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Harbour Protection Table-Top Exercise HPT2E 20-23 March 2012, La Spezia : HPT2E technologies and platforms Harbour Protection Table-Top Exercise HPT2E 20-23 March 2012, La Spezia : HPT2E technologies and platforms

Date added: 04/01/2012
Date modified: 09/06/2012
Filesize: Unknown

Harbour Protection Table-Top Exercise HPT2E 20-23 March 2012, La Spezia : HPT2E technologies and platforms. Kessel, R. ; Brain and Knowledge (ITA) ; IBR Sistemi (ITA) ; de Rosa, F. NURC-SP-2012-002. April 2012

HPT2E is the Harbour Protection Table-Top Exercise hosted by NURC 20-23 March 2012 in the NURC facilities. HPT2E features red-on-blue serious gaming for maritime force protection in ports and harbours using NURC’s OpenSea Tactical Theatre Simulator. This document is provided to participants in the exercise to brief them in advance on the force protection technologies made available by real-time simulation during the exercise; namely all sensors, effectors, maritime platforms, and miscellaneous objects.

A Matlab package for mission generation of a fleet of gliders. Version 1.0 A Matlab package for mission generation of a fleet of gliders. Version 1.0

Date added: 11/01/2011
Date modified: 09/06/2012
Filesize: Unknown

A Matlab package for mission generation of a fleet of gliders. Version 1.0. Alvarez, A.; Martinez, M. NURC-SP-2011-003. November 2011

The advent of new ocean observing technologies creates new scientific demands. Integrating oceanographic information and harmonizing different observational capabilities are among them. The latter concerns allocating and complementing observational resources to maximize the information content of the oceanographic data collected by a network of different oceanographic platforms. Compatibility between the observing capabilities of the different nodes must be found designing optimum sampling strategies to allow an accurate representation of oceanographic process. These sampling strategies could adapt to the evolution of the environment, considering possible motion limitations of part of the platforms in the network. This report describes a software developed to increase the optimality of sampling missions of a network of underwater gliders that may differ in control and motion capabilities. The procedure employs a statistical model of the spatial variability in the area of interest, extracted from a numerical model. The statistical model is then employed to compute sampling designs minimizing the spatial average variance of the estimated field with respect to the sampled locations. Simulated Annealing is employed as the minimization procedure to find the optimal trajectories of the autonomous platforms. The resulting optimum sampling design incorporates existing operational constraints and platform limitations

The Multistatic Tactical Planning Aid (MSTPA) - User Guide. The Multistatic Tactical Planning Aid (MSTPA) - User Guide.

Date added: 08/01/2011
Date modified: 09/12/2012
Filesize: Unknown

The Multistatic Tactical Planning Aid (MSTPA) - User Guide. Strode, C.; Oddone, M. NURC-SP-2011-002. August 2011

This overview is designed to introduce the user to the major functionality of the Multistatic Tactical Planning Aid in order to facilitate its use within both the scienti c and operational maritime communities. The guide begins with installation instructions followed by a description of the major components of the input le format. This includes the environmental and propagation model details together with sensor and platform motion components. Example output le format is then described together with Matlab code to facilitate more detailed plotting and analysis functionality. The optimisation mode of the tool is introduced and described by means of simple example scenarios. Finally, the batch processing mode is described such that the core acoustic and contact generation modules may be used to generate results while suppressing any graphical output. This may be used to incorporate MSTPA into existing simulation frameworks.

NURC SWATH-USV Concept design and hydrodynamic optimization of an innovative SWAT-Hull form by CFD methods. NURC SWATH-USV Concept design and hydrodynamic optimization of an innovative SWAT-Hull form by CFD methods.

Date added: 06/01/2011
Date modified: 09/12/2012
Filesize: Unknown

NURC SWATH-USV Concept design and hydrodynamic optimization of an innovative SWAT-Hull form by CFD methods. Brizzolara, S.; Curtin, T.; Bovio, M.; Vernengo, G. NURC-SP-2011-001. June 2011.

The report presents the main characteristics and functions of an innovative platform which has been conceived and designed to extend the operational capabilities of current Unmanned Surface Vehicles (USV) in terms of platform stability in waves and of powering requirement at relatively high speed. The main idea which governs the project is the realization of a small autonomous surface unit (6m in overall wetted length) capable of undertaking several tasks in the marine environment even in moderate rough sea conditions. The designed vessel has mainly the ability to locate, recover and launch other members of the autonomous fleet (like AUVs or other underwater devices) and at the same time could carry out a surveillance service of the surrounding areas. To manage with these tasks the vehicle is build to provide a fairly good autonomy which is needed to face with intermediate range missions (100 nautical miles). The choice of a SWATH, Small Waterplane Area Twin Hull form has been motivated by its excellent properties of seakeeping quality, which is combined with a non conventional low resistance underwater hull shape which is able to reduce to a minimum the resistance of the vessel especially at higher speeds. The excellent seakeeping performance are due to the small area of the waterline figure which determine a low reactivity to waves exciting forces and moments. The result is a incomparably stable platform when compared to equivalent conventional monohull or catamaran platform solutions. Moreover, the innovative geometry of the immersed part of the hull lowers the advance resistance thanks to a positive interference effect between the generated wave trains. To obtain the most efficient profile of the underwater bodies a systematic optimization with an automatic procedure have been arranged for the purpose. This is based on a parametric definition of the geometry, a CFD solver and a differential evolution global minimization algorithm. Many experimental data have been verified to test the ability of the software to predict resistance. Simulations have been made both in the air and in the water to compare softwares result with original one and to verify its goodness. As expected all the CFD computations have demonstrated the well superior efficiency of the developed unconventional SWATH technology with respect to current alternatives of hull typologies. The report, after presenting the main characteristics of the vessel and its hydrodynamic properties, describes more in details the concept design following the usual items of the design spiral used by naval architects. So hull form design, hydrostatic properties, main structural layout and dimensioning, weight estimation, intact stability, powering requirement and propulsion layout, auxiliary systems, i.e. active stabilization systems and AUV launching and recovering systems, in our case.

NATO Undersea Research Centre Marine Mammal Risk Mitigation Rules and Procedures NATO Undersea Research Centre Marine Mammal Risk Mitigation Rules and Procedures

Date added: 11/01/2009
Date modified: 06/19/2012
Filesize: 265.06 kB

NURC-SP-2009-002. NATO Undersea Research Centre Marine Mammal Risk Mitigation Rules and Procedures. Kendra L. Ryan. November 2009.

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