Magnetic levitation assisted aircraft take-off and landing (feasibility study – GABRIEL concept)

Rohács, Dániel; Rohács, József

doi:10.1016/j.paerosci.2016.06.001

Cited by 29 publications

(22 citation statements)

References 33 publications

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“…The Dept of Aeronautics, Naval Architecture and Railway Vehicles of the Budapest University of Technology and Economics (Hungary) had been involved into several large national and international projects investigating the sustainability, sustainable transport development and developing the radically new technologies required complex impact analysis (Rohács, Simongáti 2007;Rigo et al 2007;Bicsák et al 2012;Rohacs 2010;Rohacs et al 2013; Rohacs, D., Rohacs, J. 2016).…”

Section: Some Thoughts On Total Impactmentioning

confidence: 99%

An Application of Impact Calculation Method in Transportation

2020

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Forecasted/projected rise of impacts in modes of transportation has necessitated a new rethinking of the evaluation of total impact. While most researchers deal with defined parts (like environmental impact) of the total impact. The total impact calculation methodology includes: (1) analysis of all the impacts (environmental impact, safety and security, costs, cost benefits and sustainability), (2) evaluation on the transportation system level, (3) as their total value (including all the related sub-systems and elements, i.e. transport infrastructure, transport flow control), (4) generation of total impact index. Such an index might be called as transport total sustainability index. The paper defines the Total Impact Performance Index (TIPI) evaluating the total impact in the form of generalized (summarized) costs, specifies its calculation methodology, develops a simplified Excel based calculation methods. It aims to demonstrate the applicability of this methodology, which involves evaluation of impacts in more detailed forms, two parts calculation methods namely impact of road transport safety aspects and impact of the railway transport. Finally, some selected results of the applied new index calculation and developed methodology are introduced and analysed.

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Section: Some Thoughts On Total Impactmentioning

confidence: 99%

An Application of Impact Calculation Method in Transportation

2020

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“…Endsley (1995a) developed a model of situation awareness in dynamic systems generally, which is still a very widelyprobably mostused representation of the operators decision process. This model improved and adapted to investigation the situation awareness in future aircraft and air traffic controls (Rohacs et al, 2015). The results of investigations the less-skilled pilots' works allow to improving the general operator (load) model for describing and investigating the operator loads.…”

Section: Pilot Load Model Monitoringmentioning

confidence: 99%

Less-skilled pilot decision support

Rohács

Jankovics

Rohács

2019

AEAT

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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.

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“…is active in computational fluid dynamics [92,93], vehicle design [24,25,94], vehicle motion simulation [95,96], developing original and radically new technologies [97][98][99], and has worked on investigation of the thrust vectored aircraft motion at high angle of attack in poststall domain [100,101], approximation of the motion after stall [102], and unconventional and critical flights [103,104]. One of the excellent applications of the analytical models of the aerodynamic coefficients is their using in bifurcation analysis of the poststall motion of thrust vectored aircraft.…”

Section: Example Of Use Of An Advanced Aerodynamic Coefficient Modelmentioning

confidence: 99%

Goal- and Object-Oriented Models of the Aerodynamic Coefficients

Rohács¹

2018

Flight Physics - Models, Techniques and Technologies

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Nowadays, aeronautics discovers new ways of flights near the critical regimes, unconventional aircraft forms, utilizing the micro-electro-mechanical technologies in flow and aircraft control, adaptive and morphing structures, using the structures and controls based on the biological principles, developing highly flexible structures, etc. Before deployment, these new technologies and solutions must be evaluated, tested in wide aerodynamic, flight dynamic simulations that require improved and new type of aerodynamic coefficient models. The chapter overviews the applicable models of the aerodynamic coefficients, introduces some new models and demonstrates how the different models can be applied in different goal-and object-oriented solutions. The following will be shortly explained: (i) how the aerodynamic forces and moments are generating, (ii) how the linear, nonlinear, steady, and nonsteady aerodynamic coefficient structures and forms might be modeled, and (iii) how to harmonize the model with the goal and object of investigations.

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Magnetic levitation assisted aircraft take-off and landing (feasibility study – GABRIEL concept)

Cited by 29 publications

References 33 publications

An Application of Impact Calculation Method in Transportation

An Application of Impact Calculation Method in Transportation

Less-skilled pilot decision support

Goal- and Object-Oriented Models of the Aerodynamic Coefficients

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