Numerical Simulation and Experiment on Impulse Noise in a Small Caliber Rifle with Muzzle Brake

Figure 7

Sound pressure level varying with time and the corresponding one-third octave frequency spectrum at different measurement points. (a) P-T at point 1. (b) P-T at point 5. (c) P-T at point 9. (d) SPL-f at point 1. (e) SPL-f at point 5. (f) SPL-f at point 9. 1: initial shock wave; 2: muzzle blast; 3: impulse noise wave.

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