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Aircraft Fuel Tank Flammability Reduction Method and System

  • US 20140053726A1
  • Filed: 08/24/2012
  • Published: 02/27/2014
  • Est. Priority Date: 08/24/2012
  • Status: Active Grant
First Claim
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1. An aircraft fuel tank flammability reduction method comprising:

  • feeding pressurized air into an air separation module containing a carbon membrane, the air feed exhibiting a normal pressure of no more than 55 psig and the carbon membrane containing at least 95 weight percent carbon;

    contacting the carbon membrane with the air feed, permeating oxygen from the air feed through the carbon membrane, and producing nitrogen-enriched air from the air separation module as a result of removing oxygen from the air feed; and

    feeding the nitrogen-enriched air into the fuel tank on board the aircraft.

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