Magnetic levitation rotating propulsion device suitable for lunar base launching

Abstract

The application relates to the technical field of magnetic suspension and electromagnetic propulsion, and discloses a magnetic suspension rotating propulsion device suitable for moon base projection. The device comprises a base, a suspension mover, a propulsion motor, a cantilever, a bearing, a suspension module, an inter-segment electrical switching assembly and a supporting mechanism. The supporting mechanism is in a ring shape, the base is arranged in the ring-shaped structure, a plurality of suspension modules are arranged on the supporting mechanism, the suspension modules are connected through the inter-segment electrical switching assembly, the cantilever is connected with the bearing to realize rotation, the suspension mover is arranged at one end or both ends of the cantilever, the propulsion motor comprises a motor mover and a motor stator, the motor mover is arranged at both ends of the cantilever, the motor stator is arranged on the base, and a returning device mounting mechanism is arranged at one end of the cantilever. Therefore, the moon surface returning device can be accelerated to a speed not lower than 2500 m / s, so that the projection requirement of the returning device is met.

Description

Technical Field

[0001] This invention relates to the fields of magnetic levitation technology and electromagnetic propulsion technology, and in particular to a magnetic levitation rotary propulsion device suitable for lunar-based launch. Background Technology

[0002] The International Lunar Research Station is one of my country's first batch of international large-scale scientific programs and engineering projects, with lunar resource development and utilization being one of its main research directions. To ensure the reusable, low-cost, and high-frequency return of lunar resources to Earth, appropriate launch schemes need to be designed based on the typical characteristics of the lunar surface environment (high vacuum, high and low temperatures, low gravity). The magnetic levitation rotary propulsion device primarily uses a rotating motor and an electric levitation device to provide ultra-high-speed propulsion and stable levitation for the return of lunar resources. In this environment, the magnetic levitation rotary propulsion device, employing both magnetic levitation and electromagnetic propulsion technologies, has inherent advantages such as no air resistance, small-scale vacuum and cooling equipment, and low escape velocity. Furthermore, to minimize technological risks, the lunar-based magnetic levitation rotary propulsion device can be adapted for use on the Earth's surface, and a ground-based demonstration and verification device can be developed and tested.

[0003] The prior art proposes a rotary projectile scheme based on a conventional rotary motor. This scheme uses a conventional rotary motor to accelerate the return device, and the projectile action is completed after the return device reaches a specified speed.

[0004] However, the main drawback of existing rotary projectile systems is that rotary projectiles based on conventional rotary motors are essentially indirectly driven, meaning that the electromagnetic torque of the motor is transmitted to the rotary arm via bearings and then to the return device. When the return device reaches the projectile speed, stress concentration occurs at the mechanical interface between the bearings and the rotary arm, which can easily cause severe structural deformation or even damage, leading to projectile failure. Summary of the Invention

[0005] This invention provides a magnetic levitation rotary propulsion device suitable for lunar-based launches, which can solve the technical problems in the prior art.

[0006] This invention provides a magnetic levitation rotary propulsion device suitable for lunar-based launches. The device includes a base, a levitation mover, a propulsion motor, a cantilever, bearings, levitation modules, an inter-segment electrical connection assembly, and a support mechanism. The support mechanism is a ring structure, with the base disposed within the ring structure. Multiple levitation modules are mounted on the support mechanism and connected via the inter-segment electrical connection assembly. The cantilever is connected to the bearings to achieve rotation. The levitation mover is located at one or both ends of the cantilever. The propulsion motor includes a motor mover and a motor stator, with the motor mover located at both ends of the cantilever and the motor stator located on the base. A return device mounting mechanism is located at one end of the cantilever.

[0007] Preferably, the propulsion motor is a superconducting synchronous motor or a conventional synchronous motor.

[0008] Preferably, the motor stator includes multi-phase windings, and the shape of the motor stator is a segmented circular arc shape or a continuous circular arc shape.

[0009] Preferably, the motor actuator comprises a magnet array.

[0010] Preferably, the magnet array is a Halbach array or an array with alternating N and S poles.

