How Airplane Oxygen Masks Work Given They Aren't Hooked to Tanks & How Planes Get Oxygen at Altitude

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Ever wonder why the plastic bag attached to the drop down emergency airplane oxygen masks don't necessarily inflate? Well, wonder no more- it turns out how this system works is extremely interesting. To begin with, because the economics of having large oxygen tanks aboard airliners simply doesn’t work out (not to mention that the air quality inside the plane would rapidly become unpleasant if fresh air wasn’t constantly supplied, regardless of the oxygen levels), commercial airplanes have a very clever system installed to solve the problem of ultra-low pressure atmosphere at cruising altitudes....

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