time of useful consciousness


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time of useful consciousness

The period between the loss of oxygen supply (at altitude) and the inability of the individual to function efficiently.
References in periodicals archive ?
Air Force defines the time of useful consciousness (TUC) as "the period of time from the loss of oxygen supply or exposure to an oxygen-poor environment to the time when deliberate function is lost.
Time of Useful Consciousness Altitude Exposure Time FL430 9-12 seconds FL400 15-20 seconds FL350 30-60 seconds FL300 1-2 minutes FL280 2.
Functional time is the predicted time of useful consciousness, but let's face it, if you're unconscious in a normal sea state, your chances of survival begin to approach zero.
Time of Useful Consciousness (TUC) is defined as the amount of time an individual is able to perform flying duties efficiently in an environment of inadequate oxygen supply.
Time of useful consciousness is the likely point where you will lose that conscious control Together, they effectively identify the amount of time an individual has from the interruption of supplemental oxygen (or exposure to a low oxygen environment) to the time when the pilot essentially will succumb to the effects of hypoxia and become an oxygen-starved nincompoop incapable of self-rescue.
The time of useful consciousness or TUC (the period from the exposure to an O2-deprived environment, to the time when useful function is lost) at FL280 is roughly three minutes.