[0011] Preferably, the magnet array includes magnets, a magnet mounting base plate, and a cover plate. The magnets are disposed on the magnet mounting base plate, the cover plate is disposed on the magnets, and the magnet array is fixed to the cantilever by a bolt assembly.

[0012] Preferably, the levitation module includes a levitation module substrate and a levitation module non-magnetic metal plate, wherein the levitation module non-magnetic metal plate is disposed on the levitation module substrate.

[0013] Preferably, the inter-segment electrical transfer assembly includes a non-magnetic metal plate and a base plate, the non-magnetic metal plate being disposed on the base plate, and the suspension module being fixed to the inter-segment electrical transfer assembly by mounting bolts.

[0014] Preferably, the motor stator further includes an outer Dewar side plate, an outer Dewar cover plate, and a motor mounting base.

[0015] By employing the above technical solutions, using magnetic levitation and electromagnetic propulsion technologies, the lunar return vehicle can be accelerated to a speed of no less than 2500 m / s, meeting the ejection requirements of the return vehicle. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] Figure 1 A schematic diagram of a magnetic levitation rotary propulsion device suitable for lunar-based launch is shown according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the installation of the motor mover / suspended mover and the rotating arm according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram of the installation of the suspension module and the adapter assembly according to an embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram of the motor stator coil structure according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram of the stator coil winding machine mold structure according to an embodiment of the present invention is shown;

[0022] Figure 6 A schematic diagram of an electric motor stator containing a sealed external Dewar, according to an embodiment of the present invention, is shown.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Return device mounting mechanism, 2. Suspension mover, 3. Motor mover, 4. Motor stator, 5. Rotary arm, 6. Bearing, 7. Suspension module, 8. Inter-segment electrical transfer assembly, 9. Support mechanism, 22. Magnet, 23. Magnet mounting base plate, 24. Bolt assembly, 31. Suspension module base plate, 32. Suspension module non-magnetic metal plate, 33. Transfer assembly non-magnetic metal plate, 34. Transfer assembly base plate, 35. Mounting bolt, 41. Stator coil, 42. Inter-coil electrical connection wire, 410. Coil body, 412. Coil mold, 51. Outer Dewar side plate, 52. Outer Dewar cover plate, 53. Motor mounting base. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] Figure 1 A schematic diagram of a magnetic levitation rotary propulsion device suitable for lunar-based launch is shown according to an embodiment of the present invention.

[0029] like Figure 1As shown, this embodiment of the invention provides a magnetic levitation rotary propulsion device suitable for lunar-based launch. The device includes a base, a levitation mover 2, a propulsion motor, a cantilever 5, a bearing 6, levitation modules 7, an inter-segment electrical transfer assembly 8, and a support mechanism 9. The support mechanism 9 is a ring structure, with the base disposed within the ring structure. Multiple levitation modules 7 are mounted on the support mechanism 9 and connected via the inter-segment electrical transfer assembly 8. The cantilever 6 is connected to the bearing 7 to achieve rotation. The levitation mover 2 is disposed at one or both ends of the cantilever 6. The propulsion motor includes a motor mover 3 and a motor stator 4. The motor mover 3 is disposed at both ends of the cantilever 6, and the motor stator 4 is disposed on the base. A return device mounting mechanism 1 is disposed at one end of the cantilever 6.

[0030] Among them, the device mounting mechanism 1 is used to install the return device, the levitation mover 2 and the levitation module 7 are used to provide the levitation function for the return device, the motor mover 3 and the motor stator 4 are used to provide the propulsion function, the cantilever 6 is used to provide the mounting interface for the motor mover and the levitation mover 2 and to launch the return device, and the bearing is used to provide rotational motion constraint for the swing arm.

[0031] By employing the above technical solutions, using magnetic levitation and electromagnetic propulsion technologies, the lunar return vehicle can be accelerated to a speed of no less than 2500 m / s, meeting the ejection requirements of the return vehicle.

