TMR4225 Marine Operations Motion of underwater vehicles Spring 2005

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Presentation transcript:

TMR4225 Marine Operations Motion of underwater vehicles Spring 2005 Lecturer: Tor Einar Berg Contact info: Phone 95670 email: Toreinar.berg@marintek.sintef.no

Topics of this course Standard motion equations for submarines Hydrodynamic design aspects for autonomous underwater vehicles (AUV) Case study – HUGIN Hydrodynamic aspects of remotely operated vessels (ROV) Simulators for ROV operation Design studies Pilot training

Why are hydrodynamic aspects important? Power requirement for autonomous vessels Motion stability Design and efficiency of control units (rudders and thrusters) Manoeuvrability of the vessels Deployment of vehicles through splash zone

Use of underwater vehicles Tourism Offshore oil & gas activities Deep ocean studies Seafloor studies, ocean mining Military operations (Bulk transport)

Military application of UUVs The Navy Unnmanned Undersea Vehicle Master Plan defines 4 types of vehicles Man-Portable class, 12-50 kg, operational endurance 10-20 hours Light Weight Vehicle, up to 250 kg, endurance 20-40 hours Heavy Weight Vehicle, approx. 1500 kg, 21 inch diameter Large Vechicle, approx 10 tonnes displacement Tasks may include: Intelligence, Surveillance and Reconnaissance Mine Countermeasures Oceanography Payload Delivery Barrier Control

Naval applications Mine countermeasure vehicle HUGIN 1000 Installed on KNM Karmøy

Flow characteristics for selected missions Seabed mapping (Buzz group activity no 1) Mine countermeasures (Buzz group activity no 2)

Oil & gas example (1) Hugin Used for Ormen Lange pipeline survey 2 more units delivered in 2004

Seabed mapping for pipeline routing Critical parameters for high quality mapping using the Hugin vehicle (Buzz group activity no. 3)

Remotely Operated Vehicles (ROV) Operational observation Installation Inspection Maintenance

Choke valve replacement using an ROV Describe critical parameters for replacement of a choke valve on a subsea production system (Buzz group activity no. 4)

Ocean and seafloor studies (1) NTNU Minerva studies Investigate marine biology, primarily cold water reefs

Ocean and seafloor studies How can ROV systems be used to fill knowledge gaps with respect to lack of environmental and biodiversity data prior to large scale petroleum production in the Barents Sea?