46results about How to "Lower relative altitude" patented technology

According to this process, there is supplied to the passengers a first fraction of air enriched in oxygen from independent supply elements, in particular high pressure cylinders (16), during a descent phase of the aircraft between a normal cruising altitude and an intermediate re-routing altitude. There is moreover compressed air taken from a source of compressed air belonging to the aircraft, to produce (in 2) a second fraction of the air enriched in oxygen which is delivered to the passengers, at least during a phase of stabilized flight of the aircraft, adjacent the re-routing altitude, greater than 5,500 meters.

An optical collector with multi-section circular arc relates to an optical collector utilizing solar energy, particularly a linear focusing reflecting type optical collector. The optical collector comprises a receiver (1), a reflector with multi-section circular arc (2) and a bracket (3), wherein the receiver (1) is above the reflector with multi-section circular arc (2) and is in the position ofthe focal line formed by the reflector with multi-section circular arc (2). The bracket (3), under the reflector with multi-section circular arc (2) is for fixing the reflector with multi-section circular arc (2) and extends out a supporting rod from the gap of the reflector with multi-section circular arc (2) to support the receiver (1). By adopting the reflecting type linear optical collector, the problems of the refracting type optical collector, that the cost is high, the size is difficult to amplify, the optical efficiency is limited by index of refraction, etc., can be solved. The reflector with multi-section circular arc instead of the parabolic reflector can obviously decrease the processing difficulty and manufacturing cost and also can decrease the mounting difficulty and promotethe concentrating ratio.

A method for aiding a helicopter pilot to avoid a heat seeking missile includes the step of detecting a threat from a missile. The method also includes the step of reducing heat emanating from the helicopter's engine and rapidly reducing altitude. Then, when the threat has passed flight is resumed. A system for accomplishing the above is also described which simultaneously reduces engine temperature, deflects the exhaust gases, injects water into the exhaust gases, reduces altitude and launches a countermeasure.

The invention discloses a method for setting up an end-mining and withdrawal roadway for a fully mechanized coal mining face with large mining height. The method is used for improving the coal wall stability and increasing the coal recovery rate at the final end-mining stage on the fully mechanized coal mining face with the large mining height. According to the method, when a coal mining machine is adopted to advance the fully mechanized coal mining face to a position 15 m-25 m away from a stopping line, a roof of the fully mechanized coal mining face is supported with anchor bolts, anchor cables, a metal net and steel wire ropes while the mining height of the fully mechanized coal mining face is reduced, a hydraulic support stops moving when the fully mechanized coal mining face is advanced to a position 3 m-6 m away from the stopping line, the slope of the fully mechanized coal mining face is expanded to the stopping line by the coal mining machine to form the withdrawal roadway which is wider at the upper part and narrower at the lower part, and the coal wall side is step-shaped. The method is applicable to the fully mechanized coal mining face with intense coal wall caving, poor stability and the low coal recovery rate at the final end-mining stage of the fully mechanized coal mining face with the large mining height.

The invention provides a knob-button type electronic shift control mechanism with M+ and M- gears. The electronic shift operation at least including P, R, N, D, M, M+ and M- positions is achieved through combination of a button and a knob, and the required arrangement space of the electronic shift control mechanism is reduced effectively. The mechanism comprises the knob, a knob body, a vertical moving seat, the button and a circuit board component. Through arrangement of the vertical moving seat, the switching operation of an automatic transmission mode and a manual mode can be achieved, andis very convenient.

A propulsion system for a combined aircraft / spacecraft including: a jet engine having a longitudinal axis defined in a direction from a front end at an air intake to a rear end at a jet exhaust: a front end at an air intake to a rear end at the jet exhaust; a rocket engine having a longitudinal axis defined normal to a rear end at a rocket exhaust; a common engine housing having an elongated shape and wherein the jet engine and the rocket engine are configured substantially coaxially and with respective rear ends facing the same direction when the rocket engine is operated.

