Quote:
Originally Posted by philip.ed
I hope that this is useful information for you to use. A Hurricane pilot had the luxury of being able to wear an Irvin in the pit, but I would imagine this unlikely during the hot summer.
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The average enviromental lapse rate is about 2 Degrees C per 1000 feet. A nice summers day of lets say 30C at ground level turns into -10C at 20,000 feet.
I think I'ld want a Irvin jacket if I was on Patrol.
Cheers!