Mach cone
Quick Summary
A Mach cone is a conical pressure wave front produced by an object moving faster than the speed of sound. When an object travels at supersonic speeds, the pressure disturbances it creates are confined to a widening cone behind it. This phenomenon is related to the Mach number, which is the ratio of an object's velocity to the speed of sound in the surrounding fluid.123
If the Mach number is less than one, the flow is subsonic; if it's greater than one, the flow is supersonic, and shock waves can develop. The Mach angle is half the vertex angle of the Mach cone, calculated as the ratio of the speed of sound to the speed of the moving body. The audible result of this phenomenon at ground level is known as a sonic boom.342
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- sonic boom
…restricted widening cone (called a Mach cone). As the aircraft proceeds, the trailing parabolic edge of that cone of disturbance intercepts the Earth, producing on Earth a sound of a sharp bang or boom. When such an aircraft flies at a low altitude, the shock wave may be of sufficient…
Read More…restricted widening cone (called a Mach cone). As the aircraft proceeds, the trailing parabolic edge of that cone of disturbance intercepts the Earth, producing on Earth a sound of a sharp bang or boom. When such an aircraft flies at a low altitude, the shock wave may be of sufficient…
Read More - soundShock waves
…in three-dimensional space called the Mach cone. The Mach number is defined as the ratio of the speed of the aircraft to the speed of sound. The higher the Mach number—that is, the faster the aircraft—the smaller the angle of the Mach cone.
Read More…in three-dimensional space called the Mach cone. The Mach number is defined as the ratio of the speed of the aircraft to the speed of sound. The higher the Mach number—that is, the faster the aircraft—the smaller the angle of the Mach cone.
Read More