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Articles 31 - 60 of 151
Full-Text Articles in Aviation
An Exploratory Study Of General Aviation Visual To Instrument Meteorological Condition Contextual Factors, James Harry Hartman Iii
An Exploratory Study Of General Aviation Visual To Instrument Meteorological Condition Contextual Factors, James Harry Hartman Iii
Doctoral Dissertations and Master's Theses
The purpose of this dissertation was to bridge the existing literature gap of outdated contextual factor (CF) research through examination and determination of current General Aviation (GA) Title 14 Code of Federal Regulations (CFR) Part 91 visual flight rules (VFR)-into-instrument meteorological condition (IMC) contextual factors. Contextual factors are a multifaceted arrangement of pertinent events or occurrences contributing to pilot accidents in weather-related decision-making errors. A total of 46 contextual factors were identified and examined from the reviewed research literature. The study examined and determined the presence of the 46 contextual factors, frequencies, and manifestations in the GA VFR-into-IMC Aviation Accident …
Geomagnetic Aided Dead-Reckoning Navigation, Andrei Cuenca
Geomagnetic Aided Dead-Reckoning Navigation, Andrei Cuenca
Doctoral Dissertations and Master's Theses
The dependence of modern navigation methods on global positioning systems has led to developing alternative algorithms for localization, capable of providing reliable and robust estimations. Global position system is commonly used in a vast majority of the world’s devices, and it can supply real time position and velocity information. However, its accuracy can be compromised by external operational effects such as signal availability, cyber-attacks or weather conditions. This thesis investigates an alternative approach to enhance navigation in GPS-denied environments. Particularly, it develops an integrated navigation architecture based on geomagnetic referencing models capable of dead reckoning at GPS denied intervals. A …
Examining Unstable Approach Predictors Using Flight Data Monitoring Information, David Alan Carroll
Examining Unstable Approach Predictors Using Flight Data Monitoring Information, David Alan Carroll
Doctoral Dissertations and Master's Theses
The approach and landing phase of flight is statistically the most dangerous part of flying. While it only accounts for 4% of flight time, it represents 49% of commercial jet mishaps. One key to mitigating the risks involved in this flight segment is the stabilized approach. A stabilized approach requires meeting rigorous standards for many flight parameters as the aircraft nears landing. Exceeding any of these parameters results in an unstable approach (UA). The energy management (EM) accomplished by the flight crew, represented by the EM variables in the study, influences the execution of a stabilized approach.
While EM is …
Predicting General Aviation Accidents Using Machine Learning Algorithms, Bradley S. Baugh
Predicting General Aviation Accidents Using Machine Learning Algorithms, Bradley S. Baugh
Doctoral Dissertations and Master's Theses
No abstract provided.
An Aviation Weather Preflight Decision Support Tool To Improve Ga Pilots Preflight And Inflight Performance, Jayde M. King
An Aviation Weather Preflight Decision Support Tool To Improve Ga Pilots Preflight And Inflight Performance, Jayde M. King
Doctoral Dissertations and Master's Theses
Low hour, inexperienced General Aviation (GA) pilots account for the majority of weather-related incidents, which often result in fatalities. Previous research identifies poor preflight planning practices and a lack of aviation weather knowledge as key contributing factors to the high novice private pilot accident and fatality rate. Research invested into resolving these issues often attempt to introduce new inflight weather technology to assist pilots with weather avoidance. However, these interventions usually result in pilots using the information to strategically navigate closer to degraded weather conditions (Beringer & Ball, 2004; Burgess & Thomas, 2004). Therefore, the purpose of this study was …
Determinants Of Aviation Students’ Intentions To Use Virtual Reality For Flight Training, Stephanie Gill Fussell
Determinants Of Aviation Students’ Intentions To Use Virtual Reality For Flight Training, Stephanie Gill Fussell
Doctoral Dissertations and Master's Theses
Immersive simulation technology has been incorporated into numerous training environments, including medicine, engineering, and marketing. The aviation industry, in particular, has a history of embracing technology to enhance training and has especially regulated the requirements of devices for flight training. Virtual reality (VR) is the newest technology being adapted for training purposes. Many educational institutions training providers are incorporating virtual environments (VE) and VR systems into curricula and training programs to expand educational opportunities, enhance learning, promote deep cognitive learning, and leverage the abilities of a generation of students who have adopted technology from an early age.
