Generation of Inerting Gases for Aircraft Fuel Tanks by Catalytic Combustion Techniques. Volume I.
Abstract
The feasibility of inerting the ullage spaces in aircraft fuel tanks via a catalytic combustion technique is evaluated. The technique utilizes nitrogen from the surrounding atmosphere as the principal component of the ballast gas admitted to the tanks. Free oxygen is reduced to safe levels by means of catalyzed reaction with a small fraction of the aircraft fuel. Before the combustion gases are admitted to the fuel tanks, the water content is reduced by condensation and by contact with a desiccant. Experiments were conducted to select and evaluate catalysts for the combustion reaction, and desiccants for water removal. Heat and material balances were prepared. Experimental and literature data were used for conceptual designs of inerting equipment that would provide target performance at all times (including powered dives) during missions typical of a tactical aircraft, a military transport, and the SST. Based on these unoptimized, preliminary designs, it was determined that complete inerting protection and control over the water admitted to the fuel tanks can be provided at a penalty of from 1.8% (transport) to 6.4% (tactical) of the initial fuel weight. These figures reflect industrial plant equipment weights, and substantial reductions are expected through use of flightweight equipment of optimized design. Recommendations are made for further study and development. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1969
- Accession Number
- AD0858839
Entities
People
- Arthur Perlmutter
- Ralph B. Wainright