The invention discloses a composite multi-layer crucible for induction melting of a bismuth aluminum alloy and a preparation method thereof.The problem in the prior art thata crucible suitable for theinduction melting of the bismuth aluminum alloy does not exist is solved. The composite multi-layer crucible comprises an inner layer crucible, a middle layer crucible and an outer layer crucible which are fixedly connected from the inside to the outside; the inner layer crucible is prepared from 92.5-97.5 parts of cerium oxide, 1.0-2 parts of calcium oxide, 0.5-2.0 parts of bismuth oxide and 1.0-3.5 parts of silicon carbide; the middle layer crucible is made of graphite; the outer layer crucible is prepared from 90-95 parts of calcium oxide, 1-3 parts of magnesium oxide, 2-4 parts of ceriumoxide, 1-1.5 parts of zirconiaand 0.5-1.5 parts of clay. The composite multi-layer crucible has a high strength structure, can shield a considerable portion of an induced magnetic field, has stable chemical properties, and has no splashing phenomenon in the smelting process, the degree of oxygenation is low, some single-layer structures can be replaced and can be reused, and the service life is long.

The invention discloses a dry powder filling gradual detection device and method. The dry powder filling gradual detection device comprises a rotary base, a filling mechanism, a powder weighing mechanism, multiple groups of supporting and detecting assemblies and a control device, wherein the filling mechanism comprises a supporting rod, a first servo motor and the like; the supporting rod penetrates through a rotating disc and is fixedly connected to a support base, a stator of the first servo motor is fixedly connected to the upper end of the supporting rod, a rotor of the first servo motor is coaxially and fixedly connected to a worm, the worm is sleeved with a charging barrel, and the head end of the charging barrel is fixedly connected to the stator of the first servo motor; the tail end of the charging barrel is rotatably connected to the worm; a feeding bin and a discharging bin are arranged at the upper end and the lower end of the charging barrel respectively, a storage bin is slidably connected to the lower end of the discharging bin, a rack is fixedly connected to the side wall of the storage bin, a second servo motor is fixedly connected to the side wall of the discharging bin, a rotor of the second servo motor is meshed with the rack through a gear, and a powder weighing mechanism is hinged to an opening in the lower end of the storage bin. Through cooperation of the rotating base and the multiple groups of supporting and detecting assemblies, the whole continuous production mode of filling, sealing and detecting can be guaranteed.

The embodiment of the invention discloses a package method and a package structure for a fingerprint identification chip. The package method comprises the following steps: providing a substrate; trepanning the substrate to obtain a target hole; fixing the fingerprint identification chip in the target hole, making the third face of the fingerprint identification chip face to the same direction as the first face of the substrate, wherein the third face and the first face are located on the same plane, and the third face is provided with an induction area and a chip bonding pad; welding a substrate bonding pad with the chip bonding pad to form an electric connection, wherein the substrate bonding pad is located on the first face of the substrate; and plastic packaging the fingerprint identification chip. The embodiment of the invention further provides a package structure for the fingerprint identification chip. According to the package method disclosed by the invention, the fingerprint identification chip is embedded in the target hole of the substrate, and the chip bonding pad and the substrate bonding pad are located on the same plane, so the electric interconnection of the chip bonding pad and the substrate bonding pad can be realized by the welding process to reduce the cost, and solve the problem of large occupancy space of the trepanning process.

A cloud of small to medium-sized space debris is mitigated by releasing drag-reducing particles into the cloud from a dispenser vehicle, causing the particles to collide or otherwise interact with, and thereby exchange momentum with, the debris particles, reducing the orbiting velocity of the debris to a degree sufficient to cause the debris to de-orbit, or to accelerate the de-orbiting of the debris, to Earth. Certain embodiments also include a shepherd vehicle containing systems for identifying and tracking the debris cloud and for coalescing the debris cloud to increase the particles density in the cloud.

An altitude simulation assembly for an environmental chamber includes: at least one ambient air inlet; an air compressor downstream of said ambient air inlet for compressing the ambient air; at least one gas separation means downstream of the air compressor for separating the compressed air into hypoxic gas and hyperoxic gas; and, at least one fluid flow control means in fluid communication with the at least one gas separation means, for controlling the flow of hypoxic gas and hyperoxic gas to the environmental chamber. The at least one fluid flow control means is in fluid communication with at least one outlet port for supplying hypoxic gas from the gas separation means to the at least one outlet port, and hyperoxic gas from the gas separation means to the at least one outlet port. The fluid flow control means controls the oxygen concentration of gas to the environmental chamber.

