An electric propulsion device based on the biefeld-brown effect

Abstract

The application discloses an electric propulsion device based on Biefeld-Brown effect, comprising: a plurality of integrated electrode rod modules and an insulating support; the plurality of integrated electrode rod modules are connected through the insulating support; wherein each integrated electrode rod module comprises an electrode rod, a tungsten needle and a ceramic insulating rod; the electrode rod is connected with the ceramic insulating rod at both ends, and the ceramic insulating rod is connected with the insulating support; and a plurality of tungsten needles are arranged on the electrode rod. The application can solve the problem that the Biefeld-Brown effect electric propulsion device can generate small thrust.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric thrusters, in particular to an electric propulsion device based on Biefeld-Brown effect. BACKGROUND

[0002] In order to make the spacecraft have permanent endurance, the engine without carrying working medium is put on the agenda by space research institutions of various countries. Among them, the electric thruster relying on Biefeld-Brown effect attracts the attention of NASA and European Space Agency, and a number of tests have proved that it has thrust output and application value in 350km and 200km near-earth orbit and near-space environment in addition to the ground atmospheric environment.

[0003] In 2005, the B-ionic Airfish airship invented by Festo Bionic Technology Company in Germany was filled with helium inside to balance its buoyancy and gravity, and the side wings and tail were equipped with electric propulsion engines based on Biefeld-Brown effect, with a total thrust of about 8-10 grams. The maximum flight time of the tail drive is 60 minutes, the maximum flight time of the wing drive is 30 minutes, and the maximum flight speed can reach 0.7m / s.

[0004] In 2018, MIT installed multiple asymmetric capacitor thrust modules in parallel to a light aircraft, and for the first time, an ion propulsion aircraft completed a 60-meter smooth flight in the stadium. The thruster can generate a maximum thrust of 3.2N, and the maximum thrust power ratio can reach 5N / kW, which has reached the index of jet engines.

[0005] The existing electric propulsion based on Biefeld-Brown effect can generate small thrust, which limits its application range. If the single module stacking technology is simply used to increase the thrust of the thruster, it will inevitably increase the volume and gravity of the device, affecting the engineering practicability, and how to effectively improve the breakdown voltage between the plates is also the key to greatly improve the thrust.

[0006] In the prior art, the patent with the patent number CN118220468A provides a novel ion propulsion device. The technical solution of this patent realizes a working medium-free ion propulsion device based on Biefeld-Brown effect, and its structure utilizes the principle of aerodynamics to generate lift. The emitter and receiver of the Biefeld-Brown effect device of this structure are two independent structures, mainly utilizing the principle of aerodynamics to generate lift, which occupies a larger space and has a low thrust-to-weight ratio. Therefore, how to utilize the Biefeld-Brown effect to develop an electric propulsion device based on Biefeld-Brown effect with compact structure and large thrust is a problem to be solved by the present application. SUMMARY

[0007] The technical problem solved by the present application is to provide an electric propulsion device based on Biefeld-Brown effect, which can meet the requirements of compact structure and adjustable thrust.

[0008] To solve the above technical problem, the present application provides the following technical scheme:

[0009] The electric propulsion device based on Biefeld-Brown effect comprises a plurality of integrated electrode rod modules 10 and an insulating support 20; the plurality of integrated electrode rod modules 10 are connected through the insulating support 20; wherein each integrated electrode rod module 10 comprises an electrode rod 11, a tungsten needle 12 and a ceramic insulating rod 13; the electrode rod 11 is connected with the ceramic insulating rod 13 at both ends, and the ceramic insulating rod 13 is connected with the insulating support 20; a plurality of tungsten needles 12 are arranged on the electrode rod 11.

[0010] In addition, in the plurality of integrated electrode rod modules 10, the heights of the embedded tungsten needles 12 are consistent, and the needle tips of the embedded tungsten needles 12 are kept on a horizontal plane.

[0011] In an embodiment of the present application, the electrode rod 11 is made of a conductive metal round rod, which is hollow inside, and a plurality of holes are formed on one side of the electrode rod 11, in which the tungsten needles 12 are embedded.

