Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 130 for “"Airplanes"”.
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A mathematical study of the controlled motion of airplanes
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1939.
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Enabling Proactive Quality in Commercial Airplanes using Natural Language Processing
Quality management systems traditionally draw insight from structured, often numerical, sources of data; unstructured, free-text representations of quality data are less frequently employed despite having high informational value, and often require additional human effort to prepare their contents …
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Optimized Engine Out Procedures to Extend the Range of Jet Transport Airplanes
<p>The purpose of this study was to develop optimum engine-out procedures for the Boeing 747 and 767 on extended flights that will increase the range of the aircraft in case of engine failure. Theory suggests that an optimum amount of bank angle that will minimize drag resulting from asymmetric …
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MICROBES AND AIRPLANES: INVESTIGATING MICROBIOLOGICALLY-INFLUENCED CORROSION OF SUBMERGED WORLD WAR II AIRCRAFT WRECK SITES
There is perhaps no better symbol of the destruction, technological advancement, and geographical scale of World War II than aircraft. Today, thousands of these wartime vestiges are located beneath the ocean's surface, serving as a highly sought after form of material culture. While archaeologists …
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State of the Art of Piloted Electric Airplanes, NASA's Centennial Challenge Data and Fundamental Design Implications
… determine the endurance and range for electric airplanes since the standard equations depend upon weight change over a flight and the weight of an electric airplane does not change. These new equations could then be solved for the optimal velocity and altitude which were the two driving factors …
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Beneath a great roof, airplanes and travelers will gather: an airport for the city of Washington D.C.
… and it is beneath this roof that the airplanes and the travelers gather. This thesis involves the grand scale. The size of elements like runways and aircraft require large and at times overwhelming designs; yet, care will be taken to accommodate the person, the traveler.
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Exploring barriers, enablers,jJustification and planning methods for total productive maintenance implementation in automated production of commercial airplanes
The 737 program is currently producing 42 airplanes per month and will increase that production rate to 47 per month by 2017 and 52 per month in 2018 [1] [2]. In order to help meet these rates Boeing plans to increase the amount of automation in the shop that produces front and rear spars for all …
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Optimization of shake inspections
… an increase in the production rate from 31.5 airplanes per month to 35 airplanes per month. Throughout the production value stream, opportunities to improve quality and reduce flow time are being thoroughly investigated. This thesis contributes to the investigation by focusing on improving the …
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Nature's engineering : a blueprint for efficient aircraft design
… advances in aviation technology leading to the airplanes of today. Despite these advances, airplanes possess many restrictions that prevent them from being as efficient as their nature-engineered counterparts. Researchers have thus returned to the methods of the earlier engineers in aviation and …
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Automated detection of a crossing contact based on its Doppler shift
… the radiated acoustic signatures of overflying airplanes are recorded at a ground station. In the analysis of six propeller and four jet airplanes, the program successfully identifies the passage of all six propeller airplanes with four incidences of false alarm, due in one case to a jet …
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The Effects of Aircraft Certification Rules on General Aviation Accidents
… to address the safety issues of the more complex airplanes within the category. Experimental-Amateur Built airplanes have the least amount of government oversight and are the fastest growing segment. The Light Sport Aircraft category is a more recent certification category that utilizes consensus …
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Rivals in the sky : the developmental relationship between the airship and the airplane.
… in 1918 with the end of the First World War. Airplanes and seaplanes quickly moved from experimental models to commercial and military dominance. While the two systems of flight started at about the same time, the airplane evolved into the most prolific method of aerial travel in North …
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Program scheduling : decreasing flow by back-scheduling
… to increase their production rate from 42 airplanes per month to eventually 52 airplanes per month. In order for the field to accommodate the increased production rates, opportunities are being considered for decreasing airplane production flow and the increasing capacity in the field. This …
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Prediction of Handling Qualities Deficiencies for Advanced Air Mobility Aircraft
… vehicles differ significantly from traditional airplanes and rotorcraft when it comes to configuration and handling qualities. Handling qualities for traditional airplanes and rotorcraft are often very predictable. All AAM concepts currently under development feature some sort of fly-by-wire …
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Optimizing neural networks for enhancing air traffic security
… a neural network to predict future positions of airplanes in the vicinity of airports. These predicted positions are then used to calculate future separation distances between pairs of airplanes. The predicted values of the separation distance are used to ensure adequate distances between …
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Toward a theory of the evolution of business ecosystems : enterprise architectures, competitive dynamics, firm performance & industrial co-evolution
… from the US, Europe and Japan: commercial airplanes, motor vehicles and airlines. The research is based primarily on an in depth seven-year, multi-level, multi-method, field-based case study of both firms in the large commercial airplanes industry mixed duopoly as well as the key …
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Application of lean manufacturing technique for the design of the aircraft assembly line
The final assembly line for the Boeing Commercial Airplanes 717 Program is currently implementing "The 9 Tactics", a methodology based on the lean manufacturing principles to transform the current processes to continuous moving lines. The first two tactics, Value Stream Mapping and Balancing the …
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Modeling Hydrodynamic Stability of Incline-Liquid Airblast Nozzle for Gas Turbine Combustion
<p>Fuel is a major cost item for civil transport airplanes. Minimizing fuel consumption of these crafts is a stream of economic opportunity and a stage for innovation, competition and exploration. Regardless of the fuel type, bio or crude oil based, the civil transport stakeholders would like to …
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Experimental Characterization and Analysis of Simple Residential Structures Subjected to Simulated Sonic Booms
… the FAA limits overland flight of supersonic airplanes due to the negative effect of the sonic boom on communities. The annoyance produced by the impulsive signature of sonic booms, particularly indoors, cannot exceed that of the broadband, low-overpressure noise produced by subsonic airplanes …
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Leading Edge
… Since that time I have been obsessed with airplanes. Wanting to be like my father in my youth, I became interested in the construction of these machines. I would spend hours working in the shop with my dad on airplanes and learning the specific structures that made up all sorts of different …
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