The invention discloses a telescopic belt conveyor. The conveyor comprises a telescopic machine frame and a driving device, wherein a telescopic section at the outermost side in the stretching state of the telescopic belt conveyor is a front-end telescopic section; the front end telescopic section is composed of two sections of telescopic joints, wherein one end of the first telescopic joint is connected with the second telescopic joint through a rotation supporting mechanism, and the other end of the first telescopic joint is nested in the telescopic section of the next section; and the second telescopic joint is longitudinally rotated around the first telescopic joint, is supported by the rotating supporting mechanism and positioned at a rotating position. The second telescopic joint canrotate downwards around the first telescopic joint, and the relative height of the telescopic machine frame and the ground or the bottom surface of the cargo compartment is reduced, the labor intensity of workers is reduced, meanwhile, accidental injuries possibly caused in the cargo lifting process are avoided; and meanwhile, when the telescopic belt conveyor is not used, the second telescopic joint can be lifted to be in a horizontal position with the first telescopic joint, the second telescopic section is driven by the first telescopic joint to retract into the telescopic section of the next section, and the space is not occupied.

A method of assisting the piloting of an aircraft (60) at low altitude over terrain (S), in which method, during a first stage, a framework (10) is constructed from at least one main segment (40) and during a second stage a setpoint flight path (50) is constructed. More precisely, during the first stage, said main segment (40) is subdivided automatically into a plurality of secondary segments (41, 42, 43), each of said secondary segments (41) being situated at the same setpoint height above the highest point of the underlying terrain, with two adjacent secondary segments (41) being in alignment or connected together by a bar (44) that extends vertically in a vertical section.

The invention discloses a ground simulation method for a two-phase fluid circuit for a patrol device. The method is to adjust the liquid storage, evaporator and steam pipeline on the basis of maintaining the connection relationship of each part in the two-phase fluid circuit: the storage The cross-sectional area A of the liquid container is increased to 6A; the evaporator is moved up vertically and fixed on the side plate of the patrol device, so that when the control valve is closed, the adjusted liquid level distance of the liquid working medium in the liquid container evaporates In the two-phase fluid circuit, H at the bottom of the receiver is the height of the liquid working medium in the receiver from the bottom of the evaporator before the control valve is opened; keep the length of the steam pipeline, and ensure that the steam on the top plate of the inspector Under the condition that the height of the pipeline from the top plate of the inspector remains unchanged, the part of the steam pipeline is adaptively bent and deformed.

A liftable keyboard for a portable electronic device is provided. The portable electronic device includes a top cover and a base. The liftable keyboard includes a key unit, a membrane switch circuit layer, a vent valve and a pump. The key unit includes a keycap and an elastomer. The vent valve includes an inlet, an outlet and a gas exhaust chamber. The inlet and the outlet are in communication with a gas-inputting port and a gas-outputting port of the membrane switch circuit layer, respectively. The gas exhaust chamber is in communication with the pump. When a sensing element of the base senses that the top cover is close to the base, the pump is enabled to perform a gas-extracting action. The elastomer is subjected to compressed deformation and the keycap is moved downwardly. Consequently, an altitude of the key unit is reduced.

A stand for a drying gun supporting frame includes a body and a socket at 90 degrees to the body. A spherical valve is disposed in the body, and a connecting unit is provided at the top of the body. The socket has a threaded hole at one side to receive a manual screw therein so as to secure a balancing pipe thereat. The spherical valve disposed in the body comprises a ball, washers, a cap and a linking rod. The altitude of the spherical valve is lower than the center of the balancing pipe, which lowers the outlet of the drying gun and provides a steady operation of the drying gun.

Aspects of the disclosure relate to flight termination systems for aerial vehicles having envelopes. For instance, a flight termination system may include one or more heat sources mounted on the top plate and oriented towards envelope material of the envelope. The one or more heat sources may each include a gas generator configured to generate gas of sufficient temperature to melt the envelope material and vent lift gas from the envelope. The flight termination system may also include a drag device arranged at the top plate which may be being configured to provide stability to the envelope during descent.

