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Post date: Apr 15, 2010 2:40:20 PM
Update: May-8-2010
Volcanic ash cloud shuts Spanish airports
Spain has closed 19 airports as a cloud of ash from an Icelandic volcano drifts south over Western Europe.
Spain's second biggest airport at Barcelona is among
those affected
source: news.bbc.co.uk
Update: May-4-2010
Volcano ash Ireland Scotland? no flights wednesday 5 may 2010
Levels of ash in the atmosphere over Scotland and Northern Ireland
will exceed the concentrations that engine manufacturers have
agreed are safe for operations. news.bbc.co.uk
Update-21: Volcano ash 0.0001g/m, Europe safe to fly now, why ?
Update: April-21-2010
Safe to fly, why ?
The UK Met Office is still detecting an ash cloud in European airspace, so why is it now safe to allow planes to fly?
Now, scientists and engineers have agreed a safe threshold - a concentration of ash of 0.002g per cubic metre of air. At or below this concentration, there is no damage to the engine. UK airspace was around 100 micrograms (or 0.0001g) per cubic metre. news.bbc.co.uk
Update: April-20-2010
Europe starts to resume flights
A few flights take off in northern Europe, but the UK warns a new volcanic ash cloud may be spreading from Iceland. New ash cloud rises news.bbc.co.uk
A CAA spokesman said: "We need evidence to prove that it is safe to fly... we have evidence that ash adversely affects aircraft and at the moment the manufacturers' guidelines are zero rating with respect to ash." cnn.com
NATO F-16 Fighter planes damaged
flying through volcano cloud on monday
show signs of engine damage by particles melting in the engine to somehow glas,
and covering the engine blades. Engines
need expensive remake like F-18 from
Finland last week. What happens to civil
aircraft in 3months, engine overhaul ?
source: fr.news.yahoo.com
Update April-19-2010
Flight tests over UK Britain...flying thursday ?
concluded that the situation could still be dangerous.
British Airways fears it may not be allowed to fly normal services until Thursday at the earliest.
EU video conference
EU transport ministers are to hold emergency talks by video conference on easing the air travel crisis caused by a volcanic ash. The impact of the dust on jet engines, would be considered during the conference.
source: news.bbc.co.uk
Update preview: April-18-2010
Update: April-17-2010Dust cloud drives 30km/h east Russia
no wind no rain condition keeps ash cloud
alive, now reaching in the south french riviera
German Lufthansa
makes first no-passenger
test flights Munich - Frankfurt; no problems now.
What happens if dust causes problems later
in the engines ( long term effect ) ?
Weather, Solar and Crops
Vulcano eruption with resulting dust cloud
will change springtime weather EU; less Solar power (-3%) may be produced; if the outbreak lasts at least for one week.
Volcano
The black
spot north
of England
travels east
Solar
Volcano
dust cloud may
reduce Solar
power
source: theatlantic.com/science
Sulfur dioxide aerosols reflect Sunlight
When volcanoes erupt, they release sulfur dioxide into the stratosphere, where the gas transforms into sulfuric acid droplets, also known as aerosols, which reflect sunlight. Historically, large volcanic eruptions have caused discernible global cooling
No cooling now ?
If Eyjafjallajokull continues to spew gas into the atmosphere, though, that could change. The eruption is already ten times more powerful than a different Icelandic one last month, and the ash cloud extends seven miles into the stratosphere, cooling may happen, or change of summer weather (- 1°C) in europe.
Related:
British Airways Flight 9 / 1982 Volcano ash
Jumbo British airways leaves Ash cloud 10.000m
over Jakarta volcano with engines under fire.
Volcano ash melted in the engines like glas,
covered the blades, engines took fire....stop.
Under 4000m jet engines restarted
source: en.wikipedia.org
Click for enlargement
view the rock (bottom right)
made from volcano ash
found inside the engine
Damaged engine parts from BA 9 on display at
Image: British-Airways-Flight-9 turbine and compressor blades
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