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Thin Film Permeable Membranes for Inert Gas Generation
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English
Abstract
A new ultrathin-backed semipermeable membrane has been developed which shows considerable promise as a gas separator for engine bleed air to provide nitrogen-rich air for aircraft fuel tank inerting. The membrane is a silicone, polycarbonate copolymer of 1500 Å effective thickness, deposited on a reinforced porous backing. The selective removal of oxygen provides oxygen concentrations of less than 9% in the inerting gas. Small-scale testing demonstrated that the backed membranes are suitable in the aircraft environment. A system using such membranes avoids the logistic and service requirements of tanked liquid nitrogen.
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Authors
Citation
Browall, W., Harrison, J., and Salemme, R., "Thin Film Permeable Membranes for Inert Gas Generation," SAE Technical Paper 740855, 1974, https://doi.org/10.4271/740855.Also In
References
- Haddad J. McAdoo W. C. Ball O. E. “Service Experience with Liquid Nitrogen Fuel Tank Inerting System in FAA DC-9 Aircraft N119.” Federal Aviation Administration Flight Standards Service Washington, D.C. June 1972
- Kesting R. E. “Synthetic Polymer Membranes.” New York McGraw Hill 1971 78
- Vaughn H. A. Polymer Letters 7 1969 569