Engine Nacelle Halon Replacement FAA WJ Hughes Technical

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: fax: email: web page: 609 -485 -4945 609 -485 -7074 Douglas. A. Ingerson@tc. faa. gov http: //www. fire. tc. faa. gov/ International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 i N 2/agent mixture will be stabilized in this subsystem and then moved into the firex for pretest conditioning i the N 2/agent solubility interaction will attain completion in a more controlled manner i removes the interaction from the detrimental exposure of the temperature extremes found in the firex i will minimize a circumstance potentially capable of producing inconsistent test results #Firex leak identified i bad seals found in the 1 -1/4” releasing valve (pneumatically operated ball valve) i repair kit ordered; due on-site by Aug ‘ 01 i repair will be performed immediately upon receipt of parts International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 8 May 01 during warm-up for fire sensitivity evaluations i problem found and corrected i pool hot plate corrected also i operational once again 20 June 01 #Fuel flow characterization for the spray and pool fire scenarios underway International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 10 October 01 i 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” i 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 i 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 International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA

PROGRESS/CURRENT STATUS >Halonyzer II Modification #Currently on-going i problem solved i current device acceptably behaved during recent bench-top evaluation i the final configuration of the device is in fabrication i expect operational device in 4 -6 weeks #Calibration to be accomplished after device is completely assembled #Device maintains original design concept i no excessive proof-of-concept required i no difficulty expected in acquiring test data International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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 International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 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. 17. 8” International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 5” ” . 4 20 Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA

Signal handling circuitry PROGRESS/CURRENT STATUS Internal View, New Connectivity Box for the Halonyzer II Cooling fan Power Supply International Aircraft Systems Fire Protection Working Group Wilson, NC 17 -18 July 2001 A-D boards Releasing Controls Federal Aviation Administration WJ Hughes Technical Center, Fire Safety Section, AAR-422 Atlantic City Int'l Airport, NJ 08405 USA