[Dashing Dasher]

I was lucky enough to get to "ride" in the Chamber at Beale AFB a few years ago.

I was fine at 18K - able to do math problems and had dexterity in my hands, etc. But at 25K, I was goofy and probably would lose consciousness.

Interesting experience - if anyone gets a chance to try it.

[sargunner]

DD,

While in the AF, we used to have to qualify annually in the alt. chamber. 25K is about where everyone starts acting goofy. After returning to sea level you get to review some of your written work. It's amazing how you deteriorate with oxygen deprivation, even when you thought you were doing well.
The chamber will also reveal things like dental problems. Sometimes a person will have neurotic/paranoid episodes during a ride and of course is cause for removal from flight status. Due to the imbalance of body pressure and ambient external pressure it is highly recommended to refrain from eating certain gas-producing food prior to the ride. LOL

[IonImplantGuru]

I was lucky enough to get to "ride" in the Chamber at Beale AFB a few years ago.

Was that when they were still flying Blackbirds out of Beale?