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 59 for “"aircraft performance"”.
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Aircraft performance enhancement with active compressor stabilization
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Potential of Multi-Winglet Systems to Improve Aircraft Performance
Gegenstand der vorliegenden Arbeit ist die Untersuchung des Potenzials von Multi-Winglet Konfigurationen zur Leistungssteigerung von Flugzeugen. Multi-Winglet Systeme sind aus der Vogelwelt bekannt. Die offensichtliche Diskrepanz zwischen dem Erfolg der Multi-Winglet Konfiguration in der Natur …
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Battery Centric Serial Hybrid Aircraft Performance and Design Space
… envelope of a battery centric serial hybrid aircraft has been analytically derived. The formulation assumes cruising flight only and all energy available is used. The flight envelope can be generated for any conventional propeller driven serial hybrid aircraft. The advantageous combination of …
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Modeling hybrid-electric regional jet aircraft performance & emissions reduction potential
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Historical and future trends in aircraft performance, cost, and emissions
… fuel consumption and the potential impacts of aircraft engine emissions on the global atmosphere have motivated the industry, scientific community, and international governments to seek various emissions reduction options. Despite the efforts to understand and mitigate the impacts of aviation …
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Analysis of aircraft performance during lateral maneuvering for microburst avoidance
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Parameter Estimation of Fundamental Technical Aircraft Information Applied to Aircraft Performance
<p>Inverse problems can be applied to aircraft in many areas. One of the disciplines within the aerospace industry with the most openly published data is in the area of aircraft performance. Many aircraft manufacturers publish performance claims, flight manuals and Standard Aircraft Characteristics …
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Evaluation of aircraft performance algorithms in Federal Aviation Administration's Integrated Noise Model
… in the vicinity of airports. A review of the aircraft performance algorithms in the INM was conducted and improved models for true airspeed, takeoff/climb thrust, level-flight thrust, and climb performance were developed. The true airspeed model with air compressibility correction provides an …
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Correlation of fighter aircraft performance with combat effectiveness in a tactically significant environment
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Life cycle cost modelling as an aircraft design decision support tool
… unmanned air vehicles. A novel classification of aircraft product definition is utilised and a framework to estimate the life cycle cost of aircraft using the product definition is presented. The architecture to estimate the life cycle cost and the associated models are described.<br/>The …
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Modeling Aircraft Fuel Consumption with a Neural Network
This research involves the development of an aircraft fuel consumption model to simplify Bela Collins of the MITRE Corporation aircraft fuelburn model in terms of level of computation and level of capability. MATLAB and its accompanying Neural Network Toolbox, has been applied to data from the base …
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Statistical modeling of aircraft engine fuel burn
Fuel burn is a key driver of aircraft performance, and contributes to airline costs and aviation emissions. While the trajectory (ground track) of a flight can be observed using surveillance systems, its fuel consumption is generally not disseminated by the operating airline. Emissions inventories …
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Residual stress measurement and structural integrity evaluation of SLM Ti-6Al-4V
… industry has narrowed the gap between the aircraft performance envelope requirements and the material limits. The most advanced turbine engines are incredibly complex in design and the weight-saving requirements have placed significant pressure on material capabilities and the manufacturing …
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Estimation of potential aircraft fuel burn reduction in cruise via speed and altitude optimization strategies
Environmental performance has become a dominant theme in all transportation sectors. As scientific evidence for global climate change mounts, social and political pressure to reduce fuel burn and C0 2 emissions has increased accordingly, especially in the rapidly growing aviation industry. …
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The impact of aircraft design reference mission on fuel efficiency in the air transportation system
Existing commercial aircraft are designed for high mission flexibility, which results in decreased fuel efficiency throughout the operational life of an aircraft. The objective of this research is to quantify the impact of this practice and other non-optimal emergent behaviors of the current global …
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A Framework of a Power Management System for a Hybrid Electric VTOL Aircraft using Optimal Control
… on a mission-to-mission basis, enabling aircraft performance flexibility. The framework is used to assess the effects of MHPS electric power hybridization, energy hybridization mass ratio, and peak power output on UAV performance during demanding phases of flight, which include takeoff, …
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Qualitative Reasoning in an Expert System Framework
… justified by applying qualitative reasoning to aircraft performance equations. Equations are represented in a semantic network where nodes represent variables and links represent dependent variable influences.
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Software control for an airborne real-time data acquisition and recording system
… of airlines in their jetliners for monitoring aircraft performance during flight and recording such data on what is commonly known as the "black box" recorder. The system was primarily developed for use in the new generation of airliners by Boeing Aircraft Company, namely the Boeing 767 and the …
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Fatigue: Investigation of a Human Factor for Regional Airline Pilots
… airline pilot fatigue and the impact on pilot performance. An instrument was developed and refined through a field study validation by a panel of experts. The final instrument was distributed to three groups of regional airline pilots. The data supported the literature review, which revealed …
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Assessment of propfan propulsion systems for reduced environmental impact
Current aircraft engine designs tend towards higher bypass ratio, low-speed fan designs for improved fuel burn, reduced emissions and noise. Alternative propulsion concepts include counter-rotating propfans (CRPs) which have been investigated intensively in the 1970s and 1980s and demonstrated …
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