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U2 pilots suffer brain damage.

 
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Vaughn
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PostPosted: Wed Aug 21, 2013 11:33 am    Post subject: U2 pilots suffer brain damage. Reply with quote



The brain damage is associated with prolonged operation at very high
cabin altitudes. Therefore, it could apparently be alleviated with more
cockpit pressurization, but that would require a complete cockpit
redesign and likely add weight unless advanced materials ($$$) were used.

This sounds like a great argument for UAV's.

Vaughn

http://www.medicalnewstoday.com/articles/265036.php

"Aviators piloting aircraft at very high altitudes for the military have
"significantly more" brain lesions known as white matter
hyperintensities, US Air Force medical researchers have found through
MRI scanning.
The study, published in Neurology, compared the MRI images from 102 USAF
pilots of the U-2 reconnaissance aircraft with brain scans from 91
controls matched for age, health and education levels.
The U-2 Dragon Lady is an aircraft made by Lockheed Martin, originally
designed to go high enough to evade destruction by Soviet anti-aircraft
fire during surveillance missions in the Cold War.

It flies at altitudes above about 69,000 feet (above 21,000 meters) and
maintains a cabin altitude - the altitude equivalent kept inside the
cockpit or cabin of an aircraft - of between 28,000 and 30,000 feet.
...."

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Steve Hix
Guest





PostPosted: Wed Aug 21, 2013 12:51 pm    Post subject: Re: U2 pilots suffer brain damage. Reply with quote



In article <kv2fjk$n7u$1 (AT) speranza (DOT) aioe.org>, Vaughn <vaughnsimon (AT) gmail (DOT) com>
wrote:

Quote:
The brain damage is associated with prolonged operation at very high
cabin altitudes. Therefore, it could apparently be alleviated with more
cockpit pressurization, but that would require a complete cockpit
redesign and likely add weight unless advanced materials ($$$) were used.

This sounds like a great argument for UAV's.

Vaughn

http://www.medicalnewstoday.com/articles/265036.php

"Aviators piloting aircraft at very high altitudes for the military have
"significantly more" brain lesions known as white matter
hyperintensities, US Air Force medical researchers have found through
MRI scanning.
The study, published in Neurology, compared the MRI images from 102 USAF
pilots of the U-2 reconnaissance aircraft with brain scans from 91
controls matched for age, health and education levels.
The U-2 Dragon Lady is an aircraft made by Lockheed Martin, originally
designed to go high enough to evade destruction by Soviet anti-aircraft
fire during surveillance missions in the Cold War.

It flies at altitudes above about 69,000 feet (above 21,000 meters) and
maintains a cabin altitude - the altitude equivalent kept inside the
cockpit or cabin of an aircraft - of between 28,000 and 30,000 feet.
..."

On the other hand, the lesions could be the result of increased exposure to
cosmic radiation at altitude. Or a combination of both. Or neither, but a result
of exposure to something they've been eating.
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Jim Wilkins
Guest





PostPosted: Fri Aug 23, 2013 9:44 am    Post subject: Re: U2 pilots suffer brain damage. Reply with quote

"Steve Hix" <sehix (AT) NOSPAMmac (DOT) comINVALID> wrote in message
news:sehix-2B09FE.07514221082013 (AT) 5ad64b5e (DOT) bb.sky.com...
Quote:
In article <kv2fjk$n7u$1 (AT) speranza (DOT) aioe.org>, Vaughn
vaughnsimon (AT) gmail (DOT) com
wrote:

The brain damage is associated with prolonged operation at very
high
cabin altitudes. Therefore, it could apparently be alleviated with
more
cockpit pressurization, but that would require a complete cockpit
redesign and likely add weight unless advanced materials ($$$) were
used.

This sounds like a great argument for UAV's.

Vaughn

http://www.medicalnewstoday.com/articles/265036.php

It flies at altitudes above about 69,000 feet (above 21,000 meters)
and
maintains a cabin altitude - the altitude equivalent kept inside
the
cockpit or cabin of an aircraft - of between 28,000 and 30,000
feet.
..."

On the other hand, the lesions could be the result of increased
exposure to
cosmic radiation at altitude. Or a combination of both. Or neither,
but a result
of exposure to something they've been eating.

