Jozsef Rohacs, Istvan Jankovics and Daniel Rohacs
The purpose of this paper is to overview the systems and their elements developing for supporting the less-skilled pi-lots.
Abstract
Purpose
The purpose of this paper is to overview the systems and their elements developing for supporting the less-skilled pi-lots.
Design/methodology/approach
Several European (like EPATS, SAT-Rdmp, Pplane, Esposa, Clean Sky2) and national projects (NASA SATS, Hungarian SafeFly) develop the personal/small aircraft and personal/small aircraft transportation systems. The projects had analysed the safety aspects, too, and they underlined the aircraft will be controlled by so-called less-skilled pilots (owners, renters), having less experiences. The paper defines the cross-connected controls, introduces the methods of subjective analysis in pilot decision processes, improves the pilot workload model, defines the possible workload management and describes the developing pilot decision support system.
Findings
Analysing the personal/small aircraft safety aspects, a unique and important safety problem induced by less-skilled pilots has been identified. The considerable simplification of the air-craft control system, supporting the pilot subjective decisions and introducing the pilot work-load management, may eliminate this problem.
Research limitations/implications
Only the system elements have been used in concept validation tests.
Practical implications
The developing pilot supporting system in its general form has on - board and ground sub-systems, too, except a series of elements integrated into the pilot cockpit environment and control system. Several system elements (sensors, integrated controls, etc.) might be implement now, but the total system need further studies. The subjective decision process needs further development of the methodology and concept validation.
Social implications
The system may catalyse the society acceptance of the personal aircraft and their safer piloting, applicability.
Originality/value
The paper introduces an original supporting system for less-skilled pilots.
Details
Keywords
Utku Kale, Omar Alharasees, Jozsef Rohacs and Daniel Rohacs
The purpose of this paper is to investigate and evaluate the subjective decision-making of pilots during final approach with varying degrees of experience for landing and…
Abstract
Purpose
The purpose of this paper is to investigate and evaluate the subjective decision-making of pilots during final approach with varying degrees of experience for landing and go-around.
Design/methodology/approach
In this research, the “Lorenz Attractor” was modified and used to model the subjective decision-making of pilots during the final approach. For landing and go-around situations, “hesitation frequency” and “decision-making time” were calculated for the subjective decision-making of pilots.
Findings
In this research, the modified Chaotic Lorenz Model was used on MATLAB with varying degrees of experience, namely, student pilots, less-skilled pilots, experienced pilots and well-experienced pilots. Based on the outcomes, the less-skilled pilot needs nearly four times more decision-making time on landing or go-around compared to the well-experienced pilot during the final approach.
Practical implications
Operators (pilots, air traffic controllers) need to make critical and timely decisions in a highly complex work environment, which is influenced by several external elements such as experience level and human factors. According to NASA, 80% of aviation accidents occur due to human errors specifically over the course of the aviation decision-making process in dynamic circumstances. Due to the consequences of this research the operators' training should be redesigned by assisting flight instructors on the weaknesses of pilots.
Originality/value
This research explores the endogenous dynamics of the pilot decision-making process by applying a novel “Chaotic Lorenz Model” on MATLAB. In addition, the operator's total decision time formula was improved by including the decision reviewing time and external factors. Moreover, subjective decision-making model created by the current authors and Wicken's information model were modified to the highly automated systems.
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Keywords
The primary driver of future aviation has recently been sustainability. The rapid development of radically new, disruptive technologies and solutions should be regularly evaluated…
Abstract
Purpose
The primary driver of future aviation has recently been sustainability. The rapid development of radically new, disruptive technologies and solutions should be regularly evaluated to maintain the desired trends in sustainable aviation. The purpose of this research can be listed as follows: (i) to propose a sustainable performance index and methodology (ii) to evaluate the new technologies and solutions, and (iii) apply them to evaluate the effect of technologies and solutions under development.
Design/methodology/approach
This paper introduces a total sustainable performance index for evaluating the sustainability; demonstrates its applicability to future development processes; recognizes the supporting new technologies and solutions by implementing their identification, evaluation and selection processes; and defines the major trends and drivers maintaining the sustainability of the future aviation.
Findings
This study has resulted in a proposed new “total sustainable performance index,” and methodology of identifying key drivers that allow defining the technology and solution-driven trends, and defines the major trends and listed technologies and solutions that may have a determining role in given trends.
Research limitations/implications
There are dilemmas on taking into account the positive effects of aviation on the economy and society that may overwrite the costs and limited information about the foresight on new technologies and solutions.
Practical implications
It depends on access to required inputs.
Social implications
Two-way effects of solid expectations of society on the possible greening of aviation can be listed as the social implication of this research.
Originality/value
The proposed “total sustainability performance index” totally evaluates sustainability, including a penalty, considering the policy (regulation) and interest of future generations.
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Omar Alharasees, Abeer Jazzar, Utku Kale and Daniel Rohacs
Ineffective communication consequences can be life-threatening and drastic. Communication misunderstandings are frequently reported in incidents, accidents and occurrences. This…
Abstract
Purpose
Ineffective communication consequences can be life-threatening and drastic. Communication misunderstandings are frequently reported in incidents, accidents and occurrences. This research paper aims to evaluate operator communication load in highly automated systems; distinguish and highlight the communication error factors during flight operations from different perspectives; and provide suggestions to operators to decrease the rate of misunderstandings in aviation communication.
Design/methodology/approach
This study is based on a questionnaire that investigated the critical communication load, including aviation training, standard phraseology, operators’ native language and cultural background. In addition to the effect of using controller–pilot data link communications will be discussed widely. In this research, 110 responses were obtained from pilots and air traffic controller (ATCOs) that vary in 44 countries; approximately 20% were ATCOs, and 75% were pilots.
Findings
This study was designed to assess the level of aviation operators communication load in highly automated systems, identify and illustrate the factors that contribute to communication errors during flight operations from multiple viewpoints, and offer recommendations to operators to minimize the rate of misunderstandings in aviation communication.
Originality/value
This research deals with evaluating the operators’ communication load, which is crucial for the air traffic safety and efficiency.
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Jozsef Rohacs and Daniel Rohacs
The purpose of this paper is to present the first-year results of the EU-supported GABRIEL project on the possible use of magnetic levitation (MagLev) technology to assist…
Abstract
Purpose
The purpose of this paper is to present the first-year results of the EU-supported GABRIEL project on the possible use of magnetic levitation (MagLev) technology to assist aircraft take-off and landing (ATOL).
Design/methodology/approach
Developing a radically new technology is a complex task. It is based on extensive expert analysis, use of technology identification evaluation and selection methods, principle of the design philosophies and development of the radically new technologies.
Findings
A possible solution of using the MagLev technology to assist ATOL was developed and defined, including several original ideas, such as the cart-sledge concept or the unconventional climb principle.
Research limitations/implications
This is a typical “out-of-the-box” project without limitations on the developing new principles and technologies, but it is working on the development of a possible solution within the predictable technical and technological envelopes.
Practical implications
The developed concept should assess whether MagLev technology for the ATOL is feasible, cost-effective and safe.
Social implications
The developed GABRIEL principle may significantly reduce the noise and chemical emissions in airport regions and increase the efficiency of the air transportation system.
Originality/value
The GABRIEL concept is the first concept for using the MagLev technology to assist the takeoff and landing processes related to the commercial civil aviation.