As VR is …
Pilot’S Willingness To Operate In Unmanned Aircraft System Integrated Airspace, Lakshmi Vempati
Pilot’S Willingness To Operate In Unmanned Aircraft System Integrated Airspace, Lakshmi Vempati
Doctoral Dissertations and Master's Theses
The interest in Unmanned Aircraft Systems (UAS) use for private, civil, and commercial purposes such as package delivery, inspection, surveillance, and passenger and cargo transport has gained considerable momentum. As UAS infiltrate the National Airspace System (NAS), there is a need to not only develop viable, safe, and secure solutions for the co-existence of manned and unmanned aircraft, but also determine public acceptance and pilot’s willingness to operate an aircraft in such an integrated environment. Currently there is little or no research on pilot’s perceptions on their willingness to operate an aircraft in UAS integrated airspace and airports.
The purpose …
Safety Systems, Culture, And Passengers’ Willingness To Fly In Autonomous Air Taxis, Kenneth Alexander Ward
Safety Systems, Culture, And Passengers’ Willingness To Fly In Autonomous Air Taxis, Kenneth Alexander Ward
Doctoral Dissertations and Master's Theses
As city populations grow, the transportation industry plans to alleviate traffic congestion by introducing the urban air mobility (UAM) concept, in which small passenger and cargo aircraft augment metropolitan transportation networks. A key component of UAM is that of air taxis, which are on-demand air services for individuals and small groups. In addition, UAM companies are designing the aircraft to operate fully autonomously: The intent is for the vehicles to arrive and transport people from point to point without input from human pilots.
In studies of passengers’ perceptions, researchers found that safety was among the top passenger concerns. The international …
Evaluating Scenarios That Can Startle And Surprise Pilots, Rahim Daud Agha
Evaluating Scenarios That Can Startle And Surprise Pilots, Rahim Daud Agha
Doctoral Dissertations and Master's Theses
Startle and surprise on the flight deck is a contributing factor in multiple aviation accidents that have been recognized by multiple aviation safety boards. This study identified the effects startle and surprise had on commercial pilots with single and multiengine ratings. Surprise is defined here as something unexpected (e.g., engine failure), while startle is the associated exaggerated effect of an unexpected condition (e.g., thunder sound). Forty pilots were tested in a basic aviation training device configured to a Cessna 172 (single-engine) and a Baron 58 (multi-engine). Each pilot flew the single- and multiengine aircraft in a scenario that induced an …
Cybersecurity Vulnerability Analysis And Countermeasures Of Commercial Aircraft Avionic Systems, Dhafer Fayez Alqushayri
Cybersecurity Vulnerability Analysis And Countermeasures Of Commercial Aircraft Avionic Systems, Dhafer Fayez Alqushayri
Doctoral Dissertations and Master's Theses
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, passing through airport security, and connecting to Wi-Fi and the embedded inflight entertainment system.
