It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by mirageofdeceit
pilotsfor911truth had this to say regarding the Pentagon crash:
Once this maneuver was completed, without going into a graveyard spiral, he started to pull out of the descent at 2200 feet and accelerated only 30 knots more at full power to 460 knots in a descent from 2200 feet to the pentagon in about a minute (Whats Vmo at sea level for a 757? Flap speed? Since it looks like he may have found the flap handle only accelerating 60 knots from 7000 feet, the from 2200 feet at full power). AA77 crossed the highways, knocking down light poles, entered ground effect, didnt touch the lawn and got a 44 foot high target (Tail height of 757) into a 77 foot target completely, without overshooting or bouncing off the lawn, or spreading any wreckage at 460 knots. With a 33 foot margin for error. Wow, impressive. Takes a real steady hand to pull that off. I know it would take me a few tries to get it so precise, especially entering ground effect at those speeds. Any slight movement will put you off 50 feet very quickly. Im sure we all would agree.
Regarding the items in bold:
Vmo = Velocity Maximum Operating. This is the maximum speed the aircraft is designed to fly at without over-stressing the airframe.
Vmo depends on pressure altitude. At altitudes below around 5,000ft MSL (Mean Sea Level), the change in pressure due to altitude is insignificant and can be ignored. Vmo for a 757 at this altitude is about 350kts. The aircraft crashed at 460kts according to the FDR from the flight, or 400MPH according to the official report (or approximately 347kts). These figures vary significantly.
Speed of sound at sea level (not corrected for actual local meteorological conditions on the day) is approximately 661kts. At the time of impact, the aircraft was traveling at close to Mach 0.70, based on the FDR.
Based upon the official report, the aircraft was flying at approximately M0.52.
** EDITED ** For comparison, a Tomahawk cruise missile (as has been argued as the actual device that hit the pentagon) travels at approximately 480kts, or Mach 0.75. (Source: www.fas.org... ) ** EDITED **
I would also like to raise the following point:
Executing a 330 degree turn, meant putting the Pentagon from their 11 o'clock position (based upon the fact it was a right hand turn they executed) and crucially, resulting in it moving out of view from the flight deck, so it moves around behind them (and out of sight), whilst descending, to make it so they could line up with it. For someone who allegedly struggled to land a Cessna whilst having the runway in sight ahead of them the whole time, this was quite a maneuver! They managed to get the descent (and remember, this would have to be flying visually) right so they weren't so low, they lost sight of the building (something that is possible to do, certainly having completed a turn and having lost visual contact with the building, and also being inexperienced at flying a large commercial airliner, its turning characteristics and effective turning circle).
This on its own raises other question:
Why go to the trouble of **LOSING** altitude (and thus gravitational potential energy, as well as making the aspect of the building much smaller and harder to see), losing sight with the building during the turn (quite possible to do), in order to fly into the side of the building, risking hitting other obstacles on the way (e.g. light poles/power cables/other buildings/the ground etc..), that could have meant they crash short of the intended target? Surely if they wanted to commit such an atrocious act, they'd simply point the nose at the building, offering themselves a much bigger, clearer target, and cut out not one, but several tough maneuvers that could have meant they don't hit what they intended to hit?
Originally posted by magicmushroom
Mossad Motto, By Way of Deception, Thou Shalt Do War.
Originally posted by Wizard_In_The_Woods
It took 28 years to find the Unabomber — in the largest manhunt in FBI history. And we only found him because his brother ratted him out. Yet we uncovered the entire Al-Qaida network in two days. Prior to 9-11 no one in the general public had ever even heard of Al-Qaida. Doesn’t that strike EVEYONE odd?
The Wizard In The Woods