The Experts below are selected from a list of 1305 Experts worldwide ranked by ideXlab platform
Yang Zhou - One of the best experts on this subject based on the ideXlab platform.
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3D Model of Seaplane Domain during Takeoff and Landing Based on Ship Domain Theory
ICTE 2015, 2015Co-Authors: Xueer Qin, J. Weng, Yang ZhouAbstract:As the civil seaplane is an emerging industry in China, its navigation safety needs to be studied. The research on the three-dimensional model of seaplane domain provides the site supervision with technical support during taking-off and landing, and also helps to improve the safety and efficiency of navigation in the operation area. Fujii and Goodwin ship domain model are analyzed by comparison in between. Combined with the navigational characteristics and the safety requirements of seaplane during taking-off and landing, the basic theory of seaplane domain is proposed. On the basis of ship following model, the safety distance between seaplane and ship in encounter is calculated, and a two-dimensional seaplane domain model is established. Additionally, the third vertical dimension model of seaplane domain is determined by its requirements on headroom clearance to prevent collision with the superstructure of ships around. Finally, the developed three-dimensional model is applied in the case in Sanya, China.
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Heterogeneous Port Traffic of Ships and Seaplanes and its Simulation
2015Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Tiedo Vellinga, Serge P. HoogendoornAbstract:Along with the development of the civil seaplane industry, the number of seaplane piers in port areas will increase. As a consequence, port traffic will not only increase, it will also become more heterogeneous, consisting of different types of ships and Seaplanes. This will lead to more complex traffic in such areas. This paper presents a simulation model that has been developed to describe the heterogeneous port traffic of general ships and Seaplanes. Given the different maneuverability of ships and Seaplanes, the heterogeneity of the port traffic is characterized by the vulnerability degree. A method to compute this vulnerability degree is introduced. The simulation model has been developed according to the theory of Cell Transmission Models (CTM). This type of model has shown to be feasible for this research, in terms of application characteristics, the model input requirements, and the matching of output and traffic management demand. Aimed at highly efficient port traffic, the recovery time from the disturbance of a seaplane taking-off or landing is determined as assessment factor of the traffic. The model has been calibrated for the current traffic situation in Port of Sanya in China, where a seaplane pier has been constructed.
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Heterogeneous port traffic of general ships and Seaplanes and its simulation
2014Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Serge P. Hoogendoorn, Tiedo VellingaAbstract:Along with the development of the civil seaplane industry in China and all around the world, the number of seaplane piers in port areas will increase. As a consequence, the port traffic will not only increase, it will also become more heterogeneous, consisting of ships and Seaplanes. This paper presents a simulation model to describe this mixed traffic and investigates the impact of Seaplanes on the ship traffic quantitatively. Given the different maneuverability of ships and Seaplanes, the impact of Seaplanes on port traffic operations is analyzed from three aspects, being traffic separation between Seaplanes and ships, traffic interruption, and traffic priority of Seaplanes. A simulation model has been developed using a Cell Transmission Model (CTM). To evaluate the navigational impact of Seaplanes quantitatively, the traffic recovery time from the disturbance of a seaplane takeoff or landing event is used as an assessment indicator of the model. The model sensitivity analysis indicates that the capacity of a cell is more important than the density of ships. This implies the capacity needs to be estimated more accurately to get a better simulation result.
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Study on the Management Mode of Seaplane Navigation Safety
Advanced Materials Research, 2014Co-Authors: J. Weng, Yang ZhouAbstract:Seaplanes are seemed as ships when they are on the water surface. The first civil seaplane project was carried out in China in the year of 2012. Therefore, the management modes and regulations for seaplane navigation safety are to be studied. Starting from the characteristics of seaplane and its special requirement on navigation safety management, the three dimension (3D) structure for the Management Mode of Seaplane Navigation Safety (MMSNS) is designed based on the Hall 3D structure in System Engineering, together with its model structure. Accordingly, MMSNS is established and its composition is analyzed.
