« previous next »
Pages: [1]   Go Down

Author Topic: effects of sound wave fronts on cirrus clouds by Atlas rocket  (Read 4985 times)

0 Members and 3 Guests are viewing this topic.

Offline Michael Bath

  • storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 1,602
  • Gender: Male
    • Australian Severe Weather
effects of sound wave fronts on cirrus clouds by Atlas rocket
« on: 20 February 2010, 02:48:12 AM »
This was posted to Austpac list. Worth a look

Sonic Boom Meets Sun Dog 720p


Quote
This film is of an Atlas rocket penetrating a cirrus layer

One can see the effects of sound wave fronts on the local crystal
concentrations, and the orientations of the crystals are sufficiently
disrupted as to eliminate a 22 degree perihelion that was present.

Note that, contrary to the film's title, we are probably not seeing a
shock wave (NASA claims that the rocket did not go supersonic until 4
seconds after it passed the cirrus deck) but rather the intersection
of approximately spherical wave fronts with the cirrus.
Logged
Location: Mcleans Ridges, NSW Northern Rivers
Australian Severe Weather:   http://australiasevereweather.com/
Lightning Photography:   http://www.lightningphotography.com/
Early Warning Network: http://www.ewn.com.au
Contact: Michael Bath

Offline Paul D

  • Multi-vortex F1
  • *
  • Posts: 90
  • Gender: Male
Re: effects of sound wave fronts on cirrus clouds by Atlas rocket
« Reply #1 on: 20 February 2010, 10:01:34 AM »
Same event different angle different video -

http://science.nasa.gov/headlines/y2010/images/coolmovie/anna-herbst1.mov
(lower res)

Third video different angle

NASA SDO Launch

PD
« Last Edit: 20 February 2010, 10:19:48 AM by Paul D »
Logged

Offline Colin Maitland

  • Barrel tornado F4
  • *
  • Posts: 614
  • Gender: Male
Re: effects of sound wave fronts on cirrus clouds by Atlas rocket
« Reply #2 on: 20 February 2010, 03:02:59 PM »
Its like a rock hitting the surface of a lake creating the perfect ripple. Awesome footage. Also the vapour trail after it went supersonic is impressive.

Cheers

Col
Logged
Pages: [1]   Go Up
« previous next »