Simulating the Distribution of Halon 1301 in an Aircraft Engine Nacelle with HFC-125

Details

• Creators:
  Ingerson, D. A.
• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Fire Safety Section
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research
• Subject/TRT Terms:
  Air Engines Air Pollution Certification Fire Extinguishing Agents Gas Distribution Halon 1301 HFC-125 Pentafluoroethane Pollution Control
• Publication/ Report Number:
  DOT/FAA/AR-TN99/64
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Technical Notes
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
• Abstract:
  The primary fire suppressant used in commercial aircraft engine nacelles and auxiliary power units is Halon 1301. The period of fire suppression system development and its certification testing may be an arduous task requiring the discharge of substantial quantities of fire suppressant. Additionally, to demonstrate compliance with federal regulations, engine nacelle fire suppression systems are discharged in flight or at varying conditions simulating flight. These tests are recorded and evaluated with specialized gas analysis equipment. Currently, the certification process requires releasing Halon 1301 to accomplish such approvals. Based on the Montreal Protocol and its amendments, the halon family of fire suppressants has been eliminated from production. This action is in response to the destructive capacity of halon with respect to the ozone layer within the atmosphere. his technical note describes a procedure for utilizing an ozone-friendly simulant during fire suppression system development and certification testing. It demonstrates a realistic potential to eliminate the release of Halon 1301 for purposes other than actual fire suppression. his step is perceived as an interim process to assist with the reduction of Halon 1301 release during the transition to chemicals which meet the intent of the Montreal Protocol.
• Format:
  PDF
• Collection(s):
  FAA William J. Hughes Technical Center for Advanced Aerospace
• Main Document Checksum:
  urn:sha-512:2ba674ac69457131f828e1bb2bfe076500e31bcf0c4931e08bf1afb48164f3886d183a9d8f3538eea95e806c29af9990a4bfe0123f611b2bca52fd79a5fb4c30
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/90181/dot_90181_DS1.pdf
• File Type:
  [PDF - 1.41 MB ]