DAYTON AIRCRAFT CABIN FIRE MODEL. VOLUME I. BASIC MATHEMATICAL MODEL

A basic mathematical model and computer simulation program have been developed to assess the smoke and toxic gas emissions resulting from the burning of cabin interior materials of a wide-body transport aircraft in a full-scale fire based on laboratory test data on these materials. The mathematical model employs a technique of approximating the distribution of burning or smoldering regions on combustible materials by dividing the surface of the material into square area elements. The combustion behavior of a material is modeled by the allowing of the area elements to exist in one of seven discrete states. The four primary states are the following: virgin (the original, unignited condition), smoldering (nonflaming thermal degredation), flaming (burning with open flaming), or charred (burned-out or inert). The other three states are intermediate states in the transition to or from one of the four primary states. Fire ignition; flame spread; release of heat, smoke, and toxic combustion products; and the eventual extinction of a fire are all predicted by specifying times of transition between the four primary states and by specifying flame spread rates. Transition times, flame spread rates and the smoke, heat, and toxic gas release rates are assumed to be known as functions of imposed heat flux from laboratory measurements on the specific materials and assemblies of an aircraft cabin interior. Smoke and toxic gas concentration within the cabin section of the fire origin are computed by a one-dimensional, dynamic, stratified model of the cabin atmosphere which includes buoyancy driven flow out of the cabin section through one or more doorways. The results of two sample runs of the simulation program are presented and analyzed.

  • Supplemental Notes:
    • See also Volume 2, AD-A033 683.
  • Corporate Authors:

    Dayton University

    Research Institute, 300 College Park Avenue
    Dayton, OH  United States  45409
  • Authors:
    • Reeves, J B
    • MacArthur, C D
  • Publication Date: 1976-6

Media Info

  • Pagination: 141 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00150731
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-RD-76-120-1 Final Rpt.
  • Contract Numbers: DOT-FA74WA-3532
  • Files: NTIS, TRIS
  • Created Date: Mar 30 1977 12:00AM