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Records 211 to 215 of 733
| Title: |
Airplane Systems Modifications for Improved Cabin Smoke Evacuation |
| Author: |
Thor I. Eklund |
| Abstract: |
Two concepts for improved aircraft in-flight smoke evacuation were analyzed and tested. The concept definition and evaluation efforts involved an additional ventilation outflow valve on the aircraft underside along with either increased ventilation air volume from the engine compressors or a supplemental ram air supply. Subsequent test aircraft modification involved addition of a pressure controlling outflow valve on the top of the fuselage and upgraded engine bleed air volume flow for cabin air-conditioning. Ground and flight tests were conducted on a test B757 with buoyant and nonbuoyant theatrical smoke generated continuously in various places in the passenger cabin. Buoyant smoke could be localized only when generated in the vicinity of the upper lobe outflow valve. Nonbuoyant smoke could be localized only when generated in the vicinity of an outflow valve, whether the valve was on the top or bottom of the fuselage. The buoyant smoke was formulated to have the same type flow behavior as a plume from the visible flames of a burning surface. The nonbuoyant smoke might be more representative of a smoldering material. |
| Report: |
DOT/FAA/CT-TN90/24 |
Pages: |
19 |
Size: |
2.5 MB |
| Title: |
Tests of the General Fire Suppression Concentrate Pyrocap B-136 |
| Author: |
George B. Geyer, Joseph A. Wright, Dung Do, Lawrence Hampton |
| Abstract: |
Fire extinguishing effectiveness of the general fire suppression concentrate identified as Pyrocap B-136 was determined by laboratory experiments and large scale fire tests. This agent demonstrated strong emulsifying properties toward Jet A, kerosene fuel; JP-4, kerosene and gasoline fuel blend; and avgas, aviation gasoline fuel. At 6 percent concentration, Pyrocap B-136 extinguished large Jet A fuel fires when applied at the rate of 0.052 gallon per minute per square foot. At 30 percent concentration, the agent was effective in extinguishing magnesium aircraft wheel fires at a low application rate. |
| Report: |
DOT/FAA/CT-TN90/21 |
Pages: |
30 |
Size: |
4.11 MB |
| Title: |
Calibration Technique for Heat Flux Sensors Used in Fire Experiments and Standard Fire Tests |
| Author: |
K. Steckler, K. Tu, W. Tilley |
| Abstract: |
A means for calibrating total heat flux gauges using a comparative (substitution) technique has been established. An apparatus consisting of a reference radiometer, .a stable infrared radiant heater capable of producing flux levels up
to 3.7 W/cm2, and a precision alignment mechanism has been constructed. The reference radiometer was characterized by the Radiometric Physics Division of The . National Institute of Standards and Technology at flux levels in the range 0.8 mW/cm2 to 0.9 W/cm2. Its accuracy was found to be within 3 percent over this range which spans 3 orders of magnitude. As the radiometer is a highly linear thermocouple-based device having a self-calibration feature, this accuracy is expected to hold up to 4.2 W/cm , the upper limit of this device; Although the overall accuracy of calibrations performed in the new apparatus must still be established, it is expected to be within 3 to 5 percent. |
| Report: |
DOT/FAA/CT-89/26 |
Pages: |
32 |
Size: |
10.6 MB |
| Title: |
Flammability of Fire Resistant Aircraft Hydraulic Fluid |
| Author: |
David Blake |
| Abstract: |
This study was undertaken folowing a wheel-well fire in a 737 aircraft, Hydraulic fluid appeared to be the fuel for this fire. Twenty-six tests were conducted with Mosanto Skydrol 500B-4 and Chevron Hy-Jet IV-A fire resistant phosphate ester-based hydraulic fluid. The testing was conducted to determine the conditions necessary for ignition and self-sustained burning of these gluids and to attempt to simulate what probably happened in the wheel-well fire. The testing determined that under certain conditions these fluids will ignite and continue to burn after the ignition source is removed. |
| Report: |
DOT/FAA/CT-TN90/19 |
Pages: |
16 |
Size: |
4.78 MB |
| Title: |
Evaluation Of Existing Flammability Test Methods By Coomparison Of The Flammability Characteristics Of Interior Materials |
| Author: |
Eldon B. Nichols |
| Abstract: |
Twenty aircraft materials representing a cross section of the interior of a video-bodied passenger compartment were tested by five laboratory test methods for comparability. The five test methods utilized were: (1) Radiant Panel, (2) Rate of Heat Release, (3) Vertical Bunsen Burner, (4) Limited Oxygen Index, and (5) Thermogravimetric Analysis. Correlation of the results obtained from the five test methods were made for ignitability, flame spread, heat release, performance, heat flux exposure, and ranking of materials by performance.
Heat release data obtained from the Rate of Heat Apparatus and the E-162 radiant panel indicates the best correlation for panels. |
| Report: |
FAA-NA-79-46 |
Pages: |
53 |
Size: |
4.57 MB |
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