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T.A. Vleming
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2 records found
1
Master thesis
(2025)
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T.A. Vleming, M. Mulder, C. Borst, M.M. van Paassen, Ferdinand Dijkstra, E.J.J. Smeur
Current approach control at Schiphol is mainly based on radar vectors, which offer high flexibility to the air traffic controller. New technologies such as Required Navigation Performance - Authorization Required enable fixed approach routes with curved segments to be flown with high precision. While fixed approach routes are desirable to reduce track miles, to enable continuous descents, and to avoid noise-sensitive areas, decision support is currently only available on the final approach leg whereas earlier support is needed. The shift to fixed routes requires a decision support tool to merge different approach types without increasing the workload. In this paper, the design of the Final Merge Tool (FMT) is presented, which combines projections of downwind traffic with separation markers on the final approach leg. It uses a time-based prediction algorithm and integrates the projections in the existing support tool. The FMT interface is evaluated in a first exploratory real-time simulation with four professional air traffic controllers from the Netherlands Air Traffic Control, comparing different mixes of traffic on fixed routes versus vectored traffic. Results from this evaluation show that the number of commands issued decreased with the tool and that the subjective workload was lower. Controllers were able to use their own strategies with the tool and generally found the support helpful for determining the sequence on final approach. There were no indications that the tool decreased safety, but further research is needed to confirm this with more certainty.
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Current approach control at Schiphol is mainly based on radar vectors, which offer high flexibility to the air traffic controller. New technologies such as Required Navigation Performance - Authorization Required enable fixed approach routes with curved segments to be flown with high precision. While fixed approach routes are desirable to reduce track miles, to enable continuous descents, and to avoid noise-sensitive areas, decision support is currently only available on the final approach leg whereas earlier support is needed. The shift to fixed routes requires a decision support tool to merge different approach types without increasing the workload. In this paper, the design of the Final Merge Tool (FMT) is presented, which combines projections of downwind traffic with separation markers on the final approach leg. It uses a time-based prediction algorithm and integrates the projections in the existing support tool. The FMT interface is evaluated in a first exploratory real-time simulation with four professional air traffic controllers from the Netherlands Air Traffic Control, comparing different mixes of traffic on fixed routes versus vectored traffic. Results from this evaluation show that the number of commands issued decreased with the tool and that the subjective workload was lower. Controllers were able to use their own strategies with the tool and generally found the support helpful for determining the sequence on final approach. There were no indications that the tool decreased safety, but further research is needed to confirm this with more certainty.
Bachelor thesis
(2020)
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E. Aşir, K.C. van Gaalen, M.O. van den Ham, S.H. Han, T. van Herwerden, H.P. Kerckhoffs, R.R. Kortenhorst, N.L.S. Pauly, T.A. Vleming, R. de Voogt, M.D. Pavel, M. Coppola, C. Jux
This report provides an overview of the considerations and decisionsmade during the DSE project from the Faculty of Aerospace Engineering, arriving at the final design of the SolidityONE. The goal was to design a vertical take-off and landing vehicle according to the rules from the 37th annual student design competition by the Vertical Flight Society. This design proves the concept of a rotor with disk solidity equal to or larger than 1.0. Additionally, benefits this design has over existing rotorcraft mean it can be tailored to meet the needs of a specific market...
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This report provides an overview of the considerations and decisionsmade during the DSE project from the Faculty of Aerospace Engineering, arriving at the final design of the SolidityONE. The goal was to design a vertical take-off and landing vehicle according to the rules from the 37th annual student design competition by the Vertical Flight Society. This design proves the concept of a rotor with disk solidity equal to or larger than 1.0. Additionally, benefits this design has over existing rotorcraft mean it can be tailored to meet the needs of a specific market...