Matching Items (6)
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Description
The objective of this study was to investigate the generational differences among US commercial airline pilots regarding their attitudes toward safety. A survey was distributed to three different US airlines: one major commercial airline, one regional airline, and one charter airline. A total of 106 pilots participated in this study.

The objective of this study was to investigate the generational differences among US commercial airline pilots regarding their attitudes toward safety. A survey was distributed to three different US airlines: one major commercial airline, one regional airline, and one charter airline. A total of 106 pilots participated in this study. The pilots were categorized into three groups of generations based on birth years: Baby Boomers: 1946-1964, Generation X: 1965-1980, and Generation Y: 1981-2000. Through the use of one-way Analysis of Variance (ANOVA), the results of the analyses found that there was no significant difference between the generations of pilots regarding safety attitudes. In the subcategory of self-confidence, the results indicated no significant differences between the different generations of pilots. However, in the subcategories of risk orientation and safety orientation, significant differences were detected among the three generations of pilots. Baby Boomers were found to have the lowest risk tolerance, while Generation Y had the highest. Conversely, Baby Boomers were found to have the highest safety orientation, with the lowest being that of Generation Y.
ContributorsGashgari, Emad A (Author) / Niemczyk, Mary (Thesis advisor) / Nullmeyer, Robert (Committee member) / Gibbs, Robert (Committee member) / Arizona State University (Publisher)
Created2013
Description

This report summarizes the development of a lifting body aircraft configuration, referred to as ‘LBA’, aimed to serve the long-haul airliner market. This study was conducted in response to the aerospace industry’s goal to reduce global aviation’s emissions by 2050, as well as considered market potential. The report covers the

This report summarizes the development of a lifting body aircraft configuration, referred to as ‘LBA’, aimed to serve the long-haul airliner market. This study was conducted in response to the aerospace industry’s goal to reduce global aviation’s emissions by 2050, as well as considered market potential. The report covers the preliminary sizing and design considerations for the LBA as well as practical testing against current conventionally configured long haul aircraft, specifically the Boeing 787-9 and Airbus A330-900 NEO. To test the effectiveness of a lifting body configuration, the wind tunnel at Arizona State University was used to compare models of the LBA, A330, and 787. The result quality from the wind tunnel was constrained due to its limitations and challenges to accurately scale Reynolds Number to that of a transonic regime. This renders the data with low fidelity, and therefore rather insufficient. However, the observed trends are promising and could rationalize expanded research into the application of a lifting body fuselage to improve aircraft efficiency.

ContributorsMohanty, Udayketan (Author) / Garrett, Frederick (Thesis director) / Veselovsky, Jeffrey (Committee member) / Barrett, The Honors College (Contributor)
Created2023-05
ContributorsMohanty, Udayketan (Author) / Garrett, Frederick (Thesis director) / Veselovsky, Jeffrey (Committee member) / Barrett, The Honors College (Contributor)
Created2023-05
ContributorsMohanty, Udayketan (Author) / Garrett, Frederick (Thesis director) / Veselovsky, Jeffrey (Committee member) / Barrett, The Honors College (Contributor)
Created2023-05
Description

Today, the vision of Commercial Supersonic Travel is often dreamed possible with innovation. Modern tech-business plans to reinvent commercial SuperSonic Transport (SST), while gaining reliable venture capital investment and proactive social backing. However, the concept’s global viability remains questionable, as regulation opposes its integrability. As a result, SST has become

Today, the vision of Commercial Supersonic Travel is often dreamed possible with innovation. Modern tech-business plans to reinvent commercial SuperSonic Transport (SST), while gaining reliable venture capital investment and proactive social backing. However, the concept’s global viability remains questionable, as regulation opposes its integrability. As a result, SST has become industrially forgotten. This research paper challenges the neglect of SST through routing optimizations derived from an industry’s collective research, while outlining decisive use-cases. Initially, this paper describes the difficulty in SST’s integration through its logistical tasks, demanding designs, and lacking efficiency. After that, the paper defines an optimization strategy, through software-analyzed flight paths, for overall supersonic operations. This strategy was proven to shorten established SST flights by 6%, while enabling the implementation of newfound SST paths. Here, optimization averaged 3.3% on density-derived routes and 5.4% on software-derived routes. More importantly, this paper demonstrated routing optimization enables MACH 1.6 aircraft to achieve MACH 2 flight times. Further, this paper attempts to justify SST through an analysis of its market, financials, and social perspectives. With that, the paper justifies an ideal SST customer earns 630$/hr, while such measurements vary amongst flight types. Finally, this paper conceptualizes that SST, with optimization, promises a noteworthy business, while developments in aircraft designs may revamp the aerospace industry completely.

ContributorsDe Roo, Matisse (Author) / Takahashi, Timothy (Thesis director) / Dahm, Werner (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2023-05
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Description
This thesis aims to determine how finite wing aerodynamic loads change in proximity to the ground. In this study, the primary design tool is an inviscid panel method code, VORLAX. The validation tool is a commercial volume grid CFD package, ANSYS FLUENT. I use VORLAX to simulate wings with different

This thesis aims to determine how finite wing aerodynamic loads change in proximity to the ground. In this study, the primary design tool is an inviscid panel method code, VORLAX. The validation tool is a commercial volume grid CFD package, ANSYS FLUENT. I use VORLAX to simulate wings with different incidences and aspect ratios to look at how ground effect impacts spanwise loading and incipient flow separation. Then the results were compared to widely published equations such as McCormick, Torenbeek, and Hoerner & Borst. Because I found that these “famous” equations function best only for specific conditions, I propose a new empirical equation to estimate ground effect lift as a function of aspect ratio and incidence. Using Stratford’s method to predict signs of flow separation in the inviscid solutions, I found that variations in the height above the ground were not significant enough to change the stall angle of low aspect ratio wings. I did find early signs of flow separation with increasing aspect ratio. I observe significant changes in spanwise loading when in ground effect; as I narrow the gap, the transverse loading builds higher near the center of the wing. These effects were more apparent in wings with smaller aspect ratio; higher aspect ratio wings experience a higher loading gradient near the tips in proximity to the ground. I found that high aspect ratio wings have a smaller stall angle compared to that of lower aspect ratio wings; these trends are consistent between the potential flow solution and the volume grid CFD viscous solution.
ContributorsValenzuela, Jose Vanir (Author) / Takahashi, Timothy (Thesis advisor) / Dahm, Werner (Committee member) / Huang, Huei-Ping (Committee member) / Arizona State University (Publisher)
Created2024