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Postby Tairaa » Mon Jun 08, 2009 1:55 pm

Oh of course, but the reason for that is a lack of charge. All current takes the path of least resistance, which typically is cloud to cloud. Only in sufficient buildups will lightning strike ground.

So yes, being in a cloud would make it more likely to be struck. Which would be such a factor I was mentioning. However that comes with the lower net charge per strike also.
"George Bush says he speaks to god every day, and christians love him for it. If George Bush said he spoke to god through his hair dryer, they would think he was mad. I fail to see how the addition of a hair dryer makes it any more absurd."
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Postby jaydeehess » Mon Jun 08, 2009 2:00 pm

As for speed sensors; there is a rather famous crash of IIRC 757 off the west coast of S.America that was caused by a maintenace person covering the speed sensor tubes with tape so that cleaning fluid would not get in them, and forgetting to take the tape off before the plane went back into service.

The flight was at night so the crew was relying on instruments which were soon making no sense at all. They thought they were IIRC going too fast but were actually near stall speed. the altitude readings were also not working and although they thought they were at altitude the terrain warnings were going off and they hit the ocean killing all on board.

If the speed sensors ice up on the Airbus them similar unreliable readings would result but perhaps not be noticed by the crew especially if they were entering a storm in which they could expect fluctuations in airspeed due to the turbulence.

If they were too slow then a severe turbulence might cause a pitch up or down or severe yaw. The plane that went down in Queens in 2001 was crippled by the crew over compensating for turbulence caused yaw. It tore the vert stabilizer off.

If they were too fast and hit heavy turbulence it may have exceeded the forces the aircraft was designed for. Such would not immediatly cripple the a/c but theye were in the middle of a storm at the time. If power also went out to the radios they would not be able to send a Mayday or they may have simply been too busy to do so.

Bottom line is that unless the FDR and CVR are found, and are not damaged by the crash and subsequent crushing pressure of thousands of feet of water depth, we may never know exactly what took this aircraft down.


So wail away on the conspiracy speculations that some here do oh so well.
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Postby jaydeehess » Mon Jun 08, 2009 2:07 pm

Tairaa wrote:Oh of course, but the reason for that is a lack of charge. All current takes the path of least resistance, which typically is cloud to cloud. Only in sufficient buildups will lightning strike ground.

So yes, being in a cloud would make it more likely to be struck. Which would be such a factor I was mentioning. However that comes with the lower net charge per strike also.


More a case of distance. It may well be closer between areas of differiing charge within the cloud, than between cloud and ground. greater distance equals higher voltage and thus higher current.
However the resistance within the cloud is also less (it is after all a mist of fine droplets) which would allow faster discharge and thus higher current.

As said though, lightning alone is not likely the sole culprit. As I said I could see it as contributory if it occured along with a severe turbulence which can happen even in moderate storms. It would also help explain the lack of a Mayday.
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Postby jaydeehess » Mon Jun 08, 2009 3:19 pm

How can a Satellite record wind speed? I


http://www.encyclopedia.com/doc/1P3-278894131.html

http://www.floridaenvironment.com/programs/fe00214.htm

Basically it uses Doppler radar imaging of the speed of water droplets in the cloud.
It cannot measure clear air wind speed.

It is much the same as ground based Doppler wind speed measurements in tornadoes (in which it is also seeing debris speeds) and hurricanes except it is mounted above, rather than below, the storm. Uncertanties are greater though due to the distance from the satellite(resulting in a much steeper look angle) and the fact that with ground based systems there really isn't much beyond the storm cloud whereas with a sat based systems the whole Earth lies behind what you are looking at.

Sea surface buoys do not really tell much about what the winds 5 miles up are. They would be more useful for ships.

There used to be weather ships that would send balloons with radio-sondes up which were very accurate but I don't know if that is still done much.
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Postby Cole_Trickle » Wed Jun 10, 2009 6:28 am

Here ya go, ah the convenience of it all. Save that money at all cost, shove it up the Insurance companies bung hole. No fault of the faulty equipment it was them there nasty dirty Muslims once again! :roll: :roll: Holy bat sh*t how long will them stroke this stem? :?

Two passengers with names linked to Islamic terrorism were on the Air France flight which crashed with the loss of 228 lives, it has emerged.


It's terrorism I tells ya, TERRORISM. And just like one of the posters at the end of this piece said: Probably the same guys who did 9-11. Never mind flagging them BEFORE THEY BOARD~~~Wait with all of our KNOWLEDGE until AFTER the fact! :roll:

How old can this sh*t get before it dies it's necessary death?

http://news.sky.com/skynews/Home/World- ... al_Muslims

Longest link line in history, go figure.

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