87results about "Steering by extensible flaps" patented technology

The invention relates to an arrangement and a method for dynamic control of the movements and course of a high-speed vessel hull (100). The arrangement (101) comprises propulsion members (102, 102') and at least one flap member (104, 104', 104'', 104'''). In this connection, the flap member is arranged so as to be capable of being brought adjustably at an angle (105) in relation to a water flow (106) relative to an aft side surface (107) of the vessel hull (100) in order in this connection to generate force components (108, 109) which act on said vessel hull (100) and on a front side (110) of the flap member (104), the flap member (104) being arranged so that the force components (108, 109) generated are directed on the one hand towards the aft side surface (107) of the vessel hull and on the other hand towards the front side (110) of the flap member (104) in the water flow (106) relative to the aft side surface (107) so as in this way to be capable of bringing about a change in the movements and/or course of the vessel hull (100). The invention is particular intended for manoeuvring vessel hulls of high-speed vessels of the type which are provided with water-jet drive, that is to say vessels with a water-free stem while in motion, but can also be applied to other types of high-speed vessels.

A method for controlling the movement of a marine vessel comprises steps that rotate two marine propulsion devices about their respective axes in order to increase the hydrodynamic resistance of the marine propulsion devices as they move through the water with the marine vessel. This increased resistance exerts a braking thrust on the marine vessel. Various techniques and procedures can be used to determine the absolute magnitudes of the angular magnitudes by which the marine propulsion devices are rotated.

Methods and arrangements to redirect a forward thrust generated by a propeller of a watercraft to provide a non-forward thrust are disclosed. More specifically, embodiments comprise a control surface to redirect the forward thrust from the propeller. Based upon a position (i.e., distance and orientation) of the control surface with respect to the propeller, the redirection generates the non-forward thrust or thrusts. By redirecting a component of the forward thrust back toward the bow, the net forward or reverse, port or starboard thrusts and rotational thrust can be adjusted in fine increments. For instance, by adjusting the amount of prop wash hitting the control surface, the magnitude of the redirected thrust from the control surface can be adjusted. Further, adjusting the angle of the control surfaces adjusts the direction as well as magnitude of a reverse thrust component. The net thrust can be in any direction and rotational.

A braking system for a personal watercraft includes at least one brake plate for mounting to the transom of a personal watercraft such that the jet nozzle of the watercraft is directionally adjustable independently of the braking system. The brake plate is alternatable between a nonbraking condition wherein the plate is retracted against the transom and is held completely above a lower edge of the transom, and a braking condition where the brake plate extends beyond the lower edge of the transom. A hand-controlled actuator assembly selectively alternates the brake plate between the braking and nonbraking conditions.

A submersible vessel comprising:

• • an elongated hull;
  • at least one propeller mounted on a forward end of said hull and adapted to move said hull through water;
  • said at least one propeller being of a size and configuration such that when it is rotated at an appropriate speed, it generates supercavitated water flowing from said at least one propeller and thence along an outer surface of said hull so as to diminish friction on the outer surface of said hull and facilitate high underwater speeds.

The present invention discloses a boat motor trolling attachment for use in conjunction with a boat motor and propeller to achieve effective trolling speeds. The boat motor trolling attachment includes a frame, defining an opening, and attached to a mounting bracket which is secured to the boat motor. Two springs are attached between the frame and the mounting bracket so as to bias the frame into a trolling position wherein the frame is disposed in a plane perpendicular to an axis defined by the propeller. Four control members are disposed horizontally across the opening and rotatably fixed to the frame so that a outflow of water impinging on the control members when the boat motor is in a forward gear automatically causes the control members to rotate in the frame so as to substantially close off the opening and form a continuous surface. The outflow of water generated by the propeller acts on the continuous surface and is transmitted thereby to the boat so as to resist forward motion of the boat. When the boat motor is in a reverse gear, the control members automatically rotate to allow a inflow of water to be generated by the propeller thereby facilitating control and maneuverability of the boat in reverse. At high forward speeds, the outflow of water generated by the propeller overcomes the bias imposed on the frame by the springs and automatically moves the frame to an inoperative position wherein the frame is disposed in a plane substantially parallel to the axis defined by the propeller.

A water craft comprising:

• • an elongated hull comprising a passageway having an inlet and an outlet;
  • a pump jet disposed within said passageway intermediate said inlet and said outlet;
  • said pump jet being configured to receive water entering said passageway through said inlet and pump said water out of said outlet, whereby to propel said hull through water;
  • a plurality of nozzles disposed on the outer surface of said hull, aft of said inlet, wherein said plurality of nozzles are configured to release a friction-reducing fluid, whereby the friction-reducing fluid displaces water from the surface of said hull so as to diminish friction on the outer surface of said hull and facilitate high speeds.

