Space electromagnetic propulsion magnetic plasma group spatio-temporal evolution monitoring device

Abstract

The invention relates to the technical field of spaceflight space electric propulsion, in particular to a space electromagnetic propulsion magnetic plasma group spatio-temporal evolution monitoring device which comprises a vacuum chamber, a high-speed camera, a metal flange, a space electromagnetic thruster, a first probe array and a second probe array. Wherein the high-speed camera is fixed at the front end in the vacuum cabin through a metal supporting structure; the space electromagnetic thruster is fixed to the rear end in the vacuum chamber through a metal supporting structure, and a magnetic plasma group is generated in the space electromagnetic thruster. The metal flange is positioned between the high-speed camera and the space electromagnetic thruster; a transparent glass window is arranged in the center of the metal flange; and a plurality of groups of first probe arrays and second probe arrays are arranged. Through multi-dimensional layout arrangement of the high-speed camera, the multiple density probe arrays and the magnetic field probe array, accurate monitoring of the mu s time scale magnetic plasma group structure is achieved, and efficient and accurate monitoring capacity of magnetic plasma group spatio-temporal evolution characteristics, quality characteristics and acceleration performance is achieved.

Description

Technical Field

[0001] This application relates to the technical field of aerospace space electric propulsion, and more specifically, to a device for monitoring the spatio-temporal evolution of a magnetic plasma blob in space electromagnetic propulsion. Background Art

[0002] Space electromagnetic propulsion is a new type of electric propulsion technology. Its working principle is to use a high-power radio frequency discharge method to efficiently ionize the propellant and induce the generation of a magnetic closed plasma blob with a special configuration. Inside the plasma blob, electrons rotate rapidly in the angular direction to generate a large angular current. If an additional magnetic field in the radial direction is applied inside the thruster discharge chamber, the electromagnetic Lorentz force generated by the coupling of the angular current and the radial magnetic field accelerates the magnetic plasma blob to eject at high speed and form thrust.

[0003] Therefore, accurately judging the generation quality of the magnetic plasma blob is an effective means to evaluate its thrust performance. However, due to the special configuration and transient characteristics of the magnetic plasma blob, current monitoring methods can only singly interpret its local density characteristics, magnetic field characteristics, or spatial evolution characteristics, and any one or both of these characteristics cannot comprehensively cover the spatio-temporal characteristics of the magnetic plasma blob, nor can it clearly interpret its quality advantages and disadvantages. The accuracy and accuracy of monitoring are difficult to effectively support the optimized design of products, restricting the development and comprehensive application of electromagnetic thruster engineering products. Summary of the Invention

[0004] This application provides a device for monitoring the spatio-temporal evolution of a magnetic plasma blob in space electromagnetic propulsion, which solves the problems of inaccurate judgment on the formation of a magnetic closed special configuration plasma blob in existing space electromagnetic propulsion, difficult evaluation of quality, and difficult evaluation of transient acceleration performance.

[0005] To achieve the above object, this application provides a device for monitoring the spatio-temporal evolution of a magnetic plasma blob in space electromagnetic propulsion, including a vacuum chamber, a high-speed camera, a metal flange, a space electromagnetic thruster, a first probe array, and a second probe array, wherein: the high-speed camera is arranged inside the vacuum chamber and fixed at the front end inside the vacuum chamber through a metal support structure; the space electromagnetic thruster is arranged inside the vacuum chamber and fixed at the rear end inside the vacuum chamber through a metal support structure, and a magnetic plasma blob is generated inside it; the metal flange is arranged inside the vacuum chamber, between the high-speed camera and the space electromagnetic thruster, close to the position of the high-speed camera; a transparent glass window is arranged at the center position of the metal flange, and the high-speed camera is placed closely against the transparent glass window; the high-speed camera, the transparent glass window, and the space electromagnetic thruster are concentrically arranged; multiple groups of the first probe array are respectively arranged at the center position of the inner axis of the space electromagnetic thruster and at the position close to the outlet with a length of 1 / 4; multiple groups of the second probe array are respectively arranged at the position close to the outlet inside the space electromagnetic thruster and at the position close to the outlet with a length of 1 / 3.

[0006] Further, each group of first probe arrays consists of 6 density probes evenly distributed radially; among them, the innermost density probe is arranged at the 1 / 4 length of the spatial electromagnetic thruster in the radial direction.

