Beam former load supporting arm of composite guidance semi-physical simulation system

Abstract

The utility model belongs to the technical field of semi-physical simulation, and particularly relates to a beam synthesizer load supporting arm of a composite guidance semi-physical simulation system, which is suitable for a guided weapon adopting an optical / radio frequency composite guidance system and a seeker of the guided weapon to carry out a semi-physical simulation test. The load supporting arm consists of a supporting frame and a beam synthesizer mounting surface and is used for mounting the beam synthesizer on two outer shafts of the five-axis turntable; meanwhile, it is ensured that an optical path through which an optical target signal generated by the optical target simulation system is projected to the beam synthesizer and reflected into the seeker is coaxial with an optical path through which a radio frequency target signal generated by the radar target simulation system is transmitted into the seeker, and therefore multimode composite guidance simulation is achieved; the problem that an optical target simulation system and a beam synthesizer cannot be installed on two outer shafts of a current five-axis rotary table at the same time is solved. The device is simple in design, effective, practical and high in universality, and has a very good popularization and application space.

Description

Technical Field

[0001] This utility model belongs to the field of hardware-in-the-loop simulation technology, specifically relating to a load support arm for a beam synthesizer in a composite guidance hardware-in-the-loop simulation system. Background Technology

[0002] Optical / RF composite guidance includes guidance systems such as laser / radar composite, infrared / radar composite, and laser / infrared / radar composite. Its hardware-in-the-loop simulation system generally consists of equipment such as a microwave anechoic chamber, a five-axis turntable, a radar target simulation system, an optical target simulation system, a beam synthesizer, a simulation computer, and a test control system. The five-axis turntable has three inner axes that carry the tested composite seeker, simulating the pitch, yaw, and roll motions of a guided weapon during flight. The outer two axes carry an optical target simulation system and a beam combiner, simulating the projectile-target line-of-sight motion. The inner three axes and the outer two axes move together to simulate the entire relative motion between the projectile and the target. The optical target simulation system is used to simulate the radiation characteristics of the target / background in the optical band (laser, visible light, infrared, etc.), generating a dynamic optical scene in real time to provide the tested composite seeker with a common aperture projected optical target signal for detection and tracking. The beam combiner is used to spatially synthesize the radio frequency target signal emitted by the radar target simulation system and the optical target signal emitted by the optical target simulation system, and project it onto the entrance pupil of the tested composite seeker, realizing a semi-physical simulation test of the composite seeker in the loop.

[0003] Traditional five-axis turntables can only support one simulation device, namely an optical target simulation system, on the outer two axes. This system can be simply mounted on the load disks of the outer two axes of the turntable. However, when conducting hardware-in-the-loop simulation experiments for composite guidance, in addition to mounting the optical target simulation system, a beam combiner also needs to be installed on the outer two axes of the five-axis turntable. The beam combiner is typically Φ512mm in size and is quite large. To ensure the normal operation of the hardware-in-the-loop simulation experiment, a beam combiner load support arm needs to be designed to mount the beam combiner. At the same time, it is necessary to ensure that the optical target signal generated by the optical target simulation system is projected onto the beam combiner and reflected into the seeker head, and that the optical path of the radio frequency target signal generated by the radar target simulation system is transmitted into the seeker head is coaxial with the optical path of the radio frequency target signal generated by the radar target simulation system, thereby realizing multi-mode composite guidance simulation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem this invention aims to solve is: how to provide a beam combiner load support arm for an optical / RF composite guidance hardware-in-the-loop simulation system, used to mount the beam combiner onto the two outer axes of a five-axis turntable, while ensuring that the optical target signal generated by the optical target simulation system is projected onto the beam combiner and reflected into the seeker head, and that the optical path of the RF target signal generated by the radar target simulation system is transmitted into the seeker head is coaxial, thereby realizing multi-mode composite guidance simulation and solving the problem that the optical target simulation system and beam combiner cannot be mounted simultaneously on the two outer axes of a current five-axis turntable.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a load support arm for a beam combiner in a composite guidance hardware-in-the-loop system. The load support arm for the beam combiner in the composite guidance hardware-in-the-loop system consists of a support frame and a beam combiner mounting surface. The support frame provides a basic support structure, and the beam combiner mounting surface is mechanically connected to the beam combiner.

[0008] The load support arm is a non-metallic structural component with high rigidity and strength, and is made of fiberglass material.

