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Articles 1 - 30 of 170
Full-Text Articles in Engineering
The Travel And Tourism Competitiveness Index: Examining The Reciprocal Relationship Among The Ttci Factors Relative To Porter’S (1998) Diamond Model And Airline Passenger Seat Capacity For The Countries Of The World, Hani Abdullah
Theses and Dissertations
The current study tested the application of Porter's (1998) diamond model of international competitiveness to the travel and tourism (T&T) industry by examining the relationship among the 14 factors of the travel and tourism competitiveness index (TTCI) to the model's four dimensions. The assignment of TTCI factors to these dimensions was guided by Dwyer and Kim (2003) and Ritchie and Crouch (2010). The study also examined the relationship between TTCI factors and airline passenger seat capacity, which was measured as the per capita annual average of weekly available seat kilometers. The sample comprised 136 countries, which represented 70% of the …
Fatigue Issues And Mitigation Strategies In Collegiate Aviation, Flavio A. C. Mendonca Ph.D., Julius Keller, Erik Levin, Aaron Teo
Fatigue Issues And Mitigation Strategies In Collegiate Aviation, Flavio A. C. Mendonca Ph.D., Julius Keller, Erik Levin, Aaron Teo
Publications
The reduction of fatigue-related accidents has been in the NTSB most wanted list since 2016 (NSTB, 2019).
Most research studies have focused on fatigue identification and management within the commercial and/or military aviation environments (Caldwell et al., 2009; Gawron, 2016; Sieberichs & Kluge, 2016).
However, collegiate aviation may be the most challenging in terms of fatigue mitigation. Flight instructors and students often have schedules which may increase the risks for fatigue.
Computational Model For Pedestrian Movement And Infectious Diseases Spread During Air Travel: A Molecular Dynamics-Like Numerical Approach, Pierrot Derjany
Computational Model For Pedestrian Movement And Infectious Diseases Spread During Air Travel: A Molecular Dynamics-Like Numerical Approach, Pierrot Derjany
Doctoral Dissertations and Master's Theses
There is direct evidence of the transmission of fatal infectious pathogens in large human gatherings. Air transportation is no exception. The mixing of susceptible and infectious individuals in this high-density man-made environment involves pedestrian movement which is generally not taken into account in modeling studies of disease dynamics. This thesis addresses this problem through a multiscale model that combines pedestrian dynamics with stochastic infection spread models. This generic model is applicable to several directly transmitted diseases. Through this multiscale framework, the effectiveness of certain layout and strategies in suppressing the disease spread in highly crowded locations such as airplanes, airports …
A Step Toward Ending Long Airport Security Lines: The Modified Boarding Pass, Joel Lee
A Step Toward Ending Long Airport Security Lines: The Modified Boarding Pass, Joel Lee
Doctoral Dissertations and Master's Theses
Anyone who has traveled by air has most likely experienced long airport security lines. Yet not much is known about its cause because few have considered if passengers have created this problem for themselves. The present study attempts to fill this research gap by suggesting that when passengers are not well-prepared for security screening, they delay the process by making mistakes and not complying with procedures. This lack of preparedness can be attributed to several shortcomings of security signposts. This study proposes the use of a modified boarding pass as an alternative form of signage to help passengers better prepare …
Damage Resistance And Tolerance Of 3d Woven Composites, Justin T. Mcdermott
Damage Resistance And Tolerance Of 3d Woven Composites, Justin T. Mcdermott
Electronic Theses and Dissertations
Composite materials have been adopted into primary aircraft structures by virtue of their great strength-to-weight and stiffness-to-weight ratios, fatigue insensitivity, and corrosion resistance. These characteristics are leveraged by aircraft designers to deliver improved fuel effciency and reduced scheduled maintenance burdens for their customers. These benefits have been impressively realized in the Boeing 787 and Airbus A350 XWB, with airframes utilizing about 50% composites by weight. Tempering these successes, however, are the inherent vulnerabilities of carbon-fiber reinforced composites. When compared to conventional metallic structure, composite laminates are more sensitive to stress concentrations at mechanical fastenings and damage due to low-velocity impact. …
Effects Of Musical Ability On Flight Planning, Situational Awareness, And Flight Path Deviations, Andrew P. Henry
Effects Of Musical Ability On Flight Planning, Situational Awareness, And Flight Path Deviations, Andrew P. Henry
Doctoral Dissertations and Master's Theses
Numerous studies have been conducted on music education and the benefits that learning an instrument has on the brain. However, there is little research that connects a pilot’s ability to play an instrument to a pilot’s ability to fly an airplane. When learning an instrument, students learn non-musical abilities, such as executive functions, which may correspond with the skills necessary to be a good pilot. The purpose of this study was to find a relationship between learning a musical instrument and pilot performance, specifically related to flight planning, situational awareness, and flight path deviations. This study was a quasi-experimental design …
Runway Incursions: Examining Airport Managers’ Perspectives Of The Challenges Related To Vehicle/Pedestrian Deviations, John Arthur Mahlman Jr.
