148results about How to "Increase propulsion" patented technology

An engine power extraction control system controls the main propulsion engines and the electrical machines that are coupled thereto to supply an appropriate amount of aircraft thrust and electrical energy to the aircraft. The engines and electrical machines are also controlled so that the propulsion thrust that is generated is split between the various turbines in the main propulsion engines to maintain an adequate surge margin and to minimize residual thrust generation.

An article of cleated footwear comprises an upper for holding a foot of a wearer to a sole having an outsole plate. The outsole plate includes a predetermined first metatarsal region that generally overlies the respective skeletal structure of a human foot. Several ground engaging members extend downwardly from the outsole plate to provide traction on a ground surface. The outsole plate includes a downwardly extending metatarsal head cradle located on a lateral side and a medial side of the first metatarsal region to reduce stud pressure and provide traction control. The outsole plate may include a distal phalanx region and a predetermined proximal phalanx region. A first ground engaging member is located in the distal phalanx region and a second ground engaging member is located in the proximal phalanx region for toe off movements.

An article of footwear includes an upper and a sole structure having an outer periphery and one or more pontoons flexibly and resiliently joined to the sole structure. The pontoons are configured to spread laterally when the footwear is loaded to thereby increase the surface area of the sole structure and elastically retract back to an original position when the footwear is unloaded. The increased surface area of the sole reduces sinking of the footwear in soft, loose or saturated ground. Optionally, the sole structure includes paddle blades.

An article of footwear includes a sole having a different performing lateral and medial regions. Ground engaging members, such as cleats, provide traction and one of the regions, preferably the lateral region, includes a stability member extending from the sole and spanning between a pair of adjacent ground engaging members in a heel to toe direction. The ground engaging members may have a body and a tip portion. Each tip portion may be integrally formed with all or a portion of its respective body. The medial and lateral regions include buttressing member having different characteristics and dimensions for strengthening the ground engaging members with providing enhanced flexibility.

The present invention includes improvements to cross-flow fans and cross-flow fan propelled aircraft including improved control, a dynamically adjustable vortex wall and internal housing, a vortex tube, vertical takeoff and landing rotorcraft configurations, the inclusion of an optimized oscillating blade fan, a wavy vortex wall, power plant refinements, dual leading and trailing edge configurations, stability improvements, tip plates, tapered wings, tapered fans, a fan construction method, and underwater applications.

The invention relates to a large-diameter earth pressure balance shield machine. The machine comprises a cutterhead, a cutterhead drive part, a propulsion oil cylinder, an erector, spiral conveyors and a frame; the cutterhead is a double-cutterhead which comprises a peripheral large cutterhead and an independent central cutterhead; the cutterhead drive part comprises two driving mechanisms which drive the peripheral large cutterhead and the independent central cutterhead respectively; and the peripheral large cutterhead and the independent central cutterhead rotate independently and bidirectionally. Compared with the prior art, the shield machine adopts the double-cutterhead design, greatly optimizes a cutting speed of the cutterhead on a soil body, further improves a propulsion speed of the shield, optimizes the disturbance effect of the cutterhead on the soil body, and prevents the rolling of a shield machine body; different opening rates are designed on the cutterhead and are suitable for different situations of a central part and a peripheral part when a tunnel is advanced; and three spiral conveyors discharge soil, effectively control the posture of the shield, and prevent the deviation of a tunnel axis.

A sliding device with onboard moving-magnet linear motor is envisaged making the reciprocating stroke of a table longer, and enhancing the propulsion, high velocity and response of the table even with small in dimension, compact in construction and better in production efficiency. With the sliding device, a bed serves as a coil yoke while a table is as a magnet yoke. An armature assembly is composed of armature windings, a board on which the armature windings lie in juxtaposition, a wiring lying on the board and making connections with a power line to supply electric power to the armature windings, a protective sheet covering an overall surface of the armature windings and moldings of adhesive material to get the armature windings and connections of a power line with wiring closely adhering to the board.