[0009] The load support arm is designed as a hollow structure, and the part connecting it to the two outer axes of the five-axis turntable is designed as a rectangle with 12 M8 screw holes symmetrically opened.

[0010] The outer envelope dimensions of the beam combiner load support arm are set to 1325mm × 707mm × 560mm.

[0011] The beam combiner load support arm has a height of 1325mm, a width of 560mm at the top and 707mm at the bottom.

[0012] The beam combiner load support arm mounting surface is tilted at 45° relative to the horizontal plane to ensure that the optical target signal reflected by the beam combiner is coaxial with the radio frequency target signal transmitted through the beam combiner.

[0013] The beam combiner has a size of Φ512mm and a mounting surface of Φ565mm, on which four M8 screw holes are symmetrically opened for mounting the beam combiner.

[0014] (III) Beneficial Effects

[0015] Compared with existing technologies, this invention provides a beam combiner load support arm for an optical / RF composite guidance hardware-in-the-loop simulation system. It is suitable for conducting hardware-in-the-loop simulation tests on guided weapons and their seekers employing optical / RF composite guidance systems. The load support arm is used to mount the beam combiner on the two outer axes of a five-axis turntable, ensuring that the optical target signal generated by the optical target simulation system, reflected from the beam combiner, and enters the seeker's entrance pupil is coaxial with the RF target signal generated by the radar target simulation system. This achieves multi-band composite guidance simulation and solves the problem that the two outer axes of a current five-axis turntable cannot simultaneously mount both the optical target simulation system and the beam combiner. The device is simple, effective, practical, and highly versatile, with significant potential for widespread application.

[0016] This invention has achieved excellent results in the hardware-in-the-loop simulation test of a certain type of radio frequency / optical composite guided missile, and has played an important role in evaluating the performance indicators of the seeker and guided weapon system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the beam synthesizer load support arm system.

[0018] Figure 2 Design drawing of the load support arm dimensions for the beam synthesizer.

[0019] Figure 3 This is the optical path diagram of the composite target signal. Detailed Implementation

[0020] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0021] To solve the above-mentioned technical problems, this utility model provides a load support arm for a beam combiner in a composite guidance hardware-in-the-loop system. The load support arm for the beam combiner in the composite guidance hardware-in-the-loop system consists of a support frame and a beam combiner mounting surface. The support frame provides a basic support structure, and the beam combiner mounting surface is mechanically connected to the beam combiner.

[0022] The load support arm is a non-metallic structural component with high rigidity and strength, and is made of fiberglass material.

[0023] The load support arm is designed as a hollow structure, and the part connecting it to the two outer axes of the five-axis turntable is designed as a rectangle with 12 M8 screw holes symmetrically opened.

[0024] The outer envelope dimensions of the beam combiner load support arm are set to 1325mm × 707mm × 560mm.

[0025] The beam combiner load support arm has a height of 1325mm, a width of 560mm at the top and 707mm at the bottom.

[0026] The beam combiner load support arm mounting surface is tilted at 45° relative to the horizontal plane to ensure that the optical target signal reflected by the beam combiner is coaxial with the radio frequency target signal transmitted through the beam combiner.

[0027] The beam combiner has a size of Φ512mm and a mounting surface of Φ565mm, on which four M8 screw holes are symmetrically opened for mounting the beam combiner.

[0028] Example 1

[0029] The beam combiner load support arm of the optical / RF composite guidance hardware-in-the-loop system consists of two parts: a support frame and a beam combiner mounting surface. Figure 1 As shown. The support frame provides the basic support structure; the beam combiner mounting surface is used for mechanical connection with the beam combiner.

[0030] The beam combiner load support arm is a non-metallic structural component with high rigidity and strength, made of fiberglass. It connects the turntable to the beam combiner, providing support during turntable rotation and movement. Based on the five-axis turntable's load capacity and dimensions (the outer two axes of the five-axis turntable typically carry a 50kg load, with a load space of Φ580mm*1000mm), the beam combiner load support arm is made of lightweight, high-rigidity material. Simultaneously, considering radar-transparent materials (i.e., materials that transmit radio frequency target signals), radar-transparent materials must be used. Material parameter comparisons are shown in the table below.

