89 results about "Simulated microgravity" patented technology

The invention provides a six-dimensional position and orientation precision test method of a space mechanical arm based on an air flotation system, relating to a position and orientation precision test method of a space mechanical arm. In order to imitate a microgravity environment so as to test the position and orientation precision of the space mechanical arm at the ground, the method mainly comprises the following steps of: spreading the space mechanical arm and arranging the space mechanical arm on the air flotation system to imitate the microgravity environment; measuring and calculating the transformation matrix of a second target relative to a first target on an installation flange of the mechanical arm; measuring and calculating the transformation matrix of a third target relative at the end of the mechanical arm relative to the second target; combining with the two position and orientation matrixes to obtain a coordinate transformation matrix of an end tool coordinate system E under a mechanical arm installing coordinate system M so as to test the position and the orientation of the end of the space mechanical arm; comparing the tested position and orientation with the theoretical position and orientation to obtain the position and orientation precision of the end of the space mechanical arm. The method imitates and reappears the space microgravity environment with the air flotation system, and guarantees the ground position and orientation precision tested by the developed space mechanical arm.

The invention provides a device of a material sample solidification test for simulating a microgravity environment. The device comprises a vacuum vessel (1), an electrostatic suspension control and release device (2), a heater (3), a temperature measuring instrument (4), a short drop pipe (5), a recovery tray (6) and a camera (7), wherein the vacuum vessel (1) is a vacuum closed vessel; the electrostatic suspension control and release device (2) is arranged on top inside the vacuum vessel (1) and is used for controlling a material sample to stay in a suspension state or a dropping state; the material sample drops into the recovery tray (6) through the short drop pipe (5), and the recovery tray (6) is arranged on the bottom of the vacuum vessel (1); the heater (3), the temperature measuring instrument (4) and the camera (7) are arranged outside the vacuum vessel (1), and the heater (3) is used for heating the sample to be in a molten state; the temperature measuring instrument (4) is used for measuring the temperature of the material sample; the temperature measuring instrument is connected with the electrostatic suspension control and release device (2) through a signal wire.

The invention relates to an autonomous landing navigation control ground test verification system under a small celestial body (asteroid and comet) microgravity environment and belongs to the technical field of ground semi-physical simulation. The autonomous landing navigation control ground test verification system under the microgravity environment specifically comprises a small celestial body surface topography simulation part, a base part, a lander mounting platform and an external measurement part, wherein the lander mounting platform comprises a mounting platform body, multiple flotation air legs, one small-thrust nozzle, wherein the multiple flotation air legs are fixed at the bottom of the mounting platform body in a regular polygon shape, so as to realize a high-pressure air cushion, so that frictionless motion is realized; the small-thrust nozzle is arranged in the inverse direction of to-be-simulated microgravity and used for generating a thrust so as to serve as the microgravity borne by a lander; the external measurement part is used for measuring space states such as the position and posture of the lander mounting platform relative to the small celestial body surface topography simulation part. The system can simulate different microgravities by virtue of changing the thrust of the nozzle and has the advantages of simplicity in test, rapidness, and the like.

The invention discloses a culture system for simulating a microgravity effect of suspension cells. The culture system comprises a base, a rotating support, a driving rotating part, an incubator and an observation part, wherein the rotating support is arranged on the base in a rotatable way; the driving rotating part is arranged on the base and is used for driving the rotating support to rotate atthe preset rotating speed; the incubator is arranged on the rotating support and is provided with a cavity for accommodating a cell culture fluid; and the observation part is arranged on the rotatingsupport and is used for observing the state of cells which suspend in the culture fluid in the incubator on line. By arranging the observation part on the rotating support, when the rotating support rotates at the preset rotating speed, the state of the cells which suspend in the culture fluid accommodated in the incubator can be observed on line under the effect of microgravity simulation, so that the on-line observation is realized.