An off-road dolly has a pneumatic system for providing compressed air to trailer brakes and dolly brakes means for providing synchronized engagement thereof. Off-road dolly also has an electrical circuit providing synchronized engagement of dolly signal lighting system with trailer signal lighting system. Propulsion for off-road dolly and trailer can be provided externally, using a forklift, or by the off-road dolly itself using a motor installed thereon. Synchronized operational engagement of dolly brakes with trailer brakes, and dolly signal lighting system with trailer signal lighting system, can be controlled using a remote control.

The invention measures propulsive force of an ambulating subject to provide real-time feedback, which may be used for clinical assessment or rehabilitation / training such as that related to walking ability, or any other form of ambulation. Subjects with propulsive deficits have a considerable and underutilized propulsive reserve available during level ambulation. The invention uses real-time propulsive feedback as a therapeutic strategy to encourage a subject to access the propulsive reserve and improve forward propulsion during ambulation.

A shoe foundation assembly for receiving and retaining a number of cleats or spikes into the bottom sole of the shoe such as might be utilized in various sporting events. The shoe foundation assembly includes a unitarily molded shoe cradle component with a toe guard at a first end, a heel guard at a second end, and arch medial. An outsole is bonded to the midsole component sized and shaped to be positioned on the underside base of the shoe cradle component. The detachable cradle incorporates hillock apertures for positioning a number of sealable inserts to receive the cleat / spikes. Bonded to the midsole is an outsole component having a plurality of slit apertures also positioned to receive the plurality of cleat / spikes. A number of different types of cleats or shoe spikes may be inserted into the apertures in the outsole and through the sealable inserts within the midsole. Each of the cleat / spikes incorporates a structure for the retention of the cleat / spike onto the shoe foundation.

A pair of shoes is provided that includes a left and a right shoe. The left shoe includes an upper having a left forefoot portion, the left forefoot portion having a lateral side with a portion thereof made of a first material and a medial side with a portion thereof made of a second material. The right shoe includes an upper having a right forefoot, the right forefoot having a medial side with a portion thereof made of the first material and a lateral side with a portion thereof made of the second material, wherein one of the first material and the second material provides more support than the other. The more supportive first material can include a polyurethane, such as TPU, a non-stretch synthetic material, or ceraprene. The second, less supportable material can be a light weight breathable mesh.

A propeller fan may strongly draw the flow toward the inner circumferential side and greatly improve the pressure efficiency by degrading the tendency of the flow near the pressure surface to be inclined toward the outer circumferential side at the trailing edge of the blade. The blade is provided with a recessed portion raised toward a suction surface at a central portion of a trailing edge of the blade in a radial direction such that the recessed portion is open at least on a pressure surface of the blade, the recessed portion extending from the trailing edge toward a leading edge of the blade, and a cross section of the recessed portion taken in a radial direction is provided with a pair of lateral portions rising at a predetermined angle with respect to the suction surface and facing each other. The span-wise width of the recessed portion between the lateral portions increases as the recessed portion extends from an upstream side to a downstream side.

A sliding system with onboard moving-coil linear motor is disclosed in which an armature assembly is a printed-circuit board, armature windings of flat configuration and coil stay having a stay and any number of cores made integral with the stay. The armature assembly is held by virtue of the stay at a preselected location inside an interval defined between field magnet arrays and, therefore, is small and compact in height in transverse section. A bed formed in an angled hook-like configuration in a transverse section contributes to shrinkage of the sliding system in either of height and width in transverse section or most compactness of the sliding system in transverse dimension. Moreover, the bed can be selected in length at discretion according to the purpose of usage to provide any desirable stroke length for a single table of a preselected length, getting the sliding system convenient for usage.

