69results about "Steering by jets" patented technology

A system and method for enhancing marine vessel efficiency through integrated hull optimizations is disclosed. The system includes automated bow thruster covers that reduce hull drag and condition water flow, coupled with strategically positioned air lubrication nozzles that create and maintain an air layer under the vessel. The bow thruster covers may be configured as circular doors or parallel panels, optionally incorporating air discharge ports or working in conjunction with dedicated air jets. An intelligent control system optimizes the integrated components using real-time sensor data and computational fluid dynamic analysis. The system modulates air distribution and cover positions based on sea conditions and vessel speed, maintaining optimal efficiency during operation. External surfaces may incorporate superaerophilic structures to enhance air retention and reduce drag. The comprehensive integration of these components provides improved hydrodynamic efficiency while maintaining full bow thruster functionality when required.

The shaftless propeller comprises a motor shell, a rotating cylinder, the hub-free guide vane, a steering nozzle and a sealed bearing assembly, the motor shell coaxially sleeves the rotating cylinder, an annular motor used for driving the rotating cylinder to rotate is arranged between the motor shell and the rotating cylinder, and the hub-free guide vane is arranged between the motor shell and the rotating cylinder. The rotating cylinder comprises a plurality of blades arranged on the inner wall of the rotating cylinder and a distance adjusting mechanism used for changing the pitch of the blades in the operation process, and the hub-free guide vane is fixedly arranged at a water inlet in the front end of the rotating cylinder and used for conducting pre-rotation rectification on water flow entering the rotating cylinder so as to counteract the circumferential induced speed generated by the rotating cylinder. The steering nozzle is arranged at the outlet end of the rotating cylinder and can be driven to deflect around the axis so as to change the jet flow direction, and the sealing bearing assembly is arranged between the motor shell and the rotating cylinder and used for supporting the rotating cylinder and preventing fluid from invading the interior of the motor shell; the propulsion efficiency can be improved, the vibration noise can be reduced, and the steering function can be integrated.

The invention discloses a hardened channel algae biofilm removing system based on high-pressure jet flow and an intelligent control method. The system comprises an unmanned catamaran, a high-pressure jet generating device, an intelligent sensing module and an embedded central controller module. The unmanned catamaran is a system carrier, the high-pressure jet flow generating device achieves targeted removal of the algae biological membrane through self-adaptive jet flow, and the intelligent sensing module comprises a multispectral imager for recognizing the distribution characteristics of the biological membrane in real time and a laser distance measuring sensor for obtaining the distance between the removal system and the algae biological membrane. The embedded central controller module is a fuzzy PID algorithm for dynamically adjusting jet parameters and the motion trail of the mechanical arm and an artificial intelligence algorithm for optimizing the operation cycle based on historical data. The system adopts a full-automatic intelligent working mode, and integrates technologies of intelligent sensing, a self-adaptive cleaning mode, a water-saving algorithm, automatic nest-returning charging and the like. The system is easy and convenient to operate and low in running cost, the clearing efficiency reaches 92% or above, water is saved by 30% or above, and the system is an efficient and applicable technology for guaranteeing stable water quality and safe water delivery of the long-distance water delivery trunk canal.

The invention belongs to the technical field of rudders, and particularly relates to a ship side high-performance rudder which comprises a rudder body, a blowing and spraying cabin is arranged in the rudder body, a propeller control assembly is installed on the side of the blowing and spraying cabin, the other side of the propeller control assembly is meshed with a gear control assembly, and an inner and outer rod control assembly is arranged in the gear control assembly. One end of the inner and outer rod control assembly is connected with a gear transmission assembly, a differential mechanism is installed at one end of the gear transmission assembly, and a blowing flow guide assembly is arranged in the blowing cabin. The propeller control assembly comprises a thin shaft, a small straight gear, a small bevel gear and a propeller shaft, the outer wall of the thin shaft is fixedly connected with the small straight gear, and the small bevel gear is arranged on the side of the small straight gear; rudder angles around the ship body can be controlled, so that flow fields at different positions on the ship side are controlled, the ship type performance is improved, meanwhile, the flow fields on the ship side are further adjusted through the blowing and spraying device, and the steering effect is improved.

