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Table 2
Calculated magnitudes of BFPF for a high speed train at speeds of 300 km/h.
| Ballast Aerodynamic Shape | Mass Range (g) | (BFPF) Ballast Flying Probability Factor (%) | |
|---|---|---|---|
|
|
|||
| Without track vibration | With track vibration | ||
| Flat | 0–50 | 87 | 97 |
| 50–100 | 51 | 79 | |
| 100–150 | 25 | 64 | |
| 150–200 | 8 | 58 | |
| 200–250 | 20 | 73 | |
| Semi–Spherical | 0–50 | 95 | 100 |
| 50–100 | 77 | 96 | |
| 100–150 | 56 | 84 | |
| 150–200 | 47 | 67 | |
| 200–250 | 58 | 74 | |
| Spherical | 0–50 | 100 | 100 |
| 50–100 | 89 | 98 | |
| 100–150 | 72 | 75 | |
| 150–200 | 61 | 56 | |
| 200–250 | 59 | 45 | |
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