The invention discloses additive manufacturing smelting equipment, and relates to the technical field of additive manufacturing. The additive manufacturing smelting equipment specifically comprises a bottom box base, a smelting device installed in the middle of the top of a square base plate, an L-shaped baffle installed on the top of the square base plate and located on the back face of the smelting device, a protective top plate installed on the top of the L-shaped baffle, a high-frequency coil installed at the bottom of the protection top plate, a smoke device installed at the top of the protection top plate, a rail limiting plate installed on the right side of the protection top plate, and a lifter installed on the inner wall of an L-shaped baffle and located in an inner cavity of the rail limiting plate. According to the additive manufacturing smelting equipment, the high-frequency coil is arranged to conduct high-frequency eddy current heating on the whole component, heat of a heating part is concentrated, the rapid smelting efficiency of the high-frequency coil is improved, meanwhile, the high-frequency coil can limit the heat dissipation direction, heat is prevented from being transmitted to the components around the smelting device, and the situation that the components are damaged due to thermal fatigue of the components is avoided.

The invention discloses a pension bed with an auxiliary get-up structure and a use method of the pension bed. The pension bed comprises a bed body mechanism, a control mechanism, a supporting mechanism and an air pump, wherein the control mechanism is arranged on the bed body mechanism; the supporting mechanism is arranged at the lower end of the bed body mechanism; and the air pump is installed on one side of the supporting mechanism. The pension bed further comprises adjusting mechanisms capable of assisting old people in getting up and turning, a guardrail mechanism used for protecting thesafety of old people and a power mechanism used for providing power for the adjusting mechanisms. The pension bed is reasonable in structure; the safety of old people on the inner side of the bed canbe effectively protected by using the bed body mechanism and the guardrail mechanism; through the cooperation of the adjusting mechanisms and the power mechanism, the center can be guaranteed when oldpeople lie on the bed, the danger of falling is avoided, and meanwhile, auxiliary body turning force can be provided after old people get up to assist old people in turning; and through the cooperation of the multiple split adjusting mechanisms and the supporting mechanism, the practicability of the pension bed in getup and other adjusting capabilities is improved.

A liftable keyboard for a portable electronic device is provided. The portable electronic device includes a top cover and a base. The liftable keyboard includes a key unit, a membrane switch circuit layer, a vent valve and a pump. The key unit includes a keycap and an elastomer. The vent valve includes an inlet, an outlet and a gas exhaust chamber. The inlet and the outlet are in communication with a gas-inputting port and a gas-outputting port of the membrane switch circuit layer, respectively. The gas exhaust chamber is in communication with the pump. When a sensing element of the base senses that the top cover is close to the base, the pump is enabled to perform a gas-extracting action. The elastomer is subjected to compressed deformation and the keycap is moved downwardly. Consequently, an altitude of the key unit is reduced.

The invention discloses a water treatment device with combination of sand filtration and ozonation and activated carbon. The water treatment device at least comprises a first filtering device, a second filtering device and a backwashing pump house, wherein the first filtering device and the second filtering device are respectively communicated with the backwashing pump house; the first filtering device consists of a first sand filtration pool, a first lift pump house, a first ozone contact pool and a first activated carbon filtration pool, the first sand filtration pool is communicated with the first lift pump house by virtue of a water collecting channel and is communicated with the backwashing pump house by virtue of a backwashing pipe gallery, and the first ozone contact pool which is communicated with the first activated carbon filtration pool is respectively communicated with the first lift pump house and the backwashing pump house by virtue of exposed pipelines. According to the water treatment device disclosed by the invention, as the two sets of filtering device share one backwashing pump house, and the sand filtration pool and the ozonation and activated carbon filtration pool are used in a combination mode, the water treatment device has the beneficial effects of good treatment effect, compact structure and long service life of equipment.

