Aircraft aircrew life support systems

Details Aircraft aircrew life support systems Aircraft aircrew life support systems

1989-05-04

1990-10-02

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820125, 12820128, 12820211, A62B 714, A62B 708, A62B 702

Patent

active

049601199

ABSTRACT:
Oxygen-enriched breathable gas for breathing by aircrew is delivered by an on-board oxygen generating system 11 utilizing molecular sieve adsorber beds 12. The breathable gas is compressed by a compressor 17 and supplied by way of an appropriately switched two-way valve 25 to a plenum storage tank 30 from which it is withdrawn for breathing by aircrew during normal flight operations. The two-way valve may be switched by electronic control means 15 to connect the compressor with an aircrew seat mounted emergency storage bottle 40 when breathable gas of maximum oxygen concentration is being delivered by the OBOGS and the pressure in the emergency storage bottle is sensed to have fallen below a designated value. This reduces the system servicing requirements and minimizes the size of the system components, in particular the adsorber beds.

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patent: 4651728 (1987-03-01), Gupta et al.
patent: 4870960 (1989-10-01), Hradek

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