Icelandic Ash Cloud
Joined: Jul 2003
Posts: 289
Likes: 2
From: E MIDLANDS
ORAC, Re your 1203 yesterday, post #7, I think You'll find that it was an RN Helicopter. I am quite sure that other Services could have accomplished the task with their helicopters but a bit of accuracy (or pointing out the inaccuracies of others) would not go amiss.
Joined: Aug 2007
Posts: 250
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From: Near the watter...
This from elsewhere....not too joyful!!
Global cooling: What happens if the Iceland volcano blows
The potential eruption of Iceland's volcano Katla would likely send the world, including the USA, into an extended deep freeze.
"When Katla went off in the 1700s, the USA suffered a very cold winter," says Gary Hufford, a scientist with the Alaska Region of the National Weather Service. "To the point, the Mississippi River froze just north of New Orleans and the East Coast, especially New England, had an extremely cold winter. Depending on a new eruption, Katla could cause some serious weather changes."
Eyjafjallajokull, the Icelandic volcano .... isn't the direct problem. It's Katla, the noisier neighbor, that's the concern. If lava flowing from Eyjafjallajokull melts the glaciers that hold down the top of Katla, then Katla could blow its top, pumping gigantic amounts of ash into the atmosphere.
Scientists say history has proven that whenever the Eyjafjallajokull volcano erupts, Katla always follows -- the only question is how soon.
"If it (Eyjafjallajokull) continues to belch, then you worry," says Hufford......
Global cooling: What happens if the Iceland volcano blows
The potential eruption of Iceland's volcano Katla would likely send the world, including the USA, into an extended deep freeze.
"When Katla went off in the 1700s, the USA suffered a very cold winter," says Gary Hufford, a scientist with the Alaska Region of the National Weather Service. "To the point, the Mississippi River froze just north of New Orleans and the East Coast, especially New England, had an extremely cold winter. Depending on a new eruption, Katla could cause some serious weather changes."
Eyjafjallajokull, the Icelandic volcano .... isn't the direct problem. It's Katla, the noisier neighbor, that's the concern. If lava flowing from Eyjafjallajokull melts the glaciers that hold down the top of Katla, then Katla could blow its top, pumping gigantic amounts of ash into the atmosphere.
Scientists say history has proven that whenever the Eyjafjallajokull volcano erupts, Katla always follows -- the only question is how soon.
"If it (Eyjafjallajokull) continues to belch, then you worry," says Hufford......
Joined: Jul 2006
Posts: 2,192
Likes: 240
From: The back of beyond
SAR, QRA, and emergency medical flights unaffected.
Airbridges to Afghan and Falklands suspended with 4 aircraft currently held up in the system (2 stuck at Akrotiri)
Emergency evacuation out of Afghan going to unaffected coalition nations
Airbridges to Afghan and Falklands suspended with 4 aircraft currently held up in the system (2 stuck at Akrotiri)
Emergency evacuation out of Afghan going to unaffected coalition nations
Joined: Jul 2007
Posts: 40
Likes: 0
From: UK
Nice day for it but my trip scrubbed due to the ash! Stacked early and looked up at a sky completely devoid of contrails. Must be the first time that has happened over the UK since the 50s. Felt like being in the stone age...bring back the jets!
Joined: Jul 2006
Posts: 1,538
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From: by the Great Salt Lake, USA
Finnish fighter jets damaged by volcanic cloud
PICTURES: Finnish F-18 engine check reveals effects of volcanic dust-16/04/2010-London-Flightglobal.com
Finnish fighter jets damaged by volcanic cloud
AFP
Published: Friday, April 16, 2010
HELSINKI - Finnish fighter jets which flew through the volcanic dust covering much of Europe suffered damage and the air force warned Friday the cloud could have a significant impact on planes.
The air force F-18 Hornet jets were on training flights in northern Finland on Thursday morning, when airspace was still open, and the engines were later found to contain fine, volcanic ash dust.
