Patent ID: 8245978
Filing Date: 2012-08-21
Classification: A62C,B01D,B60K,B64D,Y02T,Y10T

Abstract:
1. A method for inserting an aircraft fuel tank, said method comprising the steps of: (a) contacting compressed air with one or more first membrane modules at conditions effective to produce a first nitrogen-enriched air stream; (b) introducing said first nitrogen-enriched air stream into said fuel tank during periods of low demand for nitrogen-enriched air; (c) contacting compressed air with one or more second membrane modules at conditions effective to produce a second nitrogen-enriched air stream; and (d) introducing said second nitrogen-enriched air stream into said fuel tank during periods of high demand for nitrogen-enriched air, wherein said first membrane modules have a lower O wherein at least one of said first nitrogen-enriched air stream and said second nitrogen-enriched air stream is introduced directly into the fuel in said fuel tank at conditions effective to liberate at least a portion of dissolved O