Accession Number : ADA117448

Title :   A Combined Hazard Index Fire Test Methodology for Aircraft Cabin Materials. Volume I.

Descriptive Note : Final rept. Sep 77-Nov 81,


Personal Author(s) : Spieth,H H ; Gaume,J G ; Luoto,R E ; Klinck,D M

PDF Url : ADA117448

Report Date : Apr 1982

Pagination or Media Count : 168

Abstract : This report describes a laboratory test method and the modeling of the resultant data to produce a means of ranking aircraft cabin materials for the combined hazards produced in a survivable post-crash fire. Ranking is based on reducing each hazard accumulating in a cabin during a 5-minute crash fire scenario to the common denominator of a passenger escape time. Combined Hazards Index (CHI) is expressed as the number of seconds of scenario burn time at which the sum of the fractional hazards doses reaches an escape limit. All data was obtained using a computer-augmented Ohio State University Calorimeter modified to measure the major combustion gases in addition to heat and smoke as a material burns. A computerized fire analysis model was developed to predict cabin environmental hazards from the laboratory data. A human survival model relating short term hazard dose to incapacitation time was incorporated in this program. The changing cabin environment was compared continuously with the human survival model limits to calculate the unaided escape time ranking for each material.

Descriptors :   *Aircraft cabins, *Fire safety, *Fire hazards, *Aviation safety, Aviation accidents, Crashes, Aircraft fires, Test methods, Scenarios, Computer applications, Measurement, Calorimeters, Materials, Burning rate, Combustion products, Escape systems, Reaction time, Survival(Personnel), Computerized simulation, Computer programs, Laboratory tests

Subject Categories : Aircraft
      Computer Programming and Software
      Safety Engineering
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE