I hope they are alright.
What you reckon has happened? Plane goes into to sea? Planes float right? :S
What you reckon has happened? Plane goes into to sea? Planes float right? :S
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Brazil - France Flight
I feel sorry for them, reminds me of all these films 
I'm going to florida in august for 2 weeks! kinda scares me a bit..
I'm going to florida in august for 2 weeks! kinda scares me a bit..
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if ti has gone into the sea it has gone fro 35000ft into it. im not sure what the controls would be like sans power... i.e nose dive, plane brakes up on impact, no time for safe controlled evactuation of any one
latest reports are of other passenger planes reporting bright bits in the sea....
http://news.bbc.co.uk/1/hi/world/europe/8078203.stm
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C J
New member
Tell them to go see these people.......
http://www.hsmarston.co.uk/products_lightning.htm
I helped qualify their products for use on Eurofighter many years ago.....
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"For a plane to get hit by lightning is totally routine," said Pierre Sparaco, a member of the French Air and Space Academy.
C J
New member
if ti has gone into the sea it has gone fro 35000ft into it. im not sure what the controls would be like sans power... i.e nose dive, plane brakes up on impact, no time for safe controlled evactuation of any one
latest reports are of other passenger planes reporting bright bits in the sea....
Not sure what the backup is on a total electrics failure on a fly by wire aircraft..... Very improbable they lost primary flying controls.... Emergency hydraulic power would have kept them in control for a forced landing... The pilot who crashed in the Hudson did pretty well.....
Still the safest form of transport (statistically).....
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C J
New member
He's quite right.... More often called a ram air turbine... (RAT)... can provide drive to a hydraulic pump and electrickery.... provides a very limited amount of power that is usually taken from either a direct drive from the engines, or possibly from bleed air from the low pressure parts of the compression stage in the engine.
Clever things these aeroplanes..... Just when they do go wrong its quite spectacular..... What everyone doesnt realise is how many minor faults aircraft have all the time, which are covered off off by redundancy in the systems.
Such a complex system, so often taken for granted....
I worked for a year at an insulation company. They made heat shields and insulation for 737 engines. You'd be amazed at the state that some of them came back for repairs
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when we were flying from Manc to Canada one year the plane was hit by lightening and we had to land in Scotland as it broke
:chin: think that's the only time i've been on a plane when we were told about problems. once a pilot did come on the tannoy thingy to say he was glad it landed ok as he was a bit concerned all wasn't well it's funny to see a whole plane full of people go silent and their faces blank
:chin: think that's the only time i've been on a plane when we were told about problems. once a pilot did come on the tannoy thingy to say he was glad it landed ok as he was a bit concerned all wasn't well
it's funny to see a whole plane full of people go silent and their faces blank 
what they dont tell you is that they have trackers all over these planes, so they will find it, whether its in bits or not is a completely different matter though!
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To get absolute electrical failure is pretty damn difficult from what I recall.
IIRC, theres at least 3 different power lines from each engine (including normal 230v operating buses), and loss of both engines has to be 'extremely remote' - less than 1x10-9 / flying hour (according to CS-E/FAR-25, however if you believe that thats our own head you're carrying).
Then theres always the batteries powering the very critical systems and the RAT powering the really critical flight controls. (Id think DAL A / SIL 4 systems).
As for the use of bleed air starting the APU - you'de be buggered with something like the 787 - its electric start! It surprises me to this day how the safety guys get past loss of both engines, I recall it requires a fair few kW to get an engine moving.
FYI RATs are independent of engine systems - it may derive power from an engine via the aircraft, but theres no direct connection to it, it'd make great fun (read too much) for the airframe safety case.
you missed the wind turbine
Thats the RAT (Ram Air Turbine)!
aw
i mean the fing that drops down from side of the plane
i mean the fing that drops down from side of the plane
just checking
Had an interesting conversation with an aircraft maintenance staff member of an airlihat tne.
He told me the plane was grounded in India three weeks prior to the crash. The reason for grounding was to prevent what actually has finally happened.
The signals received from the plane from the moments clearly indicated that a electrical short circuit was the b eginning of the catastrophy, which progressed to frying systematically the electronics.
This is possible because Airbus industries (the only manufacturer of aircraft doing so now) till date fits capton wiring, which is known to suffer this problem, which even prompted the RAF to re-wire all its aircraft at exorbitant cost.
In public the it was allowed to speculate that it might even be a terrorist attack despite the fact knowing.
Understandable from the point of people who have to save themselves, because under French law the consequences are pretty tough. This leaves airbus industries and quite a few others in a very difficult situation.
He told me the plane was grounded in India three weeks prior to the crash. The reason for grounding was to prevent what actually has finally happened.
The signals received from the plane from the moments clearly indicated that a electrical short circuit was the b eginning of the catastrophy, which progressed to frying systematically the electronics.
This is possible because Airbus industries (the only manufacturer of aircraft doing so now) till date fits capton wiring, which is known to suffer this problem, which even prompted the RAF to re-wire all its aircraft at exorbitant cost.
In public the it was allowed to speculate that it might even be a terrorist attack despite the fact knowing.
Understandable from the point of people who have to save themselves, because under French law the consequences are pretty tough. This leaves airbus industries and quite a few others in a very difficult situation.
What is so special about this capton wiring then? Sounds like a bit of a pickle for Airbus