A controllable fin surface configuration positionable on the underwater surface of a craft having a bow and a stern, the craft having a direction of travel defined from the stern to the bow, the configuration comprising: at least one hinge adapted to mechanically support the fin surface configuration; and at least one fin surface mechanically attached to the hinge and having a range of motion definable from a closed state to an open state; wherein the closed state is defined by the fin surface configuration offering minimal resistance to relative water movement opposing the direction of travel and the open state is defined by the fin surface configuration offering maximum resistance to relative water movement in the direction of travel.

A personal watercraft includes a floatation member, a thrust assembly, a steering assembly, and a braking assembly. The assemblies may be actuated either mechanically or electrically. The thrust assembly is human powered, solar powered, or electric powered. The thrust, steering, and braking assemblies can be added after-market to an existing stand-up paddle board (SUP), or built into one or a plurality of SUPs during initial manufacturing. When the thrust assembly is human powered, it is leg or arm powered. When the thrust assembly is leg powered, the legs can move backward and forward in a sliding motion, up and down in a stomping fashion, or move in a loop trajectory. When the thrust assembly is arm powered, the arms can move forward/backward together or separately. The thrust assembly includes one or a plurality of paddles or flippers that are positioned to the side or under the SUP.

The invention relates to the technical field of water body robots and discloses an auxiliary brake device for a water body robot and a using method. According to the technical scheme, the auxiliary brake device for the water body robot comprises a control system, a communication module, a monitoring module, a powder brake module and a water resistance braking module which are arranged in a ship body; the control system, the communication module and the monitoring module are connected in pairs; the control system is separately connected to the power brake module and the water resistance braking module; the power brake module comprises an intelligent rudder and a brake propeller, the intelligent propeller is connected to the brake propeller, and the intelligent propeller controls the brake propeller to work; the water resistance brake module comprises a brake disc, a displacement module and a rotary module, the brake disc is separately connected to the displacement module and the rotary module, and the displacement module controls the brake disc to fold and unfold; and the rotary module controls the rotary angle of the brake disc. The auxiliary brake device provided by the invention provides convenience for self-adaptive navigational speed of the robot and the water body flow rate, and controls resistance from many angles longitudinally and transversely, so that the brake technical demand on high operability and high efficiency of the water body robot is met.

The invention relates to the technical field of ships, and in particular relates to a device for preventing steering capsizing. The device comprises a ship body, wherein a proper and a stern rudder are arranged on the tail part of the ship body, a liftable supporting frame is arranged on the tail part of the ship body, two ends of the supporting frame are separately connected with a control baffle plate, a free end of each control baffle plate is connected to two sides of the ship body by virtue of a pull rope, anda plurality of control holes which can be opened and closed are formed in the control baffle plate. When in full-rudder sharp turn, the control baffle plate can effectively unload partial thrust of the stern rudder, the posture of the ship can be better controlled, the problem that the ship is easy to capsize in the full-rudder steering process is thoroughly solved, and the safety of the ship test and sailing process is greatly improved.

The invention discloses an improved electric ship provided with a brake device and used for municipal administration. The improved electric ship comprises a ship body. A first motor is fixed to the middle portion of the ship body. An eccentric block is connected with the first motor and is driven by the first motor to rotate. A push plate is arranged behind the first motor. An arc groove is formed in the side, facing the first motor, of the push plate. The outer end edge of the eccentric block abuts against the arc groove and exerts pushing force. Sliding pillars are arranged on the side, opposite to the arc groove, of the push plate. The ship body is further provided with sliding grooves matched with the sliding pillars. The sliding grooves are internally provided with springs which are used for abutting against the ends of the sliding pillars. The sliding grooves are further provided with limiting blocks which are used for limiting the sliding pillars to prevent the sliding pillars from sliding out of the sliding grooves. Two drive assemblies are symmetrically arranged on the two sides of the ship body. The ship body is pushed through the reciprocating movement of a driving plate, so that the technical problem that in the prior art, a ship body propeller can be stuck by weed is solved; and the structural design is reasonable, and practicability is achieved.

A device for stabilizing boats and other water craft that is generally blade-shaped and attaches to the body or hull of the boat. The stabilizing device projects generally outwardly and downwardly from the boat and is pivotally connected along the vertical axis at the attachment point to the water craft. The device improves the stability of the boat and resists unwanted drift either from a stationary position or from a desired heading.

