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Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center

International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001. Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA. Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center.

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Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center

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  1. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA Engine Nacelle Halon Replacement,FAA, WJ Hughes Technical Center Point of Contact : Doug Ingerson Department of Transportation Federal Aviation Administration WJ Hughes Technical Center Fire Safety Section, AAR-422 Bldg 205 Atlantic City Int'l Airport, NJ 08405 USA tel: 609-485-4945 fax: 609-485-7074 email: Douglas.A.Ingerson@tc.faa.gov web page: http://www.fire.tc.faa.gov/

  2. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA PROGRESS/CURRENT STATUS Three Major Topics for Review : Fire Extinguisher Test Section Gas Analyzer

  3. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA • PROGRESS/CURRENT STATUS • Fire Extinguisher • Equilibrium subsystem being added • N2/agent mixture will be stabilized in this subsystem and then moved into the firex for pretest conditioning • the N2/agent solubility interaction will attain completion in a more controlled manner • removes the interaction from the detrimental exposure of the temperature extremes found in the firex • will minimize a circumstance potentially capable of producing inconsistent test results • Firex leak identified • bad seals found in the 1-1/4” releasing valve (pneumatically operated ball valve) • repair kit ordered; due on-site by Aug ‘01 • repair will be performed immediately upon receipt of parts

  4. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA PROGRESS/CURRENT STATUS Fabricating the equilibrium subsystem

  5. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA • PROGRESS/CURRENT STATUS • Test Section • Spray hot plate failed 8May01 during warm-up for fire sensitivity evaluations • problem found and corrected • pool hot plate corrected also • operational once again 20June01 • Fuel flow characterization for the spray and pool fire scenarios underway

  6. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA • PROGRESS/CURRENT STATUS • Test Section (continued) • Fire sensitivity evaluations to occur for both fire scenarios between now and 10October01 • purpose • rank combustion intensity dependent upon varying configurations for each fire scenario • provide experience with the fire scenarios • potentially ease the search for a “robust fire” • the evaluation of the residual scenario will include considerations for : • freeboard (lip) height above the fuel • pool surface area • the orientation of the pool surface area • the evaluation of the spray scenario will focus on the combustion intensity as a function of the spatial relationship between the fuel nozzles and the associated engine core rib located downstream

  7. PROGRESS/CURRENT STATUS • Halonyzer II Modification • Currently on-going • problem solved • current device acceptably behaved during recent bench-top evaluation • the final configuration of the device is in fabrication • expect operational device in 4-6 weeks • Calibration to be accomplished after device is completely assembled • Device maintains original design concept • no excessive proof-of-concept required • no difficulty expected in acquiring test data International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA

  8. International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA PROGRESS/CURRENT STATUS Bench-top configuration of the “new” analyzer

  9. 10.5” 20.4” 17.8” International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA PROGRESS/CURRENT STATUS Perspective View, New Connectivity Box for the Halonyzer II

  10. Signal handling circuitry Cooling fan A-D boards Releasing Controls Power Supply International Aircraft Systems Fire Protection Working Group Wilson, NC 17-18July2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA PROGRESS/CURRENT STATUS Internal View, New Connectivity Box for the Halonyzer II

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