Essential Information

[goldengoose]

I am not a fan of YouTube videos, but I thought that this one managed to convey in less than 7 minutes a remarkable amount of information indispensable for a rational discussion of the plane impacts:

http://www.youtube.com/watch?v=P...h? v=PhKrirlTw8c

[goldengoose]

Ryan Mackey commented:


The YouTube video you sent me isn’t bad, but misses a couple of things and has a couple of problems.

The bolt failures in the perimeter sections are the dominant failure in the collapse, but at impact there are also column fractures as well. Take a look at NCSTAR1-2B, 5.2.1; and especially Chapter 6 and 7 of NCSTAR1-5A, particularly pp. 109, 111, and 112; and the best is NCSTAR1-3C, Chapter 2.

The impacted columns were between 0.25 and 0.625 inch thickness according to NIST, and also varied in strength – see Table 2-2 and 2-4 in NCSTAR1-3C.

The video’s contentions that the Boeing outer wing spars “certainly wouldn’t be aluminum” and are “from Boeing military” are nonsense. I have no idea where that came from or why it was included. They were ordinary aluminum and composite construction, and the wingtips did very little structural damage as NIST clearly indicates. The heaviest “slicing” damage as opposed to punching out whole sections was where the engines impacted, for reasons that should be obvious.



Thanks,

Ryan Mackey

[abababba]

I am not a fan of YouTube videos, but I thought that this one managed to convey in less than 7 minutes a remarkable amount of information indispensable for a rational discussion of the plane impacts:

http://www.youtube.com/watch?v=P...h? v=PhKrirlTw8c

The link doesn't work for me, can you post it again?

[goldengoose]

The link doesn't work for me, can you post it again?


Yes, I noticed the problem shortly after I started the thread. I wrote to the poster on Screw Loose Change who drew my attention to the video. He replied:


hi ron,i have no idea why it says malformed url in the icke thread, it works fine in this thread, just tell them to search for 'wtc planes thru steel' on youtube.
i was searching on the net trying to find out what the wings were made of when i found this site claiming

Structure
Fail-safe structure. Conventional aluminium structure augmented by graphite ailerons, spoilers, elevators, rudder and floor panels; advanced aluminium alloy keel beam chords and wing skins; composites engine cowlings, wing/fuselage fairing and rear wing panels; CFRP landing gear doors; and aramid flaps and engine pylon fairings.
Subcontractors include BoeingMilitary Aircraft (wing fixed leading-edges)...

http://www.janes.com/aerospace/ c...oeing_767.shtml

stop the video at 3.31, you can see 7 columns the wing tips sliced through on the left and 4 columns cut through on the right.
if you click on 911TRUTHINATORS profile you can see that aluminum does indeed slice through steel in the background image of a ww2 kamikaze that pierced the hull of the USS hinsdale.
i will correct the video.