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9/11: Scientific Evidence Flight 77 Did Not Strike The Pentagon

by Enver Masud and General Joe Sunday, Jul. 05, 2009 at 5:50 AM

"Given the topography and obstacles in its path, forces generated by the transition from downward flight to level flight would cause the aircraft to disintegrate before striking the Pentagon. A simple formula, familiar to high school students, may debunk the official account of American Airlines Flight 77 that is alleged to have struck the Pentagon on September 11, 2001. "




9/11: Scientific Evidence Flight 77 Did Not Strike The Pentagon

Enver Masud 03 Jul 2009 10:53 GMT
USA
Given the topography and obstacles in its path, forces generated by the transition from downward flight to level flight would cause the aircraft to disintegrate before striking the Pentagon.
A simple formula, familiar to high school students, may debunk the official account of American Airlines Flight 77 that is alleged to have struck the Pentagon on September 11, 2001.

Force = Mass X Velocity Squared / Radius.

This formula approximates the force that would be exerted on an aircraft when it transitions from its downward path to level flight in a circular arc.

First we determine the mass of the aircraft.

Flight 77, a Boeing 757, had taken off from Washington Dulles International airport, and was bound for Los Angeles. Assuming its fuel tanks were full, and ignoring the weight of the 64 passengers, and cargo (which should be available if one wants to include them), the weight of the plane would be about 255,000 pounds (Boeing Technical Specifications).

For our calculation we'll assume that weight and mass are equal, i.e. 255,000 pounds.

For velocity, we turn to the official account that Flight 77 struck the Pentagon at "530 miles per hour" (The 9/11 Commission Report, p10).

To calculate the radius, we could begin with a statement in The 9/11 Commission Report (p9): Flight 77 was "5 miles west-southwest of the Pentagon" when it "began a 330-degree turn. At the end of turn, it was descending through 2,200 feet".

Next we need to calculate the maximum radius (the most conservative case) of the arc that would allow the aircraft to transition from downward flight to level flight (while clearing obstacles in its path), and strike the Pentagon at the point described in official reports.

Rather than perform this calculation for the radius, we chose to use the radius calculated by Pilots for 9/11 Truth.

Pilots for 9/11 Truth base their calculation on the Flight Data Recorder data obtained pursuant to a Freedom of Information Act request filed with the National Transportation Safety Board, and carefully constructed topography of the area below the flight path.

Leaving aside the discrepancies between the official account of Flight 77, and the Flight Data Recorder, Pilots for 9/11 Truth calculated a radius equal to about 579 feet.

From this they calculated the force on the Boeing 757 at 34 Gs, i.e. 34 times the force due to gravity.

There has been some criticism of the calculations performed by Pilots for 9/11 Truth, and they have answered their critics.

With mass, velocity, and radius equal to 255,000 lbs, 530 mph, and 579 feet respectively, the preceding formula yields force equal to 8,276,850 lbs, i.e. the Boeing 757 would act as if it had increased its weight by 8,276,850, or more than 32 times its normal weight.

With a virtual weight of about 8.5 million pounds, Flight 77 would have disintegrated before striking the Pentagon.

This one fact is sufficient to debunk the official account of Flight 77.

Neither Hani Hanjour -- the alleged pilot trainee "noted for incompetence", nor the Boeing 757, would have been in any condition to fly with "the top of the fuselage of the aircraft no more than 20 ft above the ground" (Pentagon Building Performance Report, p14).

If you disagree, figure out the mass, velocity, and radius, and plug them into the formula to calculate the force. If you have a better formula, use it. Could a Boeing 757 survive the calculated force?

This scientific, and other evidence, reinforces the conclusion we reached four years ago: Flight 77 did not strike the Pentagon.

e-mail:: staff@twf.org homepage:: http://www.twf.org/

-----

Share this information with everyone, everywhere. Especiallu with friends, family, and neighbors in the city that suffer as a result of this attack om the psychology of our nation carried out to justify more military spending, more invasion, more dead on the battlefields all over this planet. General Joe
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A Major Flaw!!! Rodney Bleckstyne Wednesday, Jul. 15, 2009 at 1:38 PM

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