"Based on the pictures, it was discovered that even short flights in ash dust may cause significant damage to an airplane's engine," the Finnish Defence Forces said in a statement.
Images taken inside one Hornet engine with a fibroscope camera indicated that the heat of the engine - around 1,000 degrees Celcius - had melted the ash inside the engine, blocking ventilation channels. "Blockages of ventilation channels caused by melting ash lead engine components to overheat and material to weaken," it said, adding this could fracture rotating engine parts. In the worst case, the weakening of component materials could cause "parts to detach and the engine to be destroyed," it said.
The Hornets exposed to the dust from the eruption of a volcano in Iceland would be checked thoroughly, with "at least some" of the engines detached and sent for further studies and repair.
The air force would keep a Hawk combat aircraft equipped with a tank to take atmospheric samples on standby to assist civilian authorities as necessary, it said, adding that operative military flights would continue normally. Samples taken by the plane, which collects particle samples in a filter in the tank, could be used to analyze how much ash dust was in the air.
A huge cloud of volcanic ash from Iceland has spread over large part of Europe, shutting airports and forcing the cancellation of thousands of flights. Finland's airports were shut Thursday at midnight and flights are not due to resume until Saturday afternoon at earliest.
© Agence France-Presse 2010
AFP
Published: Friday, April 16, 2010
HELSINKI - Finnish fighter jets which flew through the volcanic dust covering much of Europe suffered damage and the air force warned Friday the cloud could have a significant impact on planes.
The air force F-18 Hornet jets were on training flights in northern Finland on Thursday morning, when airspace was still open, and the engines were later found to contain fine, volcanic ash dust.
"Based on the pictures, it was discovered that even short flights in ash dust may cause significant damage to an airplane's engine," the Finnish Defence Forces said in a statement.
Images taken inside one Hornet engine with a fibroscope camera indicated that the heat of the engine - around 1,000 degrees Celcius - had melted the ash inside the engine, blocking ventilation channels. "Blockages of ventilation channels caused by melting ash lead engine components to overheat and material to weaken," it said, adding this could fracture rotating engine parts. In the worst case, the weakening of component materials could cause "parts to detach and the engine to be destroyed," it said.
The Hornets exposed to the dust from the eruption of a volcano in Iceland would be checked thoroughly, with "at least some" of the engines detached and sent for further studies and repair.
The air force would keep a Hawk combat aircraft equipped with a tank to take atmospheric samples on standby to assist civilian authorities as necessary, it said, adding that operative military flights would continue normally. Samples taken by the plane, which collects particle samples in a filter in the tank, could be used to analyze how much ash dust was in the air.
A huge cloud of volcanic ash from Iceland has spread over large part of Europe, shutting airports and forcing the cancellation of thousands of flights. Finland's airports were shut Thursday at midnight and flights are not due to resume until Saturday afternoon at earliest.
© Agence France-Presse 2010
PICTURES: Finnish F-18 engine check reveals effects of volcanic dust
By Craig Hoyle
The Finnish air force has released images showing the effects of volcanic dust ingestion from inside the engines of a Boeing F-18 Hornet fighter, while it prepares to make inspections on several additional aircraft.
Five of the air force’s Hornets were involved in a training exercise on the morning of 15 April, just hours before the imposition of airspace restrictions due to the ash cloud spreading from a major volcanic eruption in Iceland.
One aircraft’s engines have been inspected so far using a boroscope, with melted ash clearly visible on its inside surface. The air force decided to release the images to show the potentially damaging effects of current flight activities, says chief information officer Joni Malkamäki.
“The images show that short-term flying can cause substantial damage to an aircraft engine,” the air force says. Continued operation could lead to overheating and potentially pose a threat to the aircraft and its pilot, it adds.
