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 120 for “"commercial aircraft"”.
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Valuation techniques for commercial aircraft program design
This research considers the commercial aircraft design process from the perspective of program value. Whereas traditionally, the conceptual design of aircraft has often focused on minimum weight, or sometimes minimum cost, this approach demonstrates the feasibility and usefulness of design based on …
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Trade space assessment of electrified commercial aircraft
… benefit of electrified propulsion systems for commercial aircraft entering production in a 2035 timeframe. The propulsive power reduction from boundary layer ingestion (BLI), a technology that could be enhanced by electrification, is characterized and bounded by power balance analysis. An …
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Modeling and simulation of commercial aircraft electrical systems
… to study the general power flow and dynamics of commercial aircraft electrical systems. This was done by creating a toolset composed of the crucial elements to model an aircraft electrical system that consists of power sources, power conversion, power distribution, and electrical loads. The …
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Designing Shock Control Bumps for Transonic Commercial Aircraft
… promising flow control devices for transonic commercial aircraft. By generating a λ-shock structure, 2D SCBs offer large drag savings, but perform poorly when that structure breaks down off-design. Milder-performing 3D devices produce weak vortices, that may offer some boundary layer control, …
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Value-based multidisciplinary optimization for commercial aircraft program design
Traditional commercial aircraft design attempts to achieve improved performance and reduced operating costs by minimizing maximum takeoff weight, but this approach (does not guarantee the financial viability of the program to the manufacturer. Improved design practices would take into account not …
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System integration analysis of a large commercial aircraft engine
… methodology is demonstrated with a world-class commercial high bypass-ratio turbofan engine, the Pratt & Whitney PW4098. This product is a derivative design of an existing configuration, or family of engines. Recommendations based upon the PW4098 application include specific interface management …
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Marketing strategy for commercial aircraft engines : a case study
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1989.
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Improving commonality implementation in the cockpits of commercial aircraft
… a major source of competitive advantage in the commercial aircraft business. Judiciously implementing commonality across a range of products yields important benefits in this area. Thus, measuring the quality of commonality implementation is extremely beneficial for aircraft manufacturers. This …
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Implementing precision assembly techniques in the commercial aircraft industry
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Cybersecurity Vulnerability Analysis and Countermeasures of Commercial Aircraft Avionic Systems
<p>Nowadays, most commercial aircraft use systems with innovative technologies and unprecedented infrastructure of avionics applications which include cyber technologies. Airplane passengers are now using aviation cyber technologies when purchasing tickets, checking in at the airline counter, …
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Three-dimensional displays for commercial aircraft: A theoretical and empirical evaluation
The requirements for a modern comparison of two-dimensional and three-dimensional perspective displays for aviation are outlined. Previous studies making such a comparison are discussed, and found to not contain the displays and tasks required to fully evaluate the relative tradeoffs of two- and …
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Determining appropriate levels of robotic automation in commercial aircraft nacelle assembly
… the assembly of the engine nacelle inlet for a commercial aircraft. In addition to addressing the achievable level of automation, this thesis also reviews the evaluation of robotics vendor proposals and the accompanying financial justification requisite for implementation. The aircraft industry …
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Marketing strategy in the commercial aircraft engine business : a case study
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1986.
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Technical and environmental assessment of all-electric 180-passenger commercial aircraft
… contribute to climate change, and all-electric aircraft offer an opportunity for zero in-flight emissions. Over the past decade, more than 50 all-electric conceptual, experimental, and commercial aircraft have been researched, with a particular focus on light aircraft. These designs are …
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Assembly process development for commercial aircraft using computer-aided tolerance tools
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993 and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1993.
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Environmental impact assessment of commercial aircraft operations in the United States
… to assess the environmental damages of US commercial aircraft operations from 1991-2003. The initial contribution of this work was demonstrating the feasibility of, and identifying requirements for, the FAA Aviation-environmental Portfolio Management Tool (APMT), an integrated assessment …
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Internal dynamics of the short-term commercial aircraft engine leasing market
General trends in the commercial aircraft aftermarket indicate an increased reliance of leased engines in operators' spare engine strategies. A methodology for forecasting short-term engine lease demand is developed using Pratt & Whitney's existing simulation capability. This method demonstrates …
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Global Commercial Aircraft Fuel Burn and Emissions Forecast: 2016 to 2040
… over time, d) fuel consumption by OD pair and aircraft type, and emissions by OD pair and aircraft type. The model has developed an airline fleet assignment module to predict changes to the airline fleet in the future. Specifically, the model has the capability to examine the fuel and emission …
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System dynamics analysis of an ordering system used for commercial aircraft manufacture
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993, Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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