Mobile aircraft test run noise reduction and flow guide facility

Abstract

The utility model relates to the technical field of noise reduction and flow guide facilities, in particular to a movable aircraft test run noise reduction and flow guide facility which comprises stand columns, a group of cross beams are fixedly arranged at the top ends of the stand columns, a connecting frame is fixedly arranged between the cross beams, a fence is fixedly arranged on the outer sides of the cross beams, and a flow guide fence assembly is arranged on one side of the fence. The movable fence assembly is movably arranged on one side of the flow guide fence assembly, the flow guide fence assembly is arranged, and a first layer panel, sound absorption rubber and plastic cotton, a cavity layer, sound insulation cotton and a galvanized color steel plate are arranged in a flow guide fence, so that multiple times of noise reduction can be achieved, and meanwhile the sealing performance of the device can be achieved; it is guaranteed that airflow can be completely guided into the air and cannot be blown out of the diversion facility body, and it is guaranteed that equipment such as personnel and vehicles at the rear end of the diversion facility can safely pass.

Description

Technical Field

[0001] This utility model relates to the technical field of noise reduction and airflow diversion facilities, specifically a mobile aircraft test noise reduction and airflow diversion facility. Background Technology

[0002] Aircraft deflector systems are devices that guide the high-speed, high-temperature exhaust gases emitted by aircraft engines under high thrust into the air, ensuring that people, vehicles, and other facilities in the vicinity of the system are not threatened.

[0003] Existing airflow barriers used in aircraft maintenance companies can cause engine surge during test runs, which can cause significant damage to aircraft engines. These barriers cannot be modified to reduce or eliminate engine surge during test runs. To address these issues, we propose a mobile aircraft test run noise reduction airflow system. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a mobile aircraft test noise reduction and airflow diversion facility.

[0005] The technical solution of this utility model is:

[0006] A mobile aircraft test noise reduction and airflow guiding facility includes a column, a set of crossbeams fixedly installed at the top of the column, a connecting frame fixedly installed between the crossbeams, a barrier fixedly installed on the outside of the crossbeams, an airflow guiding barrier assembly installed on one side of the barrier, and a movable barrier assembly movably installed on one side of the airflow guiding barrier assembly.

[0007] As a preferred technical solution of this utility model: the flow guiding barrier assembly includes multiple horizontal bars, and arc-shaped bars are fixedly provided at both ends of the horizontal bars, and flow guiding barriers are fixedly provided on the front side of the horizontal bars and the arc-shaped bars.

[0008] As a preferred technical solution of this utility model: a support rod is fixedly provided on the rear side of the arc-shaped rod, a first connecting rod is fixedly provided between the support rod and the arc-shaped rod, and a second connecting rod and a third connecting rod are provided at the lower end of the first connecting rod.

[0009] As a preferred technical solution of this utility model: the interior of the flow guide barrier is provided with a first layer panel, which is a 1.2mm stainless steel micro-perforated plate.

[0010] As a preferred technical solution of this utility model: a sound-absorbing rubber and plastic cotton is fixedly provided on one side of the first layer panel, the sound-absorbing rubber and plastic cotton has a size of 50mm, and a cavity layer is fixedly provided on one side of the sound-absorbing rubber and plastic cotton.

[0011] As a preferred technical solution of this utility model: a sound insulation cotton is fixedly provided on one side of the cavity layer, the sound insulation cotton having a size of 40mm, and a galvanized color steel plate is fixedly provided on one side of the sound insulation cotton, the galvanized color steel plate having a size of 1mm.

[0012] As a preferred technical solution of this utility model: the movable enclosure component includes a base, a universal wheel is fixedly provided at the bottom of the base, a plurality of trapezoidal frames are fixedly provided at the end of the base away from the universal wheel, and a baffle is fixedly provided on the side of the trapezoidal frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting up a flow-guiding enclosure component, wherein the flow-guiding enclosure is respectively set with a first layer panel, sound-absorbing rubber and plastic cotton, cavity layer, sound insulation cotton and galvanized color steel plate, can achieve multiple noise reductions while also achieving the sealing performance of this device, ensuring that the airflow can be completely guided into the air and will not be blown out from the flow-guiding enclosure component, ensuring the safe passage of personnel, vehicles and other equipment at the rear of the flow-guiding facility;

[0015] 2. This utility model sets up columns, installs barriers on the columns, and adds a 10-meter-high column every 10 meters at a distance of 0.5 meters behind the flow-guiding barrier component. The barrier panel is made of micro-perforated plate to ensure that the overall structural strength can meet the wind blow of level 7-8 and the wind blow of aircraft test, thus ensuring structural safety.

[0016] 3. This utility model sets up movable barrier components on both sides of the aircraft entrance. The movable barrier components are electrically movable barrier modules. The height of the electric movable modules is 3-4 meters and the length is 5-6 meters. The number of modules is determined based on the size of the largest aircraft. The electric movable modules can automatically position and evacuate, and have an emergency evacuation function, so that personnel, vehicles and other facilities around the facility will not be threatened. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the column structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the flow-guiding enclosure component of this utility model;

[0020] Figure 4 This is a schematic diagram of the support rod structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the mobile enclosure component of this utility model;

[0022] Figure 6 This is a schematic diagram of the flow-guiding enclosure structure of this utility model.