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analysis of risk factors and safety countermeasures of collision between Seaplanes and vessels based on ism theory
International Conference on Transportation Information and Safety, 2013Co-Authors: J. Weng, Yang ZhouAbstract:The civil seaplane industry in China is in the initial stage, and guaranteeing the navigation safety of Seaplanes is of great practical significance. Firstly, according to the dynamic characteristics of Seaplanes during the process of taxiing on the water surface, lifting off and landing, related theories of risk management are utilized to ascertain the factor category of collision between Seaplanes and vessels. Then, the interaction relationships among the factors are discovered and analyzed. Lastly, the Interpretative Structural Modeling (ISM) is applied to obtain the level profile of risk factors of collision between Seaplanes and vessels. Based on the level correlations among risk factors, the safety countermeasures for collision avoidance are put forward. Through investigating the identification and correlation analysis of risk factors of collision between Seaplanes and vessels, the ISM theory and risk response theories are applied to discuss the corresponding safety countermeasures.
A. G. Smith - One of the best experts on this subject based on the ideXlab platform.
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MINISTRY OF SUPPLY
2012Co-Authors: A. G. Kurn, A. G. Smith, I I Model, Testing Technique Employed, T. B. OwenAbstract:Summary.--A description is given of the various techniques evolved in recent years to provide model data as a basis for predicting the full-scale behaviour of a seaplane. The seaplane tank and associated equipment is described in detail, together with the routine methods of operation. The factors affecting the choice of model scale are discussed and the methods of model construction described. A description is given of a typical test programme on a new design to determine the longitudinal and lateral stability on the water, spray and rough water behaviour and water drag. This description is illustrated with typical results for a modem conventional hull of length: beam ratio of about 7. Finally, the design factors affecting the longitudinal stability and spray formation are discussed in Appendices..1. Introduction.--Considerable progress has been made in the last decade in improving the techniques of predicting the full-scale performance of Seaplanes by the use of scale models in the Royal Aircraft Establishment Seaplane Tank. The basic flow conditions on the hull bottoms have also been investigated. While some of the new apparatus and techniques have been briefly referred to in report
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i959 os. od. NETThe Full-Scale Air Drag of Some Flying-Boat By
2012Co-Authors: Flying-boat Seaplanes, A. G. Smith, Cmv Copsri#t ZAbstract:Suncmary.--An analysis has been made of the full-scale measured drag and lift performance, data available on the Sunderland, Solent, Shetland, Sealand, Saro E.6/44 and Princess boat Seaplanes, which all have hulls of fairly orthodox length/beam and fineness ratios but with different degrees of aerodynamic fairing. The drag coefficient and profile drag show progressive decreases from the order of 0.033 to 0.018 and from 1.5 lb to 0.33 lb per 100 lb of all-up weight respectively, the best seaplane being the Princess. The value of the extra-to-induced drag coefficient k, at 1.1 is generally good for all the aircraft and extends up to a C ~ of the order of 1.0. This drag reduction is caused by improvement in hull design, reduction of drag with change of propulsion unit from propeller reciprocating to propeller turbine and turbine jet, and also with increase of size. The hull drag is of the order of 0.22 of the total profile drag for all the aircraft but the ratio of the turbulent skin-friction drag of the idealised wing, hull and tail unit to the actual profile drag, increases to 0.73 for the Princess from 0.4 for the Sunderland. Further drag reductions would be possible if full use were made of recent methods of reducing hult air drag still further by detail fairing and increase of length-to-beamrati0. 1. Introduction.--This report presents some collected data on the full-scale air drag of various British Seaplanes, all of which may be described as being of good orthodox design of the period dating fr0m the late 1930's to 1950. By orthodox design is meant that the aircraft are all highwin
J. Weng - One of the best experts on this subject based on the ideXlab platform.
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3D Model of Seaplane Domain during Takeoff and Landing Based on Ship Domain Theory
ICTE 2015, 2015Co-Authors: Xueer Qin, J. Weng, Yang ZhouAbstract:As the civil seaplane is an emerging industry in China, its navigation safety needs to be studied. The research on the three-dimensional model of seaplane domain provides the site supervision with technical support during taking-off and landing, and also helps to improve the safety and efficiency of navigation in the operation area. Fujii and Goodwin ship domain model are analyzed by comparison in between. Combined with the navigational characteristics and the safety requirements of seaplane during taking-off and landing, the basic theory of seaplane domain is proposed. On the basis of ship following model, the safety distance between seaplane and ship in encounter is calculated, and a two-dimensional seaplane domain model is established. Additionally, the third vertical dimension model of seaplane domain is determined by its requirements on headroom clearance to prevent collision with the superstructure of ships around. Finally, the developed three-dimensional model is applied in the case in Sanya, China.