Cyber technologies and connectivity expose aviation to a dangerous and costly world of cyber threats that pose a major challenge of an attack which makes the risks difficult to understand or to define. In addition, the opportunities for attacks continually grow as new services and systems are developed. This thesis …
Pilot Acceptance Of Personal, Wearable Fatigue Monitoring Technology: An Application Of The Extended Technology Acceptance Model, Rachelle Lynne Strong
Pilot Acceptance Of Personal, Wearable Fatigue Monitoring Technology: An Application Of The Extended Technology Acceptance Model, Rachelle Lynne Strong
Doctoral Dissertations and Master's Theses
The research problem of pilot fatigue has been referenced as a causal factor for aircraft accidents in many United States National Transportation and Safety Board (NTSB) accident reports; however, the United States Code of Federal Regulations 14 CFR Part 117, Flight and Duty Limitations and Rest Requirements for Flight Crew Members, does not provide a tangible means of measuring fatigue for aircraft crew members. This problem is relevant to the airline industry and the travelling public because pilot fatigue is preventable as a causal factor in aviation accidents, and pilots need an accurate way to measure it. Adoption of a …
Organizational Design Of Secondary Aviation/Aerospace/Engineering Career Education Programs, Susan Kelly Archer
Organizational Design Of Secondary Aviation/Aerospace/Engineering Career Education Programs, Susan Kelly Archer
Doctoral Dissertations and Master's Theses
Modern nations operate within a global economy, relying heavily on the aviation industry for efficient and effective transportation of passengers and goods. The Boeing 2018 Pilot and Technical Outlook Report indicated that over the next 20 years, the aviation industry will need almost two and a half million new aircrew and maintenance employees to meet anticipated global demand. The industry will also need engineers, aviation managers, and workers in other aviation and aerospace disciplines. Aviation and aerospace jobs require solid backgrounds in mathematics, science, and technology; the development of pre-college aviation / aerospace / engineering career education programs would presumably …
Predicting Pilot Misperception Of Runway Excursion Risk Through Machine Learning Algorithms Of Recorded Flight Data, Edwin Vincent Odisho Ii
Predicting Pilot Misperception Of Runway Excursion Risk Through Machine Learning Algorithms Of Recorded Flight Data, Edwin Vincent Odisho Ii
Doctoral Dissertations and Master's Theses
The research used predictive models to determine pilot misperception of runway excursion risk associated with unstable approaches. The Federal Aviation Administration defined runway excursion as a veer-off or overrun of the runway surface. The Federal Aviation Administration also defined a stable approach as an aircraft meeting the following criteria: (a) on target approach airspeed, (b) correct attitude, (c) landing configuration, (d) nominal descent angle/rate, and (e) on a straight flight path to the runway touchdown zone. Continuing an unstable approach to landing was defined as Unstable Approach Risk Misperception in this research. A review of the literature revealed that an …
Assessing If Motivation Impacts General Aviation Pilots’ Persistence In Varying Weather Conditions, Sabrina Woods
Assessing If Motivation Impacts General Aviation Pilots’ Persistence In Varying Weather Conditions, Sabrina Woods
Doctoral Dissertations and Master's Theses
Continued flight under visual flight rules into instrument meteorological conditions is the predominant cause for fatal accidents by percentage, for general aviation aircraft operations. It is possible that a pilot’s motivation or reason for flying will override other safer, more logical courses of action when a hazard presents itself. The decision appears to stem from a willingness to persist in a course of action despite factors that indicate an alternate and safer course is warranted. This research addresses what is currently presumed about the decision to continue flying under visual flight rules into instrument conditions and marries those ideas with …
Redefining Creep: A Comprehensive Analysis Of Aviation Accident Survivability, Michael Knott
Redefining Creep: A Comprehensive Analysis Of Aviation Accident Survivability, Michael Knott
Doctoral Dissertations and Master's Theses
Given the sheer amount of flights that occur on a daily basis around the world, aviation accidents are going to occur. The principles ensuring that an accident is as safe as possible are considered aircraft survivability or crashworthiness which is analyzed using the acronym CREEP; Container, Restraint, Environment, Energy Absorption, and Post-Crash Factors. CREEP is used by investigators to analyze survivability after a crash, but has significant short falls. By only focusing on a crash, CREEP misses several survivability concepts applicable to aviation such as aircraft equipped with ejection seats, inflight environmental factors, and high …
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 …
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 …
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 …
Benefits Of Additional Runway Crossings On Parallel Runway Operations, Sergio Ezequiel Taleisnik
Benefits Of Additional Runway Crossings On Parallel Runway Operations, Sergio Ezequiel Taleisnik
Doctoral Dissertations and Master's Theses
As the air transportation industry expands, airports face numerous challenges to manage the increasing traffic. Among these problems, runway crossings are a considerable source of ground traffic inefficiency and risk. Building end-around taxiways are the only strategy to avoid crossings, but these are not always feasible, and therefore airport planners must find alternatives. This study consisted of a simulation over an airport that currently requires a vast amount of its arrivals to go through runway crossings in order to reach the apron; the airport simulation software utilized was the Total Airspace and Airport Modeler (TAAM). The process began with a …
Aviation Safety Action Program In The United States Air Force: Mobility Aircrews’ Intentions To Use Safety Reporting, Travis Jared Whittemore
Aviation Safety Action Program In The United States Air Force: Mobility Aircrews’ Intentions To Use Safety Reporting, Travis Jared Whittemore
Doctoral Dissertations and Master's Theses
No abstract provided.
