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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• PROGRESS/CURRENT STATUS
• Three Major Topics for Review
• Fire Extinguisher
• Test Section
• Gas Analyzer

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• 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

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PROGRESS/CURRENT STATUS
Fabricating the equilibrium subsystem
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• 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

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• 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

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• 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

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PROGRESS/CURRENT STATUS
Bench-top configuration of the new analyzer
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PROGRESS/CURRENT STATUS
Perspective View, New Connectivity Box for the
Halonyzer II
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PROGRESS/CURRENT STATUS
Internal View, New Connectivity Box for the
Halonyzer II