The invention relates to a ground microgravity equivalent experimental device and method of a six-freedom-degree spatial mechanical arm. The equivalent experimental device comprises a bearing device A, a support air foot device B and a roller air foot device C. The bearing device A realizes simulated microgravity environment equivalent motion of joints of the mechanical arm b1, the roller air foot device C supports motion in 3 freedom degrees and rolling motion in one freedom degree of the plane in the simulated microgravity environment of a supported arm rod, and the support air foot device B supports motion in three freedom degrees in the plane in the simulated microgravity environment of the supported joints. The equivalent experimental device is used for test, the motion states of the joints of the spatial mechanical arm and information of sensors and devices on a satellite load installation plate are detected to effectively simulate the work state of the spatial mechanism arm in the weight loss environment on the ground, the problem that a traditional ground simulated experimental device of the spatial mechanical arm is high in interference or few in freedom degree is solved, and influence on other satellite loads and devices in the motion process can be also simulated.

The invention relates to a membrane bioreactor device for the efficient culture of suspended biological cells and in particular relates to a membrane bioreactor used in the microgravity environment and the simulated microgravity environment. The membrane bioreactor is mainly used in the microgravity environment and used as a ground simulated microgravity experimental device to perform the long-term culture of suspended biological cells and the biological effect research and the efficient preparation method research of recombinant protein. The membrane bioreactor comprises a bioreactor main body, an air supply system, a liquid filling system, a stirring system, a parameter measurement and control system, an exhaust system and a sampling system, wherein the parameter measurement and controlsystem comprises a pH value parameter measurement and control system, a temperature parameter measurement and control system, a dissolved oxygen parameter measurement and control system and a pressure parameter measurement and control system. The membrane bioreactor device can be utilized to realize the long-term and efficient culture of suspended biological cells in the microgravity environment and the ground simulated microgravity environment, the multi-parameter real-time detection and the automatic control.

The invention provides a space follow-up system and relates to equipment for carrying out flight testing on aircrafts in microgravity environment. The invention aims at providing the space follow-up system for carrying out flight testing on aircrafts in the simulated microgravity environment. The space follow-up system comprises two vertical support frames (37) and a horizontal support frame (38), wherein the horizontal support frame is fixedly arranged on the two vertical support frames, two second track beams (14) are arranged on the horizontal support frame, a high-speed heavy load running gear synchronous transmission system is arranged above the second track beams, a vertical follow-up system is arranged above the high-speed heavy load running gear synchronous transmission system, the vertical follow-up system is hoisted with a space floating type fast follow-up device through a vertical traction rope (39), a space follow-up constant tension macro micro control system and a target aircraft (40) are sequentially arranged under the space floating type fast follow-up device, and the space floating type fast follow-up device is connected with six space attitude stabilizing systems through horizontal traction ropes (41).

The invention discloses a low-intensity pulse ultrasound-assisted rotary tubular cell / tissue culture system. The Lipus-assisted rotary tubular cell / tissue culture system comprises a culture main body provided with a rotating shaft, wherein an air chamber is sheathed outside the culture main body, the rotating shaft is arranged at both ends of the air chamber, one end of the culture main body is provided with an Lipus ultrasound instrument, the ultrasound transmitting probe of the Lipus ultrasound instrument is inserted into the culture main body, and the inner wall of the air chamber is provided with an oxygen concentration controlling part. The culture system can realize on-line oxygen supply and liquid supply, thereby being beneficial to the transport of oxygen, carbon dioxide and metabolin in the system and being capable of accurately controlling the oxygen concentration. By using the Lipus ultrasound instrument as an auxiliary means, the invention creates a favorable microenvironment for the proliferation or differentiation of cells or tissues, ultimately simulates the micro-gravity environment for carrying out three-dimensional dynamic culture, and can realize functions of oriented amplification and induced differentiation.

The invention discloses a test device for realizing continuous production of fresh plant food under the simulated space microgravity effect, and mainly aims to make a research on the problem of supplying the fresh plant food to astronauts in a long-time and long-distance deep space manned spacecraft (such as a Mars landing spacecraft). The device consists of a trumpet-shaped variable-diameter light shade, a mobile circular planting module, a nutrient solution supplying pipeline and a power rotary unit. By using the device, the test research on high-efficiency continuous growth of different types of fresh plant food (such as leaf vegetables, root-stem vegetables and solanaceous vegetables) under the simulated space microgravity effect can be performed, and the test basis is provided for solving the problems of supplying the fresh plant food to the astronauts and making the astronauts physically and mentally healthy in the deep space manned spacecraft.

