CN219077516U

CN219077516U - Externally hung unmanned aerial vehicle target characteristic refitting device and unmanned aerial vehicle

Info

Publication number: CN219077516U
Application number: CN202320112552.6U
Authority: CN
Inventors: 严咸浩; 叶尚军; 周平
Original assignee: Hangzhou Pastar Technology Co ltd
Current assignee: Hangzhou Pastar Technology Co ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-05-26
Anticipated expiration: 2033-01-18

Abstract

The utility model provides an external unmanned aerial vehicle target characteristic modification device and an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles. The drag reduction design of the RCS enhancement assembly is fully considered, and the air resistance caused by externally hung RCS enhancement equipment is reduced to the minimum. The low-electromagnetic-loss filling and low-electromagnetic-loss shell is adopted, so that the loss of electromagnetic waves is reduced to the minimum, and the actual service performance of the RCS enhancement equipment is ensured. The anchor ear is used as a mechanical interface, and compared with a slotting installation mode, the anchor ear has higher installation accuracy by adopting mechanical connection, so that the whole pneumatic performance of the target aircraft is ensured.

Description

Externally hung unmanned aerial vehicle target characteristic refitting device and unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an externally-hung unmanned aerial vehicle target characteristic refitting device and an unmanned aerial vehicle.

Background

In order to meet the requirements of different weaponry on the electromagnetic target characteristics of the target drone, the target drone needs to increase or decrease radar scattering area in a specific direction. When the radar scattering area (RCS) of the target aircraft cannot meet the index requirement, RCS enhancement equipment is required to be additionally arranged to enhance the radar scattering area. Typical reinforcement requirements include forward, lateral and aft reinforcement, where the forward direction can be reinforced by incorporating RCS reinforcing devices within the wave-transparent nose cap; the lateral direction can be enhanced by adding RCS enhancement equipment in the wave-transparent machine body.

However, for tail enhancement, the enhancement is generally performed by adopting a plug-in RCS enhancement device. The currently mainstream external-hanging RCS enhancement equipment only considers the structural addition, but does not fully consider the implementation of RCS enhancement at lower aerodynamic performance cost. At present, a mode of grooving and gluing a composite foam piece with a protruding end is generally adopted in the structural form, and the main defects are that: the external-hanging RCS enhancement equipment does not fully consider pneumatic drag reduction; the accuracy of the cementing installation mode is poor, and the appearance of the target drone is possibly asymmetric, so that the performance of the target drone is affected; the mode of gluing installation is installed and is dismantled inconvenient, probably causes the target drone damage, has put forward this application to above-mentioned defect.

Disclosure of Invention

The utility model aims to provide an externally-hung unmanned aerial vehicle target characteristic refitting device and an unmanned aerial vehicle, solve the problems, and provide a tail-to-RCS enhancement scheme with lower pneumatic performance cost.

In order to solve the problems, the utility model provides an external unmanned aerial vehicle target characteristic refitting device which comprises a tail-oriented RCS enhancement component and a connecting mechanism, wherein the tail-oriented RCS enhancement component comprises a low-electromagnetic-loss shell, the low-electromagnetic-loss shell is in a fusiform shape, one end of the low-electromagnetic-loss shell is blunt, the other end of the low-electromagnetic-loss shell is pointed, a corner reflector is arranged in the low-electromagnetic-loss shell, the connecting mechanism is arranged on the low-electromagnetic-loss shell, and low-electromagnetic-loss filling is arranged in the low-electromagnetic-loss shell.

According to an embodiment of the utility model, the slenderness ratio of the low electromagnetic loss shell is greater than four.

According to an embodiment of the utility model, the connecting mechanism is a hoop arranged on the low-electromagnetic-loss shell.

According to one embodiment of the utility model, the low electromagnetic loss shell is provided with a mounting notch, and the anchor ear is arranged in the mounting notch.

According to one embodiment of the utility model, the depth of the mounting notch is equal to the thickness of the anchor ear.

According to an embodiment of the utility model, the low electromagnetic loss housing is a glass fiber housing.

According to an embodiment of the utility model, the low electromagnetic loss filling is foam filling.

Unmanned aerial vehicle, unmanned aerial vehicle includes foretell external unmanned aerial vehicle target characteristic repacking device, unmanned aerial vehicle's wing is connected with coupling mechanism.

The utility model has the beneficial effects that the drag reduction design of the RCS enhancement component is fully considered, and the air resistance caused by externally hung RCS enhancement equipment is reduced to the minimum. The low-electromagnetic-loss filling and low-electromagnetic-loss shell is adopted, so that the loss of electromagnetic waves is reduced to the minimum, and the actual service performance of the RCS enhancement equipment is ensured. The hoop is used as a mechanical interface, and the hoop is arranged at the position on the appearance of the RCS reinforcing component, so that the air resistance is further reduced, and the RCS reinforcing component is convenient to install and detach. Compared with a slotting installation mode, the mechanical connection mode has higher installation accuracy, and the overall pneumatic performance of the target drone is guaranteed.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the structure of an external unmanned aerial vehicle target feature retrofit device when installed on a wing;

fig. 2 is a schematic structural diagram of a caudal RCS reinforcing component.

