Legge & Chandler: New Refutation of the Pentagon Flyover Hypothesis

September 6th, 2011 Posted in

The Pentagon Attack on 9/11: A Refutation of the Pentagon Flyover Hypothesis Based on Analysis of the Flight Path
By Frank Legge
(B.Sc., Ph.D., Chemistry)
David Chandler
(B.S. Physics, M.S.,Mathematics)

September 2011, source


The legal and political implications of 9/11 have turned scientific research in this area into a high stakes competition for the minds of the public. Pertinent information has been kept secret, the corporate media has systematically kept “damaging” information (such as video images of the World Trade Center Building 7) out of public view, 9/11 research has been marginalized, and the official investigations have failed to answer, or in many cases even address, the most troubling questions. One development that appears to be a tactic in the ongoing cover-up is the high profile promotion of transparently false theories, “straw men,” the only purpose of which appears to be to allow the 9/11 Truth Movement to be ridiculed.

With the tenth anniversary of 9/11 upon us, the battle for public perceptions has intensified and there is a heightened campaign to undermine the scientific basis of the truth movement. Dr Judy Wood has published a book asserting that the World Trade Center (WTC) towers were felled by “dustification” of the steel, which she claims is achieved by the use of “directed free energy”. 1 It is, however, obvious that the steel was severed and fell in normal lengths, otherwise intact, as seen in conventional demolitions. The similarly foolish idea that the WTC towers were demolished by nuclear explosives, long ago refuted, 2 has also been recently revived, with a new claimant appearing, Jeff Prager, 3 but this appears to be having little influence so far. No explanation involving “directed free energy” or nuclear devices could account for the way separate explosions appeared in the Twin Towers, layer by layer, descending at a precise rate, as the towers came down. 4

It is important to distinguish between devious false claims, intended to weaken the truth movement, and false claims which result from accidental errors. There can be errors of interpretation of evidence, calculation errors and misleading testimonies from witnesses who fail to correctly remember the event they observed and describe.

An example of an unfortunate calculation error is found in the work of Pilots for 9/11 Truth (PFT). This group has a long-held position that the topography near the Pentagon would rule out impact by American Airlines Flight 77 (AA77). This position was based on a calculation that the plane would necessarily experience an unsurvivable force of 10.14g if it attempted to pull up from the dive on approach to the Pentagon. 5

PFT based its calculation on a path that was somewhat different from the path of the plane as shown in the files initially provided by the National Transport Safety Board (NTSB), reportedly from the flight data recorder (FDR). The NTSB data appeared to show that the flight terminated at a point too high to have hit the Pentagon. Instead, to make the possibility of impact more feasible, the PFT calculation was based on the assumption that the plane actually came in much lower, level with the top of the VDOT antenna tower near the Navy Annex. It was shown by several researchers that this calculation was incorrect due to a substantial error in determining the radius of the pull-up arc.

This error in turn produced an excessive value for the required g-force. The error was increased by assuming, without evidence, that the plane traveled in a straight line at a constant descent angle from the top of the antenna to the first light pole hit. If this artificial restriction is removed, and the plane is allowed to follow a curved approach, the pull-up can be spread over a wider arc, increasing the radius of curvature and reducing the wing load. Calculation shows that paths can be found such that the force generated would place no undue stress on the aircraft, being well below the design limit of 2.5g. 6

Read full paper here.

See also:

Flight AA77 on 9/11: New FDR Analysis Supports the Official Flight Path Leading to Impact with the Pentagon
Frank Legge and Warren Stutt

What Hit the Pentagon? Misinformation and its Effect on the Credibility of 9/11 Truth
Frank Legge

Google Earth Exposes Pentagon Flyover Farce or Critiquing PentaCon
Jim Hoffman

“Debating” What Hit the Pentagon by Exaggeration, Namecalling, and Threats
Gregg Roberts

Dawn Vignola’s Account vs. CIT’s Methods
Erik Larson

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