[0012] In an embodiment of the present application, in the plurality of integrated electrode rod modules 10, the embedded tungsten needles 12 are directed in the same direction, and the tungsten needles 12 on the next integrated electrode rod module 10 are directed to the back of the previous integrated electrode rod module 10.

[0013] In an embodiment of the present application, the plurality of integrated electrode rod modules 10 arranged in sequence on the insulating support 20, the integrated electrode rod modules 10 in odd-numbered columns are connected with high voltage, and the integrated electrode rod modules 10 in even-numbered columns are grounded.

[0014] In an embodiment of the present application, the thrust of the electric propulsion device is adjusted by adjusting the needle tip spacing of the two tungsten needles 12 on the adjacent two integrated electrode rod modules 10 and the electrode rod spacing of the adjacent two integrated electrode rod modules 10.

[0015] In an embodiment of the present application, the needle tip spacing of the two tungsten needles 12 on the adjacent two integrated electrode rod modules 10 and the thrust of the electric propulsion device exist the following relationship:

[0016]

[0017] Wherein, F represents the thrust of the electric propulsion device, d represents the tip-to-tip distance of two tungsten needles 12 on the same horizontal plane of two adjacent integrated electrode rod modules 10, k, l represent two different and greater than zero coefficients.

[0018] In an embodiment of the present application, the electrode rod distance of two adjacent integrated electrode rod modules 10 and the thrust of the electric propulsion device have the following relationship:

[0019]

[0020] Wherein, D represents the electrode rod distance of two adjacent integrated electrode rod modules 10.

[0021] Compared with the prior art, the present application has the beneficial effects that: the present application has a simple structure, the two electrode plates of the asymmetric capacitor based on the Biefeld-Brown effect are integrated on an electrode rod, thereby saving space and weight for the device. The tip-to-tip distance of the tungsten needle and the electrode rod distance of the integrated electrode rod module of the present application are adjustable, thereby realizing the adjustable thrust of the electric propulsion device. The present application gives the relationship formula among the tip-to-tip distance, the electrode rod distance and the thrust of the electric propulsion device, the tip-to-tip distance and the electrode rod distance can be dynamically adjusted according to the desired thrust size, further, the structure of the electric propulsion device is compact, the weight is reduced, and the thrust of the device is guaranteed to be maximum.

[0022] The present application utilizes the Biefeld-Brown effect to design a bipolar integrated Biefeld-Brown effect electric propulsion device, thereby solving the problems of small thrust and low breakdown voltage between the electrode plates of the Biefeld-Brown effect electric propulsion device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of an electric propulsion device based on the Biefeld-Brown effect in an embodiment of the present application.

[0024] Figure 2 It is an enlarged view of the electric propulsion device in an embodiment of the present application.

[0025] Figure 3 It is a tip-to-tip distance and thrust relationship diagram in an embodiment of the present application.

[0026] Figure 4 It is an electrode rod distance and thrust relationship diagram in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to facilitate those skilled in the art to understand the technical scheme of the present application, the technical scheme of the present application will be further described in conjunction with the drawings of the specification.

[0028] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not denote or imply relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly specified otherwise.

[0029] Referring to Figure 1 and Figure 2 The present application provides an electric propulsion device based on Biefeld-Brown effect, comprising a plurality of integrated electrode rod modules 10 and insulating supports 20, and the plurality of integrated electrode rod modules 10 are connected by the insulating supports 20. Each integrated electrode rod module 10 comprises an electrode rod 11, a tungsten needle 12 and a ceramic insulating rod 13. The electrode rod 11 is connected to the ceramic insulating rod 13 at both ends, the ceramic insulating rod 13 is connected to the insulating support 20, and the plurality of tungsten needles 12 are arranged on the electrode rod 11.

[0030] In an embodiment of the present application, two adjacent integrated electrode rod modules 10 and the insulating supports 20 connected at both ends of the plurality of integrated electrode rod modules 10 form a rectangular unit, and the plurality of integrated electrode rod modules 10 and the insulating supports 20 form a Biefeld-Brown effect electric propulsion device with a plurality of stacked rectangular units.

