sonic boom?

Question

If a plane is travelling faster than the speed of sound but emits no sound. do you still get the sonic boom

Answer 1

If anything travels faster than the speed of sound, you'll get the sonic boom, regardless of how much or little noise the craft makes. The sonic boom is caused by a collision in air resistance. Basically, the faster you travel, the more resistance that you need to break through until at the speed of sound, the resistance is so high that you create an explosion of particles, which creates the bang. It is similar to thunder. When two differing pressures collide, you get the thunder, the particles create static energy (electricity) and the charge creates the lightning. An aircraft won't create enough static to create lightning but does have such an impact on the air to create the thunder (Sonic Boom). As a final note, when flying through clouds at the speed of sound and above, the aircraft will cause the cloud to break (create rain) thus soaking everything below it.

Answer 2

Yes, the fact that an object is traveling faster than the speed of sound means that it is creating a sonic bow wave because the air cannot flow fast enough past the leading edge and is therefore compressed. The sonic boom is usually heard sometime after the plane has passed and the delay is due to the distance between the observer and the plane. It is usually about 5 sec per mile distant.

Answer 3

Any object which moves that fast in the atmosphere creates sound by friction with the molecules in the air.
The only way to avoid sound would be to have zero friction which is very hard to achieve because you will have to eliminate all turbulances created by the plane.
Unfortunatly this can not happen in real world,
having said that if your plane was flying above the atmospher, you could argue that it is still going faster than what the speed of sound is (in the atmosphere 330ms-1 at 1bar) however there is no sound simply because there is no molecule in space to support and carry accoustic waves.

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Answer 4

Yes. Shock waves develop at the nose and tail of the aircraft. When these waves pass you you hear them as a double boom.

Answer 5

Yes. It still creates the shockwaves.
Think about a whip. When it cracks, thats a small version of the same shockwave. It doenst create any sound itself though does it.

Answer 6

if anything is faster than the speed of sound yes

Answer 7

Once a plane breaks the sound barrier there is no noise after that.

Answer 8

then its travelling faster than 330 m/s like cooncorde and you'll hear it