Runway Incursions: Examining Airport Managers’ Perspectives Of The Challenges Related To Vehicle/Pedestrian Deviations, John Arthur Mahlman Jr.
Theses and Dissertations
The purpose of the current study was twofold: (a) to describe the contributing factors of vehicle and pedestrian deviation (V/PD) runway incursions (RIs) nationally, and (b) to describe what mitigation approaches/strategies airport managers recommend or find to be effective. The current study used a content analysis in identifying airports with more than 10 V/PD RIs within Fiscal Years (FY) 2011 to FY 2016. After the study population was identified, phenomenological design was used to poll airport executives of the previously identified airports. The 11 participants elected to either complete an anonymous survey or participate in a telephone interview. Spradley’s (2016) …
Electronic Word-Of-Mouth (Ewom): Examining The Relationship Between Factors Influencing Ewom Activities And Passengers’ Purchasing Involvement In The Context Of Aviation, Ratchada Ruenruoy
Electronic Word-Of-Mouth (Ewom): Examining The Relationship Between Factors Influencing Ewom Activities And Passengers’ Purchasing Involvement In The Context Of Aviation, Ratchada Ruenruoy
Theses and Dissertations
The purpose of the study was manifold: (a) to examine the relationship a set of targeted factors has on electronic Word-of-Mouth (eWOM) activities in the context of aviation, (b) to examine the extent to which these factors affect airline passengers’ purchasing involvement, and (c) to determine the extent to which eWOM activities mediate the relationship between the targeted factors and purchasing involvement. Research factors included (a) purchasing perceptions, which consisted of satisfaction, loyalty, perceived value, and service quality; (b) social environment, which consisted of age, gender, and cultural differences relative to Hofstede’s (1980) cultural dimensions; and (c) experiences, which consisted …
An Agent Based Model Of Passenger Boarding For Examining Commercial Aircraft Boarding Strategies, Frank W. Ciarallo, Raymond R. Hill, Kerry K. Ward
An Agent Based Model Of Passenger Boarding For Examining Commercial Aircraft Boarding Strategies, Frank W. Ciarallo, Raymond R. Hill, Kerry K. Ward
Faculty Publications
We use an agent-based simulation methodology to study airline passenger boarding using measures that reflect both the customer experience and airline efficiency perspective. This approach supports exploration of models of actual aircraft used in practice and detailed modeling of passenger dynamics. This paper discusses the modeling approach and a set of experiments comparing several boarding strategies from practical settings as well as the literature.
Mitigating The Risk Of Bird Strikes: The Use Of Virtual Reality During Flight Training, Flavio A. C. Mendonca Ph.D., Julius Keller Ph.D., Chien-Tsung Lu, Chenyu Huang Ph.D.
Mitigating The Risk Of Bird Strikes: The Use Of Virtual Reality During Flight Training, Flavio A. C. Mendonca Ph.D., Julius Keller Ph.D., Chien-Tsung Lu, Chenyu Huang Ph.D.