[0007] Further, each group of second probe arrays consists of 6 magnetic field probes evenly distributed radially; among them, the innermost magnetic field probe is arranged at the 1 / 4 length of the spatial electromagnetic thruster in the radial direction.

[0008] Further, the first probe arrays and the second probe arrays are staggered in the axial space.

[0009] Further, two adjacent groups of first probe arrays are arranged orthogonally; two adjacent groups of second probe arrays are arranged orthogonally.

[0010] Further, a group of first probe arrays and second probe arrays near the center position of the spatial electromagnetic thruster are placed in parallel; a group of first probe arrays and second probe arrays near the outlet position of the spatial electromagnetic thruster are also placed in parallel.

[0011] Further, the response times of the first probe arrays, the second probe arrays, and the high-speed camera are all ≤ 1 μs, the time resolutions are all ≥ 1 μs, and the three are triggered simultaneously.

[0012] Further, the distance between the transparent glass window and the spatial electromagnetic thruster is ≥ 2 m and < 3 m; the aperture of the transparent glass window is 0.5 times the aperture of the spatial electromagnetic thruster.

[0013] A device for monitoring the spatio-temporal evolution of a magnetoplasma blob in a spatial electromagnetic propulsion provided by this application has the following beneficial effects:

[0014] Through the multi-dimensional layout setting of the high-speed camera, multiple groups of density probe arrays and magnetic field probe arrays, and the fusion application of multi-source monitoring information in this application, the accurate monitoring of the magnetoplasma blob structure on the μs time scale is realized, and it has the efficient and accurate monitoring ability for the spatio-temporal evolution characteristics, quality characteristics, and acceleration performance of the magnetoplasma blob. It overcomes the problem that the conventional local information monitoring method of the magnetoplasma blob may be missed or misjudged, and can judge and record the formation, quality factor, and thrust performance of the magnetoplasma blob in real time, improving the credibility of the monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0016] Figure 1It is a schematic diagram of a spatio-temporal evolution monitoring device for a magnetoplasma blob in space electromagnetic propulsion according to an embodiment of the present application;

[0017] In the figure: 1 - vacuum chamber, 2 - high-speed camera, 3 - metal flange, 4 - transparent glass window, 5 - space electromagnetic thruster, 6 - first probe array, 7 - metal support structure, 8 - magnetoplasma blob, 9 - second probe array. Detailed implementation manners

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0020] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0021] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0022] In addition, the meaning of the term "plural" should be two or more.

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with the embodiments.

[0024] As Figure 1 shown, this application provides a device for monitoring the spatio-temporal evolution of a magnetoplasma blob 8 in space electromagnetic propulsion, including a vacuum chamber 1, a high-speed camera 2, a metal flange 3, a space electromagnetic thruster 5, a first probe array 6, and a second probe array 9, wherein: The high-speed camera 2 is arranged inside the vacuum chamber 1 and fixed at the front end inside the vacuum chamber 1 through a metal support structure 7; The space electromagnetic thruster 5 is arranged inside the vacuum chamber 1 and fixed at the rear end inside the vacuum chamber 1 through a metal support structure 7, and a magnetoplasma blob 8 is generated inside it; The metal flange 3 is arranged inside the vacuum chamber 1, between the high-speed camera 2 and the space electromagnetic thruster 5, close to the position of the high-speed camera 2; A transparent glass window 4 is arranged at the center position of the metal flange 3, and the high-speed camera 2 is placed closely against the transparent glass window 4; The high-speed camera 2, the transparent glass window 4, and the space electromagnetic thruster 5 are concentrically arranged; Multiple groups of the first probe array 6 are arranged at the central position of the inner axis of the space electromagnetic thruster 5 and at the position of 1 / 4 of the length close to the outlet; Multiple groups of the second probe array 9 are arranged at the position close to the outlet and at the position of 1 / 3 of the length close to the outlet inside the space electromagnetic thruster 5.