[0023] In the picture:

[0024] 1. Columns; 11. Beams; 12. Connecting frames; 13. Enclosures;

[0025] 2. Traffic flow control enclosure assembly; 21. Horizontal bar; 22. Arc-shaped bar; 23. Traffic flow control enclosure; 231. First layer panel; 232. Sound-absorbing rubber and plastic cotton; 233. Cavity layer; 234. Sound insulation cotton; 235. Galvanized color steel plate; 24. Support rod; 25. First connecting rod; 251. Second connecting rod; 252. Third connecting rod;

[0026] 3. Movable enclosure assembly; 31. Base; 32. Casters; 33. Trapezoidal frame; 34. Baffle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 The present invention will describe the above technical solution in detail through the following embodiments:

[0029] A mobile aircraft test noise reduction and airflow guiding facility includes a column, a set of crossbeams fixedly installed at the top of the column, a connecting frame fixedly installed between the crossbeams, a barrier fixedly installed on the outside of the crossbeams, an airflow guiding barrier assembly installed on one side of the barrier, and a movable barrier assembly movably installed on one side of the airflow guiding barrier assembly. By setting the airflow guiding barrier assembly, the interior of the airflow guiding barrier is respectively set with a first layer panel, sound-absorbing rubber and plastic cotton, a cavity layer, sound insulation cotton and galvanized color steel plate, which can achieve multiple noise reductions while also achieving the sealing performance of the device, ensuring that the airflow can be completely guided into the air and will not be blown out from the airflow guiding barrier assembly, ensuring the safe passage of personnel, vehicles and other equipment at the rear of the airflow guiding facility.

[0030] It should be noted that a 10-meter-high column is added every 10 meters at a distance of 0.5 meters behind the flow control enclosure component, and the enclosure panel is made of micro-perforated plate to ensure that the overall structural strength can withstand the winds of level 7-8 and the winds of aircraft test runs, thus ensuring structural safety.

[0031] Furthermore, the flow-guiding enclosure component includes multiple horizontal bars, with arc-shaped bars fixedly installed at both ends of the horizontal bars. Flow-guiding enclosures are fixedly installed on the front sides of the horizontal bars and arc-shaped bars. By setting the flow-guiding enclosure component, multiple noise reductions can be achieved while also ensuring the sealing performance of the device, guaranteeing that the airflow can be completely guided into the air and will not be blown out from the flow-guiding facility body, ensuring the safe passage of personnel, vehicles, and other equipment at the rear of the flow-guiding facility.

[0032] It is worth noting that the airflow barrier is an arc-shaped panel arranged in a fan shape. Its curvature is consistent with that of the arc-shaped rod. During the aircraft test run, the overall structure of the airflow barrier resonates, achieving the Helmholtz resonator principle (i.e., resonator sound absorber), thereby realizing the first noise reduction function.

[0033] Furthermore, a support rod is fixedly installed on the rear side of the arc-shaped rod, and a first connecting rod is fixedly installed between the support rod and the arc-shaped rod. A second connecting rod and a third connecting rod are installed at the lower end of the first connecting rod. By setting the support rod and the first connecting rod, and the second connecting rod and the third connecting rod at the lower end of the first connecting rod, the guide barrier can be supported and fixed to the ground at the same time.

[0034] Specifically, the first connecting rod, the second connecting rod, and the third connecting rod are all inclined. The angle between the first connecting rod and the second connecting rod is 80 degrees, the angle between the second connecting rod and the support rod is 60 degrees, and the angle between the third connecting rod and the ground is 30 degrees.

[0035] In particular, the guide barrier panels are all fixed by overlapping each other by 40mm to ensure the sealing between the panels.

[0036] Specifically, one end of the second connecting rod and the third connecting rod is fixedly connected to the support rod, and the other end of the second connecting rod and the third connecting rod is fixedly connected to the arc-shaped rod.

[0037] Furthermore, the interior of the traffic flow barrier is equipped with a first layer panel, which is a 1.2mm stainless steel micro-perforated plate. This design adopts the acoustically recognized sound absorption structure principle of perforated plates to achieve a second noise reduction function.

[0038] It should be noted that the bottom of the first layer of the diversion barrier is flush with the ground and is fixed to the ground with expansion bolts to ensure the sealing of the bottom of the diversion facility.

[0039] Furthermore, a sound-absorbing rubber and plastic cotton with a size of 50mm is fixedly installed on one side of the first-layer panel. A cavity layer is fixedly installed on one side of the sound-absorbing rubber and plastic cotton. The sound-absorbing rubber and plastic cotton is both resistive (sound absorption) and resistive (sound insulation), achieving a sound absorption and noise reduction effect, thus achieving the third noise reduction function of the airflow guiding device. The cavity layer allows the engine airflow to pass through the sound-absorbing cotton, reducing the strong noise emitted by its low-frequency airflow, thus achieving the fourth noise reduction function of the airflow guiding device.

