
| Test set | 735.5647 | 27.1213 | 0.5707 | |
| Train set | DT | 567.8965 | 23.8305 | 0.6761 |
| Test set | 837.1339 | 28.9332 | 0.5588 |
CNN-1D structure_
| Layer (type) | Output Shape | Param # |
|---|---|---|
| conv1d (Conv1D) | (None, 23, 32) | 96 |
| flatten (Flatten) | (None, 736) | θ |
| dense (Dense) | (None, 64) | 47168 |
| dense_1 (Dense) | (None, 1) | 65 |