[0025] Specifically, the device for monitoring the spatio-temporal evolution of the magnetoplasma blob 8 in space electromagnetic propulsion provided by the embodiments of this application can comprehensively monitor the spatio-temporal acceleration performance of the magnetoplasma blob 8, solve the problems of accurately judging the formation of the transient magnetic closed structure plasma blob in a closed and high-vacuum environment and tracking its spatio-temporal evolution characteristics, and overcome the shortcomings of incomplete diagnostic information, low spatio-temporal resolution, and inaccurate identification of the type of magnetoplasma blob 8 by conventional single means. Among them, the vacuum chamber 1 is used to provide a test environment; The high-speed camera 2 is used for monitoring the spatio-temporal characteristics of the magnetoplasma blob 8; The metal flange 3 is used to isolate the high-speed camera 2 and the plasma; The space electromagnetic thruster 5 is used to generate the magnetoplasma blob 8; The first probe array 6 is used to monitor the density information of the plasma; The second probe array 9 is used to monitor the magnetic field information of the plasma; The transparent glass window 4 is used to pass the optical path of the high-speed camera 2; The high-speed camera 2 and the space electromagnetic thruster 5 are respectively fixed at the front end and the rear end inside the vacuum chamber 1 through the metal support structure 7, and the two are coaxially arranged, with the transparent glass window 4 arranged in the middle. The high-speed camera 2 records the information of the magnetoplasma blob 8 generated by the space electromagnetic thruster 5 through the transparent glass window 4.

[0026] Furthermore, each group of the first probe array 6 is composed of 6 density probes evenly distributed along the radial direction; among them, the innermost density probe is arranged at 1 / 4 of the radial length of the space electromagnetic thruster 5.

[0027] Furthermore, each group of the second probe arrays 9 is composed of six magnetic field probes evenly distributed in the radial direction; among them, the innermost magnetic field probe is arranged at the 1 / 4 length in the radial direction of the space electromagnetic thruster 5.

[0028] Furthermore, the first probe array 6 and the second probe array 9 are arranged staggeredly in the axial space.

[0029] Furthermore, two adjacent groups of the first probe arrays 6 are arranged orthogonally; two adjacent groups of the second probe arrays 9 are arranged orthogonally.

[0030] Specifically, the first probe array 6 is a density probe array for monitoring the density information of the discharge plasma of the space electromagnetic thruster 5, and each group is composed of six single density probes evenly distributed in the radial direction; the second probe array 9 is a magnetic field probe array for monitoring the magnetic field information of the discharge plasma of the space electromagnetic thruster 5, and each group is composed of six single magnetic field probes evenly distributed in the radial direction; multiple groups of the first probe array 6 and the second probe array 9 are arranged, staggeredly in the axial space and orthogonally arranged (viewed from the tail end) inside the space electromagnetic thruster 5, that is, one group of density probe arrays is placed orthogonally to another group of density probe arrays, and one group of magnetic field probe arrays is placed orthogonally to another group of magnetic field probe arrays, so as to realize the all-round and accurate acquisition of the density information and magnetic field information of the magnetic plasma cluster 8.

[0031] Furthermore, one group of the first probe array 6 and the second probe array 9 near the central position of the space electromagnetic thruster 5 are placed in parallel; one group of the first probe array 6 and the second probe array 9 near the outlet position of the space electromagnetic thruster 5 are also placed in parallel. To ensure the accuracy and comprehensiveness of the monitoring of the density information and magnetic field information, the density probe arrays and magnetic field probe arrays near the central position and the outlet position of the space electromagnetic thruster 5 are placed in parallel, and are placed orthogonally at other positions.

[0032] Furthermore, the response times of the first probe array 6, the second probe array 9, and the high-speed camera 2 are all ≤ 1 μs, and the time resolutions are all ≥ 1 μs, and the three are triggered simultaneously. The first probe array 6, the second probe array 9, and the high-speed camera 2 are triggered synchronously through the control system and carry out monitoring. The three must be used in synchronization to be used to judge the formation and evolution characteristics of the magnetic closed plasma cluster, and none of them can be missing.

[0033] Furthermore, the distance between the transparent glass window 4 and the space electromagnetic thruster 5 is ≥ 2 m and < 3 m; the aperture of the transparent glass window 4 is 0.5 times the aperture of the space electromagnetic thruster 5, ensuring that the high-speed camera can clearly and accurately record the information of the magnetic plasma cluster 8.

