Apr 26, 2014

Published Scientific Research on the Physics of the World Trade Center Airplane Impacts

·         Wierzbicki, T., Xue, L., and Hendry-Brogan, M. (2002). "Aircraft Impact Damage", The Towers Lost and Beyond - A collection of essays on the WTC by researchers at theMassachusetts Institute of Technology, Ed. Eduardo Kausel, pages 31-63.
"The  external  columns  were  impacted  at  a  very  high  speed  and  the  process  is controlled mainly by local inertia.  As the fuselage and wings cut through the steel facade of  the Towers, the affected portions of the column sheared off.  It was found that the momentum transfer between the airframe and the first barrier of external columns was responsible for most of the energy dissipated in this phase.  The energy to shear off the column constituted only a small fraction of that energy."

·         Wierzbicki, T., Teng, X.(2003). "How the airplane wing cut through the exterior columns of the World Trade Center", International Journal of Impact Engineering, Volume 28, Issue 6, Pages 601-625, 10.1016/S0734-743X(02)00106-9.
"Using the exact dynamic solution in the membrane deformation mode, the critical impact velocity to fracture the impacted flange was calculated to be 155 m/s for both flat and round impacting mass. Therefore, the wing would easily cut through the outer column."

·         Omika, Y., Fukuzawa, E., Koshika, N., Morikawa, H., and Fukuda, R. (2005). ”Structural Responses of World Trade Center under Aircraft Attacks.” Journal of Structural Engineering, Vol. 131, No. 1, Pages 6–15, 10.1061/(ASCE)0733-9445(2005)131:1(6).
"Based on the results of the analysis using a detailed finite element model, the damage situation of each structural component around impacted stories and the destroyed components were evaluated. As a result, the damage situation of the outer wall of WTC1 and WTC2 and the velocity reduction curve of the aircraft for WTC2 showed good agreement with the actual phenomena."

·         Karim, M. and Fatt, M. (2005). ”Impact of the Boeing 767 Aircraft into the World Trade Center. Journal of Engineering Mechanics, Volume 131, Issue 10, Pages 1066–1072, 10.1061/(ASCE)0733-9399(2005)131:10(1066).
"When the aircraft impacts the building at the top speed (240m/s) with a full fuel tank and the exterior columns have the original column thickness of 9.5mm., it is observed that all columns fail and the aircraft penetrates through the exterior wall. It was found that about 46% of the initial kinetic energy of the aircraft was used to damage columns. The minimum impact velocity of the aircraft to just penetrate the exterior columns would be 130m/s. It was also found that a Boeing 767 traveling at top speed would not penetrate exterior columns of the WTC if the columns were thicker than 20mm."

·         Sadek, Fahim. (2005) "Federal Building and Fire Safety Investigation of the World Trade Center Disaster: Baseline Structural Performance and Aircraft Impact Damage Analysis of the World Trade Center Towers." (NIST NCSTAR 1-2).
"Figure 7-73 provides the results of a careful comparison between the observed and calculated damage (from the base case analysis) on the south wall of WTC 2. The comparison includes the mode, magnitude, and location of failure around the hole created by the aircraft impact. The comparison indicates that the overall agreement with the observed damage was very good."

·         NIST NCSTAR 1-2B  "Analysis of Aircraft Impacts into the World Trade Center Towers (Chapters 1-8)", (Chapters 9-11), (Appendixes).

·         Kirkpatrick, S., Bocchieri, R., MacNeill, R., Peterson, B., & Sadek, F. (2006). “Modeling Methodologies for Assessment of Aircraft Impact Damage to the World Trade Center Towers.” 9th International LS-DYNA Conference, Pages 53-68.

·         Brachmann, Ingo. (2008) "On Efficient Modeling of High-velocity Fluid Solid Impact". (Doctoral Dissertation). Purdue University. ProQuest Dissertations & Theses No. 3373103
"The modeling technique used in this study was tested using data from tests of solids impacted by fluid (Chapter 2) and a concrete mass impacted by an F4 aircraft (Chapters 3 and 4). The results of the tests were all positive and provided the confidence to proceed on to the modeling of the WTC-1 building and the Boeing 767 aircraft. . . The cuts on the North facade of the WTC-1 seen in the photographs (Fig. 7.1 to 7.6) were similar to those determined by calculations for the two models of the impacting aircraft (Fig. 7.8). . . Calculations using the detailed model and the E-model provided satisfactory distributions of the damage observed on the damage to the north facade of WTC-1."

