The thruster is designed to be used in water depths up to 6,000 m. The thruster blades can rotate under the electromagnetic interaction between the motor rotor and stator. This paper applied rans solver and angular momentum current analyzing method to study the effect of gap flow in a rim driven thruster on the torque of the blades when the propeller was replaced by. Manoeuvring thruster bow thruster or stern thruster is a transversal propulsion device built into, or mounted to, either the bow or stern, of a ship or boat to make it more manoeuvrable. Sharkh university of southampton abstract an electric rim driven thruster is a relatively new marine propulsion device that uses a motor in its casing to drive a propeller by its rim and the uid dynamics associated. The voith inline system is the perfect drive for a bow or stern thruster arrangement. Nasas all electric aircraft x57, is used as a case study. Keywords rimdriven thruster, simulationdriven design sdd, autonomous surface vehicle, computer.
Rating is available when the video has been rented. Design and optimization of a hubless rimdriven thruster. The electrical rimdriven thruster consist of an electric torque motor, which drives an inside propeller. Jun 11, 2017 a rimdriven thruster is a marine propeller that doesnt need a hub for transmission of the driving torque. Cavitation and tip vortexes have to be controlled already in the design phase, exploiting. Numerical modelling of rotorstator interaction in rim.
An electric rim driven thruster is a relatively new marine propulsion device which uses a permanent magnet rotor built into a rim around the propeller sharkh et al. Open water performance comparison between hubtype and. This works as a tunnel thruster in upper position, and as an azimuth thruster in lower position. Beside the propeller, the motor has no gears or other mechanical moving parts. Initial published research, based on a scaled cruiseship model, estimated that an efficiency improvement in the order of 7% was achievable. Within this thesis a hubless rim driven thruster for an autonomous surface vehicle asv shall be designed and optimized using ranse simulations.
Conventional propellers need a shaft line driven by a turbine. Silentdynamics customized rim thruster based propulsion solutions applications include tunnel thrusters, and silentdynamics ert thrusters can be configured to be retractable andor azimuthing. Customized webfrontend for automatic execution of cfd simulations. The performance of vertical tunnel thrusters on an. Found this pdf, design of an integrated 100kw permanent magnet synchronous machine in a prototype thruster for ship an alternative solution is a rim driven thruster where the shaft and gear has been removed. The rimdriven thruster is a marine propeller which does not need a hub for transmission of the driving torque. The hubless propeller prevents it from getting tangled. The products are based on many years of experience with building products for the demanding subsea industry. The task is derived from the axatlantic project, aiming at a solar powered, autonomous and unmanned crossing of the atlantic. This paper investigates the difference between open water performance of hubtype and hubless rdt by means of computational fluid dynamics cfd analysis.
Compared with conventional shaft driven thruster, a rim driven thruster has many advantages as follows. The propeller was designed by means of direct blade pitch optimization method. The impact from the spread of the virus and the general restrictions implemented by authorities all over the world are heavily affecting all of us, both in private and in our daily business. Us8299669b2 rim driven thruster having transverse flux. This paper presents the results of a design and experimental verification of rimdriven thruster blading system. The strength analysis of blading system under design was carried out and cavitation characteristics were estimated. Diskdrive thruster technology hydromea subsea propulsion. Numerical modelling of rotorstator interaction in rim driven. A rim driven thruster comprises an annular housing, a propulsor assembly, a magnetic rotor assembly and a transverse flux stator assembly. Selection of local servers or cloud compute nodes amazon microsoft azure cloud. Laminations for underwater rimdriven thrusters by shu hau lai rim or tip driven thrusters with structurally integrated brushless pm motors are now an established technology with an increasing range of applications. One key area of interest is the potential impact of rdps on hydrodynamic efficiency. Flow visualisation of the oscillating flow past the front stators in a rim driven thruster.
You need to be registered and signed in to view this content. Prediction of loading distribution and hydrodynamic. Figure 1 shows an inverter fed rim driven marine thruster. Schottel answers these needs with its ecofriendly electric rim driven thrusters in four sizes. Conventional propellers need a shaft line which is driven by a turbine, a diesel engine or an electric motor. A rimdriven thruster integrates the propeller with the electrical machine that is driving it by mounting the motor directly around the outside of the propeller. This is from my phd work, supported in no small part. Figure 1 shows an inverter fed rimdriven marine thruster. Pdf performance analysis rim driven propeller as a propulsor. Design of a dual rotor axial rim motor for electric aircraft. These marine thrusters integrate the electric motor into the duct around the propeller, resulting in an optimally efficient combination of hightorque motor and fully symmetric thrust. The blades of a rimdriven thruster are mounted on a ring, which constitutes the rotor of an electric motor. Rim driven retractable thruster design 6 propeller testing rig 7 7 blade element theory airfoil evaluation 8 8 actual and theoretical prop thrust production 11 9 graupner hub driven propeller12 10 thrust production and power consumption of a graupner hub driven propeller 11 large blade rim driven. There are only propeller blades in the water path and only electric cables go through the hull.
