Engine Nacelle Halon Replacement, FAA WJ Hughes Technical Center Point of Contact :Doug Ingerson...

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: [email protected]

web page: http://www.fire.tc.faa.gov

International Halon Replacement Working GroupBremen, Germany 3-4 May 2000

Douglas Ingerson, Federal Aviation AdministrationWJ Hughes Technical Center, Fire Safety Section, AAR-422


Engine Nacelle Halon Replacement,Nacelle Simulator, Aft View Looking Forward




Engine Nacelle Halon Replacement,Nacelle Simulator, Forward View Looking Aft




Simulator Status

• Mechanical assembly of the simulator completed early April 2000

• Characterization on-going :– sub-system performance– air flow capacity (mass versus temperature)– fire scenario sensitivities (spray and pool)

• Planning the first trial of the MPSE– the first "iteration" will be performed with HFC-125

• HFC-125 is plentiful on-site• CF3I will be the first agent run against the full MPSE

– only one robust fire cycle will be run– performing this trial to "bug-out" procedures




Simulator Status

• Activities in the near future :

– 9May00 => distribution trial; MPSE step I• Expect 3-5 days to smooth procedure out and attain goal• HFC-125 simulation will be used to indicate an acceptable profile• Halon 1301 will be discharged to verify the results of the simulant effort

– 16May00 => robust fire search; MPSE step II• Planning 5 days minimum to attain goal• Expecting difficulty in finding the "right fire"

– ??May00 => replacement fire challenge; MPSE step III• Planning 5 days minimum to attain goal• Expecting difficulty in quantifying the mass needed to succeed

– ? => Quantify concentration with analyzer; MPSE step IV• 1 day to perform• simplest part of the process

– ? => begin full MPSE procedure for CF3I




Simulator Characterization,AirflowBehavior




NSe00411

Corresponds to :3.8 lbm/s

30 ac/min @ 58°F35 ac/min @ 130°F

Corresponds to :2.6 lbm/s

21 ac/min @ 58°F25 ac/min @ 150°F

Simulator Characterization,Test Section Average Airflow Temperature




NSe00410

Simulator Characterization,Spray Fire Scenario Image




Engine Nacelle Halon Replacement, FAA WJ Hughes Technical Center Point of Contact :Doug Ingerson...

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