| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Thrust measurement system for small planing watercrafts | US10462438 | 2003-06-16 | US20030230226A1 | 2003-12-18 | Masatoshi Murakami; Yasuo Torii; Tomoyasu Katayama |
| A thrust measurement system includes a water pool for receiving therein a watercraft in a floating condition, a bow holding apparatus disposed on an edge portion of the water pool for holding a bow of the watercraft, a thrust measurement device mounted in the bow holding apparatus, and an anchoring device spanning between an edge of the water pool and a hull of the watercraft for anchoring the watercraft in position against swinging movement about the bow. In order to permit free rise and fall of the bow of the watercraft, the bow holding apparatus has a floating structure that can move freely in a vertical plane. | ||||||
| 222 | Shock testing of naval vessels using seismic airgun arrays | US09678976 | 2000-10-05 | US06662624B1 | 2003-12-16 | Phillip Rowland Thompson |
| Modern warships are designed to withstand the effects of a near miss underwater explosive event. To demonstrate that ship structure and equipment are designed and built to the requisite standard it is common for the entire warship to be shock tested by detonating controlled explosive charges in close proximity to the vessel. By using a partially phased and partially synchronous array of seismic airguns of the type used in oil exploration it is possible to simulate the explosive shock wave and provide a safe, repeatable and more environmentally benign test. The method can be used to provide shock excitation directly onto the keel of a vessel due to the relatively low energy of the airgun discharge bubbles in addition to the more conventional off-beam scenarios. This novel method of shock testing can be applied to ships, submarines, underwater equipment and test models or specimens. | ||||||
| 223 | Water-flow testing apparatus | US09757186 | 2001-01-09 | US20020088270A1 | 2002-07-11 | Thomas Phillip Schumacher; David Wayne Meece; Steven Craig Mertz |
| A water-testing apparatus tests an article such as a turbine airfoil component having at least two water flow passage article inlets. The apparatus includes an apparatus body having a water inlet, and an attachment head integral with the apparatus body. The attachment head includes a holder that receives the article therein in sealing contact with an article seal, and at least two ports, each port being in registry with at least one of the at least two water flow passage article inlets. A water flow controller within the apparatus body has a controller inlet in water-flow communication with the water inlet, at least two controller outlets, each controller outlet being in water-flow communication with one of the ports of the attachment head, and a flow-control valve disposed in a water flow path between the controller inlet and the controller outlets. The flow-control valve is controllable to controllably connect a single one of the controller outlets at a time to the controller inlet. | ||||||
| 224 | Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship | US09068844 | 1998-05-15 | US06186085B1 | 2001-02-13 | Hiroharu Kato; Yoshiaki Takahashi; Yuki Yoshida; Akira Masuko; Osamu Watanabe |
| A method for reducing frictional-resistance at a hull (2) of a ship (1), characterized in that the method comprising a step of ejecting micro-bubbles (8) having predetermined diameters; wherein the micro-bubbles (8) are ejected into water from a position adjacent to the starting point of desired stream line (F.L.) of water and from the position where the static pressure is low; the stream line (F.L.) being directed, from the submerged shallow position at a stem portion (4) of the ship's hull (2), to the ship's bottom (5) along both side surfaces of the ship's hull (2), so that the ejected micro-bubbles (8) are transferred to the ship's bottom (5) along the stream line (F.L.); whereby the micro-bubbles (8) are distributed at at least a part of the circumferential area of the submerged portion of the hull (2), thus reducing frictional-resistance at a hull (2) of a ship (1) while cruising. | ||||||
| 225 | Apparatus and method for manipulating a body in a fluid | US110737 | 1998-06-29 | US6029519A | 2000-02-29 | Robert Kuklinski |
| Apparatus for testing hydrodynamic performance characteristics of an object is operative for remotely manipulating the object using standing acoustic wave fields. The object is provided with a plurality of internal solid ies, each having a region of ordered voids. The object is placed in a fluid flow tunnel, and standing wave fields are propagated through the fluid by means of transducers mounted on the walls of the tunnel. The wave fields align the ordered voids in the solid bodies, and the alignment forces are transmitted to the bodies resulting in movement of the object. Matching pairs of transducers can be employed to create movement in roll, pitch, and yaw directions. Once a static position of the object is established by adjusting the power levels of the various transducers, movement of the object is accomplished by introducing ordered frequency shifts into the wave fields, or by physically moving the positions of the transducers relative to the object. Drag measurements can be calculated from the different transducer power levels required to maintain a static position of the object under varying fluid flow conditions and object orientations. | ||||||