[0031] Table 1 Material parameters of load support arm

[0032]

[0033]

[0034] The data above shows that epoxy fiberglass and alumina ceramics have low dielectric constants. Epoxy fiberglass has low density but also low stiffness, while alumina ceramics has high stiffness but high density. Considering parameters such as elastic modulus and dielectric constant, and given that alumina ceramics have a much higher density than fiberglass, and considering the large volume of the load support arm and the difficulty in molding alumina ceramics, epoxy fiberglass was chosen as the substrate for the beam combiner load support arm (it exhibits the most balanced performance in terms of key parameters such as density, dielectric constant, dielectric loss, and Poisson's ratio).

[0035] Since the beam combiner is Φ512mm in size and the load space of the five-axis turntable is Φ580mm*1000mm, the outer envelope dimensions of the beam combiner load support arm are designed to be 1325mm×707mm×560mm. Detailed dimensions are as follows: Figure 2 As shown.

[0036] To reduce the load weight of the five-axis turntable, the beam combiner load support arm is designed as a hollow structure, and the part connecting to the two outer axes of the five-axis turntable is designed as a rectangle with 12 M8 screw holes symmetrically opened.

[0037] Furthermore, the load support arm is designed with a height of 1325mm, a width of 560mm at the top, and 707mm at the bottom.

[0038] Furthermore, the beam combiner mounting surface is tilted at 45° relative to the horizontal plane to ensure that the optical target signal reflected by the beam combiner is coaxial with the radio frequency target signal transmitted through the beam combiner, and the composite target signal optical path is as follows: Figure 3 As shown;

[0039] Furthermore, since the beam combiner is Φ512mm in size, the beam combiner mounting surface is designed to be Φ565mm, with four M8 screw holes symmetrically opened on it for mounting the beam combiner.

[0040] Example 2

[0041] In this embodiment, during the hardware-in-the-loop simulation test of a guided weapon employing a radio frequency / optical composite seeker, the beam combiner needs to be mounted on the two outer axes of a five-axis turntable. The specific implementation method is as follows:

[0042] 1) Install the test composite seeker onto the three axes of the five-axis turntable;

[0043] 2) Install the beam combiner load support arm onto the two outer axes of the five-axis turntable and tighten it with M8 screws;

[0044] 3) Mount the beam combiner onto the beam combiner mounting surface of the load support arm and tighten it with M8 screws;

[0045] 4) Power on the five-axis turntable, find zero, and rotate it to the initial angle for launching the guided weapon;

[0046] 5) At this point, the preparatory work for the test is complete, and a formal semi-physical simulation test can be carried out according to the working sequence of the guided weapon.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A load support arm for a beam synthesizer in a composite guidance hardware-in-the-loop simulation system, characterized in that, The beam combiner load support arm of the composite guidance hardware-in-the-loop system consists of a support frame and a beam combiner mounting surface. The support frame provides the basic support structure, and the beam combiner mounting surface is mechanically connected to the beam combiner.

2. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The load support arm is a non-metallic structural component, made of fiberglass.

3. The beam synthesizer load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The load support arm is designed as a hollow structure, and the part connecting it to the two outer axes of the five-axis turntable is designed as a rectangle with 12 M8 screw holes symmetrically opened.

4. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The outer envelope dimensions of the beam combiner load support arm are set to 1325mm × 707mm × 560mm.

5. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 4, characterized in that, The beam combiner load support arm has a height of 1325mm, a width of 560mm at the top and 707mm at the bottom.

6. The beam synthesizer load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The mounting surface of the beam combiner load support arm is tilted at 45° relative to the horizontal plane to ensure that the optical target signal reflected by the beam combiner is coaxial with the radio frequency target signal transmitted through the beam combiner.

7. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The beam combiner has a size of Φ512mm and a mounting surface of Φ565mm, on which four M8 screw holes are symmetrically opened for mounting the beam combiner.

8. The beam synthesizer load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The load support arm is used to mount the beam combiner onto the two outer axes of the five-axis turntable.

9. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The load support arm ensures that the optical target signal generated by the optical target simulation system is projected onto the beam synthesizer and reflected into the seeker, and that the optical path of the radio frequency target signal generated by the radar target simulation system is transmitted into the seeker, thus realizing multi-mode composite guidance simulation.

10. The beam combiner load support arm of the composite guidance hardware-in-the-loop simulation system as described in claim 1, characterized in that, The load support arm solves the problem that the optical target simulation system and beam synthesizer cannot be installed simultaneously on the outer two axes of the current five-axis turntable.

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