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Author Topic: is there a second sonic boom upon reaching mach 2?  (Read 3557 times)

Offline Emilio Romero

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Hello, when a plane reaches the speed of sound, and breaks the sound barrier there is a loud bomm... I would like to know if there is a second sonic boom upon reaching mach 2

Thank you
Emilio


 

Offline wolfekeeper

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is there a second sonic boom upon reaching mach 2?
« Reply #1 on: 27/04/2010 02:37:10 »
Not exactly... there's ONE continuous sonic boom from the time that an aircraft reaches the sound barrier to the time that it slows down again.

You only *hear* it though when the aircraft flies past you (actually slightly after it has flown past, it takes a while for the sound to reach the ground.)
 

Offline daveshorts

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is there a second sonic boom upon reaching mach 2?
« Reply #2 on: 27/04/2010 08:42:04 »
Yes the sonic boom is like the bow wave of a ship which only starts to occur at a certain speed. So if you are going faster than the speed of sound there is always a sonic boom. If you go faster the booms become more intense but are otherwise the same. In fact you often get one sonic boom from the front of the aircraft and another from the back, which is where the double boom comes from.
 

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is there a second sonic boom upon reaching mach 2?
« Reply #2 on: 27/04/2010 08:42:04 »

 

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