Lunar-based magnetic suspension rotary casting system

Abstract

The invention relates to the overall technical field of magnetic suspension electromagnetic emission, and discloses a moon-based magnetic suspension rotary casting system. The rotary casting system comprises an energy storage subsystem which is used for providing energy for the rotary casting system; the propulsion subsystem comprises a superconducting motor, the superconducting motor provides acceleration and braking force for a cantilever and a returner arranged on the cantilever, electric energy is converted into mechanical energy in the acceleration process, the mechanical energy is converted into electric energy in the braking process, the superconducting motor comprises a motor rotor and a motor stator, and the motor rotor is arranged below the cantilever; the suspension subsystem comprises a suspension stator and a suspension rotor and is used for providing vertical suspension force for the cantilever, and the suspension rotor is arranged below the cantilever; the rotating track subsystem is used for arranging a suspension stator and a motor stator; the current conversion subsystem is used for converting the direct current at the bus end into variable-frequency and variable-amplitude alternating current required by the propulsion subsystem; and the traction control subsystem is used for carrying out closed-loop control on the emission parameters in the operation process.

Description

Technical Field

[0001] The present invention relates to the general technical field of magnetic levitation electromagnetic launch, and in particular to a lunar-based magnetic levitation rotary ejection system. Background Art

[0002] With the in-depth research and advancement of global lunar exploration, the development and utilization of lunar resources has become indispensable. By establishing a base on the moon, we can develop and utilize in-situ resources such as rare metal minerals on the moon, and enhance our ability to cope with future energy and resource crises on Earth.

[0003] A magnetic levitation electromagnetic launch system is built on the lunar surface to accelerate the target payload to the lunar escape velocity and then release it. The target payload then enters the Earth in a predetermined manner to perform tasks such as lunar resource development. The lunar electromagnetic launch system does not consume chemical fuel and has the advantages of low cost, rapid response, and reusability. Since the moon has outstanding advantages such as low gravity and high vacuum, it is naturally beneficial to the application of electromagnetic launch. Therefore, magnetic levitation electromagnetic launch is one of the most advantageous launch technologies on the moon. However, the existing technologies are mainly aimed at the technical route of electromagnetic launch on the surface of the earth, and there is no technology for lunar-based magnetic levitation electromagnetic launch. Summary of the invention

[0004] The invention provides a lunar-based magnetic levitation rotary ejection system, which can solve the technical problems in the prior art.

[0005] The present invention provides a lunar-based magnetic levitation rotary ejection system, wherein the rotary ejection system comprises an ejection area and an equipment area, wherein the ejection area comprises a propulsion subsystem, a suspension subsystem and a rotary track subsystem, and the equipment area comprises an energy storage subsystem, a current conversion subsystem and a traction control subsystem.

[0006] The energy storage subsystem is used to provide energy for the rotating projectile system;

[0007] The propulsion subsystem includes a superconducting motor, which provides acceleration and braking force for the cantilever and the returner arranged on the cantilever, converts electrical energy into mechanical energy during acceleration, and converts mechanical energy into electrical energy during braking. The superconducting motor includes a motor mover and a motor stator, and the motor mover is arranged below the cantilever;

[0008] The suspension subsystem includes a suspension stator and a suspension mover, which are used to provide vertical suspension force for the cantilever, and the suspension mover is arranged below the cantilever;

[0009] The rotating orbit subsystem is used to set the suspension stator and the motor stator so as to fix the suspension stator and the motor stator on the flat lunar surface;

[0010] The current conversion subsystem is used to convert the DC power at the bus terminal into the variable frequency and variable amplitude AC power required by the propulsion subsystem;

[0011] The traction control subsystem is used to perform closed-loop control on the launch parameters during operation.

[0012] Preferably, the rotary projectile system is arranged in a double-layer concentric circle manner, the inner circle corresponds to the propulsion subsystem, the outer circle corresponds to the suspension subsystem, the cantilever extends from the inner circle to the outer circle, the number of the motor movers is two, which are symmetrically arranged below the cantilever and corresponding to the inner circle with the center of the concentric circle as the midpoint, and the number of the suspension mover is one, which is arranged below the end of the cantilever and corresponding to the outer circle.