[0032] In this invention, the order in which the electronic mover and the suspended mover are arranged radially on the cantilever can be determined according to actual needs, and this invention does not limit this.

[0033] For example, the bearing can be a magnetic levitation bearing or a mechanical bearing. In this invention, the shaft only serves as a constraint device for rotational motion, rather than a force transmission device for electromagnetic torque.

[0034] According to one embodiment of the present invention, the propulsion motor is a superconducting synchronous motor or a conventional synchronous motor.

[0035] According to one embodiment of the present invention, the motor stator 4 includes multi-phase windings, and the shape of the motor stator is a segmented circular arc shape or a continuous circular arc shape.

[0036] For example, a multiphase winding can be a multiphase winding composed of stator coils.

[0037] According to one embodiment of the present invention, the motor actuator 3 includes a magnet array.

[0038] According to one embodiment of the present invention, the magnet array is a Halbach array or an array with alternating N and S poles.

[0039] According to one embodiment of the present invention, such as Figure 2 As shown, the magnet array includes a magnet 22, a magnet mounting base plate 23, and a cover plate. The magnet 22 is disposed on the magnet mounting base plate 23, the cover plate is disposed on the magnet 22, and the magnet array is fixed to the cantilever 6 by bolt assembly 24.

[0040] According to one embodiment of the present invention, such as Figure 3 As shown, the suspension module 7 includes a suspension module base plate 31 and a suspension module non-magnetic metal plate 32, and the suspension module non-magnetic metal plate 32 is disposed on the suspension module base plate 31.

[0041] According to one embodiment of the present invention, such as Figure 3 As shown, the inter-segment electrical transfer assembly 8 includes a non-magnetic metal plate 33 and a base plate 34. The non-magnetic metal plate 33 is disposed on the base plate 34. The suspension module 7 is fixed to the inter-segment electrical transfer assembly 8 by mounting bolts 35.

[0042] According to one embodiment of the present invention, such as Figure 6 As shown, the motor stator 4 may also include an outer Dewar side plate 51, an outer Dewar cover plate 52, and a motor mounting base 53.

[0043] In other words, in order to apply the propulsion device described in this invention to a ground environment, the motor stator may also include an external Dewar to provide a low vacuum environment for the stator coils.

[0044] In other words, when a superconducting motor is used, a vacuum environment created by an external Dewar is not required on the lunar surface, but a low-vacuum environment requires an external Dewar (with the lowest possible conductivity) to create such an environment on Earth. Figure 6 As shown.

[0045] The following description, with reference to examples, illustrates a magnetic levitation rotary propulsion device suitable for lunar-based launches according to the present invention.

[0046] The motor motor, consisting of the motor mover and motor stator, forms the propulsion motor for the complete magnetic levitation rotary propulsion device. To suppress thrust fluctuations and improve thrust quality, a superconducting / normal-conducting synchronous motor is preferred. The motor stator can consist of stator coils 41 (e.g., Figure 4 The stator coils 41 are composed of a multiphase winding (using conventional wires / superconducting tapes, etc.) and can be designed as segmented or continuous arc shapes to meet actual cost and performance requirements. The stator coils 41 are connected by inter-coil electrical connection lines 42. Each stator coil can consist of a coil body 410 and a coil module 412, as shown. Figure 5As shown. The motor mover can be encapsulated by a magnet array and peripheral structural components. The magnet array can be designed as a Halbach array or a conventional N-pole, S-pole alternating form, depending on performance requirements. A schematic diagram of the motor mover / suspended mover and the rotating arm installation is shown below. Figure 2 As shown.

[0047] The levitation mechanism of the entire device consists of a levitation mover, levitation modules, and inter-segment electrical transfer components. The composition of the levitation mover is similar to that of the motor mover. The levitation module can be composed of non-magnetic metal plates and structural components. Considering processing limitations and space layout, the levitation module can be assembled from multiple arc segments. To ensure stable levitation force, inter-segment electrical transfer components can be used between different arc segments. The inter-segment electrical transfer components can maintain the lowest possible contact resistance with the non-magnetic metal plates of adjacent levitation modules through pressing, plating, and polishing processes. The installation of the levitation modules and transfer components is as follows... Figure 3 As shown.

