Engine Nacelle Halon Replacement, FAA WJ Hughes Technical Center

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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 [phone]
• fax [phone]
• email Douglas.A.Ingerson_at_tc.faa.gov
• web page http//www.fire.tc.faa.gov

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

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Simulator Status

• Activities in the near future
• 9May00 gt 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 gt robust fire search MPSE step II
• Planning 5 days minimum to attain goal
• Expecting difficulty in finding the "right fire"
• ??May00 gt replacement fire challenge MPSE step
  III
• Planning 5 days minimum to attain goal
• Expecting difficulty in quantifying the mass
  needed to succeed
• ? gt Quantify concentration with analyzer MPSE
  step IV
• 1 day to perform
• simplest part of the process
• ? gt begin full MPSE procedure for CF3I

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Simulator Characterization,AirflowBehavior
Corresponds to 2.6 lbm/s 21 ac/min _at_ 58F 25
ac/min _at_ 150F
Corresponds to 3.8 lbm/s 30 ac/min _at_ 58F 35
ac/min _at_ 130F
NSe00411
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Simulator Characterization,Test Section Average
Airflow Temperature
NSe00410
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Simulator Characterization,Spray Fire Scenario
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