Development and Evaluation of an Airplane Fuel Tank Ullage Composition Model. Volume 2. Experimental Determination of Airplane Fuel Tank Ullage Compositions
Final rept. Nov 1985-Dec 1986
BOEING MILITARY AIRPLANE CO SEATTLE WA
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The development and evaluation of a computer model designed to predict the composition of airplane fuel tank ullage spaces is documented in two volumes. Volume I - Airplane Fuel Tank Ullage Computer Model A detailed mathematical description of the model as it relates to the physical processes governing the ullage of an airplane fuel tank is included, along with user instructions and examples. Extensive comparisons of computer model predictions to experimental data are included. The model is interactive and can be used on a variety of computers including personal computers. Volume II - Experimental Determination of Airplane Fuel Tank Ullage Compositions Experimental work conducted using a fuel tank simulator to investigate the composition of airplane fuel tank ullage spaces is described. The investigations include ullage mixing by diffusion and convection, oxygen evolution during simulated climbs and refueling and complete mission simulations. Keywords Fuel tank, Nitrogen- enriched air, Stratification, Ullage, Oxygen evolution, Mission simulation, Inerting, Diffusion.