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Articles 1 - 11 of 11
Full-Text Articles in Engineering
Comparative Evaluation Of Investigation Methods For Estimating The Load-Dependent State Of Charge And End Of Discharge Of A Multirotor Uav Battery, Hanna Dibbern, Morten Roßberg, Claudia Werner
Comparative Evaluation Of Investigation Methods For Estimating The Load-Dependent State Of Charge And End Of Discharge Of A Multirotor Uav Battery, Hanna Dibbern, Morten Roßberg, Claudia Werner
Journal of Aviation Technology and Engineering
As the scope of multirotor unmanned aerial vehicle (UAV) applications increases, more attention is being paid to UAV energy requirements, which vary depending on the mission profile. To obtain accurate information about the UAV battery during flight, the idea of a digital twin including a battery state estimation model is promising. For battery state estimation, a Kalman filter combination is the preferred approach in the literature. Comparing different Kalman filters, the unscented Kalman filter has a more accurate estimation for nonlinear systems compared to the extended Kalman filter. In the application of UAV flight with load-dependent flight missions, the comparison …
A New Empirical Law For The Prediction Of The Zero-Lift Pitching Moment Coefficient Of Swept And Tapered Wings, Mondher Yahyaoui
A New Empirical Law For The Prediction Of The Zero-Lift Pitching Moment Coefficient Of Swept And Tapered Wings, Mondher Yahyaoui
Journal of Aviation Technology and Engineering
A new empirical law for the prediction of the zero-lift pitching moment coefficient of trapezoidal wings with linear twist and constant taper and sweep in subsonic flow is introduced. This law is quite general in that it does not rely on the use of charts and spans the normal range of values of taper ratio, aspect ratio, and sweep for subsonic aircraft. It does not, however, accommodate different airfoils along the wingspan and only positive sweep has been considered. The empirical law was first derived for the incompressible regime and then an additional empirical law for the compressibility effect has …
A Qualitative Ethnographic Case Study Exploring The Hispanic/Latinx Interpretations Of Collegiate Aviation Safety Culture, Jorge L. D. Albelo Ph.D., Leo G. Acosta, Flavio A. C. Mendonca Ph.D., Eugene Kim, Felipe Almodovar
A Qualitative Ethnographic Case Study Exploring The Hispanic/Latinx Interpretations Of Collegiate Aviation Safety Culture, Jorge L. D. Albelo Ph.D., Leo G. Acosta, Flavio A. C. Mendonca Ph.D., Eugene Kim, Felipe Almodovar
Journal of Aviation Technology and Engineering
Through a combination of ethnographic principles and a qualitative case study structure, this study strives to understand how Hispanic/ Latinx aviation students perceive the current aviation safety culture in their flight training program. Grounded in the reciprocal safety culture model, the researchers attempt to answer how does Hispanic/Latinx culture influence perceptions towards commitment to aviation safety? and what are Hispanic/Latinx students’ perceptions of their ability to influence aviation safety culture? Three major themes emerged from the data: behavioral signs of safety culture at the collegiate level, obstacles to a sound safety culture, and methods to improve the safety culture. Moreover, …
An Analysis Of Aerodynamic Design Issues Of Box-Wing Aircraft, Paul Jemitola, Paul Okonkwo
An Analysis Of Aerodynamic Design Issues Of Box-Wing Aircraft, Paul Jemitola, Paul Okonkwo
Journal of Aviation Technology and Engineering
The potential of the joined/box-wing aircraft as an environmentally friendly airliner that is capable of meeting current and future emission thresholds led to the investigation of this concept. This study reviews the evolution and current trends in the aerodynamic design of the box-wing aircraft with specific emphasis on box-wing theory, airfoil characteristics, and aerodynamic issues of the box-wing aircraft. The study was undertaken to highlight the distinct features of the box-wing configuration which make it very attractive for future airliners. The study reveals that the box-wing aircraft possesses a significant aerodynamic advantage over conventional aircraft. The box-wing aircraft configuration is …
Evaluating The Efficacy Of Virtual Reality (Vr) Training Devices For Pilot Training, Ryan Guthridge, Virginia Clinton-Lisell
Evaluating The Efficacy Of Virtual Reality (Vr) Training Devices For Pilot Training, Ryan Guthridge, Virginia Clinton-Lisell
Journal of Aviation Technology and Engineering
Virtual Reality (VR) technology is a quickly advancing field that has many documented benefits, including highly detailed environments, accuracy to the real world, and low cost of entry in the flight simulation market. At the time of this study, VR technology has not been well tested or widely accepted in the aviation industry. In this mixed methods study, quantitative and qualitative data was collected on beginning-level instrument pilots (n = 120) while performing a visual traffic pattern at an airport. A one-way ANOVA was used to evaluate the equivalence of each group in the study based on previous flight and …
A Literary Survey On The Challenges Of Adopting Lean In Aerospace Production And Aviation Maintenance, Seanan C. Lee
A Literary Survey On The Challenges Of Adopting Lean In Aerospace Production And Aviation Maintenance, Seanan C. Lee
Journal of Aviation Technology and Engineering