Publications
There were 193,969 wildlife strikes in the US from 1990 through 2017. Wildlife strikes annually cost the US civil aviation industry, on average, $186 million in monetary losses and 111,284 hours of aircraft downtime (Dolbeer & Begier, 2019). According to the Federal Aviation Administration (FAA), Aeronautical Decision-Making (ADM) is a systematic approach that encourages pilots to identify hazards and manage risks (FAA, 2016). Additionally, it helps aviators to make timely and safe decisions. Even though it is practically impossible to eliminate the risk of bird strikes, crewmembers play a vital role in the accident prevention process (Mendonca, Carney, & Fanjoy, …
Automatic Landing Gear, Daniel Battles, Cindi Albrightson
Automatic Landing Gear, Daniel Battles, Cindi Albrightson
Student Research
Airplanes that are equipped with retractable landing gear are typically more desirable by pilots because of the benefits that come from this. There are also cons to having retractable landing gear, and having to remember to retract or extend the gear is one example. A switch on the dashboard must be flipped in order to activate the gear at the right time. In the incident that an airplane lands without the landing gear down, this is referred to as a “Gear up landing”. Gear up landings are usually caused from pilot error, which in many cases means that the pilot …
How Airport Construction Will Evolve With The Increased Effects Of Climate Change, Xavier M. Ashley
How Airport Construction Will Evolve With The Increased Effects Of Climate Change, Xavier M. Ashley
Beyond: Undergraduate Research Journal
This report addressed the effects rising global temperatures resulting from climate change have had on flight operations in their entirety. The research objective was to discover what methods could enhance climate adaptation in airport construction, as higher mean-surface temperatures have an increasingly negative effect on aircraft performance. The findings would primarily be of interest to the Federal Aviation Administration (FAA) Primary Office presiding over the planning and development of airports. Overall, the report provided a comprehensive analysis of global warming’s effects on aviation, including the implications of degraded aircraft performance and sea-level rise for coastal airports. Additionally, it examined comparative …
Correct Delay Code Assignment, Alessandro Conconi, Anderson Da Silva Serafim, Vitor Cordeiro Silva, Thais Vieira Haberli
Correct Delay Code Assignment, Alessandro Conconi, Anderson Da Silva Serafim, Vitor Cordeiro Silva, Thais Vieira Haberli
Graduate Student Works
The air transport market requires high investments, has elevated risks, and low financial return. The competition requires airlines to differentiate themselves by offering better services. On-time Performance (OTP) is an essential service; lack of punctuality affects company costs and revenues. An on-time company generates more satisfaction for travelers, retaining them. Flight delays are identified and reported by airlines through delay codes that are standardized by IATA.
A detailed and specific analysis of an airline's processes was performed to verify the quality of delay code allocation information. It also features the complete mapping of this company's delay code allocation processes and …
A Better Approach For Mishandled Bags Industry Measure, Ana Caroline Costa, Daniel B. Ravagnani, Domenico Giuseppe Valente, Vitor Coletti Fernandes
A Better Approach For Mishandled Bags Industry Measure, Ana Caroline Costa, Daniel B. Ravagnani, Domenico Giuseppe Valente, Vitor Coletti Fernandes
Graduate Student Works
Since 1987, the US Department of Transportation (DOT) has ordered US airlines to report baggage handling statistics. The Code of Federal Regulations (CFR), requests each U.S. carrier to report monthly the total number of passengers enplaned, and the total number of mishandled baggage reports (MBR), including lost, pilfered, damaged and delayed baggage. The U.S. DOT also created a mishandled-baggage rate, which represents the total number of MBRs divided by 1,000 passengers enplaned. This KPI is monthly published at the Air Travel Consumer Report. And it is used worldwide to make comparisons between regions, airports, and airlines, characterizing efficiency and consistency …
Contingency Fuel Reduction, Diogo Youssef, Fabiano Gomes De Oliveira, Joao Centeno, Luciano Figueiredo Vale De Oliveira
Contingency Fuel Reduction, Diogo Youssef, Fabiano Gomes De Oliveira, Joao Centeno, Luciano Figueiredo Vale De Oliveira
Graduate Student Works
