Vehicle-mounted mobile lightning test system

Abstract

The invention provides a vehicle-mounted mobile lightning test system which comprises a vehicle-mounted chassis, a hydraulic lifting and overturning platform and an impulse voltage generator, the hydraulic lifting and overturning platform is arranged on the vehicle-mounted chassis, and the impulse voltage generator is arranged on the hydraulic lifting and overturning platform. And the impulse voltage generator can overturn under the action of the hydraulic lifting and overturning platform. According to the vehicle-mounted mobile thunder and lightning test system provided by the invention, through the design of the hydraulic lifting and overturning platform, the impulse voltage generator can be adjusted to be in a horizontal posture during transportation, so that the transportation height and the gravity center are reduced, and the road transportation requirements are met; in a test site, the impulse voltage generator can be overturned to a vertical posture, the height and space requirements required by the test are met, and the requirements of direct lightning stroke effect test and airworthiness conformity verification of large tested objects such as low-altitude aircrafts and wind power blades in a non-fixed laboratory environment can be met.

Description

Technical Field

[0001] This invention relates to the field of lightning protection testing technology for aircraft, and more particularly to a vehicle-mounted mobile lightning testing system. Background Technology

[0002] Currently, lightning testing is a crucial step in the airworthiness certification of low-altitude aircraft and is essential for ensuring flight safety. Existing lightning testing mainly relies on fixed, large-scale lightning test chambers, such as 3000kV-level fixed impulse voltage measurement systems and fully automated impulse current testing systems. These systems can output lightning waveforms that meet the requirements of RTCA / DO-160, SAEARP5416, HB6167, and HB6129 standards, such as 10 / 350μs waves with an amplitude of 200kA and energy of over 10MJ, and also have the capability to output combined ABCD current waveforms.

[0003] However, existing fixed large-scale lightning testing systems have the following shortcomings:

[0004] Site and load capacity limitations: Due to the physical space and load-bearing capacity of the laboratory, it is difficult to accommodate test subjects with ultra-large size and irregular structure, such as low-altitude aircraft or large wings, for in-situ testing.

[0005] High cost and low accessibility: The construction of high-level fixed lightning laboratories requires huge investments and has high operating and maintenance costs, making it difficult for small and medium-sized aircraft R&D enterprises and wind power equipment manufacturers to afford, thus limiting their product R&D testing and airworthiness certification process.

[0006] Insufficient flexibility: It cannot meet the needs of on-site testing in actual application scenarios such as aircraft assembly lines and airports. Summary of the Invention

[0007] The purpose of this invention is to provide a vehicle-mounted mobile lightning testing system that can solve one or more of the problems of the prior art mentioned above.

[0008] According to one aspect of the present invention, a vehicle-mounted mobile lightning testing system is provided, comprising a vehicle chassis, a hydraulic lifting and tilting platform, and an impulse voltage generator. The hydraulic lifting and tilting platform is mounted on the vehicle chassis, and the impulse voltage generator is mounted on the hydraulic lifting and tilting platform, wherein the impulse voltage generator is capable of tilting under the action of the hydraulic lifting and tilting platform.

[0009] In some embodiments, the hydraulic lifting and tilting platform includes a lifting base and a tilting mechanism, with the tilting mechanism mounted on the lifting base.

[0010] In some embodiments, the lifting base includes a base plate and a plurality of lifting mechanisms disposed on both sides of the base plate. The base plate is disposed on a vehicle chassis. The lifting mechanism includes a connecting rod and a lifting rod. The connecting rod is connected to the base plate and is disposed parallel to the vehicle chassis. The lifting rod is disposed perpendicular to the vehicle chassis and is capable of moving the connecting rod in a vertical direction.

[0011] In some embodiments, the flipping mechanism includes a first support plate, a second support plate, and a hydraulic cylinder. The first support plate is mounted on a lifting base, and one end of the second support plate is connected to one end of the first support plate via a hinge. A hydraulic cylinder is disposed between the first and second support plates. Under the action of the hydraulic cylinder, the second support plate can be flipped 90° with the hinge. An impact voltage generator is mounted on the second support plate.

[0012] In some embodiments, the second support plate includes a back plate, a first support arm, and a second support arm. One end of the back plate is connected to one end of the first support plate. The first support arm and the second support arm are symmetrically arranged on both sides of the back plate. The first support arm and the second support arm are arranged perpendicular to the back plate. The first support arm and the second support arm are respectively connected to the first support plate through hydraulic cylinders.