A jet propulsion boat includes: a boat body; a propulsion device that imparts propulsion force to the boat body to propel the boat body; an engine and an electric motor that drive the propulsion device; and a control device that determines which of an engine mode and an electric mode is to be used as an operation mode of driving the propulsion device in accordance with a condition, the engine mode configured to drive the propulsion device with the engine and the electric mode configured to drive the propulsion device with the electric motor while stopping the engine, and controls the engine and the electric motor to drive the propulsion device in the determined operation mode.

A thruster system for a marine vessel includes an electric motor having an output shaft. The thruster system also includes a housing having a first housing opening and a second housing opening, the first housing opening defining a water intake, the second housing opening defining a water discharge. The thruster system further includes a rotatable member operatively coupled to, and driven by, the output shaft of the electric motor, wherein rotation of the rotatable member results in water brought into the housing through the first housing opening and expelled through the second housing opening to generate a thrust force in a direction that is greater than 45 degrees relative to a propeller direction of the marine vessel.

A monolithic attitude control motor frame includes a monolithic structure including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. Adjacent cavities of the plurality of cavities share a side wall or side wall portion therebetween. Each of the cavities is configured to receive an attitude control motor. A monolithic attitude control motor system includes a monolithic frame including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. The system further includes a plurality of attitude control motors corresponding to the plurality of cavities, such that an attitude control motor of the plurality of attitude control motors is disposed in each cavity of the plurality of cavities.

The present invention provides a ship handling system and a ship equipped with it, which allows users to easily utilize the functions of the ship, particularly the ship handling support mode. [Solution] The ship handling system 30 includes controls, actuators (10, 20) for the navigation of the ship 1, and an ECU 31 as a controller that controls the actuators according to the operating state of the controls. The ECU has a plurality of ship handling support modes. The ship handling system includes a suggestion notification device (40) that notifies the user of a suggestion to execute an appropriate ship handling support mode when predetermined suggestion conditions are met. The ship handling system includes a command input device (43u) operated by the user to command whether or not to execute a ship handling support mode suggested by the suggestion notification device. When the execution of a suggested ship handling support mode is commanded, the ECU controls the actuators according to that ship handling support mode.

A watercraft propulsion system includes a bow thruster, at least two propulsion devices, a translation / bow turning operator to apply a translation command to translate a hull and a bow turning command to turn a bow of the hull, and a controller configured or programmed to drive the bow thruster, and drive one of the at least two propulsion devices forward and another of the at least two propulsion devices in reverse while controlling the steering angles of the at least two propulsion devices so that propulsive force action lines of the at least two propulsion devices cross each other in the hull in a translation watercraft maneuvering mode to translate the hull in response to an operation of the translation / bow turning operator. The controller includes a calibration mode in which calibration is performed for the translation watercraft maneuvering mode.

A system for controlling a watercraft includes a bow thruster, an outboard motor being an only outboard motor attached to the watercraft, and a controller. The bow thruster includes a port oriented in an obliquely forward direction of the watercraft to jet a stream of water in the obliquely forward direction of the watercraft. The outboard motor is attached to the watercraft to be steered right and left. The controller is configured or programmed to control the outboard motor and the bow thruster to cause the watercraft to move sideways by a net force of a first thrust generated by the bow thruster and a second thrust generated by the outboard motor.

