Abstract:
Certain exemplary embodiments can provide a system, which comprises a first pontoon, a second pontoon, an undercarriage, a first rail, first set of track pads, a sprocket, and a first roller set. The first pontoon comprises a first solid tank. The second pontoon comprises a second solid tank. The undercarriage comprises the first pontoon and the second pontoon. The undercarriage defines a channel.
Abstract:
Disclosed is a propulsion unit for propelling a vessel. The propulsion unit comprises a main body configured to be arranged at a keel of the vessel and comprising a pivot point, a fin being movably arranged in relation to the main body, and an actuator assembly for generating a heave motion of the fin in relation to the main body. The actuator assembly comprises at least one actuator. The fin is connected to the pivot point, such that the fin is arranged to pivot around the pivot point when the at least one actuator generates the heave motion of the fin, thereby generating a pitch motion of the fin.
Abstract:
A human propelled watercraft having a pair of flexible fins supported by a mast extending into the water each adapted to oscillate through an arcuate path in a generally transverse direction with respect to the central longitudinal dimension of said watercraft. Pedals are provided for applying input force whereby as input force is applied, the flexible fins can twist to form an angle of attack for providing forward thrust with respect to the longitudinal dimension of the watercraft while moving in both directions along the arcuate path. Each of the fins preferably is composed of a layer of stiff and durable material that is wrapped around the mast. The two layers of material touch at the trailing edge and they are free to slide relative to each other. Preferably, each of the fins is provided with adjustable tensioning at the tip of the mast.
Abstract:
A curved body (830), for propelling fluids, crafts and harvesting fluid power, comprises a convex outer leading surface securely connected to a concave inner trailing surface to define an open vessel. Upon oscillation, ambient fluids are accelerated and ejected from the vessel to propel the vessel and the ambient fluids in opposite directions. Apparatus is secured to a motive power source directly or via actuating member (832), by fastening through aperture (834). The oscillating propulsor can be operated directly by a reciprocating motive power source, and indirectly by the reaction momentum imparted to a supporting base. Thrust may be vectored by rotation of the curved body (830) about the supporting base. Drag reduction using fluid dynamic shapes, intake openings, a fore fin (844), an aft fin (846), and a lubricant cavity, are embodied. Enhanced propulsion using multistage oscillating propulsors is embodied.
Abstract:
An apparatus for oscillating and orienting a vane (2) relative to a fluid, comprising a main lever (32) pivotally connected at one end about a reference axis (4); a vane pivotally connected to the main lever about a vane axis (6) remote from the reference axis, the vane axis being substantially parallel to the reference axis; a main drive means for oscillating the main lever about the reference axis so displacing the vane from side to side; an angle change assembly (7) for pivoting the vane about the vane- axis comprising (i) an angle drive means adapted to oscillate with a phase lag of approximately 90 degrees to the main drive means; (ii) control means connected between the angle drive means and vane adapted to convert the oscillation of the angle drive means to oscillation of the vane about the vane axis; and, (iii) an offset means adapted to add an offset to the centre of angular oscillation of the vane about the vane axis.
Abstract:
Device for transportation on water comprising two elongate separate units (101, 201) arranged to be worn in pairs essentially vertically on each of a users (1) leg, both units (101, 201) comprising an elongate body (102, 202) extending along essentially the whole length of the units, the elongate body (102, 202) comprising three main parts; an upper part (105, 205) with fastening means (106, 206) for fixing a lower part of a leg with the toes facing forward, the upper part (105, 205) being arranged to be above water level in use; a lower part (107, 207), on which at least one carrying element (108, 208) is arranged, the lower part (107, 207) being arranged to be below water level in use; and a central part (109, 209) connecting the upper part (105, 205) with the lower part (107, 207), the central part being arranged to be partly above water level and partly below water level in use. The carrying elements (108, 208) extend at substantially right angles sideways from respective unit (101, 201), the carrying elements (108, 208) having a front part (108a, 208a) at which they are pivotally connected to the elongate body (102, 202) and a rear part (108b, 208b) extending backwards with respect to the elongate body (102, 202), the carrying elements (108, 208) being pivotable between an upper position, at which they are essentially horizontal, providing buoyancy to the user (1) such that his weight partly takes him forward, and a lower position, at which they may be placed essentially vertical with the rear parts (108b, 208b) pointing downwards, the lower position being approached automatically when a unit (101, 201) is driven upwards through the water.
Abstract:
The present invention relates to an underwater device capable of propelling and self-charging at the air and surface of water. Present invention more also capable of propelling inside water and surface of water. The pair of wings are provided at the both upper and lower section of the device wherein twisting rod assembly(7) and movable wrist(6) is provided with the upper wings section which is excreting the force on the upper wings when the wings are propelling, that force drives the device.an flapping wings assembly(13) with the gear arrangement and the semi-foldable panel(91) is provided to the lower wings section wherein the semi foldable panel(91) is providing the housing to the lower wings for the charging mechanism, and the flapping wing assembly(13) is providing the flapping mechanism to the wings that help to retain the required wing position for the charging and propelling of the lower wings.
Abstract:
Embodiments of the present invention are directed to a modular, biomimetic, underwater vehicle capable of propulsion using one or more tail undulation methods, such as anguilliform or carangiform propulsion methods.
Abstract:
A manually propelled watercraft for transporting a user on water, comprising a buoyant body having a longitudinal axis and a top side and a bottom side disposed adjacent to the water, a track disposed on the body substantially parallel to the longitudinal axis, a vehicle having a bottom side and being slidably coupled to the track and movable to and from first and second positions relative to the body, and a fin coupled to the bottom side of the vehicle and being movable to and from an extended position that is inclined relative to the longitudinal axis and a retracted position that is substantially parallel to the longitudinal axis, wherein when the vehicle is moved from the first position to the second position, the first fin is substantially disposed in the extended position to maximize water resistance for propulsion of the body, and when the first vehicle is moved from the second position to the first position, the first fin is substantially disposed in the retracted position to minimize water resistance.