61results about How to "Increase maximum speed" patented technology

The invention relates to a repeating aircraft catapult which is a device for supplying power for aircraft in short distance on land, warships and aircraft carrier decks. The repeating aircraft catapult comprises a first-level acceleration main shaft, a second-level acceleration main shaft, a transmission shaft, an acceleration spiral orbit, a deceleration spiral orbit, a counterweight spiral orbit, a change gear, a rotary power source, an acceleration orbit, a main shaft positioning wheel, a transmission trolley, a trolley starting hook, a trolley arm, an arm closing spring, a trolley acceleration wheel, a trolley positioning wheel, a trolley pass-back orbit, a pass-back motor, a trolley starting wheel, a starting wheel motor, a starting wheel switch, a pressure switch, an equipment main switch, a main power supply, an equipment steel skeleton, a bearing or bearing bush, an electromagnet and the like. The repeating aircraft catapult can accelerate 40-ton aircraft to 80 m/s in 105-m distance within 5 s. The invention has the characteristics of less auxiliary equipment, simple maintenance and mature power equipment technology, can adopt gas engines, steam turbines and the like, and can continuously accelerate aircraft take-off.

The invention discloses an adaptive continuously-adjustable cavitation device structure. The adaptive continuously-adjustable cavitation device structure comprises a benchmark chassis, a rotatable telescopic assembly and a drive mechanism assembly which are connected with one another, wherein the benchmark chassis and the rotatable telescopic assembly rotate under the power drive action of a servomotor, and the diameter of an outer edge formed by multiple layers of sector part groups in rotating is continuously adjustable along with rotation changes of the servo motor. In the variable speed sailing process of an underwater sailing body, the adaptive continuously-adjustable cavitation device structure provides power through the drive mechanism assembly to drive the multiple layers of sector part groups of the rotatable telescopic assembly to synchronously expand outward or contract inward, and adjusts the drive mechanism assembly according to change situation feedback of hydrokinetic parameters of an external flow field of the sailing body so as to realize adaptive change of the diameter of a cavitation device, thereby completing control for the size and the form of vacuoles, decreasing the wetting area of the underwater sailing body and reducing pressure difference resistance additionally caused to the utmost, greatly reducing frictional resistance and total resistance, and greatly improving the maximum speed and sailing distance of the sailing body.

A watercraft device includes a central body and of two lateral hulls. Each lateral hull is connected to a central body by at least one connecting arm, so that the central body is in a raised position relative to two lateral hulls, the connecting arms having a given inclination to the vertical plane of the watercraft device. The two lateral arms and the central body are oriented with their longitudinal axes, i.e. the bow to stern axes, parallel to each other. Each of the two lateral hulls includes a body having a substantially cylindrical symmetry, with an annular constriction between the fore and the aft main sections of the lateral hulls.

An elevator control system which changes the maximum speed and the acceleration of a cage according to a load weight in the cage, and which comprises a motor control unit controlling the operation of a motor unit according to a load weight in the cage and a unit for detecting the abnormality of the elevator. When an abnormality is detected by the abnormality detecting unit while the cage is operated at the maximum speed and an increased acceleration, the operation mode of the motor control unit is switched from a normal-time mode to an abnormal-time mode.

A light-weight high-speed large-load lower limb exoskeleton robot solves the problems that when driven by hydraulic cylinders, an existing exoskeleton robot is not compact enough and is low in torque when rotating by an angle. Two hip joints are symmetrically arranged on the two sides of a rear back plate. Outer-stretching and inner-bending joint rods on the two hip joints are hinged to a waist binding plate through connecting shafts. The two hip joints, two thighs, two shanks and two foot parts correspond one to one from top to bottom. Bending and stretching joints on the hip joints are connected with hip joint hydraulic cylinder supporting covers on hip joint hydraulic drive parts through connecting elements. The lower ends of hip joint hydraulic cylinders are fixedly connected with the shanks. The upper ends of knee joint hydraulic cylinders are fixedly connected with third inner and outer rotary joint rods on the hip joints. Knee joint hydraulic cylinder supporting covers are connected with knee joint rotary connecting pieces on the shanks through connecting elements. Knee joint shells on the shanks are connected with the foot parts. The robot is used for load-carrying walking and can be used for rescue relief and other occasions where goods and materials need to be transported.

An outboard motor includes a variable speed mechanism portion arranged to transmit a driving force to propellers such that the driving force is changed in its speed by a low reduction ratio and a high reduction ratio, an upper housing that houses the variable speed mechanism portion, oil tanks provided on the outside of the upper housing and arranged to retain oil to be supplied to the upper housing, and an oil lubrication route arranged to supply oil in the oil tanks to the upper housing and to collect the oil supplied in the upper housing in the oil tanks. The above arrangement provides a boat propulsion unit capable of allowing both a performance of acceleration and a maximum speed to approach a level desired by a user and to prevent the occurrence of a loss of the driving energy of an engine.

