On Sep 13, 3:33 am, "Atheist Chaplain"
cia.gov> wrote:>
>>>> "Ned"
aioe.org> wrote in messagenews:gadt3s$b8p$1@aioe.org...>>>>> From CNN - A U.S. Air Force pilot has landed a plane in Antarctica in
>>>>> the dark for the first time using night-vision goggles, a feat that
>>>>> could lead to more supply flights to scientific bases in the frozen
>>>>> continent during its dark winter months, officials said Friday.
>
>>>>> The C-17 Globemaster cargo airplane landed in a driving snowstorm on
>>>>> the 10-kilometer (six mile) ice runway at the U.S. Antarctic research
>>>>> center at McMurdo Station, after months of practice runs by pilots
>>>>> using the goggles.
>
>>>> Can NVG's see through a driving snow storm?
>
>>>> Graham
>
>>> Good question. And with the aircraft's landing lights on, the amount of
>>> reflected light from the snow-flakes would normally overwhelm the
>>> goggles. I know from personal experience that NVGs aren't that great when
>>> using them in heavy rain and active illumination.
>
>> Which was pretty much what I was thinking.
>
>> Graham
>
>>> --
>>> "Those who beat their swords into ploughshares will plough for those who
>>> didn't".
>
> High intensity IR LED's in the landing lights would do the job quite well
> without having to worry about the reflected active illumination from the
> main landing lights, in conjunction with IR reflectors (as used on the back
> of most military vehicles in night time full tactical situations) would
> finish the job,
"Hell I have been doing some experiments with IR stuff for
the last couple of months, and it would seem pretty trivial"
http://www.wunderground.com/global/stations/89009.html
MILspec goes to -40. I had a freezer to test electronics
that went lower, wires shatter, metal brittles. You'll need
to extend your specs to -120F.
Ken
