External hanging type RCS (radar cross section) refitted device of military unmanned target drone

Abstract

The utility model provides a military unmanned target drone external hanging type RCS (radar cross section) refit device which comprises RCS refit parts symmetrically arranged on wingtip blocks at the two ends of a wing of an unmanned aerial vehicle, each RCS refit part comprises a high-wave-transparent rectifying device and a luneberg lens reflector, and the luneberg lens reflectors are arranged in the high-wave-transparent rectifying devices. The luneberg lens reflector and the high-wave-transparent rectifying device are provided with scale marks. The vertical scale mark and the transverse scale mark are arranged in the high-wave-transmission rectifying device, the luneberg lens reflector with the scale marks is placed in the high-wave-transmission rectifying device, and the transverse coordinate and the longitudinal coordinate corresponding to the required RCS value are aligned with the vertical scale mark and the transverse scale mark of the high-wave-transmission rectifying device by rotating the luneberg lens reflector. And the RCS value of the Luneberg lens reflector is matched with the required RCS value. Through the same Luneberg lens reflector, the effect of changing different RCSs is achieved, the RCS debugging cost is reduced, and the problem that an existing unmanned aerial vehicle RCS is difficult to adjust is solved.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft technology, specifically relating to an external RCS modification device for a military unmanned target drone. Background Technology

[0002] An unmanned target drone is an unmanned aerial vehicle primarily used to simulate aerial targets, providing realistic firing training targets for air defense weapon systems (such as surface-to-air missiles and anti-aircraft guns), and also for testing the performance of new air defense weapons. It can fly according to pre-set parameters such as flight path, altitude, and speed, simulating the flight characteristics of various aerial threats such as aircraft and missiles.

[0003] As an air defense training tool, target drones are mainly used for the daily training of air defense forces. They can simulate different types of aerial threats, such as targets with different speeds, altitudes, and radar cross-sections (RCS). Among these, RCS is a crucial indicator of the ease with which a drone can be detected by radar. Therefore, it is necessary to develop and design RCS external attachments of different bands and sizes to suit the radar cross-sections of different flying objects. Utility Model Content

[0004] The purpose of this utility model is to provide an external RCS modification device for military unmanned target drones, overcoming the aforementioned technical problems existing in the prior art.

[0005] Therefore, the technical solution provided by this utility model is as follows:

[0006] An external RCS modification device for a military unmanned target drone includes RCS modification components symmetrically mounted on the wingtip blocks at both ends of the drone's wings. The RCS modification components include a high-transmittance rectifier and a Luneburg lens reflector. The Luneburg lens reflector is located inside the high-transmittance rectifier. Both the Luneburg lens reflector and the high-transmittance rectifier have scale lines. The RCS value of the Luneburg lens reflector is obtained by rotating the Luneburg lens reflector to align the horizontal and vertical coordinates corresponding to the RCS value with the scale lines of the high-transmittance rectifier.

[0007] The high-transmittance rectifier includes an upper shell and a lower shell. Both the upper shell and the lower shell have hollow hemispheres inside. When the upper shell and the lower shell are fastened together, the two hollow hemispheres form a spherical bowl. The Luneburg lens reflector is fixed inside the spherical bowl.

[0008] Both the upper and lower shells are provided with ear pieces on their sides, and the two ear pieces are aligned vertically.

[0009] The scale lines of the Luneburg lens reflector include a horizontal center latitude line and a vertical center longitude line.

[0010] The high-transmittance rectifier is an ellipsoidal high-transmittance rectifier cover.

[0011] The scale lines of the high-transmittance rectifier include vertical scale markings and horizontal scale markings. The horizontal scale markings are located on the long axis of the lower shell and symmetrically arranged on both sides of the spherical bowl. The vertical scale markings are located on the short axis of the lower shell and symmetrically arranged on both sides of the spherical bowl.

[0012] The ear piece has multiple connecting through holes.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides an external RCS modification device for military unmanned target drones. The high-transmittance rectifier has vertical and horizontal scale markings inside. The Luneburg lens reflector with scale lines is placed inside the high-transmittance rectifier. By rotating the Luneburg lens reflector, the horizontal and vertical coordinates corresponding to the required RCS value are aligned with the vertical and horizontal scale markings of the high-transmittance rectifier, so that the RCS value of the Luneburg lens reflector matches the required RCS value.