This invention provides a method for three-dimensional cartilage tissue engineering by culturing bone marrow cells in a simulated microgravity environment that is realized by a bioreactor such as an RWV.

The invention belongs to the technical field of aerospace medicine and in particular relates to a device for performing a physiological test by simulating microgravity. The technical scheme is that the non-human primate test animal medium and long-term weightlessness simulation model device comprises a device main frame (100), a horizontal body position positioning device, a trunk side inclined angle positioning device, a feeding device (600), a water intake device (700) and a metabolin collecting disc (500), wherein a bed surface outer ring (401) of the horizontal body position positioning device is connected to the device main frame (100) through a connecting shaft (201) and is fixed by a locking handle (203); a bed surface inner ring (402) of the trunk side inclined angle positioning device is connected to the bed surface outer ring (401) through a positioning shaft (303) and is fixed by a locking device; and the metabolin collecting disc (500) is arranged below the device main frame (100). According to the invention, head low-position inclined angle and trunk side inclined angle can be positioned precisely by positioning and locking devices, and various zero-gravity environments can be simulated.

The invention discloses a contact angle measurement device and a contact angle measurement method for a superconducting magnet simulated microgravity environment. A glass window is formed at one end of a closed chamber. A charge coupled device (CCD) observation system is arranged outside the glass window. An injector is fixed in the closed chamber, and a syringe putter of the injector is pushed and drawn by rotating a threaded pushrod. An outlet of the injector is connected with a syringe needle through a connecting hose. An illumination system is arranged at the bottom of the closed chamber. A specimen holder and the syringe needle are sequentially arranged over a light source of the illumination system. A point of the syringe needle is vertical to the specimen holder. Feeding operation for liquid is controlled by the rotation of the threaded pushrod, and appearance grayscale images, which are changed along with time in an advancing, static or receding process, of droplets are captured in real time. The appearance contours of the droplets in each frame of picture are analyzed by using a contact angle analysis method for fitting, a slope is calculated, and an advancing, static or receding contact angle value is calculated. According to the device and the method, solid-liquid dynamic and static contact angles can be accurately measured under a superconducting magnet simulated microgravity condition and a normal gravity condition.

The invention relates to a physical system simulating molten metal droplet 3D printing in a microgravity environment and a printing method. A static electric field generation positive electrode applies a static electric field generation voltage, and a static electric field is generated between two electrodes; and a molten metal spray nozzle is located on one side of the static electric field generation positive electrode. A 3D deposition platform is located at the tail end of the area of the static electric field. When molten melt droplets pass by a charging electrode and then initially enterthe area of the static electric field, the movement direction of the molten melt droplets are in the horizontal state. In the ground environment, through spray of a small bond number of molten melt droplets, accelerated flight (matching of Froude number) and deposition and loading of an antigravity static electric field, physical simulation of the processes of microdroplet spraying, flight and deposition deformation under different microgravity conditions is achieved, and therefore the physical system simulating molten metal droplet 3D printing in the microgravity environment provides an effective means for earlier-stage technology development and later-period formation technology ground verification of the molten metal droplet 3D printing in the microgravity environment.

The invention relates to the field of microgravity air flotation simulation devices, particularly to a four-degree-of-freedom free target microgravity air flotation simulation device. The device includes a plane air foot, a counterweight strut, a free floating target and a magnetic suspension bearing assembly, wherein the magnetic suspension bearing assembly includes a fixed sleeve, a slide bar and a linear bearing; the magnetic suspension bearing assembly is fixedly mounted on the upper end of the planar air foot, the counterweight strut is fixed on the upper end of the magnetic suspension bearing assembly, the free floating target is fixedly mounted on the top of the counterweight strut, and motion of the free floating target on the ground in an analog microgravity environment along four degrees of freedom of three translation directions of X, Y and Z and a rotation direction of Z can be realized. The degree of freedom of motion simulation of the device is higher than a suspension spring method, but disturbing force levels of all directions are close to a planar air foot method and far lower than the suspension spring method, and the device improves the equivalence of a spatial free floating target ground microgravity simulation motion experiment.