Governing method of a vessel comprising at least one bow thruster, provided in the area of bow of the vessel and a single steerable engine and / or an engine with fixed axis and with at least one rudder. The method provides a maneuver of transversal translation so-called drift with activation of the bow thruster with a pre-established number of revolutions and a pre-established direction of rotation and simultaneously the activation of said one engine with a pre-established number of revolutions and a pre-established setting of forward gear or reverse gear. The engine and / or the rudder are steered alternately in one direction and in the opposite direction with respect to the longitudinal axis of the vessel with a pre-established steering angle and / or the gear direction, that is the gear direction set on the engine is alternately inverted between forward gear and reverse gear, the duration of each steering position of the engine and / or of the rudder respectively in said first direction and in said second direction and / or of said setting of gear of the engine in forward gear or in reverse gear or the frequency of switching between the two steering directions and / or the two gear directions, being in the order of magnitude of the duration between setting of the steering direction and / or of the gear and corresponding actual displacement of the vessel caused by the thrust of the engine in the corresponding steering direction and / or in the corresponding gear condition and due to the inertia of motion of the vessel.

The application relates to the field of motorboat technology, in particular to a motorboat which comprises a boat body, a nozzle, a rotating part and a connecting assembly; the nozzle is rotationally connected to the tail of the boat body, and the nozzle sprays water outward through the propeller inside the boat body; the rotating part is connected to the front part of the boat body, the rotating part comprises a handle and a steering control part connected with the handle, the steering control part is connected with the connecting assembly and controls the rotation of the nozzle relative to the boat body through the connecting assembly. The motorboat of the application controls the steering of the nozzle through the handle, thereby realizing the steering of the motorboat, and the operation is simple, the cost is low, the safety is high, manual operation does not need energy consumption, and the endurance of the motorboat is increased.

A method for adaptive dynamic positioning of a vessel during offshore charging from a power station, actively assisted by a cable management system, the method comprising the steps of: (i) establishing a control link between said cable management system, configured to control at least one characteristic parameter of a charging cable connected between the power station and the vessel, and a positioning control system, configured to control a propulsion system of the vessel so as to move the vessel relative to the power station; (ii) defining, relative to the power station and based on said at least one characteristic parameter of said charging cable, a first target zone, adapted to effect vessel movement (response) of a first type, and at least one second target zone containing said first target zone, adapted to effect vessel movement of at least one second type; (iii) monitoring any one of said at least one characteristic parameter of said charging cable, at least one performance parameter of said propulsion system, a vessel position and / or a vessel heading) relative to the power station, and at least one environmental parameter; (iv) selectively modifying said first target zone and / or said at least one second target zone in response to a predetermined change of any one of said at least one characteristic parameter of said charging cable, at least one performance parameter of said propulsion system, said vessel position relative to the power station, and said at least one environmental parameter; (v) controlling said positioning control system and said cable management system, so as to maintain the vessel within or move the vessel back towards said first target zone in accordance with said vessel movement of a first type and said vessel movement of a second type, respectively.

A jet propulsion boat includes a boat body; a main propulsion device including a jet device that jets a jet water stream from the boat body, and a direction change device that changes, in a lateral direction, an orientation of the jet water stream having been jetted; an auxiliary propulsion device provided on the boat body to impart a propulsion force in a lateral direction to the boat body; and a control device that controls the main propulsion device and the auxiliary propulsion device, and switches a control mode of the main propulsion device and the auxiliary propulsion device between a plurality of modes, in which the control mode includes a main control mode for driving the main propulsion device and stopping the auxiliary propulsion device to move the boat body, and a combined mode for driving both the main propulsion device and the auxiliary propulsion device to move the boat body.

The present invention provides a jet propulsion system, a jet-propelled boat, and a boat hull launching method that enable easy launching of the boat hull from a trailer. [Solution] This jet propulsion system 100 includes a jet propulsion mechanism 4 that generates thrust by ejecting a jet of water from the nozzle 44a, which is located at the stern 114 of the hull 110 and includes a nozzle 44 provided with a jet water nozzle 44a, a nozzle actuator 5a that rotates the nozzle 44 to change the direction of the jet water from the nozzle 44a, and a control unit 8 that performs oscillation control by repeatedly oscillating the nozzle 44 using the nozzle actuator 5a when lowering the hull 110 from the trailer T.

