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| Title: | Fire Response Of Geopolymer Structural Composites | ||||
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| Author: | Richard Lyon | ||||
| Abstract: | The fire response of a potassium aluminosilicate matrix (geopolymer) carbon fiber composite was measured and the results compared to organic matrix composites being used for infrastructure and transportation applications. At irradiance levels of 50 kW/m2, typical of the heat flux in a well developed fire, glass- or carbon-reinforced polyester, vinylester, epoxy, bismaleimde, cyanate ester, polyimide, phenolic, and engineering thermoplastic laminates ignited readily and released appreciable heat and smoke, while carbon-fiber reinforced geopolymer composites did not ignite, burn, or release any smoke even after extended heat flux exposure. The geopolymer matrix carbon fiber composite retains sixty-three percent of its original 245 MFa flexural strength after a simulated large fire exposure. | ||||
| Report: | DOT/FAA/AR-TN95/22 | Pages: | 14 | Size: | 12.2 MB |
| Title: | Chemical Options to Halons for Aircraft Use | ||||
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| Author: | Robert Tapscott | ||||
| Abstract: | This report contains summary of available fire suppression agents, their properties and applicability in the various aircraft applications. Classes of agents, with presently available agents listed, are recommended for use in the development of test protocols. The test protocol developed for a class of agents can be used, with minor modifications, to test all agents belonging to that class. | ||||
| Report: | DOT/FAA/CT-95/9 | Pages: | 59 | Size: | 3 MB |
| Title: | Validation of the Magneto-Optic/Eddy-Current Imager | ||||
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| Author: | Vanessa J. Breechling, Floyd Spencer | ||||
| Abstract: | This report details the validation analysis of PRI's Magneto-Optic/Eddy-Current Imager (MOl). The analysis includes both a reliability analysis of the system and an economic analysis of the potential benefits and costs related to its use. The reliability analysis consisted of blind inspections of well characterized panels simulating a fuselage lap splice. The panels contained cracks of known sizes emanating from under rivet heads on the upper row of rivets. The MOl inspection times were less, on average, than were inspection times using a sliding probe. Twenty percent reduction in inspection times is consistent with the data obtained and is used as a baseline for the economic analysis. The economic analysis considers the effects of individual factors that contribute to the cost effectiveness of the MOL The possible returns on the investment for a representative maintenance facility lare calculated using the net present value methodology. Specific characteristics are defined for the representative facility; and then they are varied to account for the differences in the. maintenance community. For a facility which can take full advantage of the potential time and labor savings associated with implementation of the MOl, the investment in MOl would generate a positive return in less than one year. In this fully competitive scenario the cumulative net present value at the end of the tenth year would be over $160,000. Under a semi-competitive scenario, the not present value is negative throughout the life cycle of the investment. |
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| Report: | DOT/FAA/AR-95/100 | Pages: | 57 | Size: | 54.0 MB |
| Title: | Prposed Cabin Safety Research Program (Transport Category Airplanes) | ||||
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| Author: | F.A.A. Technical Center, Transport Canada Aviation and Joint Aviation Authorities | ||||
| Abstract: | Cabin safety presents challenges common to all aviation authorities. Related issues and needed research must be accomplished through a totally integrated program. To enhance their respective research capabilities, the U.S. Federal Aviation Administration (FAA) and the Transport Canada Aviation (TCA), the aviation authorities of North America, and the Joint Aviation Authorities (JAA), the aviation authority of Europe, have been doing in rulemaking, agreed to cooperate in research the transport category airplane cabin safety. The FAA/JAA/TCA Cabin Safety Research Program is the formalization of this agreement. Specically, the goal of the Cabin Research Program is to provide a mechanism for the coordination of pertinent activities and, as appropriate, the conduct of cooperative joint, and complementry programs to the benefit of the three authorities. For the purpose of this program, cabin safety is intended to address acute eventss/condition which can be dealt with by changes within (or closely associated with) the cabin. Although in-flight issues form an integral part of cabin safety, the primary focus is postcrash survivability the principal elements of which are structural crashworthiness, fire safety, evacuation and overwater survival. The foremost decision-making tool to identify and access the potential of needed research (and of past improvements) are a probailistic risk analysis model and a cabin safety accident/incident information data bank/base. |
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| Report: | DOT/FAA/AR-95/14 | Pages: | 67 | Size: | 2.29 MB |
| Title: | The Role of Research and Development on Safety Regulation | ||||
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| Author: | William T. Westfield | ||||
| Abstract: | A review of regulatory actions taken by the Federal Aviation Administration (FAA) over approximately the past thirty years was made to identify which of these actions were preceded by, or triggered by research and development (R&D) programs. The focus of this analysis was limited to those actions and R&D that pertained to aircraft safety. Research was frequently requested to be performed by the industry elements themselves, namely the engine and aircraft manufacturers, independent research organizations, or by academia. As the FAA experience with the operational fleets grew, some research was accomplished by the internal FAA and governmental organizations, such as the Civil Aeromedical Institute or the Technical Center, and the National Aeronautics and Space Administration. The review revealed that the rulemaking actions were supported quite frequently by research. While it is true that major accidents brought the attention to technology unknowns, and the subsequent rulemaking to prevent the problem appeared to be moving too slowly to provide solutions to the need, the review showed many risks have been reduced, (cabin fires, inadvertent collision with terrain, faster evacuation, to name a few) through the performance of research. |
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| Report: | DOT/FAA/AR-95/84 | Pages: | 31 | Size: | 7.81 MB |
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