[0013] Preferably, during the propulsion process, energy is supplied by an energy source to the energy storage subsystem and transmitted to the DC bus, the DC bus transmits the electrical energy to the inverter subsystem, the inverter subsystem converts the DC power into AC power with adjustable frequency and amplitude required by the motor stator of the propulsion subsystem to power the motor stator, and then converts it into kinetic energy required by the swing arm and the returner through the action of electromagnetic force; during the braking process, energy is converted from the kinetic energy of the swing arm and the motor rotor of the propulsion subsystem into electrical energy inside the motor stator of the propulsion subsystem, and the electrical energy is transmitted to the DC bus through the inverter subsystem, and the DC bus charges the energy storage subsystem.

[0014] Preferably, the data of the suspension subsystem, the propulsion subsystem and the rotating orbit subsystem are uniformly collected by the traction control subsystem; the propulsion subsystem receives the ejection instruction, performs pre-ejection technical preparation and ejection work; the traction control subsystem receives the traction instruction, controls the inverter controller through the motor controller, and receives the position and speed information of the motor mover, the swing arm and the returner through the positioning and speed measuring equipment.

[0015] Preferably, the rotating track subsystem includes a suspension part and a propulsion part, the suspension part is used to set the suspension stator, and the propulsion part is used to set the motor stator.

[0016] Through the above-mentioned technical scheme, it is possible to realize the rapid launch of various carriers such as spacecraft, launch vehicles, missiles, etc. from the lunar surface, significantly improve the lunar-to-Earth transportation capacity, and solve problems such as insufficient lunar-to-Earth return capacity; and, the system adopts the "electromagnetic propulsion + electric suspension + rotational ejection" technical route, which has outstanding system advantages such as high thrust, high frequency, low vibration, low energy consumption, and small footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A composition diagram of a lunar-based magnetic levitation rotary projectile system according to an embodiment of the present invention is shown;

[0019] Figure 2 A layout diagram of a lunar-based magnetic levitation rotary ejection system according to an embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of the interaction relationship of a lunar-based magnetic levitation rotary projectile system according to an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram of the working process of a lunar-based magnetic levitation rotary ejection system according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0025] Figure 1 A composition diagram of a lunar-based magnetic levitation rotary projectile system according to an embodiment of the present invention is shown.

[0026] like Figure 1-2 As shown, an embodiment of the present invention provides a lunar-based magnetic levitation rotary ejection system, wherein the rotary ejection system includes an ejection area and an equipment area, wherein the ejection area includes a propulsion subsystem, a suspension subsystem and a rotary track subsystem, and the equipment area includes an energy storage subsystem, a current conversion subsystem and a traction control subsystem.

[0027] The energy storage subsystem is used to provide energy for the rotating projectile system to ensure the smooth operation of the system;

[0028] The propulsion subsystem includes a superconducting motor (superconducting linear motor, as a system power source), which provides acceleration and braking force for the cantilever and the returner (projectile) arranged on the cantilever, converts electrical energy into mechanical energy during acceleration, and converts mechanical energy into electrical energy during braking. The superconducting motor includes a motor mover (propulsion mover) and a motor stator (propulsion stator), and the motor mover is arranged below the cantilever;

[0029] The suspension subsystem includes a suspension stator and a suspension mover, which are used to provide vertical suspension force for the cantilever (to balance gravity and improve mechanical properties), and the suspension mover is arranged below the cantilever;

[0030] The rotating orbit subsystem is used to set the suspension stator and the motor stator so as to fix the suspension stator and the motor stator on the flat lunar surface;

[0031] That is, provide a basic structure for installing the suspended stator, fix the primary (stator) of the superconducting linear motor and the suspended stator on the flat lunar surface, and provide a track that meets the requirements of smoothness, stability and other characteristics.

