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originally posted by: Zaphod58
a reply to: Jacobu12
If you look at ground planning documents, the Rolls Royce engine diameter is 8 feet 1 inch. If you look at the Rolls Royce certification document by the EASA, it's 7 feet 4 inches. Either way, it's not possible for an engine to hang down 8 feet 10 inches unless it's hanging completely below the fuselage.
Many of Hani Hanjour's flight instructors, including the ones that flew with him, are on record as saying they were "horrified" that someone they taught performed this attack and crashed the plane into the Pentagon. They didn't have any trouble believing he did it. Actual 757 pilots are also on record saying he could have done it based on their research and the data. Interesting that at one point you said "Actual pilots would know, don't you think" but when actual pilots say he could have done it, you ignore it.
www.911myths.com...
www.911myths.com...
Both written by pilots with many hours of experience. I think they'd know best, don't you?
originally posted by: neutronflux
originally posted by: bloodymarvelous
originally posted by: neutronflux
originally posted by: bloodymarvelous
originally posted by: neutronflux
a reply to: bloodymarvelous
Nooooo. Radiation is transmitted as a point source. To "focus" radiation in a direction it needs to be built like a flashlight, radar gun, or those funny cones on a microwave tower. Then it still radiates in a cone with "weak" leakage in all directions.
What the hell directs or shields cell phone tower signals to restrict the radiation to ground coverage.
The antennas on cell phones transmit in a spherical shape as a point source.
I think science just died a little.....
It's not a question of anything being focused. A radio wave is just very low frequency light.
A vertical antenna is designed to be able "see" light/radio waves coming at it from the horizontal direction. It can't "see" it when it is coming from directly above, or even a very high angle.
Imagine if you had a visor or something on your head that prevents you from being able to see light coming your direction from high angles. I hold up a lamp (which emits light in a somewhat spherical direction), but I am standing above your horizon. You won't be able to see the lamp.
No. If a antenna is not designed to be directional by utilizing shielding and a surface to reflect and focus the radiation, the radiation is transmitted in a spherical pattern.
That's not true. You can read about it here:
www.astronwireless.com...
An "omnidirectional" vertically mounted antenna means it covers the whole 360 degrees of the horizontal plane, but in most cases its receptivity will drop off the further off of horizontal you go.
It's called the "azimuth".
add:
A vertically mounted antenna is implicitly directional to the horizontal plane because most of its surface area faces the horizontal plane. It simply has a smaller cross section when viewed from any other angle than horizontal. Remember that radio waves are the same thing as light. If something has a smaller cross section from the perspective of you looking at it visibly, then it also has a smaller cross section from the perspective of a radio wave.
Same thing as a flashlight? A Light bulb just in a fixture radiates all of a room with light. Not until you put the light bulb in a flashlight that has a mirrored surface does the light become focused.
Is there not shielding, or not something physically bouncing the beam at the ground like a "mirrored surface", the cell phone tower is still broadcasting into the air.
Found this article, and yes. It says many towers are designed to "direct" the signal at the ground. Not all.
But An air plane can be almost 2 miles above the ground, and cell users can still connect to a tower.
www.cnn.com...
Cell phones communicate through cell towers, which are located on the ground but can stretch hundreds of feet into the air. As an airplane rises, it gets further from these towers and eventually moves out of contact range. For efficiency, many towers are designed to direct their signal where its most useful: on the ground, not into the sky above.
The maximum distance at which a phone can still make calls and send texts varies depending on the type of tower and transmitter, but an airplane would have to be no more than 10,000 feet in the air for any cell phones on board to still have a signal, according to Bill Rojas, director of telecom research at IDC Asia Pacific.
originally posted by: Pilgrum
a reply to: bloodymarvelous
Just had a look at the FDR data and what I see is the barometric correction being changed from 29.91 to 30.23 at 13:24:21 zulu (13 minutes prior to impact) and altitude of ~18000'. The correction caused a reduction in barometric altimeter reading of 38' (18048' - 18010'). Actually the change doesn't appear to have made any significant difference as the aircraft was descending at ~40'/sec at the time.
You need a huge quantity of salt in order to put any faith in the claims made by PFT
We know the engine is 8 feet 10 inches below the wing.
i provided a diagram of 757 for that and the engine does indeed hang down 8 feet 10 inches (fact)
Yes under the wing the Engine does hang down 8 feet 10 inches.
originally posted by: cardinalfan0596
a reply to: Jacobu12
And I carry two cellphones..one personal and one for work. Both on the same network and yet, there is a five minute difference between them...MUST BE A CONSPIRACY!!!!!
originally posted by: cardinalfan0596
a reply to: Jacobu12
No, we found answers long ago. We just grow tired of people who act as if everything they find about 9/11 is something new and then insist that their ideas are reality....when those ideas were disproven long ago.
originally posted by: cardinalfan0596
a reply to: Jacobu12
Sweet Lord.....
The four "unknown" calls were from AIRFONES....not cellphones. I am not sure why it is so hard for you to understand that.
And despite your posting of the AA public relations hack that the Airfones had been removed, the maintenance records for that airframe showed that the phones were still installed and still operable on 9/11/01. Unless of course your remote viewer is now going to claim that GTE and American Airlines Maintenance are part of your grand conspiracy.