Research Article
Numerical Simulation and Experiment on Impulse Noise in a Small Caliber Rifle with Muzzle Brake
Table 1
Average measured SPLpeak and OASPL of impulse noise.
| | SPLpeak (dB) | OASPL (dB) | Difference (dB) |
| Point θ = 90° | P1 | 152.38 | 126.26 | 26.12 | P2 | 151.21 | 124.83 | 26.38 | P3 | 150.44 | 123.34 | 27.10 | P4 | 150.35 | 121.82 | 28.53 |
| Point θ = 45° | P5 | 156.08 | 131.73 | 24.35 | P6 | 153.9 | 130.18 | 23.72 | P7 | 152.54 | 128.65 | 23.89 | P8 | 150.21 | 125.6 | 24.61 |
| Point θ = 0° | P9 | 161.63 | 132.77 | 28.86 | P10 | 159.85 | 131.01 | 28.84 | P11 | 157.38 | 130.08 | 27.30 | P12 | 156.11 | 129.2 | 26.91 |
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