The invention discloses a drop tower frictional wear testing device and method. The drop tower frictional wear testing device comprises a load loading mechanism, a static test sample clamping mechanism, a movable test sample clamping mechanism, a friction power device and a rack which is fixedly mounted in a drop cabin of a drop tower, wherein the load loading mechanism, the static test sample clamping mechanism, the movable test sample clamping mechanism and the friction power device are arranged in sequence. The drop tower frictional wear testing device has the advantages of simple structure, relatively high precision, stable structure and strong anti-impact capability; various index designs of the drop tower are completely referred and the device can be mounted in the drop cabin to carry out a micro-gravity drop tower frictional wear testing experiment; a micro-gravity environment can be relatively really simulated and influences, caused by micro-gravity, on frictional wear on the mechanism are explored; the blank of a mechanism frictional wear test under a current real micro-gravity environment is made up and influences, caused by the micro-gravity, on abrasion of a space mechanism are explored better.

The invention provides a rope suspension type astronaut microgravity environment simulation training device and training method. The device comprises a steel wire rope, a simulation load, a cross bar,a handle, a suspension mechanism, a swing mechanism, a force sensor and an angle sensor. The steel wire rope bears all gravity of the training device; the small-diameter steel wire rope is used, thelength of the steel wire rope is increased, and the torsion angle of the training device is controlled to be smaller than 20 degrees, so that the torsional moment of the steel wire rope can be ignoredrelative to the inertia moment of the simulation training device; therefore, the rotating motion effect of the training device around the axis perpendicular to the horizontal plane is equal to the motion effect in the space, an astronaut can change the motion state of the training device by pushing and pulling the handle, and the training task of carrying objects in the microgravity environment can be simulated on the ground.

The invention relates to a microgravity effect ground simulation method based on magnetic-fluid mixed floating. The technical feature is that: based on the buoyancy of liquid, a mixed suspension mode of electromagnetic and liquid floating is used to provide means for accurately simulating space microgravity effects. Among them, most of the gravity of the object is overcome by the buoyancy of the liquid (coarse trim), and the remaining very small part of the gravity is overcome by fine-tuning the electromagnetic force (fine trim), so as to achieve the purpose of precise trim. At the same time, the adjustment of the levitation height of the object under the microgravity effect simulation environment controls the magnitude and direction of the electromagnetic force by controlling the current intensity or other electromagnetic field parameters, so as to realize the arbitrary change of the levitation height and position of the object under the weightlessness effect.

The invention relates to an analog micro weight space crafter land emitting testing device that comprises the bracket, emission barrel, fixture, erecting linear guide track at one side of the bracket, sliding emission platform on the linear guiding track, with the emission barrel fixed on the sliding emission platform through the fixture, with buffer set under the platform. It has imitable analog micro weight environment, being able to finish the traditional land emitting, with instant parameter testing function, integrating the testing device with the emission platform, strong in impact resistance ability.

The invention discloses a system and method of regulation and control of postures and landing experiments for a space robot simulating a gecko, and belongs to the field of robots. The system mainly comprises a rotary landing panel (2), three-dimensional force-sensor array (1) distributed on the rotary landing panel, a robot imitating the gecko, high-speed video cameras, a computer control terminal (18), a force-sensor data acquisition system (19), and a wireless data transmission module (20). Through the system and method disclosed by the invention, the regulated and controlled postures, and the landing experiments of the space robot can be effectively simulated under the microgravity environment, and a novel method for the experiments of posture control and landing collision of the space robot is provided.