A watercraft includes an improved braking device to assist slowing the watercraft when operated. The braking device includes a baffle plate and a guide plate. The baffle plate is movable between a non-braking position and a fully braking position. The guide plate cooperates with the baffle plate and is movable between a normal position and a fully deployed position. With the guide plate in the fully deployed position and the baffle plate in the fully braking position, the guide plate directs water against the baffle plate in order to slow the watercraft.

The invention relates to an emergency anchorage device comprising a resistance device which is arranged on the ship and can generate resistance so as to brake the ship. Because the resistance device and an inertial device play different roles, the inertia of the ship to be anchored can be counteracted, and the ship can move towards the opposite direction. Provided with the emergency anchorage device, the ship sailing in water can anchor immediately when encountering danger.

A watercraft includes a watercraft control mechanism that is capable of steering, decelerating, and/or trimming a watercraft without causing the stern to elevate and the bow to dive; steers or assists steering in off-power situations; steers, trims and/or decelerates a watercraft, or assists in steering, trimming, and/or decelerating a watercraft that can be stowed or retracted to minimize hydrodynamic drag at high speeds; steers, trims and/or decelerates a watercraft, or assists in steering, trimming, and/or decelerating a watercraft that does not become clogged or jammed by seaweed or flotsam or foreign objects floating in the water; and decelerates or assists in decelerating a watercraft in a smooth and stable manner when the watercraft is travelling at high speeds.

A ship for use at high speed and/or heavy seas having a single long and slender hull, a sharp bow and the aft end of the hull has a flat or slightly V-shaped bottom with at least one aft rudder, and at least one propeller or water jet for propulsion whereby the foreship has a draught that is equal or more than the draught of the aft end. The bow has a control surface that converts the water flow along the forward moving ship into an adjustable lateral force.

A marine vessel comprising:

• • a command module;
  • first and second buoyant tubular foils; and
  • first and second struts for connecting the first and second buoyant tubular foils to the command module, respectively;
  • wherein the first and second buoyant tubular foils provide substantially all of the buoyancy required for the marine vessel; and
  • wherein the marine vessel further comprises first and second engines enclosed within the first and second buoyant tubular foils, respectively, and first and second propulsion units connected to the first and second engines, respectively, for moving the marine vessel through the water.

The invention provides a novel backing structure device of a water navigation body, the main body structure of the backing structure device is a storable backing water bucket, the backing water bucket is deployed and mounted on a bottom plate behind a water injection nozzle of a spraying and pushing device deployed and mounted on the outer side of a bottom plate of the water navigation body, and the width of the backing water bucket is greater than the total width of the water injection nozzles of all corresponding spraying and pushing devices in front. According to the water navigation body reverse navigation operation, when only the spraying and pushing device corresponding to the reverse navigation water bucket works in the water spraying state, the reverse navigation water bucket is moved out of the storage bin according to the control instruction, water flow sprayed out of the water spraying opening of the spraying and pushing device is blocked so that the water flow can flow back, reverse navigation force is obtained and transmitted to the water navigation body, and reverse navigation of the water navigation body is achieved. When the propelling work of the water navigation body propelling device is stopped, the backward navigation water bucket of the water navigation body in the running state is released, the backward navigation water bucket obtains the resistance for preventing the water navigation body from continuing to navigate, a certain braking effect can be achieved, strong speed reduction and braking resultant force can be formed through combined operation with other speed reduction/braking devices, and rapid speed reduction/braking of the ship is achieved.

The invention relates to a telescopic stabilizer for a hull. The telescopic stabilizer is fixedly arranged on the hull, and comprises a stabilizer body and a stabilizer telescopic device, wherein thestabilizer telescopic device is fixedly arranged on the hull, and the stabilizer body is slidably arranged on the stabilizer telescoping device; the stabilizer telescoping device comprises a stabilizer mounting barrel and a telescopic assembly, wherein the stabilizer mounting barrel is fixedly mounted on the hull, and the stabilizer body is slidably arranged in the stabilizer mounting barrel; andone end of the telescopic assembly is fixedly connected with the stabilizer mounting barrel, and the other end of the telescopic assembly is fixedly connected with the stabilizer body. The stabilizercan produce no resistance when a ship is stabilizing at different speed, and the auxiliary pushing force can even be generated if needed; and the stabilizer can be stored in the hull under the sea condition without wind and waves so as to reduce the sailing resistance of the ship, and the service life of the stabilizer can be effectively prolonged.

Horizontally disposed fins are located in a plane in alignment with a raised trolling plate with fin trailing edges proximate the leading edge of the raised trolling plate. A mounting bracket of a trolling plate assembly serves to mount the fins superjacent the anti-cavitation plate of a propulsion unit.