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Low Fuel Load Flammability Work

Low Fuel Load Flammability Work. Steve Summer Project Engineer Federal Aviation Administration Fire Safety Branch. International Aircraft Systems Fire Protection Working Group Ottawa, Canada February 15 – 16, 2005. Objectives.

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Low Fuel Load Flammability Work

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  1. Low Fuel Load Flammability Work Steve Summer Project Engineer Federal Aviation Administration Fire Safety Branch International Aircraft Systems Fire Protection Working Group Ottawa, Canada February 15 – 16, 2005 IASFPWG – Ottawa, Canada

  2. Objectives • Previous tests have shown that in order to see a significant decrease in flammability, the mass loading of the tank must be driven down to 0.25 kg/m3 or less. • If it were feasible to do this though, would fuel leaking in from other tanks be counterproductive to the flammability reduction. IASFPWG – Ottawa, Canada

  3. Apparatus • Utilizing same tank as was used in the fuel condensation modeling work. • Peristaltic pump used to pump fresh fuel into tank such that it sprays in at far side and traverses the entire bottom of the tank. • Fuel inside of tank is continuously drained at approximately the same rate that fresh fuel is entering (~0.3 LPM). • Bottom heater temperature is maintained at 180ºF for approximately 1.5 hours. IASFPWG – Ottawa, Canada

  4. Apparatus Fuel Spray Drain IASFPWG – Ottawa, Canada

  5. Results IASFPWG – Ottawa, Canada

  6. Conclusion • Flow of fresh fuel across the heated bottom surface of a tank negate the effects of a low fuel load by increasing THC (flammability) by a factor of 2.5 - 4. IASFPWG – Ottawa, Canada

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