The invention discloses a platform and a method for testing flexible surface adhesion movement under simulated microgravity and belongs to the field of robots. Resistance strain gauges (9) in array distribution are pasted uniformly on a testing contact reverse side of a flexible surface (11) of a system. Bending of the flexible surface (11) leads to resistance change of the resistance strain gauges (9), resistance change values of the resistance strain gauges (9) are collected through a sensing data collection system to indirectly measure bending curvature of the flexible surface (11), elasticity modulus of the flexible surface (11) of a material is combined to indirectly measuring bending moment and force of the flexible surface (11) at the position, and bending moment and force values ofeach position of the flexible surface can be acquired through planar distribution positions of the resistance strain gauges (9) on the flexible surface (11). The platform is simple in structure, clear in movement principle and convenient for movement realization.

The invention relates to a novel magnesium alloy composite material preparation method. The novel magnesium alloy composite material preparation method is characterized in that a novel magnesium alloy composite material is prepared through the steps that aluminum, zinc, manganese, neodymium, cerium and magnesium are proportionally mixed, nickel coated nano-SiC particles are added into a magnesium alloy melt, an electromagnetic field is applied at the same time, the nickel coated nano-SiC particles are evenly scattered in the melt through electromagnetism simulated microgravity, an electric field is applied to a casting ingot after pouring to refine grains, and finally the novel magnesium alloy composite material is subject to equal channel angular pressing. The neodymium element in the novel magnesium alloy composite material has the dispersion strengthening effect, and formed metallic compounds can prevent grain boundary sliding; the cerium element can improve the alloy structure and refine the grains; a microgravity field enables the nickel coated nano-SiC particles to be evenly scattered in the melt; the electric field can increase the degree of supercooling of the melt, nucleation barriers are reduced, and the grains are refined; and the equal channel angular pressing can further refine the grains, and the synthetic mechanical property of the composite material is improved.

The invention discloses a medicine for improving the immunity in a microgravity environment and a screening method thereof, belonging to the field of aerospace medicine and tissue engineering. The medicine disclosed by the invention is prepared by mixing astragalus polysaccharides, ginseng polysaccharides, ganoderma lucidum polysaccharides, pachymaran and lentinan together. The screening method comprises the following steps of: firstly preparing lymphocyte suspension, then culturing the lymphocyte suspension in the microgravity environment of a rotary type bioreactor, adding a mixture of polysaccharides in different proportions, and finally obtaining a medicine prescription for improving the immunity in the microgravity environment by change of the immunologic function of lymphocyte. The invention has the beneficial effects that the construction method and the operation process are simple, the implementation conditions are mild, the medicine for resisting against the reduction of the immunologic function in the microgravity environment can be efficiently and quickly screened, and the medicine and the screening method have the important significance for health protection of astronauts against the weightlessness effect.

The invention relates to a preparation method of a three-dimensional histioid cardiac muscular tissue for studying a simulated microgravity effect, in particular relating to a preparation method of a three-dimensional histioid cardiac muscular tissue microballoon, aiming at solving the problems that according to the current cell three-dimensional culture method for studying the simulated microgravity effect, the cytodex microcarrier material is toxic and is not conducive to generation of cardiocytes, a great number of cells are needed for culture, cell harvesting is difficult, the cells are prone to interference of shearing force when being cultured in a klinostat and the continual contraction time of the cardiocytes is short. The method comprises the following steps: preparing a mixed solution; preparing cardiocytes; preparing a cell suspension, adding the cell suspension to a divalent positive ion solution to obtain microballoons; culturing the mircoballons in a culture medium to form the three-dimensional histioid cardiac muscular tissue. The three-dimensional histioid cardiac muscular tissue prepared by the method prepared by the invention can be cultured on a long-term basis,needs no passage and can maintain contraction of the cardiac muscular tissue for a long time. The method is applied to the research fields of space biology, aerospace medicine and tissue engineering.