The present invention provides a jet-powered boat, a jet-powered boat control system, and a method for maintaining the docked state of a jet-powered boat, which enable the boat operator to maintain the docked state of the boat at a pier even when the boat operator is located away from the hull. [Solution] This jet-propelled boat 100 includes a control unit 40 that performs docking maintenance control, which controls the water flow direction adjustment unit 30 so that the direction of the jet water flow generated from the water flow generation unit 20 is maintained in a state that presses the hull 10 against the pier 201 when a docking maintenance operation is performed to maintain the hull 10 docked against the pier 201, while also controlling the water flow generation unit 20 to maintain the state in which a jet water flow is generated from the water flow generation unit 20.

Wakeboats that include an aquatic invasive species control apparatus are provided. These wakeboats can include: a wakeboat with a hull; at least one throughhull fitting in the hull of the wakeboat; an irradiation chamber in fluid communication with the at least one throughhull fitting, the irradiation chamber having a radiation source; and at least one water destination aboard the wakeboat. Methods for irradiating invasive aquatic species aboard a wakeboat are also provided. The methods can include: receiving water from outside the wakeboat hull; and irradiating water aboard the wakeboat prior to discharging the water.

The invention discloses a floating eagle type wave power generation device adopting hybrid power positioning and a control method, and belongs to the technical field of renewable energy utilization. The device comprises a main body, a turret-type single-point mooring system and an auxiliary power positioning system, wherein the main body comprises a semi-submersible platform, an eagle-type wave-absorbing floater connected with the platform through a hinge and an energy conversion system; the mooring system is arranged on a platform bow, and the auxiliary system comprises a propeller at the bottom of a platform stern stand column. According to the control method, the target heading is determined through the sensor collecting position, heading and wave direction, the mooring system is preliminarily positioned by means of the weather vane effect, the auxiliary system is controlled through a low-frequency motion model, an LQR controller, thrust distribution optimization and double-loop PID, the heading is accurately adjusted, drifting is restrained, and low-power-consumption operation is conducted when deviation is small.

The application discloses a high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control method and an implementation device, and belongs to the field of high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control. The application comprises a stabilizing device, a power driving device, a real-time monitoring module and a hydrodynamic force optimization control module. The stabilizing module comprises a vector water jet propeller for active stabilizing and an appendage for passive stabilizing. The vector water jet propeller is installed at the stern of the ship, can be actively adjusted in multi-angle rotation to form a control surface. The appendage is installed on both sides of the ship body and connected with the ship body through two mutually parallel electric connecting rods. The bottom of the electric connecting rod is connected with the ship body through a multi-angle rotating base. The crank is electrically driven by the hydrodynamic force optimization control module and moves in different directions to drive the connecting rod and the appendage to move horizontally and longitudinally. The sensor and the gyroscope installed on the ship body can obtain the ship body posture, the appendage position and the sea state information in real time. The monitoring data is brought into the hydrodynamic force optimization control system to obtain the optimal solution of the appendage position, and the high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control is realized according to the optimal solution of the appendage position.

The invention discloses an underwater vector type shaftless pump jet propeller, and belongs to the technical field of underwater propellers. The propeller comprises a propeller body, a flow dividing device, a vector control device and a control unit. A plurality of main spraying pipes distributed in the circumferential direction are arranged in the propeller body, and the flow dividing devices are arranged corresponding to the main spraying pipes and used for guiding part of water flow to be sprayed out in the non-axial direction through curve type flow dividing pipelines to generate lateral thrust. The vector control device drives a flow control component arranged at an inlet of the flow dividing pipeline through linear motion so as to control on-off of water flow. The control unit cooperatively controls the vector control devices according to the target steering instruction and the real-time navigational speed, the corresponding flow control components are accurately adjusted, vector synthesis is conducted on lateral thrust in the space, and therefore the steering torque in the target direction is generated. According to the invention, shunting regulation and control are carried out at a thrust generation source, the response speed is high, the efficiency is high, the structure is compact, and the maneuverability and maneuverability of the underwater vehicle are obviously improved.