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Heterogeneous Port Traffic of Ships and Seaplanes and its Simulation
2015Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Tiedo Vellinga, Serge P. HoogendoornAbstract:Along with the development of the civil seaplane industry, the number of seaplane piers in port areas will increase. As a consequence, port traffic will not only increase, it will also become more heterogeneous, consisting of different types of ships and Seaplanes. This will lead to more complex traffic in such areas. This paper presents a simulation model that has been developed to describe the heterogeneous port traffic of general ships and Seaplanes. Given the different maneuverability of ships and Seaplanes, the heterogeneity of the port traffic is characterized by the vulnerability degree. A method to compute this vulnerability degree is introduced. The simulation model has been developed according to the theory of Cell Transmission Models (CTM). This type of model has shown to be feasible for this research, in terms of application characteristics, the model input requirements, and the matching of output and traffic management demand. Aimed at highly efficient port traffic, the recovery time from the disturbance of a seaplane taking-off or landing is determined as assessment factor of the traffic. The model has been calibrated for the current traffic situation in Port of Sanya in China, where a seaplane pier has been constructed.
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Heterogeneous port traffic of general ships and Seaplanes and its simulation
2014Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Serge P. Hoogendoorn, Tiedo VellingaAbstract:Along with the development of the civil seaplane industry in China and all around the world, the number of seaplane piers in port areas will increase. As a consequence, the port traffic will not only increase, it will also become more heterogeneous, consisting of ships and Seaplanes. This paper presents a simulation model to describe this mixed traffic and investigates the impact of Seaplanes on the ship traffic quantitatively. Given the different maneuverability of ships and Seaplanes, the impact of Seaplanes on port traffic operations is analyzed from three aspects, being traffic separation between Seaplanes and ships, traffic interruption, and traffic priority of Seaplanes. A simulation model has been developed using a Cell Transmission Model (CTM). To evaluate the navigational impact of Seaplanes quantitatively, the traffic recovery time from the disturbance of a seaplane takeoff or landing event is used as an assessment indicator of the model. The model sensitivity analysis indicates that the capacity of a cell is more important than the density of ships. This implies the capacity needs to be estimated more accurately to get a better simulation result.
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Study on the Management Mode of Seaplane Navigation Safety
Advanced Materials Research, 2014Co-Authors: J. Weng, Yang ZhouAbstract:Seaplanes are seemed as ships when they are on the water surface. The first civil seaplane project was carried out in China in the year of 2012. Therefore, the management modes and regulations for seaplane navigation safety are to be studied. Starting from the characteristics of seaplane and its special requirement on navigation safety management, the three dimension (3D) structure for the Management Mode of Seaplane Navigation Safety (MMSNS) is designed based on the Hall 3D structure in System Engineering, together with its model structure. Accordingly, MMSNS is established and its composition is analyzed.
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analysis of risk factors and safety countermeasures of collision between Seaplanes and vessels based on ism theory
International Conference on Transportation Information and Safety, 2013Co-Authors: J. Weng, Yang ZhouAbstract:The civil seaplane industry in China is in the initial stage, and guaranteeing the navigation safety of Seaplanes is of great practical significance. Firstly, according to the dynamic characteristics of Seaplanes during the process of taxiing on the water surface, lifting off and landing, related theories of risk management are utilized to ascertain the factor category of collision between Seaplanes and vessels. Then, the interaction relationships among the factors are discovered and analyzed. Lastly, the Interpretative Structural Modeling (ISM) is applied to obtain the level profile of risk factors of collision between Seaplanes and vessels. Based on the level correlations among risk factors, the safety countermeasures for collision avoidance are put forward. Through investigating the identification and correlation analysis of risk factors of collision between Seaplanes and vessels, the ISM theory and risk response theories are applied to discuss the corresponding safety countermeasures.
Serge P. Hoogendoorn - One of the best experts on this subject based on the ideXlab platform.
