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| Title: | An Investigation Of Methods To Control Post-Crash Fuel Spill From Integrae Fuel Tanks | ||||
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| Author: | K.D. Robinson | ||||
| Abstract: | This study was undertaken to investigate the use of elastomer coatings, curtains and other more novel materials as containment methods to eliminate or control post-crash spill from aircraft integral fuel tanks. Through use of comparative screening tests, elastomeric liner, curtain and multiplayer liner, and contractor selected boot type liner concepts were selected for evaluation in aircraft wing sections. Results of aircraft wing selection drop tests show that little improvement was realized with the various systems installed. The structural damage to the wing sections was of such magnitude as to preclude success of any of the systems evaluated. |
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| Report: | FAA-RD-71-75 | Pages: | 51 | Size: | 7.18 MB |
| Title: | Reactions Of Pilots To Warning Systems For Visual Collison Avoidance | ||||
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| Author: | Paul M. Rich, Warren G. Cook, Richard L. Sulzer, Peter R. Hill | ||||
| Abstract: | A series of six experiments was conducted that have application to the development of Pilot Warning Instruments (PWI). The experiments were concerned with the effect of warning rates on pilot performance, pilot response to imminent collision threats, the evaluation of scanning patterns, the value of warning-only, the effect of relative motion on pilot performance, and the effect of PWI display sector size. The results of these experiments offer a variety of useful data in the area of visual collision avoidance. | ||||
| Report: | FAA-RD-71-61 | Pages: | 44 | Size: | 2.96 MB |
| Title: | Relationship Between The SAE Smoke Number and Jet Aircraft Smoke Visibility | ||||
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| Author: | Gerald R. Slusher | ||||
| Abstract: | A method was developed using the Society of Automotive Engineers (SAE) smoke numbers for calculating the exhaust smoke transmission for turbine engines, number of plume paths, and viewing angles. Criteria were developed relating the SAE smoke number to engine airflow and thus to engine size for conditions of visible and invisible smoke. Transmission of multiple plumes was calculated and presented. | ||||
| Report: | FAA-RD-71-23 | Pages: | 23 | Size: | 983 KB |
| Title: | Evaluation Of Cryogenic Nirogen As A Fire Extinguishing Agent For Aircraft Powerplant Installations | ||||
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| Author: | George Chamberlain, Eugene Klueg | ||||
| Abstract: | Proposals have been made to carry relatively large quantities of liquid nitrogen (LN2) aboard commercial aircraft for the purpose of fuel tank inerting. Secondary uses such as powerplant fire extinguishment, have been suggested. Testing was conducted at the National Aviation Facilities Experimental Center to determine the feasibility of using LN2 as an aircraft powerplant fire-extinguishing agent and also to determine the characteristics of LN2 when used as an extinguishant. These tests were conducted in a fire test facility using a full-scale aircraft turbojet engine and nacelle for subsonic low altitude flight condition simulation and also in a mockup engine/nacelle facility where nacelle volume and airflow could be varied. For all tests, the LN2 was delivered from a dewar where it was stored under pressure as a saturated liquid. All fire tests were conducted using JP-4 jet fuel which was spray released and spark ignited. In addition to the preliminary feasibility study, this report describes the experimentation conducted to determine the qesign criteria required for an effective agent quantity, discharge rate, discharge conditions, and distribution system configuration. The report also describes the effects of-an inadvertent discharge on engine ""components, the effects of a damaged cowling, and the cooling of potential reignition sources. | ||||
| Report: | FAA-RD-71-58 | Pages: | 150 | Size: | 33.1 mB |
| Title: | Fire-Extinguishing Methods for New Passenger/Cargo Aircraft | ||||
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| Author: | Julius J. Gassman & Richard G. Hill | ||||
| Abstract: | Full-scale fire tests were conducted to determine the degree to which fire in large cargo compartments may be controlled by the use of bromotrifluoromethane as an extinguishing method in conjunction with ventilation shutoff. Results of the tests, using a 10-percent load, indicated that temperature can be kept below 500 degree F and that a flash fire can be averted for at least 2 hours by the use of as little as 3 percent by volume of bromotrifluoromethane. The rate of agent application was about 3 � pounds per second. During these tests, the normal leakage that occurs while in flight configuration was simulated by providing airflow of 75 cubic feet per minute. Two tests were conducted to determine the effectiveness of liquid nitrogen as an extinguishing agent. The weight of agent used was 175 pounds and 284 pounds, respectively. The use of liquid nitrogen proved very effective in extinguishing the initial flames, but with the 75 CFM simulated leakage, when the oxygen concentration rose to 12 percent, a flash fire occurred. In both cases the protection lasted just over 30 minutes. The rate of application of the liquid nitrogen was as high as 10 pounds per second. | ||||
| Report: | FAA-RD-71-68 | Pages: | 34 | Size: | 8 MB |
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