A wheeled ambulatory aid for mobility and training which is advanced via bodily contact. Reciprocating UE movement is enabled and reciprocating gait patterns can be performed. The patient mobility aid includes a frame, and at least first and second wheels operatively secured to and supporting the frame for selective rolling movement. First and second support assemblies are located on first and second sides of the frame, respectively. A reverse motion linkage operatively associated with the first and second support assemblies, the reverse motion linkage including a first state configured to provide independent between the first and second support assemblies, and a second state configured to provide interrelated movement between the first and second support assemblies to create symmetrical out of phase reciprocating UE movement. Support assemblies can variably be statically positioned.

A ship hull structure includes a main hull and a movable rearbody having an engine and a propeller. The movable rearbody is located at a lower side of a stern of the main hull, connected with an aft of the main hull to form an integral unit by a hinge linking device allowing the rearbody to pivot up and down. By a block, a crane or a winch and through a chain or a hanging wire, a pivoting angle of the movable rearbody with respect to the main hull can be adjusted and controlled. A bottom of the hull can be provided with at least one, usually plural, air cushion recess, which is filled with pressurized air to reduce a viscous force between a bottom of the ship and water. When a ship of this kind of structure is sailing, the rearbody can be lifted up by the block or the winch, allowing part of the propeller to be separated from a water surface to reduce resistance in the water that the engine can achieve a required rotational speed (RPM) in a short time. Next, the rearbody is laid down slowly, allowing the propeller to be put into the water, thereby increasing propulsion and quickly achieving a cruising speed. When the ship is sailing and encounters with wind wave, the stern will ascend by longitudinal pitching; at this time, the rearbody can descend by its own weight, with a hinge axis as a center, preventing the propeller to leave the water surface to rotate idly. On the other hand, when a bow ascends (that is, the stern descends), the rearbody will maintain a normal draught height by buoyancy of the water and the force between the water and running propeller Therefore, for the entire ship, a wetted surface area of the propeller can be adjusted automatically to keep at a best sailing condition, which can further save fuel consumption significantly. In another embodiment that the bottom of the ship is formed with the air cushion recesses, a friction force of the water can be reduced to increase a ship speed by the air cushion effect formed at the bottom of the ship.

A position-control stage system is disclosed, which may ensure much space to install the armature assembly on the bed, even with small in dimension. Correspondingly, the position-control stage system itself is made high in propulsion and efficient in operating performances including high-speed traveling, high response, high-precision position-control, and so on, even with compact or slim in construction. Armature windings to provide an armature assembly are made of three-phase coreless windings wound in annular flat configuration, and disposed on the bed radially outside of a rolling-contact bearing in a way closely adjacent to the bearing. Magnets to provide a field magnet array are each made in a segment, and disposed on the turntable in opposition to the armature windings in a way alternating in polarity circularly on a desired circular surface.

A pseudo-frustoconical shaped unitary rubber end unit for an ambulatory device, such as a cane, comprising, a bottom hexagonal base and a top circular rim, wherein said base is about four times the diameter of said rim and functions to provide significantly enhanced support and stability; and a central cylindrical “socket” created by six deeply recessed side walls and a resultant six member rib-like frame that functions to optimize device's shock absorption capabilities and forward propulsion of the user. The hexagonal base may be asymmetrical or symmetrical, and the ribs may be of uniform or non-uniform dimensions. The hexagonal base and the rib-like frame act synergistically to compress and rebound under loads creating a twisting “spring assist” action that both absorbs shock and helps propel users forward. The broad base has a slightly recessed underside permitting the mobility device to be self-standing.

An apparatus and method for balancing the emission current of neutralizers in ion thruster arrays is disclosed that allows a single power processing unit (PPU) to be used to drive the array. A typical embodiment includes at least one voltage-regulated power supply, each voltage-regulated power supply for driving a common element in each of the plurality of ion thrusters, the common element in each of the plurality of ion thrusters being coupled together at a common point, and a current balance circuit for providing a substantially balanced current to each neutralizer cathode of the plurality of ion thrusters by providing a voltage to the neutralizer cathodes relative to the common point.

