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Records 226 to 230 of 733

Title: Airplane Tests of Enhanced Emergency Smoke Venting
Author: Elliott L. Maylor
Abstract: This airplane test program evaluated the capability of certain air conditioning (environmental control) system modifications to enhance the venting of neutral or buoyant smoke that may be continuously injected into the passenger cabin during an inflight fire emergency. The program used a Boeing 757 airplane modified by adding an outflow valve in the forward upper lobe fuselage and changing to high-flow control valves in both air conditioning packs. Artificially generated smoke, neutral and with helium added to simulate buoyancy, was released at various passenger cabin locations. Data from the ground tests showed that an upper lobe overflow valve control either neutral or buoyant smokes. Cruise/descend/land test results showed that neutral smoke can be controlled with either an upper or lower lobe outflow valve if the outflow valve and the smoke source are at the same end of the passenger cabin; this capability is not changed significantly by a 30% increase to the current pack flow rate. The results also showed that maintaining pack flow while doors are open for passenger evacuation causes an undesirable increase in the rate of smoke spreading into the smoke free portions of the cabin.
Report: DOT/FAA/CT-89/9 Pages: 61 Size: 11.6 MB
Title: Placement of Smoke Detector Ports Within Cargo Liners
Author: Timothy Marker
Abstract: Tests were conducted on the cargo liner burnthrough apparatus whereby holes of various diameters were drilled into Conolite liners at three different locations of the ceiling position. The tests were conducted to investigate the likelihood of fire containment in the event that surface mounted smoke detector ports should fail during a fire.
Report: DOT/FAA/CT-TN89/17 Pages: 7 Size: 167 KB
Title: Effectiveness of Protective Breathing Equipment Filter in Full-Scale Fire Test
Author: Allison Devine
Abstract: This report contains the results of measurements to determine the effectiveness of a protective breathing equipment filter. Measurements of gas levels were made both filtered and unfiltered cabin air during a full-scale C-133 fire test. Measurements of airflow through the filter and pressure differentials across the filters were made to determine the effect, if smoke particulate clogging.
Report: DOT/FAA/CT-TN89/8 Pages: 12 Size: 1.35 MB
Title: Measurement Errors For Thermocouples Attached To Thin Plates: Application To Heat Flux Measurement Devices
Author: K.B. Sobolik, N. Keltner
Abstract: Unsteady Surface Element (USE) methods are applied to a model of a thermocouple wire attached to thin disk. Green�s functions are used to develop the integral equations for the wire and the disk. The model can be used to evaluate transient and steady state responses for many types of heat flux measurement devices including thin skin calorimeter and circular foil (Gardon) heat flux gages. The model can accommodate either surface or volumetric heating of the disk. The boundary condition at the outer radius of the disk can be either insulated or constant temperature. Effect on the errors of geometrical and thermal factors can be assessed.
Report: FSR-0169 Pages: 7 Size: 468 KB
Title: The Radioactive Convective Partitioning Of Heat Transfer To Structures In Large Pool Fires
Author: J.T. Nakos, N. R.. Keltner
Abstract: This paper explores the relative contributions of radioactive and convective heat transfer to structures (like shipping containers) in large pool fires. Results include measurements of the temperature of two structures (called �calorimeters�) in the fire, the flames surrounding the calorimeters, the total heat flux to the calorimeters and the radioactive component of the heat transfer at a few locations using transpiration radiometers. These measurements will be compared with calculations. Agreement between the measured radioactive heat flux and the calculated radioactive heat flux is good. The objective contribution was calculated from the total and radioactive parts and was found to be about 10-20% of the total.
Report: FSR-0097 Pages: 7 Size: 590 KB

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