·         Irfanoglu, A., & Hoffmann, C. M. (2008). "Engineering Perspective of the Collapse of WTC-I.Journal Of Performance Of Constructed Facilities22(1), 62-67. 10.1061/(ASCE)0887-3828(2008)22:1(62)

·         Rosen, Paul, et al. (2008) "A high-quality high-fidelity visualization of the September 11 attack on the World Trade Center." Visualization and Computer Graphics, IEEE Transactions on, 14(4), 937-947. 10.1109/TVCG.2008.41

·         Hoffmann, Christoph, Ahmed Sameh, and Ananth Grama. (2009) "Simulation and Validation of Structural Models."

·         Irfanoglu, A. (2012). "Using Numerical Simulations and Engineering Reasoning under Uncertainty: Studying the Collapse of WTC-1." Computer-Aided Civil & Infrastructure Engineering27(1), 65-76. 10.1111/j.1467-8667.2010.00700.x

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  1. Does anyone have any documentation or proof
    of any of the 4 airliners allegedly hijacked that day,
    being real? that is did these airliners exist at all, and
    if so, where is the physical evidence?

    1. You ask a good question. As the primary radar tracks, the aircraft wreckage, the remains of the passengers and crews, the eyewitness accounts, and the amateur videos cannot satisfy the inquisitive twoofer, we must conclude that the planes were not real. Hollywood mogul David Angell, the creator of "Frasier," is still alive despite being killed when the plane he was onboard crashed into the north tower.

      The imaginary conspiracy paid the multi-millionaire at least a thousand bucks to abandon his palatial mansion and move to a three-room frame house provided by the witness protection program.

      No twoofer worth his salt sees a problem here.

  2. Hey Pomeroo. It is glaringly obvious that you don't exist. I have never seen physical evidence of your existence. No documentation, no witnesses, no image. Absolutely nothing real or even faked that even hints that you are a real person. Real people have traceable histories, official records, leave plenty of forensic evidence of their daily actions, routines, patterns, appearances, fingerprints, DNA samples that would positively identify you. There is not a single clue that can be possibly & irrefutably identified as you. The proof that you are the product of someone's imagination is incontrovertible.

  3. Are we really sure any of us exist? I mean, here I am, but what's the proof?

  4. If you still think 4 passenger airliners were hijacked and crashed 2 at W.T.C.,one in a field, and the pentagon you need your head examined.
    Look for the truth and you can find it.It was a Trillion dollar cover up.Then more trillions spent going to a phony war.For instance the pentagon the most guarded building on earth,with hundreds if not thousands of surveillance cameras can't show 1 frame of a 767 passenger plane crashing into it.Buy the way it's physical impossible to controll a plane of that size that low,it would stall long before it hit.And where's any wreakage of said 767?A cruise missile,yes!!False Flag,yes!American public lied to over and over,yes.There is a bigger more sinister plan in the works people!It's starting to show it's ugly face.

    1. Dr. Bagz, you don't care about looking for truth. You only care about blaming America for wars caused by our enemies. The reason the videos from the Pentagon don't show a 767 is because a 757 crashed into the Pentagon. "Can't control planes that size, that low?" Then how do the take of and land, "Doctor?" The debris there was from a 757! "Cruise missile," my ass! "False flag," bullshit! And then you wonder why the rest of us insult you people.

    2. Do you have any proof that planes take off and land?

  5. We might ask what kind(s) of planes were used and who flew them? The commercial carriers alleged to have struck the twin towers could not fly that fast (according to the companies that make them and pilots who have flown them) at such a low, atmospherically-thick altitude (virtually at sea level); nor could the inept pilots alleged to have flown them have pulled off this stunt. Furthermore, how could jet fuel cause the twin towers to not only fall at close to free-fall speed, but almost disintegrate before hitting the ground? And then there's the implosion and free fall of building 7 -- from an office fire? Hundreds of discrepancies, contradictions and unanswered questions remain that show the official conspiracy theory released by the mainstream media and our government was false.

    Examining 9/11 is less about the past and far more about the future. Like the introduction of the Internet and the iPhone, 9/11 changed the world forever. While it seems to have expanded the power and control of greedy, evil and misguided people (both foreign and domestic) -- which we must always seek to reveal, restrain and resist -- it might have exposed a new kind of energy technology (similar to the shocking unveiling of the atomic bomb and nuclear weapons) that could vastly improve the world if used in benevolent ways for all people.

    1. I feel sorry for the ignorance of some people...its sad.