[0034] Specifically, the space electromagnetic thruster 5 operates with pulsed discharge in the vacuum chamber 1, generating a magnetic plasma cluster 8 with a special configuration. When the magnetic plasma cluster 8 passes through the density probe array and the magnetic field probe array respectively, the two arrays can obtain density and magnetic field information at different times and different spatial positions through monitoring. At the same time, the high-speed camera 2 records the spatio-temporal information of the magnetic plasma cluster 8 at different times. According to the comprehensive interpretation and mutual calibration of the spatial radial density distribution, spatial radial magnetic field distribution, and the optical image characteristics of the high-speed camera 2 of the magnetic plasma cluster 8 at the same moment, it can be accurately analyzed whether it is formed. According to the comprehensive analysis of the magnetic plasma cluster 8 at different times, different spatial radial densities, spatial radial magnetic fields, and the optical image information of the high-speed camera 2, its quality and acceleration performance can be evaluated. At the same time, this device also provides richer research information for accurately analyzing the dynamic evolution characteristics of the plasma cluster.

[0035] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spatio-temporal evolution monitoring device for a magnetoplasma blob in space electromagnetic propulsion, characterized in that It includes a vacuum chamber, a high-speed camera, a metal flange, a space electromagnetic thruster, a first probe array and a second probe array, where: The high-speed camera is arranged inside the vacuum chamber and fixed at the front end inside the vacuum chamber through a metal support structure; The space electromagnetic thruster is arranged inside the vacuum chamber and fixed at the rear end inside the vacuum chamber through a metal support structure, and a magnetic plasma group is generated inside it; The metal flange is arranged inside the vacuum chamber, between the high-speed camera and the space electromagnetic thruster, and close to the high-speed camera; A transparent glass window is arranged at the center position of the metal flange, and the high-speed camera is placed closely against the transparent glass window; The high-speed camera, the transparent glass window and the space electromagnetic thruster are concentrically arranged; Multiple groups of the first probe arrays are arranged at the central position of the internal axis of the space electromagnetic thruster and at the position of 1 / 4 of the length close to the outlet respectively; Multiple groups of the second probe arrays are arranged at the position close to the outlet inside the space electromagnetic thruster and at the position of 1 / 3 of the length close to the outlet respectively.

2. The space electromagnetic propulsion magnetic plasma blob spatio-temporal evolution monitoring device according to claim 1, wherein Each group of the first probe arrays is composed of 6 density probes evenly distributed along the radial direction; among them, the innermost density probe is arranged at 1 / 4 of the radial length of the space electromagnetic thruster.

3. The spatio-temporal evolution monitoring device for a magnetoplasma blob of space electromagnetic propulsion according to claim 2, wherein Each group of the second probe arrays is composed of 6 magnetic field probes evenly distributed along the radial direction; among them, the innermost magnetic field probe is arranged at 1 / 4 of the radial length of the space electromagnetic thruster.

4. The spatio-temporal evolution monitoring device for magnetoplasma blobs of space electromagnetic propulsion according to claim 3, characterized in that The first probe array and the second probe array are arranged staggeredly in the axial space.

5. The spatio-temporal evolution monitoring device for the magnetoplasma blob of the space electromagnetic propulsion according to claim 4, characterized in that Adjacent two groups of the first probe arrays are arranged orthogonally; adjacent two groups of the second probe arrays are arranged orthogonally.

6. The space electromagnetic propulsion magnetic plasma blob spatio-temporal evolution monitoring device according to claim 5, characterized in that, One group of the first probe array and the second probe array close to the central position of the space electromagnetic thruster are placed in parallel; one group of the first probe array and the second probe array close to the outlet position of the space electromagnetic thruster are also placed in parallel.

7. The spatio-temporal evolution monitoring device for the magnetoplasma blob of the space electromagnetic propulsion according to claim 6, characterized in that, The response times of the first probe array, the second probe array and the high-speed camera are all ≤1 μs, the time resolutions are all ≥1 μs, and the three are triggered simultaneously.

8. The space electromagnetic propulsion magnetic plasma cluster spatio-temporal evolution monitoring device according to claim 7, characterized in that The distance between the transparent glass window and the space electromagnetic thruster is ≥2 m and <3 m; the aperture of the transparent glass window is 0.5 times the aperture of the space electromagnetic thruster.

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