Faja dolor de espalda

Pie quebrado, muletas - lesión de los deportes According to principles of the disclosure, a variable control rotor 109 is provided that may be used, for example, in a hydrokinetic device 100, to harness the kinetic energy of a fluid current, such as, for example, an ocean current, a river current, a tidal current, or the like, and drive a power generator. The water in the world’s oceans is constantly in motion, and in many locations there exist repeatable, consistent and rapidly moving ocean currents with speeds in excess of 1.0 meters-per-second (m/s). Systems have been developed for controlling rotor blade pitch angle, many of which use some form of energy to operate a blade pitch angle change mechanism. Systems have also been developed for controlling rotor blade length, many of which use some form of energy to operate a blade lengthening or shortening mechanism.

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Fitness on the beach Other mechanical systems may use, for example, a bearing ring to transfer motion from a device mounted on the generator- side to the rotating hub-side for blade pitch angle changing purposes. The afore-noted systems share several disadvantages, the most significant of which is a requirement to transfer requisite energy for blade length or pitch angle change from a fixed generator-side to a rotating hub-side, thus making rotor hub operation significantly more complex and failure prone. It may also be possible to pitch the rotor blades 307 to a fully feathered condition (or fully disengaged non-operational position) and halt the rotation of the rotor 109, extend a high pressure gas conduit from a source located on the fixed generator side 215 and recharge the energy storage reservoir 320 in the hub 308 prior to continued operations of the hub 308. Periodically, the hub controller in hub 308 may send communication signals to the main controller, the station, the vessel, and/or the like, which includes informational updates, such as, for example, the amount of energy remaining within the energy storage reservoir 320, or the like.

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Changes to rotor blade pitch angle in a horizontal axis rotor may be accomplished by the use of a variable control rotor hub, by rotating one or more rotor blades about a span-wise axis thereby controlling, modulating and/or maximizing the power output level. The THOR hub controller may be configured to control the flow of electrical energy from the energy storage reservoir 420 to the electric servos 421 to effectuate and control movement of the rotor blades 407. The electrical drive unit 422 may further include, for example, electromagnetic telemetry transducers, acoustic transducers, and/or mechanical switching transducers. The present disclosure provides a method, a system and a hydrokinetic device that harnesses the kinetic energy of flowing water currents to provide clean, renewable energy, as well as a variable control rotor hub with a self-contained energy storage reservoir, a method for operating the variable control rotor hub and system comprising the variable control rotor hub.

Cómo aliviar el dolor de espalda por frío - Reflex The hub controller 123 may respond by operating the blade driver 125 (for example, opening (or closing) control valves 322, shown in Fig. For example, the hub 108 may be configured to operate and supply the energy required for rotor blade pitch angle changes and rotor blade length changes from an energy storage reservoir completely self contained within hub 108, thus eliminating the requirement to transfer energy from the fixed body to the rotating hub using complex failure prone mechanisms and further providing advantages, such as, for example, reliable operation, resistance to a “wet” hub operating environment where the presence of seawater within the hub 108 enclosure does not complicate or compromise operation, and accommodation of the extreme pressures associated with operating at great depths, since the self-contained energy storage reservoir and other components may be housed within a separate pressure vessel, such as, for example, a compressed gas cylinder or the like located entirely within hub 108. The wet hub allows for the elimination of failure prone seals that may be required if the interior space of the hub needed a dry operating environment.

The hub 308 may be flooded with water and exposed to large pressure depths, since the compressed gas system 320, 321, 322 components may be configured to reject the presence of water and pressure. A plurality of energy storage reservoirs 320 may be included in the hub 108, as well as, for example, a plurality of regulator valves 322. Additionally, a separate energy storage reservoir (not shown) which is distinct from the energy storage reservoir 320 may be contained within the interior of hub 308 and in the event of failure or loss in pressure of the energy storage reservoir 320, the separate energy storage reservoir (not shown) may provide energy to effectuate the mechanical movement and rotate the rotor blades 307 to, for example, a fully feathered non- operational condition. The rotor blades 107 may be pitched to a disengaged fully feathered non-operational pitch angle condition, causing rotational stoppage of hub 108 and thereby ceasing electrical production.