[0015] This invention achieves different variable RCS effects using the same Luneburg lens reflector, reducing RCS adjustment costs and solving the problem of difficult RCS adjustment in existing UAVs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a Luneburg lens reflector with graduations;

[0018] Figure 3 This is a schematic diagram of one implementation of a high-transmission rectifier.

[0019] In the diagram: 1. High-transmittance rectifier; 2. Luneburg lens reflector; 3. Horizontal center latitude line; 4. Vertical scale markings; 5. Horizontal scale markings; 6. Ear plate; 7. Upper shell; 8. Lower shell; 9. Ball cup; 10. Vertical center meridian line. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] Exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the present invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments shown in the drawings is not intended to limit the present invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0022] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0023] Example 1

[0024] This utility model provides an external RCS modification device for military unmanned target drones, such as... Figure 1 As shown, the device includes an RCS modification component symmetrically mounted on the wingtip blocks at both ends of the UAV wing. The RCS modification component includes a high-transmittance rectifier 1 and a Luneburg lens reflector 2. The Luneburg lens reflector 2 is located inside the high-transmittance rectifier 1. Both the Luneburg lens reflector 2 and the high-transmittance rectifier 1 are provided with scale lines. The RCS value of the Luneburg lens reflector 2 is obtained by rotating the Luneburg lens reflector 2 to align the horizontal and vertical coordinates corresponding to the RCS value with the scale lines of the high-transmittance rectifier 1.

[0025] This invention uses a spherical Luneburg lens reflector 2 with graduated lines to precisely adjust the spatial orientation of the Luneburg lens reflector 2, and can also provide different ranges of RCS area, solving the problems of difficult RCS adjustment, complex structure, high cost and inconvenient operation of existing UAVs.

[0026] Example 2

[0027] Based on Example 1, this example provides an external RCS modification device for a military unmanned target drone, such as... Figure 1 As shown, the high-transmittance rectifier 1 includes an upper shell 7 and a lower shell 8. Both the upper shell 7 and the lower shell 8 are provided with hollow hemispheres. After the upper shell 7 and the lower shell 8 are fastened together, the two hollow hemispheres form a spherical bowl 9. The Luneburg lens reflector 2 is fixed in the spherical bowl 9.

[0028] How to use:

[0029] The RCS modification device is symmetrically installed on the wingtip blocks at both ends of the UAV wing. After determining the mission RCS index, the reflection intensity of Luneburg lens reflector 2 can be obtained. A three-dimensional spatial coordinate system is established to obtain the spatial coordinates of the focal point of Luneburg lens reflector 2. Then, Luneburg lens reflector 2 is rotated to match the RCS value of Luneburg lens reflector 2 with the required RCS value. Finally, Luneburg lens reflector 2 is glued to the high-transmittance rectifier device 1.

[0030] When the RCS index needs to be adjusted for the next task, loosen Luneburg lens reflector 2 and then rotate the adjustment scale to the corresponding RCS value.

[0031] Example 3

[0032] Based on Embodiment 2, this embodiment provides an external RCS modification device for military unmanned target drones. The upper shell 7 and the lower shell 8 are provided with ear pieces 6 on their sides, and the positions of the two ear pieces 6 are aligned vertically.

[0033] The ear piece 6 has multiple connecting through holes.

[0034] like Figure 1 and Figure 3 As shown, the RCS modification device is connected to the unmanned target drone wingtip block via the lug 6, the screw passing through the connecting through hole, and the threaded hole.

[0035] Example 4

[0036] Based on Example 1, this example provides an external RCS modification device for a military unmanned target drone, such as... Figure 2 As shown, the scale of the Luneburg lens reflector 2 includes a horizontal center latitude line 3 and a vertical center longitude line 10.

[0037] The scale lines of the high-transmittance rectifier 1 include vertical scale markings 4 and horizontal scale markings 5. The horizontal scale markings 5 ​​are located on the long axis of the lower shell 8 and symmetrically arranged on both sides of the spherical bowl 9. The vertical scale markings 4 are located on the short axis of the lower shell 8 and symmetrically arranged on both sides of the spherical bowl 9.

