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Purdue Simulations

purdue video simlulation frame image


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9/11 Attack Simulations Using LS-Dyna
Phase 4 Preview: Post-processed simulations rendered using 3DSmax

Core view in context Fire ball before exit 9/11 Attack Simulations Using LS-Dyna

Interior with fire ball Post-processed simulations rendered using 3DSmax 9/11 Attack  Straight view, no fire Phase 4 Preview: Post-processed simulations rendered using 3DSmax September 11, 2001

Debris exiting Post-processed simulations rendered using 3DSmax 9/11 Attack Simulations Using LS-Dyna  Facade damage September 11 2001 9/11 Attack Simulations Using LS-Dyna


September 11, 2001
9/11 Attack Simulations Using LS-Dyna
Phase 4 Preview: Post-processed simulations rendered using 3DSmax
Core Team:  Voicu Popescu, Paul Rosen, Christoph Hoffmann, Ayhan Irfanoglu

Purdue Simulation and ASCE report Pentagon 9/11

The building is between 921 922 feet long , and the distance between column centers is 10' to 10' 1" .
 The height to the roof edge is 71', and 77 to 78' to the crest of the roof gable.

pentagon ASCE report septmber 11

In the sim shown below, the plane is quite low to the ground. It apparently hit several light poles,
 indicating that it stayed paralel to the ground for quite a long distance. (it did not nose dive from above)

pentagon crash graph september 11 image simulation

pentagon 9/11 simulation purdue pentagon crash simulation team 9/11 Perdue asce report

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Here the cable reels are shown as black circles, the wing and lower hanging engine would have had to clear these cable spools which stood as tall as 7 ft.
The fuselage and wings are shown to be entering on the ground floor only.

pentagon crash simulation team 9-11 Purdue pentagon purdue simulation team september 11 9

Why did they not take the tail into consideration?
The top of the tail rudder would have hit the 3rd floor even if the plane was at ground level. (which it could not have been,
 the engines would have left gouges in the grass which we know were not present)


pentagon 911 ASCE report column damage simulation

engine hit between column 16 and 17 pentagon crash site entry point photo

Notice here the entry point.
The "wing root" where the wing meets the fuselage is one of the strongest parts of the plane. This should have hit right where the word "column 15" and underlying arrow are.
This particular camera angle shows the approximate angle of attack.
The official report indicates that the plane hit at an angle, with the right wing higher.
If this is so, why is all of the damage on the ground floor?

Notice in this sim, the plane is striking between the first and second floors.
The fuselage would have had to travel through the floor of the second story.
The sim showing the columns being struck, does not take this into account, it only shows the bottom floor columns and disregards the concrete and steel floor structure.

pentagon simulation Purdue 9/11

simulation pentagon plane crash simulation purdue september 11

Here is a compostie of what a 757 should look like against the building.
pentagno sim plane wall size comparison 757 747

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pentagon composite showing structural damage. 911 sept 11 9 facade

Here is a composite showing structural damage.
The columns are spaced 10 ft. apart.
What caused the damage to the wall on the second floor ( the top red line)?
Why is there no damage inbetween the main entrance hole and the damage to the right which is over 30 ft. away?
The Purdue sim shows the wing entering the bottom floor.

pentagon sim hole column damage smoke fire 9 11

pentagon hole hi resolution image photo september 11

pentagon hole 911 wing - columns purdue crash simulation team s kilic

Here again they are only showing ground floor damage, with the wings paralel to the ground.

Pentagon Attack 9-11 review

Pentagon Attack Damage - 9-11 Review

Response to snopes pentagon "rumor" urban legend 9/11

9/11 Pentagon debris missile? or contractors trailer

Pentagon Attack Cctv Video - 9-11 Review
Photos of the actual structure damage to the columns...

damage photos of the pentagon

more photos

Anaysis of the angle of attack, considering the height of the wings, clearance of the generator, and light poles struck.
757 specifications

Showing the main probelms with the idea that a 757 hit the Pentagon.
investigate 9/11

pentagon graphics

no 757 hit the pentagon

Chandra Levy Saves GW Bush -Rudi Giuliani + 9/11


illustrations.pdf American Society of Civil Engineers.
Pentagon Building Performance Report pentagonVis2003.mpeg


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