FIELD: respiratory systems of flying vehicles. SUBSTANCE: method is based upon drying initial mixture, which is treated till achieving 1-15 MPa pressure. Then mixture is fed into membrane apparatus, which has hollow fibers. After that, mixture is separated to two streams, one of of which is enriched in oxygen, and the other one is depleted in oxygen. Then enriched oxygen is fed into the second membrane apparatus, and mixture is separated to two streams, and depleted stream is fed into input of the first apparatus. Process of separation is carried out at pressure relation being equal to 20-200 at both sides of the membrane. EFFECT: improved efficiency. 1 dwg
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