Detailed Description

The following description is presented to enable one skilled in the art to practice the utility model and is provided only to enable the utility model. The embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the utility model.

The external unmanned aerial vehicle target characteristic refitting device comprises a tail-oriented RCS enhancement component 2 and a connecting mechanism, as shown in fig. 1 and 2, wherein the tail-oriented RCS enhancement component 2 comprises a low-electromagnetic-loss shell 20, the low-electromagnetic-loss shell 20 is in a shuttle shape, so that a low-resistance appearance is formed, compared with the external appearance resistance of the traditional external-oriented RCS enhancement device, the external-type unmanned aerial vehicle target characteristic refitting device is better in aerodynamic performance, preferably, one end of the low-electromagnetic-loss shell 20 is blunt, the other end of the low-electromagnetic-loss shell is pointed, the slenderness ratio is larger than 4, the resistance reduction effect is further improved, the resistance increment is reduced to the minimum while a corner reflector with the size as large as possible is additionally arranged, the low-electromagnetic-loss shell 20 is made of a material with low electromagnetic loss and high electromagnetic wave passing rate, such as a high-wave-transparent glass fiber shell, a quartz fiber shell and the like, the low-electromagnetic-loss shell 20 is provided with a corner reflector, the corner reflector is low in cost, the effect is good, the low-electromagnetic-loss shell 20 can be replaced by a dielectric ball, the radiation antenna can also be used for active enhancement, the connecting mechanism is arranged on the low-electromagnetic-loss shell 20, the low-electromagnetic-loss shell 20 is provided with a low-electromagnetic-loss filling wing 22, the low-electromagnetic-loss foam wing enhancement device is used for maintaining the low-electromagnetic-loss foam wing 20, the effect is kept to be low in the electromagnetic-loss foam, and the low-loss shell 20, the electromagnetic-loss enhancement function has the effect, and the low electromagnetic-loss enhancement effect is kept low.

Electromagnetic waves pass through the shell with low electromagnetic loss and are filled, and the aim of enhancing the tail direction RCS is achieved through the reflection of the internal corner reflectors.

The tail-oriented RCS reinforcing component can be sized according to the added corner reflectors, and is applied to different RCS retrofitting requirements.

As shown in fig. 1 and 2, the connecting mechanism is a hoop 3 arranged on the low-electromagnetic-loss shell 20, and can be fixed with the wing in a mode of clamping by a buckle or bolting.

As shown in fig. 2, the low electromagnetic loss shell 20 is provided with a mounting notch 4, the anchor ear 3 is arranged in the mounting notch 4, the depth of the mounting notch 4 is equal to the thickness of the anchor ear 3, the anchor ear can be abutted without steps, and the resistance increment is further reduced.

Unmanned aerial vehicle, unmanned aerial vehicle include foretell external unmanned aerial vehicle target characteristic repacking device, as fig. 1, unmanned aerial vehicle's wing 1 is connected with coupling mechanism to with external unmanned aerial vehicle target characteristic repacking device and unmanned aerial vehicle according to on unmanned aerial vehicle.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model are susceptible to any variations and modifications without departing from the principles.

Claims

1. External unmanned aerial vehicle target characteristic repacking device, its characterized in that: including tail to RCS reinforcing component (2) and coupling mechanism, tail to RCS reinforcing component (2) include low electromagnetic loss casing (20), low electromagnetic loss casing (20) are shuttle, and wherein one end is blunt, and the other end is the tip, be equipped with corner reflector (21) in low electromagnetic loss casing (20), coupling mechanism sets up on low electromagnetic loss casing (20), be equipped with low electromagnetic loss packing (22) in low electromagnetic loss casing (20).

2. The external unmanned aerial vehicle target feature retrofit device of claim 1, wherein: the slenderness ratio of the low electromagnetic loss shell (20) is greater than four.

3. The external unmanned aerial vehicle target feature retrofit device of claim 1 or 2, wherein: the connecting mechanism is a hoop (3) arranged on the low-electromagnetic-loss shell (20).

4. The external unmanned aerial vehicle target feature retrofit device of claim 3, wherein: the low-electromagnetic-loss shell (20) is provided with a mounting notch (4), and the anchor ear (3) is arranged in the mounting notch (4).

5. The external unmanned aerial vehicle target feature retrofit device of claim 4, wherein: the depth of the installation notch (4) is equal to the thickness of the anchor ear (3).

6. The external unmanned aerial vehicle target feature retrofit device of any of claims 1, 2, 4, 5, wherein: the low electromagnetic loss housing (20) is a fiberglass housing.

7. The external unmanned aerial vehicle target feature retrofit device of claim 6, wherein: the low electromagnetic loss fill (22) is a foam fill.

8. An unmanned aerial vehicle, its characterized in that: the unmanned aerial vehicle comprises the externally-hung unmanned aerial vehicle target characteristic modification device according to any one of claims 1-7, and the wing (1) of the unmanned aerial vehicle is connected with a connecting mechanism.