نتایج جستجو برای: aircraft accident
تعداد نتایج: 157953 فیلتر نتایج به سال:
The ability to detect and predict corrosion damage in its early stages could lessen the chances of catastrophic failure in aging, over-extended aircraft; thereby providing a safer and more reliable transportation system for both civilian and military sectors. This is especially critical now as transportation providers attempt to meet the increased expense of repairing aging aircraft with smalle...
SUMMARY A Dynamic Cell Structure (DCS) Neural Network was developed which learns topology representing networks (TRNs) of F-15 aircraft aerodynamic stability and control derivatives. The network is integrated into a direct adaptive tracking controller. The combination produces a robust adaptive architecture capable of handling multiple accident and off-nominal flight scenarios. This paper descr...
Aviation is one of the critical modes of our national transportation system. As such it is essential that new technologies be continually developed to ensure that a safe mode of transportation becomes even safer in the future. Data analyses in aviation improve safety. Analyzed air crash details plays very important role to avoid further unforeseen accidents. Air crash details of data’s are clas...
Mid Air Collisions (MAC) are tragic events, with the potential of multiple fatalities. Despite the improving trends in aviation safety, the rate of MAC has remained stable for the past few years. There is an absence of published literature on MAC and related human performance issues. Consequently, this study analyzed 79 mid air collisions in civil aviation in the United States from 1994 to 1999...
In this study, general aviation accident records from the files of the National Transportation Safety Board (NTSB), have been analysed by gender to observe the number and rate of pilot-error related accidents from 1972 to 1981 inclusive. If both females and males have no difference in performance, then data would have indicated similarities of accident rates and types of injuries. Males had a h...
One of the many difficulties in the study of accident causation is to keep under detailed medical supervision a group of men exposed to constant risk who provide a sufficiently large number of apparently accident-prone individuals. At the end of 1944 the prospects of continued employment were good. In an area where there was little alternative employment available, 300 men, who in that year had...
Although a "system approach" to accidents in sociotechnical systems has been frequently advocated, formal system theoretic concepts remain absent in the literature on accident analysis and system safety. To address this gap, we introduce the notions of coordinability and consistency from the hierarchical and multilevel systems theory literature. We then investigate the applicability and the imp...
In the present study, the effect of nano Al2O3 and nano graphene ceramic additives in optimizing performance and improving thermophysical properties of aircraft anti-icing/de-icing fluids was investigated. Nanoparticles were characterized by TEM, SEM and XRD methods. The thermal conductivity, surface tension and dynamic viscosity of the hybrid nanofluids were experimentally assessed for tempera...
In the present paper, an efficient method for three dimensional aircraft pattern recognition is introduced. In this method, a set of simple area based features extracted from silhouette of aerial vehicles are used to recognize an aircraft type from its optical or infrared images taken by a CCD camera or a FLIR sensor. These images can be taken from any direction and distance relative to the fly...
Can you remember your old schooldays? For some reason, we remember the old good days as being especially beautiful. All the shrubs on campus were in blossom and the trees were green. The grass was dotted with dandelions. Everyone was happy and carefree, for the vacation was just about to begin. With that to look forward to, no-one was worried about the future. But life is too complicated for yo...
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