A watercraft propulsion system includes a bow thruster to generate a lateral propulsive force, a propulsion device on a stern of a hull and having a variable steering angle, and a controller configured or programmed to control the bow thruster and the propulsion device to perform a fixed point holding control to maintain a position and an azimuth of the hull. The fixed point holding control includes a translation mode in which the hull position is maintained by controlling the propulsive force of the propulsion device with the steering angle set to a translation mode steering angle and the hull azimuth is adjusted by controlling the propulsive force of the bow thruster, and a bow turning mode in which the hull azimuth is adjusted by controlling the propulsive forces of the bow thruster and the propulsion device with the steering angle set to a bow turning mode steering angle.

Method for governing a vessel comprising at least one bow-thruster and / or one stern-thruster respectively in correspondence with the bow area and with the stern area, and two engines steerable independently from each other. The method provides the activation of the bow-thruster and / or of the stern-thruster with a predetermined number of revolutions and a predetermined rotation direction of the propeller, that is, a predetermined direction of the flow generated by said bow-thruster and / or said stern-thruster, and simultaneously the activation of said engines in combination, with a predetermined number of revolutions and a predetermined setting of forward or reverse gear for each of said two engines, while said engines are steered each independently from the other in a steering direction with respect to the longitudinal axis of the vessel and with a predetermined steering angle, one or more or all of the following settings being selected as follows: the steering angles of said two engines being identical and / or different from each other; the gear direction and / or the neutral condition being identical or different from each other; the number of revolutions being identical or different from each other; said settings being applied in combination of only two or of all of said settings with a synchronization function as a function of the movement of the vessel generated by the propulsion vector resulting from the sum of the individual propulsion forces acting on a centre of application of said forces defined for said vessel.

According to some embodiments of the present disclosure, a low-profile cargo vessel includes a cargo bed that is open to the stern, an engine compartment forward of the cargo bed, a fairing, and buoyancy volume. The cargo bed includes a cargo bed floor and first and second cargo bed walls on opposite sides of cargo bed floor. The cargo bed, interior portions of the first and second cargo bed walls, and interior portions of cargo bed floor are free-flooding to sea water. The fairing is configured to provide a hydrodynamic bow structure ahead of the engine compartment. The buoyancy volume is inside upper portions of the first and second cargo bed walls spaced apart from cargo bed floor so that the low-profile cargo vessel floats with a waterline above the cargo bed floor and more than half way up the first and second cargo bed walls.

A transverse propulsion device (1) for a vessel (2) includes a propulsion channel (3) defined in a hull (4) of the vessel (2) and adapted to accommodate at least one motorized propeller (5); the propulsion channel (3) is defined by a channel wall (6) extending between a first channel inlet (7) and an opposing second channel inlet (8); at least one coupling (9) extending from the channel wall (6) at at least one channel inlet (7, 8); at least one support structure (10) including at least one mating coupling (27); the support structure (10) being detachably connected to the at least one coupling via its at least one mating coupling (27). The transverse propulsion device (1) further includes at least two closing doors (12) configured such that when the closing doors are in the closed position, at least one passage entrance (7, 8) is completely closed; wherein at least one support structure (10) includes a hinge (11); and wherein the at least two closing doors (12) are rotatably hinged to the hinge (11) of the support structure (10) such that when the at least one mating connector (27) of the support structure (10) is separated from the at least one connector (9), the closing door (12) is separated from the motor passage (3) together with the support structure (10), thereby allowing access to the motor passage (3).