| 226 | Hydrofoil force balance | US279037 | 1994-07-20 | US5513526A | 1996-05-07 | Paul J. Lefebvre; William P. Barker |
| The present invention relates to measuring device for measuring a componentf a force acting on a test body, such as a hydrofoil, positioned within a testing apparatus. The measuring device has a test body formed by a foil shaped center section and two adjacent end sections. Each end section is joined to the center section by a flexure member having sufficient stiffness so that there is negligible relative motion between the center section and the end sections as a fluid medium flows past the center section. At least one strain gauge is mounted to at least one flexure member to measure the forces acting on the center section. A method for measuring the load on a test body is also described. | ||||||
| 227 | Device for measuring the wake of a sailing model | US228181 | 1988-08-04 | US4899580A | 1990-02-13 | Pierre L. Leguet; Jean-Claude Dern |
| A device for measuring the wake of a sailing model in a trail tank is equiped with a platform capable of pursuing the model in the same direction and at the same speed as the model. The device includes five optical point measurement heads, carried on the platform and capable of moving horizontally with respect to the platform and crosswise with respect to the direction of pursuit of the model, thereby scanning the wake transversely and measuring the water surface undulation due to the model wake, in five adjacent vertical parallel planes forming a strip. | ||||||
| 228 | Pneumatic/hydraulic wave generator | US134091 | 1987-12-17 | US4812077A | 1989-03-14 | George W. Raike |
| A pneumatic/hydraulic wave generator is associated with the deep end of a swimming pool and includes a pneumatic system with a pair of inner caissons and a pair of outer caissons. The caissons communicate with the swimming pool through a submerged passage. A pneumatic system includes a motor-driven fan which communicates selectively with duct lines to the caissons through a pair of two-position air directional valve assemblies. When the caissons are actuated with pressurized air from the fan, the water levels therein are driven down, creating waves in the swimming pool. | ||||||
| 229 | Combined flapper and piston motion wave board module | US53704 | 1987-05-26 | US4783860A | 1988-11-15 | Edgar R. Funke; Michael Miles; Larry Corish |
| There is described a wet back device for generating waves in a liquid in a test tank or the like. Such devices are known and usually operate a wave generating board by a push-pull piston operation or a flapping wave generating board pivoted in the tank and rocked about a horizontal axis to move water in the tank and create waves therein. The device described is capable of producing the push-pull generated wave motion or the flapper type motion, or a combination of those motions and is provided with seals between the wave generating board and the tank walls or between individual wave generating boards (in a multiple board arrangement) and the walls of the tank. Closure plates are provided on the support frames for the boards. Gliding surfaces are provided to ensure reliable action and frame members are located to provide energy loss in fast flowing water in the tank. | ||||||
| 230 | Apparatus for measuring the concentration of cavitation nuclei in a liquid | US807081 | 1985-12-10 | US4644808A | 1987-02-24 | Yves Lecoffre |
| In hydrodynamic testing, in particular in laboratory testing of propellers, it is necessary to measure the concentration of cavitation nulcei in a liquid. The measurement is performed by counting bubbles of vapor formed by the cavitation nuclei in a zone (C) having minimum cross-section and pressure (Pt) in a forced flow along a duct. A deflector core (18) is disposed on the axis of a diverging downstream portion (C) of said duct in order to avoid the liquid streamlines from becoming detached and to facilitate bubble counting. | ||||||
| 231 | Simulator of fluid flow in field of flow entailing combustion or reaction | US550005 | 1983-11-09 | US4554832A | 1985-11-26 | Toshiaki Hasegawa; Yasuo Hirose |
| The flow of fluid in a field of flow entailing a combustion or reaction is simulated in a model water tank by a flow of water containing a large volume of fine, uniform air bubbles made visible by projecting a slit light upon the same and then analyzing and comparing the irregular reflection obtained with standard values for the purpose of determining changes in flow, velocity of flow, and like changes, and for predicting changes. | ||||||
