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Records 281 to 285 of 733

Title: Methods to Calculate the Response Time of heat and Smoke Dectectors Installed Below Large Unobstrructed Ceilings
Author: David D. Evans, David W. Stroup
Abstract: Recently developed methods to calculate the time required for. ceiling mounted heat and smoke detectors to respond to growing fires are reviewed. A computer program, that calculates activation times for both fixed temperatures and rate of rise heat detectors in response to fires that increase in heat release rate proportionally with the square of time from ignition is given. This program produces equivalent resu1ts to the tables published in Appendix C, Guide for Automatic Fire Detector Spacing, (NFPA 72E, 1984). A separate method and corresponding program are provided to calculate response time for fires having arbitrary heat release rate histories. This method is based on quasi-steady ceiling layer gas flow assumptions. Assuming a constant proportionality between smoke and heat release from burning materials, a method is described to calculate smoke detector response time modeling the smoke detector as a low temperature heat detector in either of the two response time models.
Report: NBSIR 85-3167 Pages: 48 Size: 6.25 MB
Title: Suppression and Control of Class C Cargo and Compartment Fires
Author: David R. Blake
Abstract: A total of 23 fire tests were conducted in a 2357-cubic foot simulated class C cargo compartment. Various lining materials, fire sources, loading configurations, and smoke detectors were used to determine the ability of class C cargo compartments to control fires. The simulated class C compartment did not successfully control Bunsen burner test specified in FAR 25,855 does not assure that cargo liners will not burn through when subjected to realistic fires.
Report: DOT/FAA/CT-84/21 Pages: 31 Size: 1.08 MB
Title: Evaluation of Aircraft Interior Panels Under Full-Scale Cabin Fire Test Conditions
Author: C.P. Sarkos, R.G. Hill
Abstract: Realistic full-scale fire tests demonstrated the potential safety benefits of advanced interior panels in transport aircraft, and displayed the characteristics of cabin fire hazards. The tests were conducted in a C-133 airplane, modified to resemble a wide-body interior, under postcrash and in-flight fire scenarios. The safety benefit of the advanced panel ranged from 2-minute delay in the onset of flashover when the cabin fire was initiated by a fuel fire adjacent to a fuselage rupture, to the elimination of flashover when the fuel fire was adjacent to a door opening or when an in-flight fire was started from a seat drenched in gasoline. Analysis of the cabin hazards measured during postcrash fire tests indicated that the greatest threat to passenger survival was cabin flashover, and that toxic gases did not reach hazardous levels unless flashover occurred.
Report: FSR-0173 Pages: 7 Size: 505 KB
Title: Preliminary Evaluation of an Improved Flammability Test Method for Aircraft Materials
Author: Constantine P. Sarkos, Robert A. Filipczak, Allan Abramowitz
Abstract: Small-scale flammability test methods were evaluated by comparing data obtained on a series of interior honey-comb panels with fire test results obtained with a � scale cabin model.

Generally, the vertical Bunsen burner, limiting oxygen index and radiant panel test methods ranked the phenolic-faced panels higher (better performance) than the epoxy-faced panels. It appears as if these test methods, which employ relatively moderate exposure conditions, are reflecting the superior ignition resistance of the phenolics over the epoxies. Thus, these tests cannot predict the performance of materials that exhibit high burning rates when subjected to heating conditions above their ignition threshold. The heating conditions used in the Ohio State University (USC) apparatus, however, can be set at higher levels. At 5 watts/cm2, rank ordering materials based on peak heat release rate measured via oxygen depletion in the OSU apparatus agreed with materials ranking in the � scale model. Based on he scope of this investigation, the OSU apparatus operated at these conditions and employing oxygen depletion calorimetry is the recommended improved fire test method for interior panels.
Report: DOT/FAA/CT-84/22 Pages: 47 Size: 2.02 MB
Title: Flammability Requirements for Aircraft Seat Cushions, Final Rule
Author: Department of Transportation
Abstract: These amendments establish new flammability requirements for seat cushions used in transport category aircraft certified under Part 25 and Part 29 and require that the cushions in transport category airplanes type certified after January 1, 1958, and operating under Part 121 comply with these new requirements after November 26, 1987. These new requirements are in addition to the present flammability requirements contained in the Federal Aviation Regulations and represent a significant advancement in aircraft fire safety.
Report: FSR-0108 Pages: 14 Size: 1.30 MB

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