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1376. I live under the flight path that leads into Sydney's International/Domestic Airport. As planes fly over, a sound follows them (3-4 seconds) like air folding in on itself. A slurping sound similar to sucking air in through your cheeks. This phenomenon does not happen all the time, but seems to happen when overcast. Any clues as to what is happening? -- TA, Sydney, Australia
The sound you hear may be related to the vortices that swirl behind a plane's wingtips as it moves through the air. These vortices form as a consequence of the wing's lift-generating processes. Because the air pressure above a wing is lower than the air pressure below the wing, air is sucked around the wingtip and creates a swirling vortex. The two vortices, one at each wingtip, trail behind the plane for miles and gradually descend. You may be hearing them reach the ground after the airplane has passed low over your home. If someone reading this has another explanation, please let me know.
Originally posted by BigMoser
Is there any way that the poles were some how brought into a turbulence or some sort of force to rip them out of the ground without being hit at the angle the flight recording animation shows? (That is, if this animation holds true)
Pentagon Flight Recorder
That is the link to the animation to the flight recorder ^^^^^
Originally posted by Lomillialor
Given all that, what is so hard to believe that a few light poles might have been clipped as the jet struck the Pentagon?
Originally posted by Slap Nuts
Originally posted by Lomillialor
Given all that, what is so hard to believe that a few light poles might have been clipped as the jet struck the Pentagon?
It is hard to beleve because planes have hit light poles in the past at much lower speeds and the wings were severed.
It is also hard to believe that pieces of the jet wings would not have come off upon impact with said poles.
It is also hard to believe because there were cameras from:
VDOT
Hotel
Gas Station
and
The Pentagon
Which would CLEARLY show this, yet still, even after the proper FOIA channels have been followed they REFUSE to release htese videos.
There are three reasons why it is hard to believe.
Shall I continue?
Originally posted by Lomillialor
Anyway, yes, let's continue. If someone manually brought down the light poles before the jet strike, then why didn't anyone see them although it was happening right on major thoroughfare at or near rush hour?
Originally posted by Lomillialor
And as I said in that other thread, precedents do not establish rules. Rather, precedents are useful to establish EXCEPTIONS to the rule.
Originally posted by Lomillialor
It is reasonable to assume and believe that jets can indeed knock down poles like this without crashing or sheering off wings. I would be surprised if in al the history of aviation that this hasn't hapened before (planes knocking things down without crashing or sheering off wings).
[
That is not my point to speculate.
Find me a source for a jumbo jet hitting a pole with it's wing and not breaking off the wing.
Originally posted by Lomillialor
The source I refer to is the Pentagon on 911.
Originally posted by Astygia
Slap Nuts -
I agree there's inconsistancies, but what other plane do you thing knocked all the poles over? Either a heavier plane knocked 'em over and flew away (no evidence or reliable witness accounts of this), or no aircraft at all knocked them over and they were positioned that way (I'm pretty sure someone would have noticed that).
Stuff like this is where it starts getting into the IPU (invisible pink unicorn) logic.
Originally posted by Slap Nuts
Originally posted by Astygia
Slap Nuts -
I agree there's inconsistancies, but what other plane do you thing knocked all the poles over? Either a heavier plane knocked 'em over and flew away (no evidence or reliable witness accounts of this), or no aircraft at all knocked them over and they were positioned that way (I'm pretty sure someone would have noticed that).
Stuff like this is where it starts getting into the IPU (invisible pink unicorn) logic.
That is not what I meant at all. I do not have a list of airframes that might be able to withstand those impacts SO, I will not say NO PLANE COULD HAVE DONE THAT.. I am simply leaving the door open.
As far as tht 757 or any othe Boeing commercial jet liner airframe goes, history tells us it is highly unlikely the plane could survive those impacts.
Originally posted by Astygia
Posted these in the Lloyd thread.
Here's a video of a remote controlled passenger plane shearing the tops from several hundred feet of trees before it eventually goes down.
This one goes through some fence posts...
This private plane's hit the ground and didn't even break, just buckled.
Originally posted by dipsothedrunk
I don't think flimsy tops of trees or fence posts can be compared to steel posts with foundations! Good links though, thanx for posting them - would be interested in seeing aircraft hitting any thing more substantial, gonna look now.
Originally posted by Astygia
Posted these in the Lloyd thread.
Here's a video of a remote controlled passenger plane shearing the tops from several hundred feet of trees before it eventually goes down.
Originally posted by Slap Nuts
Like I said, I am not going to speculate on how the poles got in the condition they were in. That is not my point to speculate.
I have found you a source where it hit a pole and the wing broke ioff.