[0031] In an embodiment of the present application, the electrode rod 11 is made of a conductive metal round rod, which is hollow inside. A plurality of holes are formed on one side of the electrode rod 11, and the tungsten needles 12 are embedded in the holes to facilitate the assembly of integrated electrode rod modules 10 with different assembly densities according to actual needs. The base of the tungsten needle 12 is connected to the electrode rod 11 by screwing, and the ceramic insulating rod 13 is connected to the electrode rod 11 at both ends by screwing. The integrated electrode rod module 10 is connected to the insulating support 20 by the ceramic insulating rod 13, and finally fixed by a nut. In addition, the assembly density of the plurality of integrated electrode rod modules 10 on the insulating support 20 can be adjusted according to actual needs.

[0032] In this embodiment, the tungsten needle 12 has high strength and hardness, and the needle tip can be very thin, which helps to improve the thrust of the electric propulsion device. The tungsten needle 12 can withstand high temperature and prevent electric erosion. The ceramic insulating rod 13 has high insulation properties, and adding the ceramic insulating rod 13 at the end of the integrated electrode rod module 10 can effectively suppress the breakdown of the adjacent electrode rod 11 through the insulating support 20 with low insulation strength, further improving the breakdown voltage between the electrode rods 11.

[0033] In an embodiment of the present application, the heights of the embedded tungsten needles 12 in the several integrated electrode rod modules 10 are consistent, and the tips of the embedded tungsten needles 12 are kept in a same horizontal plane. The tips in the same horizontal plane ensure that the breakdown voltage is the same along the length of the integrated electrode rod module 10, avoiding the wood barrel effect. Also, the high-strength and high-hardness tungsten needles 12 will not be deformed greatly due to the pushing force, which is conducive to stable operation voltage.

[0034] In an embodiment of the present application, the directions of the embedded tungsten needles 12 in the several integrated electrode rod modules 10 are the same, and the tungsten needles 12 on the next integrated electrode rod module 10 point to the back of the previous integrated electrode rod module 10.

[0035] In an embodiment of the present application, the several integrated electrode rod modules 10 arranged in sequence on the insulating support 20, the integrated electrode rod modules 10 in the odd-numbered columns are connected to high voltage, and the integrated electrode rod modules 10 in the even-numbered columns are connected to ground, which ensures that one power supply can power the entire device.

[0036] Please refer to Figure 1 and Figure 2 In an embodiment of the present application, the present application utilizes the Biefeld-Brown effect, which refers to a phenomenon that when a pair of asymmetric capacitors with a specific geometric structure are placed opposite each other and immersed in an insulating medium, and then a suitable voltage is applied, a force that attempts to move the device will be generated. Reversing the polarity of the voltage will not change the direction of the force, but will change the size of the force. Based on the principle of the Biefeld-Brown effect, the present application uses the high insulation property of ceramic to make the end ceramic insulating rod 13, which can effectively improve the breakdown voltage between adjacent electrode rods 11. The tungsten needle 12 is used as the emitter, which utilizes the high-temperature resistance and high-strength properties of tungsten. The high-strength tungsten needle 12 tip can be very thin, which helps to improve the thrust of the device. The high-temperature resistance of the tungsten needle 12 helps to resist the long-term high-temperature electrical erosion of the Biefeld-Brown effect electric propulsion device, and helps to improve the service life of the device. The two plates of the asymmetric capacitor of the Biefeld-Brown effect are integrated on one electrode rod, which saves space and weight for the device. In this embodiment, the asymmetric capacitor is the electrode rod 11 and the tungsten needle 12.

[0037] In an embodiment of the present application, the thrust of the electric propulsion device is determined according to the tip spacing of the two tungsten needles 12 on the same horizontal plane of the adjacent two integrated electrode rod modules 10, and the electrode rod spacing of the adjacent two integrated electrode rod modules 10.

[0038] In this embodiment, according to the experimental data, the following formula (1) can be summarized, see Figure 3The distance between the tips of two tungsten needles 12 on the same horizontal plane on two adjacent integrated electrode rod modules 10 and the thrust of the electric propulsion device have the following relationship:

[0039]

[0040] Where F represents the thrust of the electric propulsion device, d represents the distance between the tips of two tungsten needles 12 on the same horizontal plane on two adjacent integrated electrode rod modules 10, and k and l represent two different coefficients greater than zero. According to formula (1), the thrust can be adjusted based on the relationship between the tip spacing and the thrust of the electric propulsion device. In this embodiment, we hope to maximize the thrust. According to formula 1, when the tip spacing is 2 cm, the thrust generated by the integrated electrode rod modules 10 with the same spacing and the bipolar integrated Biefeld-Brown effect electric propulsion device electrode rod module is the largest. Therefore, in practical applications, we choose a tip spacing of 2 cm.