WW2 bomber crews flew at that pressure but with more atmospheric
shielding. Airliners operate at higher altitude, with cabin pressures
maintained below 10,000'. Comparing them should show if the effect is
from pressure or radiation (or the food).
jsw
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Keith W
Guest





PostPosted: Fri Aug 23, 2013 4:17 pm    Post subject: Re: U2 pilots suffer brain damage. Reply with quote

Jim Wilkins wrote:
Quote:
"Steve Hix" <sehix (AT) NOSPAMmac (DOT) comINVALID> wrote in message
news:sehix-2B09FE.07514221082013 (AT) 5ad64b5e (DOT) bb.sky.com...
In article <kv2fjk$n7u$1 (AT) speranza (DOT) aioe.org>, Vaughn
vaughnsimon (AT) gmail (DOT) com
wrote:

The brain damage is associated with prolonged operation at very
high
cabin altitudes. Therefore, it could apparently be alleviated with
more
cockpit pressurization, but that would require a complete cockpit
redesign and likely add weight unless advanced materials ($$$) were
used.

This sounds like a great argument for UAV's.

Vaughn

http://www.medicalnewstoday.com/articles/265036.php

It flies at altitudes above about 69,000 feet (above 21,000 meters)
and
maintains a cabin altitude - the altitude equivalent kept inside
the
cockpit or cabin of an aircraft - of between 28,000 and 30,000
feet.
..."

On the other hand, the lesions could be the result of increased
exposure to
cosmic radiation at altitude. Or a combination of both. Or neither,
but a result
of exposure to something they've been eating.

WW2 bomber crews flew at that pressure but with more atmospheric
shielding. Airliners operate at higher altitude, with cabin pressures
maintained below 10,000'. Comparing them should show if the effect is
from pressure or radiation (or the food).
jsw

No airliner in service operates at above 69,000 ft, their
max operating height is more like 39,000 ft. Concorde used
to get up to 60,000 ft or so and they did worry about solar
activity with regard to radiation issues.

Keith
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Jim Wilkins
Guest





PostPosted: Fri Aug 23, 2013 6:22 pm    Post subject: Re: U2 pilots suffer brain damage. Reply with quote

"Keith W" <keithnospoofsplease (AT) demon (DOT) co.uk> wrote in message
news:mHNRt.283521$q42.900 (AT) fx15 (DOT) fr7...
Quote:
Jim Wilkins wrote:

WW2 bomber crews flew at that pressure but with more atmospheric
shielding. Airliners operate at higher altitude, with cabin
pressures
maintained below 10,000'. Comparing them should show if the effect
is
from pressure or radiation (or the food).
jsw

No airliner in service operates at above 69,000 ft, their
max operating height is more like 39,000 ft. Concorde used
to get up to 60,000 ft or so and they did worry about solar
activity with regard to radiation issues.

Keith

http://www.swpc.noaa.gov/info/RadHaz.html
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Keith W
Guest





PostPosted: Fri Aug 23, 2013 6:55 pm    Post subject: Re: U2 pilots suffer brain damage. Reply with quote

Jim Wilkins wrote:
Quote:
"Keith W" <keithnospoofsplease (AT) demon (DOT) co.uk> wrote in message
news:mHNRt.283521$q42.900 (AT) fx15 (DOT) fr7...
Jim Wilkins wrote:

WW2 bomber crews flew at that pressure but with more atmospheric
shielding. Airliners operate at higher altitude, with cabin
pressures
maintained below 10,000'. Comparing them should show if the effect
is
from pressure or radiation (or the food).
jsw

No airliner in service operates at above 69,000 ft, their
max operating height is more like 39,000 ft. Concorde used
to get up to 60,000 ft or so and they did worry about solar
activity with regard to radiation issues.

Keith

http://www.swpc.noaa.gov/info/RadHaz.html

Indeed and as it points out a large solar event is rare but if it
happens the radiation dose rate rises by an order of magnitude
from a max of 20 micro sieverts per hour to 200
micro sieverts per hour and at the altitude Concorde
flew it was estimated that in a worst case scenario it
could peak at around 500 micro sieverts per hour.

Now even at this level its unlikely to cause any problems
for an adult passenger but it is approaching danger limits
for the foetus a female passenger might be carrying.

As a result the BA operations centre monitored the feeds
from solar observatories so as to be able to divert or
cancel any flights at a period of peak activity. British
Airways Concorde's were also fitted with dosimeters
to monitor actual radiation dosages.

see http://rpd.oxfordjournals.org/content/91/4/365.abstract

Keith
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