The shaftless propeller comprises a motor shell, a rotating cylinder, the hub-free guide vane, a steering nozzle and a sealed bearing assembly, the motor shell coaxially sleeves the rotating cylinder, an annular motor used for driving the rotating cylinder to rotate is arranged between the motor shell and the rotating cylinder, and the hub-free guide vane is arranged on the rotating cylinder. The rotating cylinder comprises a plurality of blades arranged on the inner wall of the rotating cylinder and a distance adjusting mechanism used for changing the pitch of the blades in the running process, the hub-free guide vane is fixedly arranged at the rear end of the rotating cylinder and used for rectifying water flow output by the rotating cylinder, and the steering nozzle is arranged at the outlet end of the hub-free guide vane and used for spraying water to the rotating cylinder. The sealing bearing assembly is arranged between the motor shell and the rotating cylinder body and used for supporting the rotating cylinder body and preventing fluid from invading the interior of the motor shell. The propeller pitch can be adjusted in real time, steering control is integrated, high sealing performance and reliability are achieved, and therefore the ship propulsion performance is comprehensively improved.

A ship launching support system configured to support launching work of a ship of disengaging the ship from a trailer on which the ship is loaded, the ship including an actuator having a function of generating propulsion power of the ship and a function of generating a moment on the ship, and a ship control device configured to actuate the actuator, during the launching work of the ship, the ship control device causing the actuator to generate backward propulsion power of the ship, and executing feedback control of a bow azimuth of the ship on the basis of a deviation between an actual bow azimuth that is a bow azimuth of the ship in actuality and a target bow azimuth.

The invention relates to a bow thruster for recreational boats, consisting of a support structure which, for support in the bow area of ​​the keel, is equipped with support elements at suitable intervals above and below a commonly present towing eye (also called a U-bolt), and which carries a jet drive in the underwater area, which acts transversely to the longitudinal axis of the boat. This bow thruster is attached to the towing eye of the boat by means of a central mounting when required and is sufficiently braced against the bow of the boat by means of the support elements to absorb the transverse forces of the jet drive. The electrical supply for this bow thruster is provided either exclusively via the boat's electrical network and / or via an additional power supply, e.g., a separate accumulator, a so-called battery pack. The control or activation of this bow thruster by a suitable control element is done via a hard-wired control line and / or wirelessly via radio or a digital short-range transmission.

A steering system for a watercraft having twin propulsion units whose thrust axes are fixed to diverge outward from a longitudinal centerline in plan view. During a turn, a controller differentially commands thrust such that the outboard propulsion unit produces greater thrust than the inboard unit. The outward alignment of the thrust axes yields a net lateral force whose vertical offset from the craft's center of gravity produces a rolling moment that banks the hull inward toward the turn. The system enables banked turns without swiveling drives or rudders and supports zero-radius maneuvers at low speeds. Embodiments include electric propeller pods or water-jet nozzles, planing and hydrofoil craft, and optional feedback to regulate bank angle.

A steering mechanism for a container carrier ship hull including a bow, a stern, and a container bay therebetween. The bow is provided with a set of depending lateral thruster pods, the set including a first pod disposed along a longitudinal centerline of the hull, a second pod disposed rearward of the first pod and outward from the centerline, and a third pod disposed rearward of the first pod and outward from the centerline opposite from the second pod. The first and second pods define a first longitudinal flow channel to one side of the centerline and the first and third thruster pods define a second longitudinal flow channel to the opposite side of the centerline. A fourth pod, which may omit thruster mechanisms, may be disposed along the centerline reward of the first, second, and third pods, to define with them first and second cross-centerline flow channels.

A watercraft includes a first propulsion unit and a second propulsion unit that can be rotated to a normal operating mode orientation in which they each have normal mode toe angles, and to at least one a wake wave generating orientation wherein the first propulsion unit has a first propulsion unit wake wave generating mode toe angle and the second propulsion unit has a second propulsion unit wake wave generating mode toe angle greater than the normal mode toe angles. In the wake wave generating orientation, a wash of the at least one of the first propulsion unit and the second propulsion unit is less disruptive of at least one of a peak wave and a diverging wake wave of a wake of the watercraft in the wake wave generating mode than in the normal operating mode.