Lean production began as a new method for creating value through the elimination of waste, continuous process improvement by workers, and fostering respect for people. Despite its success in other industries, the significantly lower production volume, the substantially higher complexity, and the service-oriented nature of aviation maintenance demand significant adaptation of Lean principles to be effective. The lack of a holistic study on Lean adoption for aerospace production and aviation maintenance organizations hinders transformation as the two industries are intertwined in product and characteristics. Lean adoption in aerospace production is hindered by the lingering notion that it is an ‘‘automotive …
Covid-19: Visualized Qualitative Aviation Research Themes, Chien-Tsung Lu, Huabo Sun
Covid-19: Visualized Qualitative Aviation Research Themes, Chien-Tsung Lu, Huabo Sun
Journal of Aviation Technology and Engineering
The purpose of this study is to review pandemic-related publications that help the aviation industry cope with pandemic outbreaks like that of COVID-19. Published documents were searched and downloaded from academic libraries including Web of Science for a qualitative analysis. After the triangulation of publications for decisionmakers, and researchers, all important research clusters were visually generated based on the VOSviewer process. Some research clusters were further discussed for a thorough understanding of existing research perspectives. The result discovered that wearing a face mask and vaccination have been the two most effective means to counteract pandemic outbreaks. Additional findings were extracted …
A Comparison Of Airport Risks: Unmanned Aircraft Systems (Uas) Sightings, Wildlife Strikes, And Runway Incursions, Cheng Wang, Sarah M. Hubbard
A Comparison Of Airport Risks: Unmanned Aircraft Systems (Uas) Sightings, Wildlife Strikes, And Runway Incursions, Cheng Wang, Sarah M. Hubbard
Journal of Aviation Technology and Engineering
To provide a context for the potential threat of unmanned aircraft systems (UAS) sightings on airport operations, this paper compares the characteristics of UAS sightings with two common airport threats: wildlife strikes and runway incursions. This study analyzed over 60,000 events in a three-year period (September 2016 to August 2019), including 6,551 UAS sightings from the Federal Aviation Administration (FAA) UAS Sightings Report database, 47,574 wildlife strikes from the FAA Wildlife Strike database, and 6,041 runway incursions from the FAA Runway Safety database. The results suggest both similarities and differences among the airport threats. Both UAS sightings and wildlife strikes …
Safety Management Of Wildlife Hazards To Aviation: An Analysis Of Wildlife Strikes In Part 139 Airports In Florida 2011–2020, Tiago Dikerts De Tella, Flavio A. C. Mendonca
Safety Management Of Wildlife Hazards To Aviation: An Analysis Of Wildlife Strikes In Part 139 Airports In Florida 2011–2020, Tiago Dikerts De Tella, Flavio A. C. Mendonca
Journal of Aviation Technology and Engineering
Purpose: The purpose of this study was threefold: (1) to investigate wildlife strike reporting trends in Part 139 airports in the state of Florida (2011–2020); (2) to evaluate the existence of a difference in the rate of reported wildlife strikes between the seasons of the year (2011–2020); and (3) to develop information based upon the data analyzed that can be used for the safety management of wildlife hazards in Florida.
Design/methodology: The researchers in this study answered the research questions through the analyses, revision, and evaluation of existing wildlife strike and aircraft operations data. The data analyzed in this …
Flight Testing Gls Approaches Enabled By Wide Area Corrections In Kerkyra, Greece, Thomas Dautermann, Thomas Ludwig
Flight Testing Gls Approaches Enabled By Wide Area Corrections In Kerkyra, Greece, Thomas Dautermann, Thomas Ludwig
Journal of Aviation Technology and Engineering
Many airports with a high value to commercial air traffic have spatial or budgetary constraints which prevent the installation of a precision approach system. We previously designed a low-cost precision approach system which combines the advantages of both ground-based and satellite-based augmentation systems by using a converter between them in order to allow GAST-A approach types. We installed, operated, and flight-tested such a system at Kerkyra Airport using an A320 aircraft. During these, we recorded data from a commercial multimode receiver as well as GPS raw data in order to prove the feasibility of the system. Data were analyzed using …
Model-Based Evaluation Of Energy Systems For Multirotor Uav Based On Batteries And Fuel Cells, Mika Suwe, Martje Eigenseer, Claudia Werner
Model-Based Evaluation Of Energy Systems For Multirotor Uav Based On Batteries And Fuel Cells, Mika Suwe, Martje Eigenseer, Claudia Werner
Journal of Aviation Technology and Engineering
In this study, two multirotor unmanned aerial vehicle (UAV) energy systems are comparatively evaluated via a modelling process, namely a battery electric system and a hybrid fuel cell and battery system. Technical, economic, and ecological evaluation parameters are considered. The evaluation is performed on three different mission types: a 10 km delivery mission, a 3000 m2 facade inspection, and a nine-minute drone show, to represent the transport, monitoring, and event sectors. Results are calculated via a modelling process first simulating the required power profiles for each mission and then simulating both energy systems’ operational behavior during each mission. The resulting …