Checks will soon be made on the other four aircraft involved, and some engines will be removed to help Finnish company Patria – which provides in-service support for the nation’s F-18 fleet – to assess the extent of any damage caused. Its fleet comprises 55 single-seat F-18Cs and seven two-seat trainers, with each powered by two General Electric F404-402 engines.
Finland halted air force training flights yesterday, but the air force will continue to perform operational sorties as required, such as air policing missions and national security tasks.
One of its BAE Systems Hawk jet trainers also flew from Kauhava air base twice yesterday carrying an air sampling pod which collected dust from the atmosphere at various altitudes.
The air force is sharing the gathered information with the Finnish civil aviation authorities, and says it will stage more such flights as requested.
By Craig Hoyle
The Finnish air force has released images showing the effects of volcanic dust ingestion from inside the engines of a Boeing F-18 Hornet fighter, while it prepares to make inspections on several additional aircraft.
Five of the air force’s Hornets were involved in a training exercise on the morning of 15 April, just hours before the imposition of airspace restrictions due to the ash cloud spreading from a major volcanic eruption in Iceland.
One aircraft’s engines have been inspected so far using a boroscope, with melted ash clearly visible on its inside surface. The air force decided to release the images to show the potentially damaging effects of current flight activities, says chief information officer Joni Malkamäki.
“The images show that short-term flying can cause substantial damage to an aircraft engine,” the air force says. Continued operation could lead to overheating and potentially pose a threat to the aircraft and its pilot, it adds.
Checks will soon be made on the other four aircraft involved, and some engines will be removed to help Finnish company Patria – which provides in-service support for the nation’s F-18 fleet – to assess the extent of any damage caused. Its fleet comprises 55 single-seat F-18Cs and seven two-seat trainers, with each powered by two General Electric F404-402 engines.
Finland halted air force training flights yesterday, but the air force will continue to perform operational sorties as required, such as air policing missions and national security tasks.
One of its BAE Systems Hawk jet trainers also flew from Kauhava air base twice yesterday carrying an air sampling pod which collected dust from the atmosphere at various altitudes.
The air force is sharing the gathered information with the Finnish civil aviation authorities, and says it will stage more such flights as requested.
Joined: Aug 2007
Posts: 250
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From: Near the watter...
Global cooling: What happens if the Iceland volcano blows
Thanks for that Moley, really cheered me up.
Do you mind if I lie down under the kitchen table and drink heavily?
Smiter, my plan exactly!!!
Thanks for that Moley, really cheered me up.
Do you mind if I lie down under the kitchen table and drink heavily?
Smiter, my plan exactly!!!
Joined: Feb 2007
Posts: 1,015
Likes: 1
From: Exiled in England
yet they manage with other very fine sand particles.
Also remember that chopper donks are a lot less highly strung than your average bypass thunderchariot.
RB199's get mullered by sand - I'd imagine EJ200's and prattle and whineys efforts suffer as well.
Your average french train engine just chugs along
Go Puma, Go Puma, Go Puma!
It wouldn't affect a scramjet so Aurora shoud be fine, I'm informed by the tinfoilers it will be overflying today
Also remember that chopper donks are a lot less highly strung than your average bypass thunderchariot.
RB199's get mullered by sand - I'd imagine EJ200's and prattle and whineys efforts suffer as well.
Your average french train engine just chugs along
Go Puma, Go Puma, Go Puma!
It wouldn't affect a scramjet so Aurora shoud be fine, I'm informed by the tinfoilers it will be overflying today
Joined: Sep 2006
Posts: 308
Likes: 0
From: NZ
Reminded me of the Train stops.. Yes sir, little bit of snow on the line, short delay!
Little bit of "talcum powder" falls out somewhere in the near vicinity of a UK Mil a/c.....and err yep grounded...
And whose to say eaps won't remove it? has it been trialed??
Don't think so!
Little bit of "talcum powder" falls out somewhere in the near vicinity of a UK Mil a/c.....and err yep grounded...
And whose to say eaps won't remove it? has it been trialed??
Don't think so!