| 232 | Method for recording stationary flow patterns at boundary surfaces | US612451 | 1975-09-11 | US3978734A | 1976-09-07 | Horst Gussefeld |
| Stationary liquid flow patterns at boundary surfaces are recorded by coating the boundary surface with a layer of lacquer which can be attacked and exposing the boundary surface to a flow of liquid containing a substance which attacks the lacquer layer. In accordance with the preferred embodiments a photo-resist lacquer is sprayed onto the surfaces and etching substance dissolved in a liquid which is caused to flow past the boundary surface making possible a visible recording of the formation of eddies at obstacles. | ||||||
| 233 | Power tester for outboard drive assemblies | US563516 | 1975-03-31 | US3969931A | 1976-07-20 | Charles T. Lanning |
| A hydraulic pump is serially connected in a closed loop hydraulic circuit provided with a control valve for controlling the flow of hydraulic fluid through the circuit and the hydraulic motor has mounting structure operatively associated therewith for releasably supporting the hydraulic motor from the lower end gear housing of a marine drive assembly such as that used on outboard motors and inboard/outboard drive assemblies. The fluid motor includes a rotary power input shaft and is supported by the support structure with its input shaft axially aligned with the rear end of the propeller shaft of the lower end gear housing. Coupling structure is utilized to releasably drivingly couple the propeller shaft to the rotary input shaft of the hydraulic motor and the latter, in conjunction with the control valve equipped closed loop fluid circuit, may be used to apply an adjustable load on the marine drive assembly propeller shaft and in this manner the associated outboard motor for inboard/outboard drive system may be operated at any throttle setting and operating speed in order to simulate actual on water operating conditions, the hydraulic motor and associated marine drive unit being receivable within a conventional test tank or a flushing unit attachment being utilized in conjunction with the marine drive assembly in order to provide sufficient cooling water for the motor of the marine drive assembly. | ||||||
| 234 | Wave motion simulator | US535504 | 1974-12-23 | US3964316A | 1976-06-22 | Kyoichi Abe |
| An apparatus to generate a wave-like pattern of forces on a surface effect ship utilizes a flexible membrane which undulates in a water wave-like manner, the crests of the waves transferring forces to the surface effect ship. The membrane is undulated in its sine wave configuration by means of a series of linkages, one link of which is pinned to the underside of the membrane. That link is reciprocally actuated and the combined movements of the various linkages cause the membrane to undulate as would water waves. The main drive motor drives a primary shaft to which are connected a series of gear boxes which in turn drive secondary drive shafts. By controlling or varying the speed of the primary drive motor, the frequency of the generated waves may be varied. At each linkage station there is a crank and the connecting rod is adjustably connected to the crank. The amplitude of the waves can be varied as desired by adjustably positioning the connecting rod along the crank. | ||||||
| 235 | Experimental basin and means for testing behaviors of offshore marine structures | US3633419D | 1969-12-03 | US3633419A | 1972-01-11 | ARITA YUKIO; NAKAO YOSHIAKI; IWAI TAKASHI; TAGAYA KOOZOO |
| A basin for testing the effect of a marine platform or similar marine structure characterized by providing a long basin, a waveforming means provided at one end of said long basin, a wave damper at the other end thereof, a water circulation channel extending along the outside of said basin to communicate with the bottom of each end of said basin in the proximity of each end, a water-feeding means to move the water in said channel in at least one direction and thereby to produce a stream or current as desired in the water in said basin.
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| 236 | Variable-pressure, variable-depth, freesurface, high-speed, circulating water channel | US40520764 | 1964-10-20 | US3333465A | 1967-08-01 | ALEX GOODMAN; JOHNSON VIRGIL E |
| 237 | Wave force meter | US44277754 | 1954-07-12 | US2845796A | 1958-08-05 | MORISON JACK R |
| 238 | Outboard engine analyzer | US60730456 | 1956-08-31 | US2831345A | 1958-04-22 | WOLF NORMAN A; MCLARNEY JOHN E |
| 239 | Hydrodynamic testing apparatus | US20940251 | 1951-02-05 | US2585442A | 1952-02-12 | COTTON ROBERT B |
| 240 | Apparatus for hydrodynamictesting of ship models | US51877944 | 1944-01-18 | US2378412A | 1945-06-19 | LEE CHARLES A |
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