A method and apparatus is disclosed wherein nanostructures or microstructures are disposed on a surface of a body (such as a submersible vehicle) that is adapted to move through a fluid, such as water. The nanostructures or microstructures are disposed on the surface in a way such that the contact between the surface and the fluid is reduced and, correspondingly, the friction between the surface and the fluid is reduced. In an illustrative embodiment, the surface is a surface on a submarine or other submersible vehicle (such as a torpedo). Illustratively, electrowetting principles are used to cause the fluid to at least partially penetrate the nanostructures or microstructures on the surface of the body in order to selectively create greater friction in a desired location of the surface. Such penetration may be used, for example, to create drag that alters the direction or speed of travel of the body.

A propulsion system for a boat includes propellers rotated by an engine, a transmission mechanism arranged to transmit a driving force of the engine to the propellers in a state that the driving force of the engine is changed to at least one of a gear reduction ratio for low speed and a gear reduction ratio for high speed, and a control unit arranged to output a signal to control a gear shift in the transmission mechanism on the basis of a throttle valve opening of the engine and a speed of the engine and arranged to detect cavitation generated in conjunction with rotation of the propellers on the basis of a gear shift control map. The control unit is arranged to control the output of a signal to the transmission mechanism to change the high speed reduction gear ratio when cavitation is detected. The propulsion system achieves both acceleration and maximum speed at performance levels desired by an operator of a boat.

A sealed bearing assembly includes seal members each including a seal lip formed with multiple protrusions, and arranged such that oil passages are formed between the seal lip and a seal sliding surface which slides circumferentially relative to the protrusions such that the oil passages communicate with the bearing internal space and the exterior of the bearing, and prevent passage of foreign objects having particle diameters larger than a predetermined value therethrough. The seal lip and the seal sliding surface are arranged such that when the bearing rotates, lubricating oil in the oil passages are pulled into the spaces between the seal lip and the seal sliding surface such that fluid lubricating condition is created between the seal lip and the seal sliding surface, due to the wedge effect.

The invention discloses a woven fabric cleaning and drying device and relates to the technical field of textile equipment. The device comprises a support, wherein a driven wheel is rotationally connected to the bottom of the support, a driving wheel is rotationally connected to the top of the support, and a conical screw is in threaded connection with the middle of the driving wheel. According tothe woven fabric cleaning and drying device, through matched use of a slider and a piston rod, when the driving wheel rotates too fast, sliders can be thrown away to the outer side under the action ofcentrifugation force, rubber blocks on the outermost sides of the slider and the inner side of the support are in sliding friction, so that the driving wheel slows down, the driving wheel and woven fabric move together again, and the speed can be regulated and limited by adjusting the conical screw; when the conical screw moves to the front side, the piston rod moves outwards, gas is squeezed into air bags, the air bags swell, friction force between the air bags and the inner wall of the driving wheel is increased, the maximum speed for throwing away is increased, the function of changing theanti-slip interface is achieved, the anti-slip practicability is improved, and the production efficiency is improved.

A propulsion system for a boat includes propellers arranged to be rotated by an engine, a transmission mechanism arranged to transmit driving force of the engine to the propellers such that a speed of the driving force of the engine is changed at least with a gear reduction ratio for low speed and high speed, and a control unit arranged to output a signal to control a gear shift in the transmission mechanism on the basis of an amount of lever opening, which is based on operation of a control lever section, and speed of the engine, and the control unit being arranged to detect cavitation generated in conjunction with rotation of the propellers on the basis of a gear shift control map. The control unit is arranged to control output of a signal to the transmission mechanism for changing a reduction gear to that for high speed when cavitation is detected.

A method of checking a toe angle of at least one port rudder (1) and at least one starboard rudder (2) of a ship, which are electronically adjusted via a control device, such that different toe angles are set for the at least one port rudder (1) and the at least one starboard rudder (2) and from which an optimal toe angle is determined, in real time, for each of the at least one port rudder (1) and the at least one starboard rudder (2).

The invention provides a lift control device. In the lift control device, the maximum speed and accelerated speed of a lift car are changed according to the load capacity in the lift car. A motor control part and an abnormal detection part for detecting lift exception are arranged in the lift control device, wherein the motor control part controls a motor part to operate according to the load capacity in the lift car. When the maximum speed and accelerated speed are accelerated to allow the lift car to operate, and if the exception is detected by the abnormal detection part, the operating mode of the motor control part is changed into an abnormal mode from a general mode.