[0013] In some implementations, the impulse voltage generator is a Marx impulse voltage generator, which is capable of generating a preset lightning impulse waveform.

[0014] In some implementations, the impulse voltage generator includes a multi-stage Marx circuit, each stage of which includes an energy storage capacitor.

[0015] In some implementations, the impulse voltage generator is provided with an expandable interface.

[0016] The vehicle-mounted mobile lightning test system provided by this invention, through the design of a hydraulic lifting and tilting platform, allows the impulse voltage generator to be adjusted to a horizontal position during transportation to reduce the transportation height and center of gravity, meeting the requirements of road transportation; at the test site, the impulse voltage generator can be tilted to a vertical position to meet the height and space requirements of the test, and can meet the needs of large test objects such as low-altitude aircraft and wind turbine blades to conduct direct lightning strike effect tests and airworthiness compliance verification in non-fixed laboratory environments.

[0017] In addition, unless otherwise specified, all aspects of the technical solution of this invention can be implemented by conventional means in the art. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the vehicle-mounted mobile lightning test system in its transportation state, according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the working state of a vehicle-mounted mobile lightning test system provided in an embodiment of the present invention.

[0021] Figure 3 This is a structural schematic diagram of the working state of the hydraulic lifting and tilting platform in a vehicle-mounted mobile lightning test system provided in an embodiment of the present invention.

[0022] Figure 4 The circuit diagram of the impulse voltage generator in a vehicle-mounted mobile lightning test system provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, not all embodiments. 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.

[0024] Example:

[0025] In this embodiment, please refer to the appendix to the specification. Figure 1-4 A vehicle-mounted mobile lightning testing system is provided, including: a vehicle chassis 1, a hydraulic lifting and tilting platform 2, and an impulse voltage generator 3. The hydraulic lifting and tilting platform 2 is mounted on the vehicle chassis 1, and the impulse voltage generator 3 is mounted on the hydraulic lifting and tilting platform 2. The impulse voltage generator 3 can be tilted under the action of the hydraulic lifting and tilting platform 2.

[0026] Therefore, through the design of the hydraulic lifting and tilting platform, the impulse voltage generator can be adjusted to a horizontal position during transportation to reduce the transportation height and center of gravity, thus meeting the requirements of road transportation; at the test site, the impulse voltage generator can be tilted to a vertical position to meet the height and space requirements of the test, and can meet the needs of large test objects such as low-altitude aircraft and wind turbine blades to conduct direct lightning strike effect tests and airworthiness compliance verification in non-fixed laboratory environments.

[0027] The hydraulic lifting and tilting platform 2 may include a lifting base 21 and a tilting mechanism 22, with the tilting mechanism 22 mounted on the lifting base 21. The lifting base 21 is mounted on the vehicle chassis 1 and can move up and down in the vertical direction to adjust its height. The tilting mechanism 22 is equipped with an impact voltage generator 3, which can drive the impact voltage generator 3 to tilt 90°.

[0028] The vehicle chassis 1 can be the floor of an open cargo box of a flatbed trailer. The vehicle chassis 1 is used to carry the hydraulic lifting and tipping platform 2 and the impact voltage generator 3 for transportation.

[0029] The lifting base 21 may include a base plate 211 and several lifting mechanisms disposed on both sides of the base plate 211. The lifting mechanisms may be symmetrically arranged along opposite sides of the base plate 211. The symmetrical arrangement of the lifting mechanisms can ensure that the base plate 211 is more stable during the lifting process.

[0030] The lifting mechanism may include a connecting rod 212 and a lifting rod 213. The connecting rod 212 is connected to the base plate 211 and is arranged parallel to the vehicle chassis 1. The lifting rod 213 is arranged perpendicular to the vehicle chassis 1 and can enable the connecting rod 212 to move in the vertical direction.

[0031] The base plate 211 is mounted on the vehicle chassis 1, and the lifting rod 213 contacts the vehicle chassis 1. Driven by power, the lifting rod 213 can move the base plate 211, the tilting mechanism 22 mounted on the base plate 211, and the impulse voltage generator 3 mounted on the tilting mechanism 22 up and down along the lifting rod 213, thereby adjusting the height of the impulse voltage generator 3. This allows the base plate 211 to be lowered during transportation to meet height requirements, and the impulse voltage generator 3 to be adjusted during testing to meet actual testing needs.