[0032] The current conversion subsystem is used to convert the DC power at the bus terminal into the variable frequency and variable amplitude AC power required by the propulsion subsystem;

[0033] That is, it provides the function of power conversion, converting the direct current at the bus end into the variable frequency and variable amplitude alternating current required by the propulsion device.

[0034] The traction control subsystem is used to perform closed-loop control on the launch parameters during operation.

[0035] The launch parameters include velocity and acceleration.

[0036] Through the above-mentioned technical scheme, it is possible to realize the rapid launch of various carriers such as spacecraft, launch vehicles, missiles, etc. from the lunar surface, significantly improve the lunar-to-Earth transportation capacity, and solve problems such as insufficient lunar-to-Earth return capacity; and, the system adopts the "electromagnetic propulsion + electric suspension + rotational ejection" technical route, which has outstanding system advantages such as high thrust, high frequency, low vibration, low energy consumption, and small footprint.

[0037] According to one embodiment of the present invention, the rotary projectile system is arranged in a double-layer concentric circle manner, the inner circle corresponds to the propulsion subsystem, the outer circle corresponds to the suspension subsystem, the cantilever extends from the inner circle to the outer circle, the number of the motor movers is two, which are symmetrically arranged below the cantilever and corresponding to the inner circle with the center of the concentric circle as the midpoint, and the number of the suspension mover is one, which is arranged below the end section of the cantilever and corresponding to the outer circle.

[0038] The size of the concentric circles is designed based on the maximum mass of the projectile, and is backward compatible with projectiles of different masses, which is not limited in the present invention.

[0039] According to an embodiment of the present invention, Figure 3 As shown, during the propulsion process, energy is supplied from the energy source to the energy storage subsystem and transmitted to the DC bus, the DC bus transmits the electrical energy to the inverter subsystem, the inverter subsystem converts the DC power into the frequency-amplitude-adjustable AC power required by the motor stator of the propulsion subsystem (specifically, converts the high-voltage DC power into the frequency-amplitude-adjustable high-voltage AC power required by the stator of the propulsion subsystem) to power the motor stator, and then converts it into the kinetic energy required by the swing arm and the returner through the action of electromagnetic force; during the braking process, energy is converted from the kinetic energy of the swing arm and the motor mover of the propulsion subsystem into electrical energy inside the motor stator of the propulsion subsystem, and the electrical energy is transmitted to the DC bus through the inverter subsystem, and the DC bus charges the energy storage subsystem.

[0040] According to an embodiment of the present invention, continue to refer to Figure 3The data of the suspension subsystem, the propulsion subsystem and the rotating orbit subsystem are uniformly collected by the traction control subsystem; the propulsion subsystem receives the ejection instruction, performs pre-ejection technical preparation and ejection work; the traction control subsystem receives the traction instruction, controls the inverter controller through the motor controller, and receives the position and speed information of the motor mover, the swing arm and the returner through the positioning and speed measuring equipment.

[0041] According to one embodiment of the present invention, the rotating orbit subsystem includes a suspension part and a propulsion part, the suspension part is used to set the suspension stator, and the propulsion part is used to set the motor stator.

[0042] The following describes the working process of a lunar-based magnetic levitation rotary ejection system according to the present invention with reference to examples.

[0043] The lunar-based magnetic levitation rotary ejection system is centered on the propulsion subsystem and the suspension subsystem. A single ejection is divided into two stages: pre-ejection technical preparation and ejection. The pre-ejection technical preparation stage mainly carries out preparations such as cooling and excitation of superconducting magnets. The ejection stage mainly performs the returner ejection task, including three processes: propulsion, speed correction and braking. The details are as follows:

[0044] 1) During the propulsion process, the traction control subsystem controls the energy storage subsystem to convert the stored energy into variable-voltage and variable-frequency alternating current to power the propulsion subsystem stator. The stator generates a traveling wave magnetic field. The magnetic poles of the traveling wave magnetic field interact with the magnetic field of the propulsion subsystem mover to generate electromagnetic thrust along the tangent direction of the track, and the traction projectile and the swing arm are continuously accelerated along the tangent direction of the track. As the movement speed increases, the suspension subsystem mover interacts with the stator to generate a suspension force to overcome the deformation of the swing arm end caused by gravity.

