Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Super Sonic Flight

  1. Oct 23, 2005 #1
    If a sound source flying at a speed faster than a sound, it will produce a Mach cone and shockwave, like the figure. But what will happen if the frequency changes continuously during the flight?

    thanks for help!
     

    Attached Files:

  2. jcsd
  3. Oct 23, 2005 #2

    Tide

    User Avatar
    Science Advisor
    Homework Helper

    What frequency are you talking about?
     
  4. Oct 23, 2005 #3
    The frequency of the emitted sound from the source.
     
  5. Oct 23, 2005 #4
    I'm not understanding the question.
    But, if you are looking for a way to mitigate the shock wave, I read somewhere about Air-Force experiments that ionized the surrounding air while in-flight and thus affected the formation of the shock wave.
     
  6. Oct 23, 2005 #5

    russ_watters

    User Avatar

    Staff: Mentor

    A supersonic shock wave is not the sound of the airplane, it's a pressure wave pushed ahead of the plane by the wings, nose, etc. And, afaik, since it's a shock, it doesn't really have any frequency.
     
  7. Oct 23, 2005 #6

    Tide

    User Avatar
    Science Advisor
    Homework Helper

    Actually, it has a very broad spectrum of frequencies. (A temporally narrow pulse has a very broad Fourier transform and vice versa.)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Super Sonic Flight
  1. Flight of a pencil (Replies: 15)

  2. Supersonic Flight (Replies: 2)

  3. No sonic boom? Why not? (Replies: 30)

  4. Arrow Flight (Replies: 3)

Loading...