The optimization framework consists of a parametric description of the rim blade geometry and a multiobjective optimization algorithm which makes. The rim driven thrusters rdt have been designed both in hubtype and hubless type, but few comparison studies have been performed. The strength analysis of blading system under design was carried out and cavitation. University of southampton research repository eprints soton.
Nov 16, 2005 just found this pdf, design of an integrated 100kw permanent magnet synchronous machine in a prototype thruster for ship an alternative solution is a rim driven thruster where the shaft and gear has been removed. Silentdynamics customized rimthrusterbased propulsion solutions applications include tunnel thrusters, and silentdynamics ert thrusters can be configured to be retractable andor azimuthing. Design and optimization of a hubless rimdriven thruster for an. The electrical rim driven thruster consist of an electric torque motor, which drives an inside propeller. Starting from a baseline design an overall improvement of speed from 1. This configuration allows very efficient, along with the special power electronics precisely controllable relapses, at a very high efficiency. The annular housing defines a flow path extending along an axis. Automatic evaluation simulation report as pdf report. Pdf numerical design and experimental verification of a rim.
Rimdriven retractable thruster design 6 propeller testing rig 7 7 blade element theory airfoil evaluation 8 8 actual and theoretical prop thrust production 11 9 graupner hub driven propeller12 10 thrust production and power consumption of a graupner hub driven propeller 11 large blade rim driven. Blade camber was set to zero for symmetric port and starboard thruster performance. Building a rimdrive thruster system that offers the ultimate in comfort without compromise in performance is our driving motivation. Schottel answers these needs with its ecofriendly electric rimdriven thrusters in four sizes. Interestingly it appears as though the relatively new permanent magnet electric motor technology has driven this new interest in rim drive propulsion. Depending on the field of application and size, the thrusters offer. Libas was the first trawlerpurse seiner in the world to be equipped with a brunvoll retractable combi azimuth tunnel thruster of 1470kw forward.
Pdf numerical design of a rimdriven thruster using a rans. Simulationdriven design of a rim drive for an autonomous vehicle. Rimdriven permanent magnet motor propulsor rdp a new type of drive developed by general dynamics electric boat of groton, usa. These marine thrusters integrate the electric motor into the duct around the propeller, resulting in an optimally efficient combination of hightorque motor and fully. Depending on the field of application and size, the thrusters offer a rated power of 200 800 kw and a variable number of blades. Design of supplementary thrusting unit for a miniature. Integratedthrusters originally researched at the university of southampton, england, have been developed into robust products ranging from 50mm propellers to 300mm 250kgf thrust workhorses. The stator is directly fixed to the ships tunnel structure and houses the windings of the electric motor. Flow past stators in a rim driven thruster youtube. The rim driven thruster is a marine propeller which does not need a hub for transmission of the driving torque.
Tunnel shape, dimensions, position required side force noise and vibration aspects this method will be delivered in the form of easytoapply software that is similar to what has been developed for the wageningen cdseries jip. We have single and multichannel controllers suitable for battery operation of the smaller units. The proof of concept version of the code is for the design of an axial flux rim driven propulsion system. Electric rim thruster technology the basic unit of the ert electric rim thruster is an permanent magnetic synchronous ring motor pmsm which is stepless controllable by a frequency converter. A rim driven thruster integrates the propeller with the electrical machine that is driving it by mounting the motor directly around the outside of the propeller.
This drive is more compact and has several features that differ significantly from other pods available today. Reduced noise and vibration, high efficiency as well as savings in space and weight are important thruster requirements. Numerical design and experimental verification of a rim driven thruster alexey yu. Pdf on jun 10, 2018, qingming cao and others published rim driven thruster find, read and cite all the research you need on researchgate. Brunvoll rim driven thruster saves space and energy, offering higher propeller efficiency and lower environmental impact with exceptionally low noise. Simulation setup openfoam environment in the background. Just found this pdf, design of an integrated 100kw permanent magnet synchronous machine in a prototype thruster for ship an alternative solution is a rim driven thruster where the shaft and gear has been removed. This level of benefit is also reflected in the information published by rollsroyce on its rimdriven thruster technology. Numerical design and experimental verification of a rim. China claims rimdriven thrusters will make its new. The structure is enhanced by use of buoyant solid materials so weight in water is very low. Rim driven thruster, auv, free surface, waves 1 introduction flight style autonomous underwater vehicles auvs, such as the remus 100 and autosub6000, are ideally suited to performing high speed missions 1ms, requiring the vehicle to survey large areas of the seabed mcphail et al 2010. Within this thesis a hubless rimdriven thruster for an autonomous surface vehicle asv shall be designed and optimized using ranse simulations.