[0041] See also Figure 4 This figure shows the relationship between the thrust per unit length and the spacing of the integrated electrode rod module 10 in a bipolar Biefeld-Brown effect electric propulsion device experiment when the inter-tip distance is 2 cm. The unit length here can be understood as a one-meter-long integrated electrode rod module 10.

[0042] In this embodiment, based on the experimental data, the following formula (2) can be summarized. After the tip spacing is determined, the distance between the electrodes of two adjacent integrated electrode rod modules 10 and the thrust of the electric propulsion device have the following relationship:

[0043]

[0044] Where D represents the distance between two adjacent integrated electrode rod modules 10. Figure 4 From formula (2), it can be seen that when the tip distance of the integrated electrode rod module 10 is 2 cm, the unit length thrust of the integrated electrode rod module 10 in the bipolar integrated Biefeld-Brown effect electric propulsion device experiment shows a trend of first rapidly increasing as the distance between the poles increases, and then the rising rate decreases. The pole spacing D in the rate turning range is 5-8 cm. Therefore, based on the consideration of saving space in engineering applications, the pole spacing D of adjacent integrated electrode rod modules 10 is selected to be 5 cm.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0046] The above-mentioned embodiments merely represent the implementation methods of the invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. For those skilled in the art, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. An electric propulsion device based on the Biefeld-Brown effect, characterized in that: include: A plurality of integrated electrode rod modules (10) and an insulating support (20); the plurality of integrated electrode rod modules (10) are connected via the insulating support (20); wherein each integrated electrode rod module (10) comprises an electrode rod (11), a tungsten needle (12) and a ceramic insulating rod (13); both ends of the electrode rod (11) are connected to the ceramic insulating rod (13), and the ceramic insulating rod (13) is connected to the insulating support (20); a plurality of tungsten needles (12) are arranged on the electrode rod (11); the electrode rod (11) is made of a conductive metal round rod and is hollow inside; a plurality of holes are opened on one side of the electrode rod (11), and the tungsten needles (12) are embedded in the holes; Furthermore, the tungsten needles (12) embedded in the plurality of integrated electrode rod modules (10) are of the same height, and the tips of the tungsten needles (12) are kept on a horizontal plane after being embedded; the tungsten needles (12) embedded in the plurality of integrated electrode rod modules (10) are directed in the same direction, and the tungsten needles (12) on the subsequent integrated electrode rod module (10) point to the back side of the previous integrated electrode rod module (10); A plurality of integrated electrode rod modules (10) are sequentially arranged on an insulating support (20), wherein the integrated electrode rod modules (10) in odd-numbered columns are connected to high voltage, and the integrated electrode rod modules (10) in even-numbered columns are grounded; The thrust of the electric propulsion device is adjusted by adjusting the distance between the needle tips of two tungsten needles (12) on the same horizontal plane on two adjacent integrated electrode rod modules (10) and the distance between the poles of the two adjacent integrated electrode rod modules (10).

2. The electric propulsion device based on the Biefeld-Brown effect according to claim 1, characterized in that: The following relationship exists between the distance between the tips of two tungsten needles (12) on the same horizontal plane on two adjacent integrated electrode rod modules (10) and the thrust of the electric propulsion device: Wherein, F represents the thrust of the electric propulsion device, and the unit is g / m; d represents the distance between the tips of two tungsten needles (12) on the same horizontal plane on two adjacent integrated electrode rod modules (10), and the unit is centimeters; k and l represent two different coefficients greater than zero.

3. The electric propulsion device based on the Biefeld-Brown effect according to claim 2, characterized in that: After the needle tip spacing is determined, the electrode spacing between two adjacent integrated electrode rod modules (10) and the thrust of the electric propulsion device have the following relationship: Wherein, D represents the electrode spacing between two adjacent integrated electrode rod modules (10), in centimeters.

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