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Heterogeneous Port Traffic of Ships and Seaplanes and its Simulation
2015Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Tiedo Vellinga, Serge P. HoogendoornAbstract:Along with the development of the civil seaplane industry, the number of seaplane piers in port areas will increase. As a consequence, port traffic will not only increase, it will also become more heterogeneous, consisting of different types of ships and Seaplanes. This will lead to more complex traffic in such areas. This paper presents a simulation model that has been developed to describe the heterogeneous port traffic of general ships and Seaplanes. Given the different maneuverability of ships and Seaplanes, the heterogeneity of the port traffic is characterized by the vulnerability degree. A method to compute this vulnerability degree is introduced. The simulation model has been developed according to the theory of Cell Transmission Models (CTM). This type of model has shown to be feasible for this research, in terms of application characteristics, the model input requirements, and the matching of output and traffic management demand. Aimed at highly efficient port traffic, the recovery time from the disturbance of a seaplane taking-off or landing is determined as assessment factor of the traffic. The model has been calibrated for the current traffic situation in Port of Sanya in China, where a seaplane pier has been constructed.
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Heterogeneous port traffic of general ships and Seaplanes and its simulation
2014Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Serge P. Hoogendoorn, Tiedo VellingaAbstract:Along with the development of the civil seaplane industry in China and all around the world, the number of seaplane piers in port areas will increase. As a consequence, the port traffic will not only increase, it will also become more heterogeneous, consisting of ships and Seaplanes. This paper presents a simulation model to describe this mixed traffic and investigates the impact of Seaplanes on the ship traffic quantitatively. Given the different maneuverability of ships and Seaplanes, the impact of Seaplanes on port traffic operations is analyzed from three aspects, being traffic separation between Seaplanes and ships, traffic interruption, and traffic priority of Seaplanes. A simulation model has been developed using a Cell Transmission Model (CTM). To evaluate the navigational impact of Seaplanes quantitatively, the traffic recovery time from the disturbance of a seaplane takeoff or landing event is used as an assessment indicator of the model. The model sensitivity analysis indicates that the capacity of a cell is more important than the density of ships. This implies the capacity needs to be estimated more accurately to get a better simulation result.
Tiedo Vellinga - One of the best experts on this subject based on the ideXlab platform.
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Heterogeneous Port Traffic of Ships and Seaplanes and its Simulation
2015Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Tiedo Vellinga, Serge P. HoogendoornAbstract:Along with the development of the civil seaplane industry, the number of seaplane piers in port areas will increase. As a consequence, port traffic will not only increase, it will also become more heterogeneous, consisting of different types of ships and Seaplanes. This will lead to more complex traffic in such areas. This paper presents a simulation model that has been developed to describe the heterogeneous port traffic of general ships and Seaplanes. Given the different maneuverability of ships and Seaplanes, the heterogeneity of the port traffic is characterized by the vulnerability degree. A method to compute this vulnerability degree is introduced. The simulation model has been developed according to the theory of Cell Transmission Models (CTM). This type of model has shown to be feasible for this research, in terms of application characteristics, the model input requirements, and the matching of output and traffic management demand. Aimed at highly efficient port traffic, the recovery time from the disturbance of a seaplane taking-off or landing is determined as assessment factor of the traffic. The model has been calibrated for the current traffic situation in Port of Sanya in China, where a seaplane pier has been constructed.
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Heterogeneous port traffic of general ships and Seaplanes and its simulation
2014Co-Authors: Yang Zhou, J. Weng, Winnie Daamen, Serge P. Hoogendoorn, Tiedo VellingaAbstract:Along with the development of the civil seaplane industry in China and all around the world, the number of seaplane piers in port areas will increase. As a consequence, the port traffic will not only increase, it will also become more heterogeneous, consisting of ships and Seaplanes. This paper presents a simulation model to describe this mixed traffic and investigates the impact of Seaplanes on the ship traffic quantitatively. Given the different maneuverability of ships and Seaplanes, the impact of Seaplanes on port traffic operations is analyzed from three aspects, being traffic separation between Seaplanes and ships, traffic interruption, and traffic priority of Seaplanes. A simulation model has been developed using a Cell Transmission Model (CTM). To evaluate the navigational impact of Seaplanes quantitatively, the traffic recovery time from the disturbance of a seaplane takeoff or landing event is used as an assessment indicator of the model. The model sensitivity analysis indicates that the capacity of a cell is more important than the density of ships. This implies the capacity needs to be estimated more accurately to get a better simulation result.