[0040] Furthermore, a sound-insulating cotton with a size of 40mm is fixedly installed on one side of the cavity layer, and a galvanized color steel plate with a size of 1mm is fixedly installed on one side of the sound-insulating cotton. By installing the sound-insulating cotton, a fifth layer of noise reduction is formed, and by installing the galvanized color steel plate, a sixth layer of acoustic noise reduction is formed.

[0041] It is worth noting that the sound insulation cotton is solid cotton, which, together with the galvanized color steel plate, ensures that the airflow can be completely guided into the air and will not be blown out from the airflow guide body, thus ensuring the safe passage of personnel, vehicles and other equipment at the rear of the airflow guide.

[0042] Furthermore, the mobile enclosure component includes a base, with casters fixedly installed at the bottom of the base, and multiple trapezoidal frames fixedly installed at the end of the base away from the casters. Baffles are fixedly installed on the sides of the trapezoidal frames. By setting up the mobile enclosure component, an emergency evacuation function can be realized, ensuring that personnel, vehicles and other facilities around the facility are not threatened.

[0043] Specifically, the mobile fencing component is an electrically movable fencing module. The electric movable module is 3-4 meters high and 5-6 meters long, with the number of modules determined based on the size of the largest machine model. The electric movable modules can be automatically positioned and removed.

[0044] Working principle:

[0045] This utility model discloses a mobile aircraft test noise reduction and airflow guiding facility. In use, the mobile enclosure assembly is first opened, and the aircraft is driven into and parked within the area of ​​the airflow guiding enclosure assembly. When the aircraft engine exhausts high-temperature, high-speed gas during a high-thrust test, it passes through the airflow guiding enclosure assembly. The airflow guiding enclosure contains a first-layer panel, sound-absorbing rubber and plastic cotton, a cavity layer, sound-insulating cotton, and galvanized color steel plate. This achieves multiple noise reductions while maintaining the device's sealing performance, ensuring that the airflow is completely guided into the air and not blown out from the airflow guiding enclosure assembly. This ensures safe passage for personnel, vehicles, and equipment at the rear of the airflow guiding facility. Simultaneously, by setting up pillars and installing enclosures on these pillars, with additional pillars every 10 meters at a distance of 0.5 meters behind the airflow guiding enclosure assembly, and using micro-perforated panels, the overall structural strength is guaranteed to withstand winds of force 7-8 and the impact of aircraft test runs, ensuring structural safety. After the test, the mobile enclosure assembly is removed, and the aircraft is driven away.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile aircraft test noise reduction and airflow diversion facility, comprising a column (1), characterized in that: A set of crossbeams (11) is fixedly installed at the top of the column (1), and a connecting frame (12) is fixedly installed between the crossbeams (11). A fence (13) is fixedly installed on the outside of the crossbeams (11), and a flow guiding fence assembly (2) is installed on one side of the fence (13). A movable fence assembly (3) is movably installed on one side of the flow guiding fence assembly (2).

2. The mobile aircraft test noise reduction and airflow diversion facility as described in claim 1, characterized in that: The flow-guiding enclosure assembly (2) includes multiple horizontal bars (21), with arc-shaped bars (22) fixedly installed at both ends of the horizontal bars (21), and flow-guiding enclosures (23) fixedly installed on the front sides of the horizontal bars (21) and the arc-shaped bars (22).

3. A mobile aircraft test noise reduction and airflow diversion facility as described in claim 2, characterized in that: A support rod (24) is fixedly provided on the rear side of the arc-shaped rod (22), and a first connecting rod (25) is fixedly provided between the support rod (24) and the arc-shaped rod (22). A second connecting rod (251) and a third connecting rod (252) are provided at the lower end of the first connecting rod (25).

4. A mobile aircraft test noise reduction and airflow diversion facility as described in claim 2, characterized in that: The guide barrier (23) has a first panel (231) inside, which is a 1.2mm stainless steel micro-perforated plate.

5. A mobile aircraft test noise reduction and airflow diversion facility as described in claim 4, characterized in that: A sound-absorbing rubber and plastic cotton (232) is fixedly provided on one side of the first layer panel (231). The sound-absorbing rubber and plastic cotton (232) has a size of 60mm. A cavity layer (233) is fixedly provided on one side of the sound-absorbing rubber and plastic cotton (232).

6. A mobile aircraft test noise reduction and airflow diversion facility as described in claim 5, characterized in that: A sound insulation cotton (234) is fixedly installed on one side of the cavity layer (233), the sound insulation cotton (234) has a size of 40 mm, and a galvanized color steel plate (235) is fixedly installed on one side of the sound insulation cotton (234), the galvanized color steel plate (235) has a size of 1 mm.

7. A mobile aircraft test noise reduction and airflow diversion facility as described in claim 1, characterized in that: The mobile enclosure assembly (3) includes a base (31), a caster wheel (32) is fixedly provided at the bottom of the base (31), a plurality of trapezoidal frames (33) are fixedly provided at the end of the base (31) away from the caster wheel (32), and a baffle (34) is fixedly provided on the side of the trapezoidal frame (33).

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