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-   -   Icelandic Ash Cloud (https://www.pprune.org/military-aviation/412155-icelandic-ash-cloud.html)

r supwoods 15th Apr 2010 21:19

Living in the South East we have regularly been covered in Saharan sand ... didn't this need a suspension of air travel?

Mechta 15th Apr 2010 23:37

So if no powered flights are using controlled airspace, can glider pilots go where they like now?:}

gijoe 16th Apr 2010 09:14

Sandpit Shuttles? Is the Gateway starting to fill up?

andyy 16th Apr 2010 10:17

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.

vecvechookattack 16th Apr 2010 10:59

I seem to remember from O Level Geography that the biggest danger is a volcano called Katla. Is this eruption close to Katla?

Molemot 16th Apr 2010 11:18

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......

melmothtw 16th Apr 2010 13:42

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

TheSmiter 16th Apr 2010 13:58

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?

:uhoh:

Gainesy 16th Apr 2010 14:48

Nice to see the USA includes itself in "the World" then.

Couple of light GA types swanning around n. of Shoreham.

Duncan D'Sorderlee 16th Apr 2010 16:34

Still not a speck of dust/ash in the sky here!

Duncs:ok:

RS30 16th Apr 2010 17:51

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!

GreenKnight121 16th Apr 2010 19:25

Finnish fighter jets damaged by volcanic cloud


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

PICTURES: Finnish F-18 engine check reveals effects of volcanic dust-16/04/2010-London-Flightglobal.com


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.
http://www.flightglobal.com/assets/g...x?ItemID=33774

http://www.flightglobal.com/assets/g...x?ItemID=33775

Gainesy 17th Apr 2010 07:13

Any plane-spotters topped themselves yet?:)

Anyone got the pix of the sand-blasted engines' innards from GW1? A few folk were caught out by sandstorms if I remember correctly.

Tourist 17th Apr 2010 10:24

Don't see why this would worry any of our helicopters fitted with sand filters

scarecrow450 17th Apr 2010 10:43


Any plane-spotters topped themselves yet?http://images.ibsrv.net/ibsrv/res/sr...lies/smile.gif
nearly !! not that I'm a spotter of course ! :hmm:

DHFS canx all flghts friday

Molemot 17th Apr 2010 10:52

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!!!

TheChitterneFlyer 17th Apr 2010 11:06

Tourist,

Sand and volcanic dust are two entirely different particles. Volcanic dust is similar to talcum powder... no sand filter is going to filter this sort of stuff.

cornish-stormrider 17th Apr 2010 12:00

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 :E

Tourist 17th Apr 2010 13:41

TheChitterneFlyer

Methinks that you do not know what sort of filter helicopters have nowadays.
Me also thinks that you should go see the sand in Afghanistan and then talk to me about fine talcum powder.

Winch-control 17th Apr 2010 14:03

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??:ugh:
Don't think so! :rolleyes:


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