A telescopic type hyper-redundance series-parallel connection variable stiffness swinging and propelling device comprises a head portion, a redundant drive parallel connection mechanism and a tail fin, and the redundant drive parallel connection mechanism comprises a plate spring spine, supporting legs, flexible hinges, a first stage parallel connection mechanism upper platform, a first stage parallel connection mechanism lower platform, a second stage parallel connection mechanism upper platform, a second stage parallel connection mechanism lower platform, a third stage parallel connection mechanism upper platform, a third stage parallel connection mechanism lower platform, a fourth stage parallel connection mechanism upper platform, a fifth stage parallel connection mechanism upper platform, a sixth parallel connection mechanism upper platform and a seventh parallel connection mechanism upper platform; the center of each platform is fixedly connected with the plate spring spine; the eight flexible hinges are uniformly distributed on each platform, and the flexible hinges of the upper platform and the flexible hinges of the corresponding lower platform are connected with the supporting legs; the first stage parallel connection mechanism and the fourth stage parallel connection mechanism form a first set of parallel connection mechanism, the second stage parallel connection mechanism, the fifth stage parallel connection mechanism and the seventh parallel connection mechanism form a second set of parallel connection mechanism, the third parallel connection mechanism and the sixth parallel connection mechanism form a third set of parallel connection mechanism, and the three sets of parallel connection mechanisms are staggered with one another and telescoped. The device has the advantages of being high in thrust, continuous in movement and good in flexibility.

An apparatus and method for balancing the emission current of neutralizers in ion thruster arrays is disclosed that allows a single power processing unit (PPU) to be used to drive the array. A typical embodiment includes at least one voltage-regulated power supply, each voltage-regulated power supply for driving a common element in each of the plurality of ion thrusters, the common element in each of the plurality of ion thrusters being coupled together at a common point, and a current balance circuit for providing a substantially balanced current to each neutralizer cathode of the plurality of ion thrusters by providing a voltage to the neutralizer cathodes relative to the common point.

Systems, methods, and devices are provided for assisted takeoff of an aerial vehicle. The aerial vehicle may takeoff using a first control scheme and switch to a second control scheme for normal flight when a takeoff threshold is met. The first control scheme optionally does not use integral control while the second control scheme may use integral control. The aerial vehicle may determine that a takeoff threshold is met, based on an output to a motor of the aerial vehicle and / or an acceleration of the aerial vehicle.

The invention discloses a traveling chassis of a submarine mining vehicle. The traveling chassis comprises a vehicle body bracket, a crawler bracket and two traveling crawlers, wherein the two traveling crawlers are arranged at the two sides of the crawler bracket; a plurality of long toothed plates are arranged on the traveling crawlers at intervals; a plurality of short toothed plates are arranged between the adjacent long toothed plates at intervals; each long toothed plate is higher than the corresponding short toothed plate; each long toothed plate is vertical to the grounding surface of the traveling crawler, and an acute angle is formed between each long toothed plate and the traveling direction of the corresponding traveling crawler. The traveling chassis of the submarine mining vehicle has the advantages that the pushing property is good, the slippage rate is low, the energy consumption is low, the traveling chassis is suitable for deep-sea thin and soft bottom environments, and the like.

A watercraft with at least one onboard propulsion engine includes at least two hulls and a wing-like deck structure spanning the two hulls (a floating wing). Port and starboard skirts combine with the deck structure to form port and starboard planing channels. The deck structure includes an upwardly facing surface that slopes downwardly toward an aft end of the deck structure in order to provide aerodynamic lift. Preferably, a speed-responsive exhaust proportioning system vents exhaust at vertical steps in planing surfaces on the hulls to reduce drag, increase lift, and reduce thermal signature. One embodiment includes hinged laterally extending deck extensions that an operator can raise to reduce vessel breadth during docking, upwardly extending barriers on the deck extensions that reduce the escape of wind laterally, and hinged flap structures disposed rearwardly that enable an operator to adjust vessel trim.