Iceland volcano plume

so can we expect a big black cloud and the sky to do dark like in the disaster movies?
 
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When their bank went bust owing us million, we asked for cash and they send ash! Was it a language thing?
 
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they say they've grounded the planes because the ash can damage the jet engines right?
so what about things like helicopters or ever propeller planes? there's still a few of those operating out of BHX last time I looked..

if we went green and used electric powered blimps then this wouldn't be a problem.. :D

I understand that they might want to avoid flying through or above the clouds, but it looks pretty clear out to me below the clouds, so why can't they just fly below the clouds?
 
ColJack said:
they say they've grounded the planes because the ash can damage the jet engines right?
so what about things like helicopters or ever propeller planes? there's still a few of those operating out of BHX last time I looked..

if we went green and used electric powered blimps then this wouldn't be a problem.. :D

I understand that they might want to avoid flying through or above the clouds, but it looks pretty clear out to me below the clouds, so why can't they just fly below the clouds?
Click to expand...

Maybe too expensive, aircraft have better fuel efficiency above 30'000 ft so burn less fuel. The air at higher altitudes is less dense so the planes can fly more effectively.......or maybe the pilots just like to be above the clouds :LOL:
 
ColJack said:
they say they've grounded the planes because the ash can damage the jet engines right?
so what about things like helicopters or ever propeller planes? there's still a few of those operating out of BHX last time I looked..

if we went green and used electric powered blimps then this wouldn't be a problem.. :D

I understand that they might want to avoid flying through or above the clouds, but it looks pretty clear out to me below the clouds, so why can't they just fly below the clouds?
Click to expand...
Because thats common sense, as the prevailing winds generally are from west to east, contingency plans could be introduced via notams low level till west of ireland then climb to designated altitude, hardly rocket science, bet the rest of the world is laughing at us, cause as much disruption as possible seems to be the order of the day.

Wotan
 
i was working for a grounded pilot today. he said the only places he wouldnt have flown to today were the skando countries and iceland itself.

he wasnt worried about engine damage, just the possibility of flame out in a very dense plume.
 
if they can fly helicopters in the frickin iraqi desert then they can manage to get the air ambulances flying when there's no visible ash cloud surely?

air pressure, wind conditions, jet streams, weather conditions are more advantageous at high altitude and the air traffic control radars work more effectively too.
Click to expand...

who gives a crap if it's more fuel efficient and more advantageous to fly at high altitude? they're losing money hand over fist because of the refunds they'll have to give out for cancelled flights so a few quid less profit per passenger is hardly going to matter to them is it?
 
Imaged at 06:40 Sat 170410
IceVolc.jpg


From here : - http://www.vodafone.is/eldgos/en

Scroll down to lower of two images - real time - 6 sec intervals.

Still pouring forth.

http://eldgos.mila.is/eyjafjallajokull-fra-valahnjuk/

What is above us ? http://news.bbc.co.uk/1/hi/uk/8626625.stm?ls

What has it already done to aircraft?
seppop Probationary PPRuNer Join Date: Aug 2009 Location: Vantaa said:
16.04.2010 13:03
Ash particles a significant threat to aviation safety in Finnish Airspace.

The Air Force has investigated during thursday and friday the Lappland Wing F-18 Hornet fighters which were excuting training flights during thursday morning in Northern-Finnish airspace.
At that time the air space was still in general use.

After the planes landed they were inspected, and the engine intakes were found to be covered with "potato-flour" - like volcanic ash dust. One engine of one of the Hornets has been inspected with fiberoscope (boroscope?). Based on the pictures
it was established that even a short period flight in volcanic ash may cause significant
damage to the engine.

The photos indicate that the ingested ash had melted in the heat of the combustion chamber at the temperature of around 1000 degrees C. The effect of melting ash blocking cooling channels in the engine will lead to overheating of engine parts and
deterioration of material strength, and in the worst case, disintegration of components and destruction of the engine.

The Hornets subjected to volcanic ash will be checked substantially. At least some of the engines must be taken out and subjected to further investigation at Patria engine maintenance facility. Those engines which demonstrate signs of ash ingestion effects will be dismantled to determine the full effect of damages. At the same time the ash effects to the engine cooling passages will be determined.

The operative flights will be carried out routinely (ie. identification flights etc.)

Despite the ashcloud the Finnish Air Force continues to keep one Hawk jet-trainer with air-sampling equipment in full preparedness. The plane will fly when the appropriate civilian authorities determine that the flight is necessary.

Based on the information gathered by the aircraft the amount of ash in the atmosphere can be inferred. The results are forwarded to the civilian officials, who
determine the availability to the Finnish air space through different other sources.

The sampling plane will fly at varying altudes and collect particle samples in the container. After landing tha samples will be forwarded to the Defence Forces Technical Reseach Center at Lakiala. The results will be available in about two hours, after which they will be made available to Finavia. If necessary, the aircrew will report visual observations in real time. The atmospheric sampling aircraft is operated by the staffa at Kauhala air base.
Click to expand...

About the top and bottom of it.

A vulnerable part (one of many) from a jet turbine turbine - note the fine cooling holes... Air cooling allows the component to run in temperatures above its melting point... Glazing those could be disastrous.
TurbRot.jpg


NASA DC-8-72 damaged whilst flying past Helka volcano eruption (around 800 nmi distant) some years ago...
http://www.skybrary.aero/bookshelf/books/1161.pdf
-0-
 
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