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107. The rotor blade 107 pitch angle changes provide a number of operational advantages for the hub 108 and such advantages are well known to those skilled in the art. 455) blade length and determining (Step 454) and adjusting (Step 456) blade pitch angle are shown and discussed above as being carried out substantially simultaneously, the sub- processes may, instead, be carried out in series, as will appreciated by those having ordinary skill in the art. Dolor de rodilla intermitente . The released energy may be harnessed and used by the blade driver 125 to effectuate rotor blade pitch angle changes to the rotor blades 107. The blade driver 125 may include, for example, one or more pneumatically driven actuators, one or more electrical actuators or servos, or any other mechanism that is capable of converting energy to mechanical movement. The hub may further comprise: an onboard hub controller that controls the flow of energy from the energy storage reservoir to the blade driver; a communicator that is configured to receive a communication signal from an external source; an external mechanical switch that initiates adjustment of rotor blade pitch angles to disengage an ambient current flow; or a torsion spring that returns a rotor blade to a fully feathered pitch angle position.

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Communication signals may be issued from, for example, the THOR controller 126, of another hydrokinetic device 100, a station, a vessel, or the like, and sent to the hub communicator 124 located in hub 108 via a communication link. Furthermore, communication signals may be sent between the one or more stations (not shown) and the hydrokinetic device 100, as well as between hydrokinetic devices 100 that may be located in, for example, a patterned deployment array (not shown). POWER CONTROL PROTOCOL FOR A HYDROKINETIC DEVICE INCLUDING AN ARRAY THEREOF, the entire disclosure of which is hereby incorporated herein by reference for all purposes as if fully set forth herein. The blade driver may comprise: a plurality of air chambers that are flooded with ambient to return a rotor blade to a fully feathered rotor blade pitch angle. The rotor blade movement may include rotor blade pitch angle changes or rotor blade length changes.

YES at Step 453), then the THOR hub controller 123 may control the blade driver (such as, for example, discussed below with reference to Fig. The THOR controller 126 and THOR hub controller 123 may each include a computer (not shown). In accordance with various embodiments of the present disclosure, the methods described herein are intended for operation as software programs running on a computer. The energy storage reservoir may comprise at least one of: a battery; and a compressed gas storage. The internal energy supply source may comprise a secondary power generator and an impeller. Alternatively, the secondary power generator 411 and impeller 412 may be any other mechanism that is capable of generating energy to recharge the energy storage reservoir 320, including, for example, energy derived from salinity gradients or temperature gradients that may be prevalent given the frequent depth changes associated with the operation of the hydrokinetic device 100. Energy resupply to the energy storage reservoir 320 may also be accomplished by, for example, a photovoltaic mechanism or by replacing the depleted energy storage reservoir 320 with a recharged energy storage reservoir.

Electrical energy generated by the power generator may be routed to, for example, neighboring hydrokinetic devices 100 or one or more stations (not shown) located in (or on) the water, or on (or in) land, to collect the electrical energy from the hydrokinetic device 100 prior to transmitting the electricity to, for example, a utility grid, which may be located on water or land. During operation and the production of electrical energy, the variable control rotor hub 108 may rotate about a main rotational axis 115 and the rotor blades 107 may rotate about their span-wise axis 212 (shown in Figs. In the example of the hub 108 shown in Fig.

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3 and 4 is equally applicable to the hub 408, shown in Fig. An unfulfilled need exists for a variable control rotor hub that is configured to be operationally simple and self contained, and where the hub does not require energy for blade length or pitch angle changes to be supplied from the fixed generator side through complex and failure prone mechanisms. The hydrokinetic device includes a hub that comprises: a hub body that is rotatable about a rotational axis; a plurality of rotor blades that are coupleable to the hub body, each of the plurality of rotor blades being configured to rotate about a respective blade axis that is substantially perpendicular to the rotational axis; an energy storage reservoir entirely containable within the hub body; and a blade driver that is configured to effectuate rotation of the plurality of rotor blades about said rotational axis and to effectuate substantially linear movement of each of said plurality of rotor blades along said respective blade axis.

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The hub comprises: a hub body that is rotatable about a rotational axis; a plurality of rotor blades that are coupleable to the hub body, each of the plurality of rotor blades being configured to rotate about a respective blade axis that is substantially perpendicular to the rotational axis; an energy storage reservoir entirely containable within the hub body; and a blade driver that is configured to effectuate rotation of the plurality of rotor blades about said rotational axis and to effectuate substantially linear movement of each of said plurality of rotor blades along said respective blade axis. Fig. 6B shows a detailed view of a blade driver in Fig.

Fig. Gastritis dolor de espalda . 2A shows a rear view of the hydrokinetic device of Fig. Fig. 2B shows the rear view of the hydrokinetic device of Fig. The hydrokinetic device 100 may include the hydrokinetic device disclosed in co-pending U.S. A network may include, for example, the Internet, a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a personal area network (PAN), a campus area network, a corporate area network, a global area network (GAN), a broadband area network (BAN), marine acoustic network (MANET), any combination of the foregoing, or the like.