This project reviews the minimum fuel regulations for commercial passenger flights in different countries and intends to scientifically support a change in the existing contingency fuel requirement regulation in Brazil. This change represents fuel savings for Brazilian air operations, and it deploys into competitive advantage for Brazilian airlines compared to foreign air operators. The objective of this project is to provide the Brazilian civil aviation regulators with the necessary data to justify the reduction of the contingency fuel values from the current 10% to 5%. This project bases the analysis on the historical data of fuel planning and fuel consumption …
Automated Disruption Assistance, Christian Gruber Delamare, Douglas Cabrera Lopes, Patrice Ramos, Raioni De Oliveira Santos
Automated Disruption Assistance, Christian Gruber Delamare, Douglas Cabrera Lopes, Patrice Ramos, Raioni De Oliveira Santos
Graduate Student Works
During the last decade, commercial aviation in Brazil has grown significantly, overcoming the number of 100 million passengers per year. The intense operation represents a challenge for the air carriers, especially during flight disruptions. In Brazil, besides the re-accommodation of the passengers into other flights, under certain circumstances, the ANAC 400 resolution requires the airlines to provide a series of material assistance. Meal, transport, and hotel make part of the exigences stated by the ANAC 400.
Our study aims to analyze the current process that is mainly manual and propose to automatize several steps through a self-service solution. The researchers …
A Study On Spare Aircraft In Brazilian Airlines, Clarissa Pinheiro Pereira, Eduardo Sakashita, Eliudes Del Grande, Guilherme Bevilacqua
A Study On Spare Aircraft In Brazilian Airlines, Clarissa Pinheiro Pereira, Eduardo Sakashita, Eliudes Del Grande, Guilherme Bevilacqua
Graduate Student Works
All around the globe, the airlines struggle to sustain profitability. They are deeply affected by the region’s economy. It goes from the fuel price and exchange rate to the level of employment and average salary. That makes it imperative to control the cost, and also to balance very well the cost and level of service. Aircraft utilization is one KPI that measures productivity. Once the airline has a high aircraft utilization, it means that the resource has been productive, hence more cost-efficient.
On the other hand, flight cancelations and delays result in costs and passengers’ dissatisfaction. In Brazil, there is …
An Evaluation Of The Operational Restrictions Imposed To Congonhas Airport By Iac 121-1013, Glanski O.C. Pacheco Jr., Marcus Camargo
An Evaluation Of The Operational Restrictions Imposed To Congonhas Airport By Iac 121-1013, Glanski O.C. Pacheco Jr., Marcus Camargo
Graduate Student Works
The objective of this study is to propose a review of the operational restrictions imposed on Congonhas airport by IAC 121-1013, seeking a balance between flight safety and operational efficiency.
The researchers calculated the landing performance (using specific software), taking into account particular aircraft system failures that increase landing distance. The results indicated that the measures imposed by the IAC have little or no effect on the operational safety increase. Additionally, the restrictions created operational complexity for the airport and reduced its efficiency by impacting airline costs. At the end of the study, the researchers suggest a reissue of the …
Training Synergy, Andre Vieira Caputo, Everton Amieiro, Lucio De Araujo Alves, Renan Dapena Roveran
Training Synergy, Andre Vieira Caputo, Everton Amieiro, Lucio De Araujo Alves, Renan Dapena Roveran
Graduate Student Works
Brazil is facing a growth in the airline industry where all the major airlines are currently hiring pilots, flight attendants, and mechanics. One of the challenges of those airlines is to provide training for all these professionals. Many times they do not have instructors or classrooms available. It is crucial for the airlines to promote faster and better training, to reduce cost, save time and resources to prepare a better professional. With this capstone, we want to show the possibility of increasing the cost performance of airline training by providing alternatives to airlines. The idea is to promote synergy between …
Engine Light Repair Shop Evaluation For A Brazilian Airline, Gustavo Henrique Melhado Trevilatto, Marcelo Teodoro Miranda
Engine Light Repair Shop Evaluation For A Brazilian Airline, Gustavo Henrique Melhado Trevilatto, Marcelo Teodoro Miranda
Graduate Student Works