The invention relates to a method for evaluating a micro-gravity dual-axis gyrator, the dual-axis gyrator consists of an inner ring and an outer ring, and the method for evaluating the micro-gravity dual-axis gyrator comprises the following steps: 11) carrying out physical modeling for the dual-axis gyrator; 12) establishing three coordinate systems of a base coordinate system, an inner ring coordinate system and an outer ring coordinate system, as shown in Figure 2, wherein the base coordinate system is a fixed coordinate system; 13) utilizing the rotating vector properties of the coordinatesystems for finally deriving an apparent gravity acceleration formula of an object, wherein apparent gravity acceleration is the projection of gravitational acceleration under the inner ring coordinate system, and the value is the vector sum of the acceleration and the gravitational acceleration produced by the rotation of the inner ring and the outer ring, and 14) utilizing the apparent gravity acceleration formula and a simulation platform for evaluating the effect of simulating micro-gravity of parameter settings according to parameters set by the micro-gravity dual-axis gyrator, if the obtained apparent gravity acceleration can achieve all rotating positions, the parameter settings can simulate the micro-gravity effect.

The present invention provides methods of propagating transformed neurons in a simulated microgravity environment generated by a rotating wall vessel (“3-D culture”) so that the phenotype of the transformed neurons so cultured becomes closer to that of non-transformed neurons (primary neurons) and less like the phenotype of transformed neurons cultured via standard cell culture techniques (“2-D culture”).

The invention discloses a ground calibration device for an in-orbit mass measurement instrument. The ground calibration device comprises a microgravity environment simulation device and a calibrationprocess state monitoring system. The microgravity environment simulation device comprises a high tower suspension mechanism and an adjustable horizontal workbench. The calibration process state monitoring system comprises a suspension rope tension monitoring module, a tested object deflection angle monitoring module and a tested object acceleration monitoring module. By aerial suspension for gravity counteraction, a microgravity environment is simulated on a water plane close to a suspension balance point; by the established calibration process state monitoring system for real-time monitoringof a calibration process, whether the calibration process meets set boundary conditions or not can be judged, and an in-orbit mass measurement instrument indicating value corresponding to the measurement process meeting the set boundary conditions is determined as a ground calibration effective value, so that a brand-new solution approach is provided for ground calibration of the in-orbit mass measurement instrument. The ground calibration device has advantages that effective calibration of the in-orbit mass measurement instrument in a ground environment is realized while calibration operationis standardized, and metrological guarantee is provided for equipment used in the special environment.

The invention discloses a ground simulative experiment device and method for micro-gravity flow boiling critical heat flux density, and the device comprises a test tube, a flow regulating valve, a flow meter, a pump, a condenser, a pre-heater, a buffer tank, a speed regulator, a voltage stabilizer, a temperature controller, a heating surface, a power supply and a temperature collector. The simulative experiment method is that the critical heat flux density of the flow boiling heat transfer under microgravity conditions can be replaced by the critical heat flux density range measured under normal gravity conditions and corresponding to the experimental conditions that theta is equal to 315 degrees and theta is equal to 135 degrees. The ground simulative experiment device and method for micro-gravity flow boiling critical heat flux density provided by the invention, compared with the direct micro-gravity experiment and traditional ground simulation method, are rather simple in device structure, very convenient to operate and good in economy, can satisfy experimental test of different experiment conditions, can accurately, conveniently and economically simulate the critical heat fluxdensity under microgravity conditions on the ground, and significantly expand the application range compared with the conventional simulation method.

The invention provides a cell culture device and a cell culture method for simulating microgravity-compressive stress joint stimulation. The device comprises a cell culture unit, a pressure monitoringunit, a microgravity simulation unit and a control unit, wherein the pressure monitoring unit and the microgravity simulation unit are arranged on the cell culture unit, and are electrically connected with the control unit. According to the device and the method, pressure in a culture bottle and the rotational microgravity of the culture bottle are controlled for cell culture researches under thecondition of coaction of different pressure stresses such as normal pressure, high pressure or low pressure and a simulated microgravity on cells as well as mechanical effect cell researches in caseof independent action of the normal pressure, the high pressure, the low pressure or the simulated microgravity.

The invention provides a system for simulating a satellite separation test in a microgravity environment, comprising: a platform satellite structure; a release device structure installed in the platform satellite structure; a small satellite installed in the release device structure A structural member, the release device structural member ejects the small satellite structural member after receiving the release command; a windshield installed at the exit of the release device structural member. The invention effectively reduces the wind resistance in the satellite separation process, and has the characteristics of simple structure, economical and practical, convenient use and high reliability.