Identification of Favourable Free Fall Parameters for the AGaPaS Rescue Catamaran

Clauss, Günther F.; Kauffeldt, Andre ́; Otten, Nils; Stuppe, Sven

doi:10.1115/omae2011-50156

Cited by 4 publications

(3 citation statements)

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“…Kurowski et al [194] developed a satellite-guided SAR system, to be used in special ships and offshore platforms in case a person falls overboard. It consists of three main components: (1) A vest with an Automatic Identification System (AIS), worn by every crew member of a ship or offshore platform; (2) An autonomous twin-hull catamaran USV, referred to as the “rescue vessel” (described in detail in [195,196]); A satellite-aided control station. When a person falls overboard, the AIS vest activates upon contact with the water, and the SAR process starts.…”

Section: Usv Applications For Preventive Maintenance and Disaster mentioning

confidence: 99%

A Survey on Unmanned Surface Vehicles for Disaster Robotics: Main Challenges and Directions

Jorge

Granada

Maidana

et al. 2019

Sensors

141

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Disaster robotics has become a research area in its own right, with several reported cases of successful robot deployment in actual disaster scenarios. Most of these disaster deployments use aerial, ground, or underwater robotic platforms. However, the research involving autonomous boats or Unmanned Surface Vehicles (USVs) for Disaster Management (DM) is currently spread across several publications, with varying degrees of depth, and focusing on more than one unmanned vehicle—usually under the umbrella of Unmanned Marine Vessels (UMV). Therefore, the current importance of USVs for the DM process in its different phases is not clear. This paper presents the first comprehensive survey about the applications and roles of USVs for DM, as far as we know. This work demonstrates that there are few current deployments in disaster scenarios, with most of the research in the area focusing on the technological aspects of USV hardware and software, such as Guidance Navigation and Control, and not focusing on their actual importance for DM. Finally, to guide future research, this paper also summarizes our own contributions, the lessons learned, guidelines, and research gaps.

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Section: Usv Applications For Preventive Maintenance and Disaster mentioning

confidence: 99%

A Survey on Unmanned Surface Vehicles for Disaster Robotics: Main Challenges and Directions

Jorge

Granada

Maidana

et al. 2019

Sensors

141

View full text Add to dashboard Cite

show abstract

“…The tests have shown that the relative motion between the POB and the rescue vehicle impacted by the waves is small, and the person can be rescued even in rough seas (Figure 8). 16 In a second step, the entire search-and-rescue-system was validated. The focus lies on the autonomous approach to the POB by the rescue vessel, maintaining a safety distance to the POB, and maintaining the bearing to the POB automatically.…”

Section: System Testsmentioning

confidence: 99%

AGaPaS: A new approach for search-and-rescue-operations at sea

Kurowski

Lampe

2014

Proceedings of the Institution of Mechanical Engineers, Part M:

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An innovative, satellite-guided search-and-rescue-system will be presented. This system utilises an autonomous rescue vessel to retrieve overboard personnel. The system acts instantaneously, which significantly increases the chance of survival. It was developed for use on special ships or offshore platforms, where workers are subject to adverse weather conditions and overboard personnel are often discovered too late. A substantial challenge is the automation of the autonomously acting rescue vehicle as well as its integration into the superior search-and-rescue-process. To ensure the fastest possible approach to the casualty without endangering the person, a cascaded control concept has been designed. Two-degree-of-freedom control concepts are used to separate the tracking performance from the disturbance rejection. The inner speed control structure is divided into two parts and consists of the control structure itself with an in-line allocation to the device configuration. The contribution mainly addresses the automation of the rescue vessel, the synthesis of the control system of the autonomously acting vehicle as well as the integration into the superior search-and-rescue-process. Finally, some test results of this complex system are shown.

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“…Considering the current development of numerical simulation technologies, it is found that most methods lead to more precise results in shorter computational times at ever increasing bandwidth in maritime applications. A few years ago, it was not conceivable that a standard personal computer would be able to calculate the resistance of a ship in some hours or that it would be possible to calculate complex dynamic processes, like the motion behavior of the freefall lifeboat AGaPaS 2 during a launch [1] or to investigate the efficiency of the Oil Skimming System SOS 3 [2] with CFD-simulations. In this paper, a technique well established for model tests at TUB, will be adapted to RANSE-methods.…”

Section: Introductionmentioning

confidence: 99%

Transient Wave Packets: New Application in CFD-Methods

Clauss

Stuppe

Dudek

2014

Volume 8B: Ocean Engineering

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Detailed knowledge of motion and seakeeping behaviour in an early design stage is indispensable in modern layout of marine offshore structures. Therefore, numerical methods are used to calculate the Response Amplitude Operators (RAO), which are generally based on potential theory or the Reynolds-Averaged-Navier-Stokes-Equation (RANSE). Calculations with potential-codes are commonly used, well established and time-saving. Main disadvantages are the neglect of viscous effects and the hull structure above the still water level. By using RANSE-methods, these nonlinear effects can be investigated in detail, but at the price of calculation time and extensive grid generation. To achieve sufficient RAOs in frequency domain, time-consuming and intensive calculations would be necessary with these CFD-methods, using seastate applications with regular or irregular waves only. Therefore, these methods are not convenient for standard motion analysis by now. Transient Wave Packets (TWP) represent an approved method at model tests, revealing the entire RAO for any offshore structure within one single, short test run. Main advantage of this technique is the accurate predictability and short superposition in space and time. Containing all elementary wavelengths of the generated initial wave spectra, the TWP-method could be used in RANSE-methods, implementing all necessary initial conditions to the CFD-solver. To reduce the calculation effort to a minimum in space and time, the superimposed wave train is generated near the investigated offshore structure by using modified, linear wave theory in spatial domain. To present this method by means of a practical example, the motion and sloshing behaviour of an offshore LNG-carrier (LNGC) are investigated in detail. For validation purpose, all results are compared to model tests, conducted in the seakeeping basin at Technische Universität Berlin (TUB), as well as numerical results of the potential theory solver WAMIT.

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Identification of Favourable Free Fall Parameters for the AGaPaS Rescue Catamaran

Cited by 4 publications

References 0 publications

A Survey on Unmanned Surface Vehicles for Disaster Robotics: Main Challenges and Directions

A Survey on Unmanned Surface Vehicles for Disaster Robotics: Main Challenges and Directions

AGaPaS: A new approach for search-and-rescue-operations at sea

Transient Wave Packets: New Application in CFD-Methods

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