O2 Mask On Pilot?

"Stefan" wrote in message
...
GeorgeB wrote:

What would have been the effect if the O2 bottle for the cockpit had
been inadvertently filled with breathing air rather than O2?

They would have tested the system before the flight and found it working.
They would have put on their mask in flight and thought it worked, slowly
fading away without recognizing it. You may or may not recognize hypoxia
when you suspect it and really watch your body, you definitely don't
recognize it when you're unwary.


The question was what happens when breathing air from the mask rather than
O2 and the answer is nothing at all at a cabin pressure of 10K feet.

fred wrote:

The question was what happens when breathing air from the mask rather than
O2 and the answer is nothing at all at a cabin pressure of 10K feet.

Got me :-). On the other hand, if the bottels were filled with say N2
instead of O2, they would still have faded away even at 10 kft. Further
speculations?

Stefan

"Stefan" wrote in message
...
fred wrote:

The question was what happens when breathing air from the mask rather
than O2 and the answer is nothing at all at a cabin pressure of 10K feet.

Got me :-). On the other hand, if the bottels were filled with say N2
instead of O2, they would still have faded away even at 10 kft. Further
speculations?

Yes and pure N2 is faster than air at 35,000.

fred wrote:

The question was what happens when breathing air from the mask rather than
O2 and the answer is nothing at all at a cabin pressure of 10K feet.

But the question was asked about pilots that were at 35,000'. I believe that
George B. is correct that the partial pressure would be too low and the pilots
would pass out.

George Patterson
Give a person a fish and you feed him for a day; teach a person to
use the Internet and he won't bother you for weeks.