The maintenance cost of a commercial aircraft comprises airframe, components, and engines. The most expensive of them are engines, which may represent up to 60% of an aircraft cost, and therefore will have a significant impact on any airline finance. As a result, engine fleet maintenance management is crucial for any airline sustainability. Apart from heavy maintenance where life limited parts are replaced and its performance restored, aircraft engines are often required to come off wing for light repair due to operational issues like foreign object damage, high oil consumption, and vibration issues. In other cases, even though being operational, …
Cleared To Land: Pilot Visual Detection Of Small Unmanned Aircraft During Final Approach, Ryan J. Wallace, Samuel M. Vance, Jon M. Loffi, Jamey Jacob, Jared C. Dunlap, Taylor A. Mitchell, Robert Thomas, Seabrook R. Whyte
Cleared To Land: Pilot Visual Detection Of Small Unmanned Aircraft During Final Approach, Ryan J. Wallace, Samuel M. Vance, Jon M. Loffi, Jamey Jacob, Jared C. Dunlap, Taylor A. Mitchell, Robert Thomas, Seabrook R. Whyte
International Journal of Aviation, Aeronautics, and Aerospace
Sighting reports of unmanned aircraft systems (UAS) by pilots, air traffic controllers, and other aviation stakeholders have continued to rise since the Federal Aviation Administration (FAA) began tracking in 2014. In 2018, the FAA received 2,307 such reports, with 22.8% (n = 526) occurring during the final approach phase of flight. The threat of a midair collision between a manned aircraft and UAS is heightened during the final approach phase of flight, as the aircraft transitions from higher-altitude airspace to the low-altitude arena, now shared with drones. Absent UAS sense and avoid systems, pilots are forced to rely on …
The Effects Of Erosion Structures On Triplett Creek From The Fall Of 2016, 2017, And 2018, Haylee Winters
The Effects Of Erosion Structures On Triplett Creek From The Fall Of 2016, 2017, And 2018, Haylee Winters
Posters-at-the-Capitol
Triplett Creek is a tributary of the Licking River. It runs through Morehead, KY, where we are conducting our research.
The creek was modified in the 1970s but construction was halted before the project was complete. Unfortunately, the result was an increase in overflow and subsequent riverbank erosion. The city installed sediment trap rocks in hopes of slowing down the water and decreasing erosion. We are using drones and photogrammetric software to map the area and compare images of the river to determine erosion rates. The new images will be compared to ones taken in previous years to visualize the …
Cara Menyembunyikan Aplikasi, Fokus Tekno
Cara Menyembunyikan Aplikasi, Fokus Tekno
Fokus Tekno
The Jump Seat Experience, Luke Moriarty
The Jump Seat Experience, Luke Moriarty
Student Works
It was a Tuesday afternoon as I sat in the conference room of Aegean Airlines, an airline based in the country of Greece. My fellow peers, professors and I were here on a study abroad program, currently participating in a week long workshop with the airline company. It was lunch time, all gathered around at rectangle tables when we found out the answer to our long-anticipated question. The Chief Pilot stood up stating he had an announcement to make. All of the students including myself had a look confusion and anticipation on our faces, we wondered could this be what …
Take Off To Superiority: The Evolution & Impact Of U.S. Aircraft In War, Lane Weidner
Take Off To Superiority: The Evolution & Impact Of U.S. Aircraft In War, Lane Weidner
Honors Theses
Military aviation has become a staple in the way wars are fought, and ultimately, won. This research paper takes a look at the ways that aviation has evolved and impacted wars across the U.S. history timeline. With a brief introduction of early flight and the modern concept of an aircraft, this article then delves into World Wars I and II, along with the Cold, Korean, Vietnam, and Gulf Wars. The current War on Terrorism is then investigated, and finally, a look toward the future. Topics covered include the newest aircraft of each era, technological advancements, and how strategy and war …
Assessing Impacts Of Decentralizing Airpower Command And Control, Allen Goodwin Peck
Assessing Impacts Of Decentralizing Airpower Command And Control, Allen Goodwin Peck
Doctoral Dissertations and Master's Theses
Centralized control is a fundamental tenet of joint airpower doctrine, yet there are operational situations in which some degree of decentralization may be appropriate. The purpose of this research was to quantitatively assess the impacts of decentralizing the command and control (C2) of airpower under varying operational conditions. The research used the experimental method to test hypotheses regarding decentralization of control. JAEX, a stochastic, attrition-based Blue-versus-Red war gaming model, generated the required data.