A Behavioral Research Model For Small Unmanned Aircraft Systems For Data Gathering Operations, Paul Leonard Myers Iii
A Behavioral Research Model For Small Unmanned Aircraft Systems For Data Gathering Operations, Paul Leonard Myers Iii
Doctoral Dissertations and Master's Theses
According to Hitlin (2017) of the Pew Research Center, only 8% of U.S. citizens own an unmanned aircraft. Additionally, regarding feelings if U.S. citizens saw an unmanned aircraft flying close to where they live, 26% say they would be nervous, 12% feel angry, and 11% are scared. As of March 9, 2018, there were 1,050,328 U.S. small unmanned aircraft system (sUAS) registrations compared to 947,970 November 29, 2017. While sUAS use has increased in the U.S., it has lagged when compared to other items for personal use available to U.S. citizens as 92% own cell phones (Anderson, 2015). This slower …
Building And Integrating An Information Security Trustworthiness Framework For Aviation Systems, Anna Baron Garcia
Building And Integrating An Information Security Trustworthiness Framework For Aviation Systems, Anna Baron Garcia
Doctoral Dissertations and Master's Theses
The aviation infrastructure is broadly composed of aircraft, air traffic control systems, airports and public airfields. Much attention has been given to physical security along the years this industry has been expanding; and now, in the new age of interconnection devices, a growing concern about cybersecurity has risen.
The never-ending improvement of new digital technology has given birth to a new generation of electronic-enabled (e-enabled) aircraft that implement a remarkable amount of new technologies such as IP-enabled networks, COTS (commercial off-the- shelf) components, wireless connectivity, and global positioning systems (GPSs). For example, aircraft manufacturers are building wireless systems to reduce …
Safety Culture, Training, Understanding, Aviation Passion: The Impact On Manual Flight And Operational Performance, Karlene Kassner Petitt
Safety Culture, Training, Understanding, Aviation Passion: The Impact On Manual Flight And Operational Performance, Karlene Kassner Petitt
Doctoral Dissertations and Master's Theses
The objective of this study was to understand pilots’ proclivity toward automation usage by identifying the relationship among pilot training, aircraft and systems understanding, safety culture, manual flight behavior, and aviation passion. A survey instrument titled Manual Flight Inventory (MFI) was designed to gather and assess self-reported variables of manual flight behavior, aviation passion, safety culture perception, pilot training, and pilot understanding. Demographic data and automation opinion-based questions were also asked to fully understand pilots’ thoughts on automation, safety culture, policies, procedures, training methodologies and assessment measures, levels of understanding, and study techniques. Exploratory Factor Analysis (EFA) was utilized to …
Application Of Dupont’S Dirty Dozen Framework To Commercial Aviation Maintenance Incidents, Greg M. Mellema
Application Of Dupont’S Dirty Dozen Framework To Commercial Aviation Maintenance Incidents, Greg M. Mellema
Doctoral Dissertations and Master's Theses
This study examined the 12 preconditions for maintenance errors commonly known as the Dirty Dozen and applied them to actual incident and accident data provided by a participating airline (PA). The data provided by the PA consisted of Maintenance Event Reports (MERs) (reactive), Maintenance Operations Safety Assessment (MOSA) reports (proactive), and the results of the 2017 Maintenance Climate Awareness Survey (MCAS) (subjective). The MER and MOSA reports were coded by aviation maintenance subject matter experts (SMEs) using the 12 Dirty Dozen categories as the coding scheme, while the MCAS responses were parsed according to the precondition category they best represented. …
Systems Engineering Design Of An Electronically Interactive Application For Runway Incursion Prevention, Yixuan Cheng
Systems Engineering Design Of An Electronically Interactive Application For Runway Incursion Prevention, Yixuan Cheng
Doctoral Dissertations and Master's Theses