[0045] 2) During the speed correction process, the traction control subsystem locks the control frequency and adjusts the electromagnetic thrust to keep the projectile moving at a constant speed, which is used for speed correction of the projectile.

[0046] 3) During the braking process, the traction control subsystem adjusts the power angle of the propulsion subsystem. At this time, the propulsion subsystem is converted from the motor state to the generator state, and the propulsion subsystem is converted from traction force to braking force to decelerate the swing arm. The mechanical energy of the system is converted into electrical energy inside the propulsion subsystem, which is transmitted to the DC bus through the current conversion subsystem and used to charge the energy storage subsystem, realizing the reuse of part of the electrical energy.

[0047] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lunar-based magnetic levitation rotary ejection system, characterized in that: The rotary ejection system includes an ejection area and an equipment area. The ejection area includes a propulsion subsystem, a suspension subsystem and a rotary track subsystem. The equipment area includes an energy storage subsystem, a current conversion subsystem and a traction control subsystem. The energy storage subsystem is used to provide energy for the rotating projectile system; The propulsion subsystem includes a superconducting motor, which provides acceleration and braking force for the cantilever and the returner arranged on the cantilever, converts electrical energy into mechanical energy during acceleration, and converts mechanical energy into electrical energy during braking. The superconducting motor includes a motor mover and a motor stator, and the motor mover is arranged below the cantilever; The suspension subsystem includes a suspension stator and a suspension mover, which are used to provide vertical suspension force for the cantilever, and the suspension mover is arranged below the cantilever; The rotating orbit subsystem is used to set the suspension stator and the motor stator so as to fix the suspension stator and the motor stator on the flat lunar surface; The current conversion subsystem is used to convert the DC power at the bus terminal into the variable frequency and variable amplitude AC power required by the propulsion subsystem; The traction control subsystem is used to perform closed-loop control on the launch parameters during operation.

2. The rotating projectile system according to claim 1, characterized in that: The rotary projectile system is arranged in a double-layer concentric circle manner, the inner circle corresponds to the propulsion subsystem, the outer circle corresponds to the suspension subsystem, the cantilever extends from the inner circle to the outer circle, the number of the motor movers is two, which are symmetrically arranged below the cantilever with the center of the concentric circle as the midpoint and correspond to the inner circle, and the number of the suspension mover is one, which is arranged below the end section of the cantilever and corresponds to the outer circle.

3. The rotating projectile system according to claim 2, characterized in that: During the propulsion process, energy is supplied by an energy source to the energy storage subsystem and transmitted to the DC bus. The DC bus transmits electrical energy to the inverter subsystem. The inverter subsystem converts DC power into AC power with adjustable frequency and amplitude required by the motor stator of the propulsion subsystem to power the motor stator, and then converts it into kinetic energy required by the swing arm and the returner through the action of electromagnetic force. During the braking process, energy is converted from the kinetic energy of the swing arm and the motor rotor of the propulsion subsystem into electrical energy inside the motor stator of the propulsion subsystem, and the electrical energy is transmitted to the DC bus through the inverter subsystem. The DC bus charges the energy storage subsystem.

4. The rotating projectile system according to claim 3, characterized in that: The data of the suspension subsystem, the propulsion subsystem and the rotating orbit subsystem are uniformly collected by the traction control subsystem; the propulsion subsystem receives the ejection instruction, and performs pre-ejection technical preparation and ejection work; the traction control subsystem receives the traction instruction, controls the inverter controller through the motor controller, and receives the position and speed information of the motor mover, the swing arm and the returner through the positioning and speed measuring equipment.

5. The rotating projectile system according to claim 4, characterized in that: The rotating track subsystem includes a suspension part and a propulsion part. The suspension part is used to set the suspension stator, and the propulsion part is used to set the motor stator.

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