[0032] In an optional embodiment, the base plate 211 can be a rectangular plate with a hollow center. On the one hand, the rectangular plate fits the shape of the vehicle chassis 1 better, and on the other hand, the hollow design can effectively reduce the weight of the lifting base and facilitate transportation.

[0033] In an optional embodiment, the flipping mechanism 22 may include a first support plate 221, a second support plate 222, and a hydraulic cylinder 223. One end of the first support plate 221 and one end of the second support plate 222 are flip-connected; typically, the ends of the first support plate 221 and the second support plate 222 closest to the rear of the vehicle can be connected.

[0034] The first support plate 221 can be fixedly or detachably mounted on the lifting base 21. Specifically, the first support plate 221 can be fixedly or detachably mounted on the base plate 211. The first support plate 221 can also be a hollow rectangular plate.

[0035] One end of the second support plate 222 can be flipped to connect with one end of the first support plate 221. That is, the second support plate 222 can be parallel to the first support plate 221, and after the second support plate 222 is flipped 90°, it can be perpendicular to the first support plate 221.

[0036] The second support plate 222 can be connected to the first support plate 221 via a hinge.

[0037] A hydraulic cylinder 223 is provided between the first support plate 221 and the second support plate 222. One end of the hydraulic cylinder 223 is fixedly mounted on the first support plate 221, and the extendable end of the hydraulic cylinder 223 is connected to the second support plate 222. Thus, the second support plate 222 can rotate 90° with the hinge under the action of the hydraulic cylinder 223.

[0038] The second support plate 222 may include a back plate 224, a first support arm 225 and a second support arm 226. One end of the back plate 224 is connected to one end of the first support plate 221. The first support arm 225 and the second support arm 226 are symmetrically arranged on both sides of the back plate 224. The first support arm 225 and the second support arm 226 are arranged perpendicular to the back plate 224. The first support arm 225 and the second support arm 226 are respectively connected to the first support plate 221 through a hydraulic cylinder 223.

[0039] The impulse voltage generator 3 is mounted on the second support plate 222. Specifically, the impulse voltage generator 3 is mounted on the side of the second support plate 222 away from the first support plate 221. The first support arm 225 and the second support arm 226 are mounted on both sides of the impulse voltage generator 3.

[0040] Therefore, the first support arm 225 and the second support arm 226 can partially shield the impact voltage generator 3, and the telescopic end of the hydraulic cylinder 223 is set on the first support arm 225 and the second support arm 226, so that the point of force application of the hydraulic cylinder 223 is closer to the center of gravity of the impact voltage generator 3, making the flipping process of the impact voltage generator 3 more stable.

[0041] In an optional embodiment, the telescopic end of the hydraulic cylinder 223 can be multi-stage telescopic. This allows the impact voltage generator 3 to rotate within a 0-180° range, enabling more complex spatial attitude adjustments and meeting the test interface requirements of test specimens of different shapes and sizes.

[0042] In an optional embodiment, the impulse voltage generator 3 may be a Marx impulse voltage generator, which is capable of generating a preset lightning impulse waveform.

[0043] In an optional embodiment, the impulse voltage generator 3 can generate high-voltage or high-current impulse waveforms that meet the requirements of standards such as GJB1389A-2005, GJB3567, HB6167.25-2014, and MIL-STD-464C, and complete the direct lightning strike effect test according to standards such as GJB8848-2016, GJB3567, HB6167.25-2014, and SAEARP5416A, and is suitable for testing whole machines and large components.

[0044] When the impulse voltage generator 3 is a Marx impulse voltage generator, it can include multiple Marx circuits, each of which includes an energy storage capacitor. The inter-stage design employs low inductance, achieving a total energy storage capacity of 10MJ+. It can output a standard lightning impulse waveform with a peak voltage of not less than 3000kV or a peak current of not less than 200kA, conforming to at least one of the following standards: GJB1389A-2005, GJB3567, HB6167.25-2014, MIL-STD-464C, and SAEARP5416A. Therefore, the use of efficient energy storage in a compact space, nanosecond-level precise timing control, and milliohm-level low-inductance circuit design ensures that the vehicle-mounted mobile lightning test system can achieve laboratory-level waveform output fidelity and repeatability.

[0045] The impulse voltage generator 3 may also include a control unit, which can be a microcontroller, used to control the generation of lightning impulse waveforms. The control unit can also realize waveform parameter configuration, test automation, real-time analysis of test data, and automatic generation of test reports.

