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Article
Publication date: 31 October 2018

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.

202

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

Aircraft Engineering and Aerospace Technology, vol. 91 no. 5
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 6 September 2022

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…

396

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.

Details

Aircraft Engineering and Aerospace Technology, vol. 95 no. 3
Type: Research Article
ISSN: 1748-8842

Keywords

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Article
Publication date: 29 April 2014

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…

359

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.

Details

Aircraft Engineering and Aerospace Technology: An International Journal, vol. 86 no. 3
Type: Research Article
ISSN: 0002-2667

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