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General => Lounge => Topic started by: EricCoolCats on July 02, 2009, 03:22:12 PM

Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: EricCoolCats on July 02, 2009, 03:22:12 PM
Coolest. Photo. Ever.
Story: http://jalopnik.com/5305682/f+22-raptor-breaks-sound-barrier-on-camera

(http://cache.gawker.com/assets/images/jalopnik/2009/07/f22_raptor_supersonic_jalopnik.jpg)
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: tireshredder on July 02, 2009, 05:23:41 PM
New desktop photo time.

Always wanted to fly.  my bad eyes.
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: Thunder Chicken on July 02, 2009, 06:33:34 PM
Meh. Dougy Fresh's T-Bird will top it :hick:

obligatory "just kidding"
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: daminc on July 02, 2009, 06:59:34 PM
That's an awesome pic.
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: 50tbrd88 on July 02, 2009, 10:07:59 PM
That is awesome.  Wouldn't that be  near impossible to photograph an object travelling the speed of sound if you were at a stationary position?  That makes my head spin!!
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: daminc on July 02, 2009, 10:19:54 PM
I lived next to the Niagara Falls Airbase.
Used to watch the f-14, 15, and 16s do that from by bedroom window.
The freakin house would shake when they went mach, just past our house. They had to stop that when it got to populated.
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: baxo on July 02, 2009, 10:28:37 PM
the camera must be worth as much as the f-22 to be able to capture that
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: Cougar5.0 on July 02, 2009, 10:40:24 PM
That's cool - I want one :)
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: daminc on July 02, 2009, 10:44:38 PM
it's like the camera that mythbusters used in one of their episodes.
they needed some insanely high speed camera for something I remember
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: EricCoolCats on July 02, 2009, 10:53:03 PM
Well, sort of...the phenomenon occurs for a few seconds. Something to do with the water vapor around the permiter of the plane. Here's a rough idea from one of the commenters in the article:

Quote from: ShobhnaThisbe
The 'vapour cone' is correctly called a Prandtl Glauert Singularity (http://"http://en.wikipedia.org/wiki/Prandtl-Glauert"), and is caused by condesation via pressure changes, when complex aerodynamic bodies, like fighters, travel at transonic (mach 0.8 ~ 1.2) speeds. (complex because of pressure differences across wing sections, controls surfaces etc and engine intake and exhaust paths and temps) It's often mistakenly associated with breaking the sound barrier or sonic boom, which it is not. Local air-traffic at airshows is always restricted to sub-sonic.

So yeah...what he said. There you go. There's actually plenty of time to take the photo but you'd still need a very high shutter speed and a steady hand.

Here's a video that shows the phenomenon in action (also very frickin' cool):
http://www.youtube.com/watch?v=E2EQGrOpsA8
Title: F-22 Raptor Breaks Sound Barrier On Camera
Post by: daminc on July 02, 2009, 10:56:23 PM
I have to be honest, It's super cool seeing that in person when they fly by.
first you see it. then you hear it
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