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A sonic boom is the loud impulsive sound produced by any object moving faster than the local sound speed. Human-made sonic booms have existed for a...


= Encyclopedia Article; = Research Update
Figure 1.The Mach cone. Here c0 is the sound speed, V0 is the aircraft speed, and ?t is the elapsed time from the emission time to the observation time.
From update 'Focused sonic booms'
Figure 2.Principle of focused sonic boom. Color-level inset displays local pressure field with pressure peaks in red and troughs in blue.
From update 'Focused sonic booms'
Figure 3.Three-dimensional view of numerical simulation of nonlinear Tricomi equation, showing transformation of an “N” wave into a “U” wave. 1 km = 0.62 mi. 100 Pa = 1 mbar = 2.1 lb/ft2.
From update 'Focused sonic booms'
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