[0046] The impulse voltage generator 3 is equipped with an expandable interface. Specifically, the expandable interface can be set on the generator stage and the control unit, which facilitates upgrading the testing capabilities of the impulse voltage generator 3 as needed, such as increasing the voltage level or adding new lightning impulse waveforms.

[0047] The vehicle-mounted mobile lightning test system provided by this invention, through the design of a hydraulic lifting and tilting platform, enables the impulse voltage generator to be adjusted to a horizontal position during transportation to reduce the transportation height and center of gravity, thus meeting the requirements of road transportation; at the test site, the impulse voltage generator is first tilted to a vertical position, and then the height of the impulse voltage generator is adjusted to meet the height and space requirements of the test.

[0048] The vehicle-mounted mobile lightning testing system provided by this invention is suitable for conducting direct lightning strike effect tests and airworthiness compliance verification on large test objects such as the entire aircraft, large components (such as wings and tail fins) of low-altitude aircraft (eVTOL, large logistics drones, unmanned helicopters and low-altitude general aviation aircraft) and wind turbine blades in non-fixed laboratory environments (such as airports and assembly plants). By moving the impulse voltage generator to the test object site, it solves the problem that large test objects cannot be brought into fixed test chambers. It meets the urgent needs of the aviation, low-altitude aircraft, wind power and other fields for R&D protection design verification and airworthiness compliance verification of the entire aircraft and key subsystems (battery packs, motors and electronic controls, avionics equipment, composite material structures, etc.). It greatly reduces the threshold and cost for enterprises developing new aircraft such as eVTOL to conduct lightning tests, shortens the R&D testing cycle, and solves the key bottleneck of airworthiness certification.

[0049] The above description is only an optional embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vehicle-mounted mobile lightning testing system, characterized in that, include: Vehicle chassis (1), hydraulic lifting and tilting platform (2), and impact voltage generator (3), The hydraulic lifting and tilting platform (2) is mounted on the vehicle chassis (1), and the impact voltage generator (3) is mounted on the hydraulic lifting and tilting platform (2). The impact voltage generator (3) can be tilted under the action of the hydraulic lifting and tilting platform (2).

2. The vehicle-mounted mobile lightning testing system according to claim 1, characterized in that, The hydraulic lifting and tilting platform (2) includes a lifting base (21) and a tilting mechanism (22). The flipping mechanism (22) is mounted on the lifting base (21).

3. The vehicle-mounted mobile lightning testing system according to claim 2, characterized in that, The lifting base (21) includes a base plate (211) and several lifting mechanisms disposed on both sides of the base plate (211). The base plate (211) is mounted on the vehicle chassis (1). The lifting mechanism includes a connecting rod (212) and a lifting rod (213). The connecting rod (212) is connected to the base plate (211) and is arranged parallel to the vehicle chassis (1). The lifting rod (213) is arranged perpendicular to the vehicle chassis (1) and can enable the connecting rod (212) to move in the vertical direction.

4. The vehicle-mounted mobile lightning testing system according to claim 2, characterized in that, The tilting mechanism (22) includes a first support plate (221), a second support plate (222), and a hydraulic cylinder (223). The first support plate (221) is mounted on the lifting base (21). One end of the second support plate (222) is connected to one end of the first support plate (221) by a hinge. A hydraulic cylinder (223) is disposed between the first support plate (221) and the second support plate (222). Under the action of the hydraulic cylinder (223), the second support plate (222) can rotate 90° with the hinge. The impulse voltage generator (3) is mounted on the second support plate (222).

5. The vehicle-mounted mobile lightning testing system according to claim 4, characterized in that, The second support plate (222) includes a back plate (224), a first support arm (225) and a second support arm (226). One end of the back plate (224) is connected to one end of the first support plate (221). The first support arm (225) and the second support arm (226) are symmetrically arranged on both sides of the back plate (224). The first support arm (225) and the second support arm (226) are arranged perpendicular to the back plate (224). The first support arm (225) and the second support arm (226) are respectively connected to the first support plate (221) through the hydraulic cylinder (223).

6. The vehicle-mounted mobile lightning testing system according to claim 1, characterized in that, The impulse voltage generator (3) is a Marx impulse voltage generator, which can generate a preset lightning impulse waveform.

7. The vehicle-mounted mobile lightning testing system according to claim 1, characterized in that, The impulse voltage generator (3) includes a multi-stage Marx circuit, and each stage of the Marx circuit includes an energy storage capacitor.

8. The vehicle-mounted mobile lightning testing system according to claim 1, characterized in that, The impulse voltage generator (3) is equipped with an expandable interface.

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