Aircraft aircrew life support systems

Details Aircraft aircrew life support systems Aircraft aircrew life support systems

A - Human Necessities

62

B

137/1.5

A62B 7/14 (2006.01)

Patent

CA 1295530

ABSTRACT Title: Aircraft Aircrew Life Support Systems Oxygen-enriched breathable gas for breathing by aircrew is delivered by an on-board oxygen generating system 11 utilising molecular sieve adsorber beds. The breathable gas is compressed by a compressor and supplied by way of an appropriately switched two-way valve to a plenum storage tank from which it is withdrawn for breathing by aircrew during normal flight operations. The two-way valve may be switched by electronic control means to connect the compressor with an aircrew seat mounted emergency storage bottle 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 minimises the size of the system components, in particular the adsorber beds.

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