The invention discloses a base of a floor air conditioner. The base comprises a bottom disc, a supporting pier and a tray, wherein the two ends, in the first direction, of the bottom disc are provided with a first fixed structure and second fixed structures correspondingly; the supporting pier is arranged between the first fixed structure and the second fixed structures, the outline dimension, in the first direction, of the supporting pier is smaller than the outline dimension, in the second direction, of the supporting pier, and every two of the first direction, the second direction and the up-down direction are perpendicular to each other; the tray is arranged at the top end of the supporting pier, and the two ends, in the first direction, of the tray protrude from the supporting pier; and in the first direction of the tray, the supporting pier and the bottom disc, a first installation tank connected with the first fixed structure and a second installation tank connected with the second fixed structures are defined by the two sides of the supporting pier. According to the base of the floor air conditioner, the utilization rate of the inner space of the floor air conditioner is increased.

The invention provides a secondary reflection light gathering and heat collecting device with a compound curved surface, which relates to a solar slot type light gathering and heat collecting device and comprises a heat collecting tube (1), a plane primary reflector (2), a refracting plane secondary reflector (3), a compound circular arc primary reflector (4), a compound paraboloid secondary reflector (5) and a supporting frame (6), wherein the heat collecting tube (1) comprises two parallel heat collecting tubes and is positioned in the compound paraboloid secondary reflector (5), and the supporting frame (6) is positioned below the compound circular arc primary reflector (4) and used for fixing the compound circular arc primary reflector (4). By adopting the design of combination of onesupporting frame and two heat collecting tubes, the cost and the height of the heat collecting device can be remarkably reduced; by adopting the compound paraboloid secondary reflector, the requirement on the tracking accuracy is reduced; by adopting the compound circular arc primary reflector, the degree of freedom of the design is increased; and by adopting the design of combination of the planereflector and the refracting plane, the utilization ratio of the light energy is improved.

The invention aims to provide a steering five channel system testing stand safety guard, used for a steering five channel system testing stand so as to improve clamping efficiency and operation safety. The safety guard comprises a support bench, a fixing block used for fixing the support bench to the base of a steering five channel system testing stand, and a step stool having the height lower than the height of the support bench. The support bench is composed of support bars and an upper shoe plate, wherein the top ends of the support bars are in fixed connection with the upper shoe plate, and the bottom ends of the support bars are in fixed connection with a fixing plate; the fixing plate is provided with an installation through hole; the cross section of the fixing block is in a T shape of a smaller upper part and a larger lower part , and the fixing block is provided with a screw vertically penetrating the fixing block; the fixing plate is fixed to the base of the steering five channel system testing stand by successively penetrating the fixing plate installation through hole, the steering five channel system testing stand base and the bolt of the fixing block screw.

A chip package structure includes a carrier board and a chip. The carrier board has a substrate, a plurality of first conductive pads mounted on an upper surface of the substrate and arranged around a concavity of the substrate, and a solder mask applied to the substrate and provided with a plurality of openings each exposing a portion of one respective first conductive pad. The chip is received in the concavity and attached to the carrier board through a bonding adhesive and provided with a plurality of second conductive pads electrically connected to the first conductive pads of the carrier board through a plurality of wires. By means of the concavity, an overflow of the bonding adhesive is avoided, and the overall package size is reduced.

The invention discloses a telescopic belt conveyor. The telescopic belt conveyor comprises a telescopic frame and a driving device; a telescopic section at the outermost side of the telescopic belt conveyor in an extending state is a front telescopic section; the front telescopic section consists of two telescopic joints, wherein one end of a first telescopic joint is connected with a second telescopic joint by a rotary supporting mechanism; the other end of the first telescopic joint is embedded in the next telescopic section; the second telescopic joint longitudinally rotates around the first telescopic joint and is supported and located at a rotating position by the rotary supporting mechanism. In the telescopic belt conveyor disclosed by the invention, the second telescopic joint can rotate downwards around the first telescopic joint; the relative height of the telescopic frame and the ground or the bottom surface of a cargo compartment can be reduced; the labor strength of a worker can be alleviated; meanwhile, accidental injury which may be caused in a lifting process of goods can be prevented; simultaneously, when the telescopic belt conveyor is not in use, the second telescopic joint can be lifted up to a position horizontal to the first telescopic joint and can retract into the next telescopic section under driving of the first telescopic joint, so no space is used.