The mean difference between JAEX outcomes under centralized control and outcomes under decentralized control constituted the dependent variable for each experiment. The independent variables were the operational …
The Pioneering Legacy And Consequence Of Wernher Von Braun, Ethan S. Wilt
The Pioneering Legacy And Consequence Of Wernher Von Braun, Ethan S. Wilt
Student Publications
The fundamental research question of this paper revolves around the idea of; would it have been possible for the United States to land on the Moon by the close of the decade if it hadn’t been for the effort, influence, and work of Wernher von Braun? The secondary question of the paper is what significant accomplishments and work did von Braun contribute to the United States space flight program that consequently led to the success in 1969? Through the effort, work, and influence of Wernher von Braun, it was possible for the United States to land on the Moon in …
The Flight Risk Perception Scale (Frps): A Modified Risk Perception Scale For Measuring Risk Of Pilots In Aviation, Scott R. Winter, Dothag Truong, Joseph R. Keebler
The Flight Risk Perception Scale (Frps): A Modified Risk Perception Scale For Measuring Risk Of Pilots In Aviation, Scott R. Winter, Dothag Truong, Joseph R. Keebler
Publications
Risk and risk perception remain focal areas of research within the aviation domain. The purpose of the current study was to assess an existing measure of a 26-item self-risk perception scale for pilots. A sample of 490 participants was used in the present study, and a confirmatory factor analysis was conducted on the original 26-item instrument. The findings indicated that there was a poor model fit of the original instrument. Through the use of modification indices, a new 13-item scale was produced, which resulted in a second-order CFA model. Flight risk was shown to be the second-order construct with general …
Segmentation Of Severe Occupational Incidents In Agribusiness Industries Using Latent Class Clustering, Fatemeh Davoudi Kakhki, Steven Freeman, Gretchen Mosher
Segmentation Of Severe Occupational Incidents In Agribusiness Industries Using Latent Class Clustering, Fatemeh Davoudi Kakhki, Steven Freeman, Gretchen Mosher
Faculty Publications
One of the principle objectives in occupational safety analysis is to identify the key factors that affect the severity of an incident. To identify risk groups of occupational incidents and the factors associated with them, statistical analysis of workers’ compensation claims data is performed using latent class clustering, for the segmentation of 1031 severe occupational incidents in agribusiness industries in the Midwest region of the United States between 2008–2016. In this study, severe incidents are those with workers’ compensation costs equal to or greater than $100,000 (USD). Based on the latent class clustering results, three risk groups are identified with …
Competency Based Education: A Framework For A More Efficient And Safer Aviation Industry, Flavio A. C. Mendonca Ph.D., Julius Keller Ph.D., Brian G. Dillman Ph.D.
Competency Based Education: A Framework For A More Efficient And Safer Aviation Industry, Flavio A. C. Mendonca Ph.D., Julius Keller Ph.D., Brian G. Dillman Ph.D.
Publications
Aircraft design and reliability as well as pilots’ education and training have steadily and significantly improved in the last 20 years. Nevertheless, high-profile accidents still occur, even when the aircraft and related systems are operating adequately. Controlled flight into terrain, runway incursions accidents, and loss-of-control-in-flight are examples of mishaps in which inadequate decision-making, poor leadership, and ineffective communication are frequently cited as contributing factors. Conversely, the investigation of accidents (e.g., US Airways Flight 1549, in US, in 01/15/2009) and serious incidents (e.g., JJ 3756, in Brazil, in 06/17/2011) have indicated that flight crews have to be flexible and adaptable, think …