demand oxygen system
- An oxygen system in which oxygen is supplied only when the wearer inhales. This is as opposed to a continuous flow oxygen system, in which oxygen is constantly supplied irrespective of whether the person is inhaling or exhaling.A typical demand oxygen system of a combat aircraft fit for very high altitude operation.
Aviation dictionary. 2014.
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pressure demand oxygen system — A demand oxygen system that supplies diluted oxygen at lower heights and 100% oxygen under pressure at higher heights. The oxygen under pressure is forced into the lungs of the wearer. See demand oxygen system … Aviation dictionary
diluter-demand oxygen system — An aircraft oxygen system that delivers mixed, or diluted with air, oxygen to maintain a constant partial pressure of oxygen as the altitude changes. The system allows 100% oxygen to be supplied in an emergency. See also demand oxygen system … Aviation dictionary
constant-flow oxygen system — An oxygen system in which oxygen is fed to the crew at a steady rate, unlike the demand system, in which oxygen is supplied only on demand. Also called a continuous flow oxygen system … Aviation dictionary
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