摘要:
Disclosed is a vehicle with only two parallel independent drive wheels, capable of moving on a solid or semi-solid ground, as well as on water if provided with blades on the wheels. The vehicle is stable in that it has a unit for lowering the center of gravity, which are housed in the wheels, which are in turn internally hollow for this purpose.
摘要:
A marine vessel comprising: at least one buoyant tubular foil; and at least one baffle plate positioned about the perimeter of the at least one buoyant tubular foil so as to protrude into the flow of water passing by the perimeter of the at least one buoyant tubular foil, whereby to create a high-pressure zone fore of the at least one baffle plate and a low-pressure zone immediately aft of the at least one baffle plate, whereby to create a dense stream of supercavitated water immediately aft of the at least one baffle plate.
摘要:
The present invention relates to a device for optional activation of a vertical-axis propeller to be configured on the lower surface of a marine vessel, said device comprises a vertical-axis propeller; a sliding means associated with the lower surface of the marine vessel and sliding the vertical-axis propeller; at least one slider that is associated with the vertical-axis propeller and is in sliding relation with the sliding means; and at least one driving means for driving the vertical-axis propeller in upwards and downwards in the sliding direction.
摘要:
The invention relates to amphibious and “ground affect” vehicles. The invention incorporates a special wheel consisting of a box portion affixed to a disc or wheel portion. A vehicle with such wheels can roll on most surfaces with easy transition from one medium to another. For example, it can roll from the terrain, onto the water and then back to the land. Such wheels enable vehicles to roll on top of the snow and other surfaces where conventional wheels cannot.
摘要:
A bicycle and board apparatus comprising a buoyant board, a front wheel, a rear wheel and a steering member, and being mountable and usable in a first configuration as a bicycle in which the buoyant board is the bicycle's frame and in a second configuration as a surfboard by changing the orientation of the front wheel, the rear wheel or the steering member with respect to the buoyant board.
摘要:
A marine propulsion system includes a housing configured to be coupled to, or within, a marine vessel hull. At least one pair of counter-rotating impellers is disposed within the housing such that the rotation occurs in a plane generally parallel to the surface of the water. A moveable output nozzle is coupled to the rear portion of the housing and can move to facilitate controlling the direction of travel of the vessel.
摘要:
The invention relates to a watercraft having improved characteristics for travel in ice, particularly an icebreaker, supply vessel, cargo vessel or corresponding, which watercraft has a hull, which has at the stern portion a propulsion and steering arrangement, which is mainly responsible for movement and steering of the watercraft and which includes at least one skeg, in which is located at least one propeller device. In accordance with the invention, said skegs comprise two units located on different sides of the center line of the hull. Said propeller device is located at the stern end of the skeg. In addition, the skeg has between the propeller device and the hull of the watercraft, in the longitudinal direction on the skeg, one or more thruster devices to provide a water flow mainly transverse in relation to the hull.
摘要:
An arrangement of floating platforms is provided, including (a) an anchored main platform and (b) one or more outer platforms, each of which being connected to the main platform by at least one connection element. One or more of the main and/or outer platforms are rotatable about a vertical axis by drive units which are fixed thereon. Marine engines having a propeller propulsion system are provided as drive units on the main platform and/or the outer platforms.
摘要:
A steering control system for ski boat with an inboard motor and a single, non-steerable propeller. The control system augments the traditional aft rudder with a forward rudder (located immediately in front of the propeller), and controls one or both rudders to improve steering when backing and in low forward speed conditions. The control system may control only the forward rudder, while the pre-existing controls operate the aft rudder, or optionally controls both rudders. The rudder angle control algorithm calculates proportional rudder angles based on helm and throttle settings, or optimal rudder angles based on more sensed conditions including the operator's helm and throttle controls, the ski boat's direction and speed, propeller RPM and thrust direction, and each rudder's angle. An electronic controller sends control signals to the rudders to achieve the optimal rudder angles.
摘要:
A method of designing a custom boat propeller with optimized geometry for a boat and motor combination based upon a user generated performance data set.