[0048] Under the action of positioning and control signals, the converter supplies symmetrical multiphase (the number of phases can be designed according to actual needs) current to the motor stator. The motor mover generates electromagnetic force and electromagnetic torque under the constraint of the rotating arm and bearing, thereby driving the return device to generate rotational motion.

[0049] When the rotating arm rotates, the levitation mover and the levitation module generate induced eddy currents, thereby producing a passive levitation force that does not require active control. This force resists the vertical deformation of the rotating arm and the corresponding devices above it under the action of gravity, and provides a stable horizontal plane for the return mechanism to launch the object. This provides a good foundation for accurate control of the launch time and position and accurate prediction of the landing point from the source.

[0050] As can be seen from the above embodiments, the magnetic levitation rotary propulsion device suitable for lunar-based launches described in this invention has at least the following advantages:

[0051] (1) Under the electromagnetic force of the motor mover, the rotating arm generates a low-fluctuation, high-quality electromagnetic torque that is directly used for the return device to launch, and the electromagnetic torque does not need to be transmitted through the rotating arm.

[0052] (2) When the operating speed reaches the design value of the buoyancy speed, the return device generates levitation force and overcomes the deformation of the rotating arm, levitation mover and motor mover under the action of gravity, ensuring the levelness during the projectile process.

[0053] (3) During the process of the levitation mover passing through the inter-section electrical transfer device, the levitation force fluctuates little, which has little impact on the launch and control of the return device.

[0054] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic levitation rotary propulsion device suitable for lunar-based launches, characterized in that, The device includes a base, a levitation mover (2), a propulsion motor, a cantilever (5), a bearing (6), a levitation module (7), an inter-segment electrical transfer assembly (8), and a support mechanism (9). The support mechanism (9) is a ring structure, and the base is disposed within the ring structure. Multiple levitation modules (7) are disposed on the support mechanism (9) and connected via the inter-segment electrical transfer assembly (8). The cantilever (5) is connected to the bearing (6) to achieve rotation. The levitation mover (2) is disposed at one or both ends of the cantilever (5). The propulsion motor includes a motor mover (3) and a motor stator (4). The motor mover (3) is disposed within the base. At both ends of the cantilever (5), the motor stator (4) is mounted on the base, and the return device mounting mechanism (1) is mounted at one end of the cantilever (5). The suspension module (7) includes a suspension module base plate (31) and a suspension module non-magnetic metal plate (32). The suspension module non-magnetic metal plate (32) is mounted on the suspension module base plate (31). The inter-segment electrical transfer assembly (8) includes a transfer assembly non-magnetic metal plate (33) and a transfer assembly base plate (34). The transfer assembly non-magnetic metal plate (33) is mounted on the transfer assembly base plate (34). The suspension module (7) is fixed to the inter-segment electrical transfer assembly (8) by mounting bolts (35).

2. The apparatus according to claim 1, characterized in that, The propulsion motor is a superconducting synchronous motor or a normal-conducting synchronous motor.

3. The apparatus according to claim 1, characterized in that, The motor stator (4) includes a multi-phase winding, and the shape of the motor stator is a segmented circular arc shape or a continuous circular arc shape.

4. The apparatus according to claim 3, characterized in that, The motor mover (3) includes a magnet array.

5. The apparatus according to claim 4, characterized in that, The magnet array is a Halbach array or an array with alternating N and S poles.

6. The apparatus according to claim 5, characterized in that, The magnet array includes a magnet (22), a magnet mounting base plate (23), and a cover plate. The magnet (22) is disposed on the magnet mounting base plate (23), and the cover plate is disposed on the magnet (22). The magnet array is fixed to the cantilever (5) by a bolt assembly (24).

7. The apparatus according to claim 6, characterized in that, The motor stator (4) also includes an outer Dewar side plate (51), an outer Dewar cover plate (52), and a motor mounting base (53).

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