[0038] The high-transparency rectifier 1 is an ellipsoidal high-transparency rectifier cover.

[0039] The high-transmittance rectifier 1 can be made of quartz fiber.

[0040] The horizontal center latitude line 3 and the vertical center longitude line 10 of the Luneburg lens reflector 2 have a scale range of 0-360°, and the RCS value corresponding to different angles is different. When setting the scale, the RCS value corresponding to each angle is measured by rotating the Luneburg lens reflector 2, and the corresponding scale value is specified to obtain the correspondence between the RCS value and the scale.

[0041] Operating principle:

[0042] After clarifying the RCS index of the task, the required reflection intensity of Luneburg lens reflector 2 is obtained, and the index is allocated to the two RCS modification devices. Then, a three-dimensional spatial coordinate system is established to obtain the spatial coordinates of the focal point of each Luneburg lens reflector 2.

[0043] Then, the Luneburg lens reflector 2 is placed in the spherical bowl 9, with the horizontal center latitude line 3 of the Luneburg lens reflector 2 aligned with the vertical scale mark 4 of the high-transmission rectifier 1, and the vertical center longitude line 10 of the Luneburg lens reflector 2 aligned with the horizontal scale mark 5 of the high-transmission rectifier 1.

[0044] Based on the obtained horizontal and vertical coordinate values, first rotate the Luneburg lens reflector 2 horizontally. When the horizontal coordinate of the Luneburg lens reflector 2 is aligned with the vertical scale mark 4 of the high-transmission rectifier 1, stop rotating. Then rotate the Luneburg lens reflector 2 vertically. When the vertical coordinate is aligned with the horizontal scale mark 5 of the high-transmission rectifier 1, stop rotating. At this point, the RCS value of the Luneburg lens reflector 2 matches the required RCS value. The adjustment process for both Luneburg lens reflectors 2 is the same. Finally, glue the two Luneburg lens reflectors 2 into each high-transmission rectifier hood and complete the external installation.

[0045] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A military unmanned target drone external RCS modification device, characterized in that: The device includes an RCS modification component symmetrically mounted on the wingtip blocks at both ends of the UAV wing. The RCS modification component includes a high-transmittance rectifier and a Luneburg lens reflector. The Luneburg lens reflector is located inside the high-transmittance rectifier. Both the Luneburg lens reflector and the high-transmittance rectifier have scale lines. The RCS value of the Luneburg lens reflector is obtained by rotating the Luneburg lens reflector to align the horizontal and vertical coordinates corresponding to the RCS value with the scale lines of the high-transmittance rectifier.

2. The military unmanned target drone external RCS modification device according to claim 1, characterized in that: The high-transmittance rectifier includes an upper shell and a lower shell. Both the upper shell and the lower shell have hollow hemispheres inside. When the upper shell and the lower shell are fastened together, the two hollow hemispheres form a spherical bowl. The Luneburg lens reflector is fixed inside the spherical bowl.

3. The military unmanned target drone external RCS modification device according to claim 2, characterized in that: Both the upper and lower shells are provided with ear pieces on their sides, and the two ear pieces are aligned vertically.

4. The military unmanned target drone external RCS modification device according to claim 1, characterized in that: The scale lines of the Luneburg lens reflector include a horizontal center latitude line and a vertical center longitude line.

5. The military unmanned target drone external RCS modification device according to claim 2, characterized in that: The high-transmittance rectifier is an ellipsoidal high-transmittance rectifier cover.

6. The military unmanned target drone external RCS modification device according to claim 5, characterized in that: The scale lines of the high-transmittance rectifier include vertical scale markings and horizontal scale markings. The horizontal scale markings are located on the long axis of the lower shell and symmetrically arranged on both sides of the spherical bowl. The vertical scale markings are located on the short axis of the lower shell and symmetrically arranged on both sides of the spherical bowl.

7. The military unmanned target drone external RCS modification device according to claim 3, characterized in that: The ear piece has multiple connecting through holes.

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