The strength analysis of blading system under design was carried out and cavitation characteristics. China claims rimdriven thrusters will make its new nuclear. Thrusters with rimdriven propellers have been known. Frontend workbench for configuration of the simulation. Deepsea tidal generator and positioning thruster 1. It combines the advantages of the vit with those of an azimuthing steerable propulsion system and can be used, for example, as a maneuvering aid for dynamic positioning or as. Bow thrusters make docking easier, since they allow the captain to turn the vessel to port or starboard side, without using the main propulsion mechanism which requires some forward motion for. The thruster will easily navigate through floating debris such as pieces of water plants or ropes. Rimdriven thruster technology has emerged and demonstrated potential for compact and supersilent maneuvering propulsion. Due to the fact that the rim driven propeller has a low tip speed of the propeller blades the noise emission from the propeller is significant lower than a normal propeller.
The motor of the conventional pods is encased within a pod hence the name on the same shaft as the. This paper investigates the difference between open water performance of hubtype and hubless rdt by means of. Rim driven thruster how is rim driven thruster abbreviated. Petersburg, russia abstract this paper presents the results of a design and experimental verification of rim driven thruster blading system. Depending on the field of application and size, the thrusters offer a rated power of 200 800 kw and. Direct online rimdriven electric machines research explorer. A simulationbased design optimization sbdo tool is proposed for the design of rim driven thrusters. Numerical design and experimental verification of a rimdriven. Nov 16, 2005 found this pdf, design of an integrated 100kw permanent magnet synchronous machine in a prototype thruster for ship an alternative solution is a rim driven thruster where the shaft and gear has been removed. This configuration allows very efficient along with the special power electronics precisely controllable relapses at a very high efficiency. Pdf numerical design of a rimdriven thruster using a. This level of benefit is also reflected in the information published by rollsroyce on its rim driven thruster technology. Marinich 1 1krylov shipbuilding research institute ksri, st.
Computational fluid dynamics simulation of a rim driven thruster. Rim drive thruster a revolutionary compact lateral thruster developed by two partnerships. Interestingly it appears as though the relatively new permanent magnet electric motor technology has driven this new interest in rimdrive propulsion. The rdt concept creates exciting potential for both. The optimization was based on a surrogate model and performed for. Pdf the shaftless rimdriven thruster rdt has become an attractive ship propulsion device in the marine industry in recent years, as it can. The performance of vertical tunnel thrusters on an autonomous. A rimdriven thruster is a marine propeller that doesnt need a hub for transmission of the driving torque. Rim driven thruster technology has emerged and demonstrated potential for compact and supersilent maneuvering propulsion. In many ways, rim driven thrusters are hydrodynamically similar to ducted propellers but with a major di erence. Numerical design of a rimdriven thruster using a ransbased. Simulationdriven design of a rim drive for an autonomous. In these thrusters, the stator of the motor is housed within the thruster duct, and. Safety and the wellbeing of our employees and customers has high focus at brunvoll.
This paper presents the results of a design and experimental verification of rim driven thruster blading system. Pdf performance analysis rim driven propeller as a. This design is mainly used on cruise liners, super yachts, passenger ships. The electrical rim driven thruster consist of an electric torque motor which drives an inside propeller. Rimdriven thruster, auv, free surface, waves 1 introduction flight style autonomous underwater vehicles auvs, such as the remus 100 and autosub6000, are ideally suited to performing high speed missions 1ms, requiring the vehicle to survey large areas of the seabed mcphail et al 2010. Computational fluid dynamics simulation of a rim driven thruster aleksander j dubas, n. Copenhagen subsea as is a newly created company with the purpose of bringing a range of innovative products to the subsea industry. Rim driven thruster design combined with resilient mounting provides the ultimate solution in noise reduction and low vibration the brunvoll lownoise tunnel thruster design, resiliently mounted with full length double tunnel, results in a noise reduction of 11 to 15 dba. Rim driven thrusters represent a valid alternative to ducted propellers. Pdf numerical design and experimental verification of a. Diskdrive is an ultraslim 15 mm thickness rimdriven brushless thruster with and without integrated motor control. The propulsor assembly is supported within the housing and comprises propeller blades extending radially from the axis of the flow path. The task is derived from the axatlantic project, aiming at a solar powered, autonomous and unmanned crossing of. In addition to the application as a transverse thruster, voith also offers the system as the voith inline propulsor vip, a swingout system that can pivot 360 degrees.