Runway Incursion is the leading cause of serious incidents or accidents in airports. One of the most common causes of a runway incursion is airport unfamiliarity. Therefore, the researcher designed an electronically interactive application as a practice tool for pilots to utilize during flight preparation. The objective of this application is to enhance airport familiarity to ultimately reduce runway incursion. This application is interactive, affordable, accessible, and mobile device-based. It was designed using the Systems Engineering approach, following Human Factors Engineering principles to make this application user-friendly and to provide optimized human machine interaction. A model-based Systems Engineering software-CORE was …
Evaluation Of Airline Efficiency And Environmental Impacts Using Data Envelopment Analysis, Arun Paul Saini
Evaluation Of Airline Efficiency And Environmental Impacts Using Data Envelopment Analysis, Arun Paul Saini
Doctoral Dissertations and Master's Theses
Airline efficiency has been a focus of research since the birth of the airline industry. Data envelopment analysis has become a highly accepted methodology for performing efficiency analysis and assessing relative differences between comparable business entities; over the last decade, airline efficiency research has proliferated into this linear programming domain. While early airline efficiency research focused primarily on revenue generation and profitability, growing commercial social responsibility is driving greater investment into understanding and improving the environmental impact of airline operations. This study is intended to partially fill a gap in exigent literature. While limited data envelopment analysis including environmental impacts …
Prediction Of Airport Arrival Rates Using Data Mining Methods, Robert William Maxson
Prediction Of Airport Arrival Rates Using Data Mining Methods, Robert William Maxson
Doctoral Dissertations and Master's Theses
This research sought to establish and utilize relationships between environmental variable inputs and airport efficiency estimates by data mining archived weather and airport performance data at ten geographically and climatologically different airports. Several meaningful relationships were discovered using various statistical modeling methods within an overarching data mining protocol and the developed models were tested using historical data. Additionally, a selected model was deployed using real-time predictive weather information to estimate airport efficiency as a demonstration of potential operational usefulness.
This work employed SAS® Enterprise Miner TM data mining and modeling software to train and validate decision tree, neural network, and …
Determining The Location Of Runway Exits Using Airport Surface Detection Equipment, Christopher Bryan Clemmer
Determining The Location Of Runway Exits Using Airport Surface Detection Equipment, Christopher Bryan Clemmer
Doctoral Dissertations and Master's Theses
Airport surface detection equipment, such as ASDE-X, is used by thirty-five commercially operated airports throughout the United States. ASDE-X is responsible for the safe monitoring of aircraft movements as well as ground support vehicle operating on the airfield. Like most radar-based technologies, ASDE-X can report the position of any aircraft within a one second time interval. This data not only contains the geographic position, but also reports speed, heading, altitude, and aircraft specific characteristics. Using a quantitative approach, this research will use the data reported by ASDE-X to analyze current runway exit locations and develop an improved method of determining …
General Aviation Pilot Acceptance And Adoption Of Electronic Flight Bag Technology, Troy Ernest Techau
General Aviation Pilot Acceptance And Adoption Of Electronic Flight Bag Technology, Troy Ernest Techau
Doctoral Dissertations and Master's Theses
This research used an adapted version of the extended Unified Theory of Acceptance and Use of Technology (UTAUT2) to examine electronic flight bag (EFB) acceptance and adoption for general aviation (GA) pilots. EFBs are a common tool in almost all types of aviation and feature many useful capabilities such as the ability to display traffic, weather, and aviation charts. Despite their potential benefits, while some pilots choose to use EFBs in their flight operations, others continue to rely on traditional paper charts and reference materials. Determination of which factors explain differences in pilot acceptance and adoption of EFBs could influence …