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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Wharf Rat who wrote (1446201)	3/12/2024 8:06:57 PM
From: Eric	Respond to of 1573215

Yep, Supercritical if you have compromised lung function. I used to wear a cannula up to 18,000 feet then switched to a pressure demand mask above that while flying my "non pressurized" high performance sailplane. Pure compressed oxygen. (about 80 cuft, 2500psi) All pilots have to have oxygen when flying above 12,500 feet for more than 30 minutes in a non pressurized aircraft. Blood oxygen saturation levels..... If your a licensed pilot with at least a FAA Third Class Medical you can get a chamber ride at an Air Force or Navy base that has low pressure chambers. Spent six hours there many years ago. Well worth the training to recognize the early symptoms and dangers of hypoxia. For civilians they only take you up to 25,000 feet vs 40,000 for military crews. The fun part was taking off the mask and see how long you could last without going unconscious. I'll never forget putting the pressure demand mask back on. My first inhalation and colors came back! Instantly.. I didn't realize I was seeing things in black and white!