Aircraft structure capable of active switching between low observability and deception modes

Abstract

An aircraft structure capable of active switching between low observability and deception modes according to the present invention may comprise: a radio wave absorption unit for absorbing incident radio waves; a reflection plate in contact with one surface of the radio wave absorption unit or separated therefrom at an interval; and an actuator for driving the reflection plate.

Description

Low-observable and deceptive active switching aircraft structure

[0001] The present invention relates to an aircraft structure, and more specifically, to an aircraft structure for switching between low-observable and deceptive active modes.

[0002]

[0003] Referring to Fig. 1, conventional decoys are designed to have a large RCS (Radar Cross Section, RCS, σo) during mission execution, and there is no change in the RCS during mission execution. In Fig. 1, the conventional decoy operates with a radar cross-section that is pre-set as the RCS.

[0004] That is, the incident radar wave entering the decoy has a constant reflection characteristic based on a pre-set RCS value. However, the reflection intensity may change depending on the angle at which the radar incident wave enters the decoy.

[0005] The conventional method for changing the RCS of decoys involves tuning the airframe structure on the ground prior to the mission or installing separate devices before deployment. In this case, since they operate with a large, predetermined RCS, they can be detected by radar from a long distance, potentially giving the enemy time to respond.

[0006] In addition, if the RCS can be changed during operation, effective operations can be carried out; however, if operations are conducted at a predetermined RCS, operational efficiency may decrease.

[0007]

[0008] The objective of the present invention is to provide an aircraft structure capable of actively switching between low-observable and deception modes to solve the aforementioned problem.

[0009]

[0010] The low-observable and deceptive active switching aircraft structure of the present invention for achieving the above-mentioned purpose may include a radio wave absorbing part that absorbs incident radio waves, a reflector that contacts or is separated from one surface of the radio wave absorbing part at a distance, and a actuator that drives the reflector.

[0011] Here, the radio wave absorbing part may be a composite material having a radio wave absorbing function.

[0012]

[0013] By utilizing the low-observable and active switching aircraft structure of the present invention, the decoy can disrupt radar networks during enemy infiltration, acquire radar location information, and improve the survivability of friendly forces against missile threats. In addition, since existing technology can be utilized as is, it can also contribute to reducing the manufacturing cost of decoys that have expendable characteristics.

[0014]

[0015] FIG. 1 is a drawing showing an aircraft operation method according to the prior art.

[0016] FIG. 2 is a drawing showing a low-observable and active switching aircraft structure according to an embodiment of the present invention.

[0017] FIG. 3 is a diagram showing the operation method of a low-observable and active switching aircraft structure according to an embodiment of the present invention.

[0018] FIG. 4 is a diagram showing a method of operation of an aircraft having a low-observable and active deception aircraft structure according to an embodiment of the present invention.

[0019]

[0020] The advantages and features of the present invention, and the techniques for achieving them, will become clear by referring to the embodiments described below in conjunction with the accompanying drawings. However, the present invention is not limited to the presented embodiments and can be implemented in various forms.

[0021] This embodiment is provided to ensure that the description of the present invention is complete and to fully inform those skilled in the art of the content of the invention.

[0022] Meanwhile, the terms used in this specification are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise. As used in this specification, 'comprise' and 'comprising' do not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0023] Additionally, the same reference numerals shown across each drawing refer to the same components.

[0024] and known features and techniques to clarify the description of the described embodiments of the present invention

[0025] A detailed explanation of may be omitted.

[0026] FIGS. 2 and 3 are drawings illustrating the structure and operation method of a low-observable and active switching aircraft according to an embodiment of the present invention.

[0027] Referring to the drawings, the low-observable and deceptive active switching aircraft structure (200) of the present invention for achieving the above-mentioned purpose may include a radio wave absorbing part (210) that absorbs incident radio waves, a reflector (220) that is in contact with or separated from one surface of the radio wave absorbing part, and a driver (230) that drives the reflector (220).

[0028] Here, the radio wave absorbing part (210) may be a composite material having a radio wave absorbing function.

[0029] The radio wave absorption structure (210) utilizes a reflector (220, Ground). In FIG. 2, the radio wave absorption structure (200) is composed of a radio wave absorption part (210) and a reflector (220) for round-trip phase shift through reflection.

[0030] When the radio wave absorbing part (210) and the reflector (220) are combined in the radio wave absorption mode of FIG. 2, they can function as a radio wave absorbing structure, and at this time, stealth performance is realized. This is applied to the stealth mode.

[0031] In the reflection mode of FIG. 2, the radio wave absorbing part (210) and the reflector (220) are separated, and the radio wave absorption performance is rapidly degraded and the size of the reflected wave increases, resulting in the loss of stealth performance. This is applied to the deception mode.

[0032] Referring to Fig. 3, the principle of the stealth / deception mode active conversion method applying the principle of Fig. 2 can be understood.

[0033] As shown in FIG. 3, the reflector and the actuator (230) are connected so that in stealth mode, they are in close contact with the radar-absorbing composite material (210), and in deception mode, the reflector (220) is separated and used as a radar reflector.

[0034] The radio wave absorbing part (210) shown in Fig. 3 is designed to withstand the load flowing through the skin sufficiently, and the reflector (220) is applied with a thickness such that no change in shape occurs due to the movement of the actuator (230).

[0035] In Fig. 3, if the reflector is separated from the radio wave absorption section (210), the radio wave absorption performance of the radio wave absorption structure is lost, and as a result, the RCS increases, resulting in a deception mode.

[0036] In Fig. 3, when the reflector is attached to the radar absorption part, the radar absorption performance of the radar absorption structure is restored, and the RCS is reduced, resulting in a stealth mode.

[0037] Using Fig. 4, an aircraft operation method to which the low-observable and deceptive active switching aircraft structure of the present invention is applied is explained.

[0038] Decoys are essential for disrupting radar networks during enemy infiltration, acquiring radar location information, and enhancing the survivability of friendly forces against missile threats. While the operation of decoys is a tactically important element in manned-unmanned hybrid systems, active switching between stealth and decoy modes is required to ensure tactical efficiency.

[0039] When infiltrating in stealth mode, it prevents prior detection, and upon successful infiltration deep into enemy territory, it can switch to deception mode to increase tactical confusion of the enemy and enhance radar network jamming.

[0040] In addition, since existing technology can be utilized as is, it can also contribute to reducing the production cost of decoys with consumable characteristics.

[0041]

[0042] (Explanation of symbols)

[0043] 200: Structure of Low Observable and Deceptive Active Switching Aircraft

[0044] 210 : Radio wave absorbing unit

[0045] 220 : Reflector

[0046] 230 : Actuator

Claims

1. A radio wave absorbing part that absorbs incident radio waves; A reflector plate that contacts one surface of the above-mentioned radio wave absorbing part or is separated at a distance; and A driver that drives the above reflector Low-observable and deceptive active switching aircraft structure including 2. In Paragraph 1, Low-observable and deceptive active switching aircraft structure, characterized in that the above-mentioned radar absorbing part is a composite material having a radar absorbing function.

Images