CN220391523U - C-shaped guide wall for wide-organism ground test vehicle - Google Patents

Abstract

The utility model provides a C-shaped guide wall for a wide-organism ground test, which comprises an arc-shaped section guide wall, wherein the arc-shaped section guide wall comprises a wall body and a bracket for supporting the wall body, the wall body is arranged in an arc shape along the length direction of the wall body, and the arc length of the arc-shaped section guide wall is 90769-129669mm; the chord width of the arc-shaped section guide wall is 86509-121115mm, the width of the wide body machine body is not less than 4.72m, the air flow generated by the outermost engine of the airplane with the diffusion angle of +/-35 degrees can be fully covered, and the air flow is prevented from impacting staff or buildings behind the guide wall when the test is performed, so that the safety of the test is kept.

Description

C-shaped guide wall for wide-organism ground test vehicle

Technical Field

The utility model relates to the field of aviation equipment, in particular to a C-shaped guide wall for a wide-organism ground test vehicle.

Background

When the civil aircraft tests on the ground, a large amount of high-temperature high-speed air flow is generated at the tail of the aircraft, and noise generated when the aircraft tests on the ground can disturb the people, so that the aircraft is sound pollution. The existing civil aircraft comprises two types of wide-body aircraft and narrow-body aircraft, wherein the narrow-body aircraft is a single-aisle passenger aircraft with the width of the aircraft body being less than 4.72 meters, the number of seats in each row in a passenger cabin is not more than 6, the wide-body aircraft is a single-aisle passenger aircraft with the width of the aircraft body being not less than 4.72 meters, and two channels are arranged in the passenger cabin, and the two types of aircraft have different application scenes due to different width parameters of the two types of aircraft, for example, the wide aircraft is more biased to be loaded with containerized goods, and the flow direction of air flow sprayed out from the tail of the aircraft is changed by using a guide wall generally; the original guide wall is linearly arranged, and the diffusion angle of the air flow output by the tail nozzle of the aircraft engine is +/-35 degrees, and when the incident air flow is reflected in the guide wall, the reflected air flow flows to the side surface of the aircraft along the direction far away from the aircraft as shown in the figure 1; thereby causing impact to staff or buildings at two sides of the guide wall.

On the basis, the guide wall is arranged in an arc shape, and the number of the guide wall is 201510332465.1 in Chinese patent application; patent document with publication day 2017.10.10 discloses a noise reduction guide wall for an aircraft ground test vehicle; the guide wall is arranged in a curve in the length direction and surrounds the outer side of the air flow emitted when the aircraft tests, the guide wall comprises a wall body which is connected to the ground foundation in an anchoring manner, the windward surface of the wall body is in an arc shape which can guide the air flow obliquely upwards into the air, the leeward surface of the wall body is connected with a supporting truss in an anchoring manner, and the bottom of the supporting truss is connected to the ground foundation in an anchoring manner; the wall body sequentially comprises a stainless steel micropore plate, a sound absorption plate, a sound insulation plate, a cavity layer and a back sealing plate from the windward side to the leeward side.

However, the length of the arc-shaped guide wall is not limited in the prior art, and then after the air flow output by the generator is reflected by the arc-shaped guide wall, a part of the air flow passes over the guide wall from two sides of the guide wall, so that the air flow is impacted to staff or a building behind the guide wall; after the other part of air flow is reflected by the arc-shaped guide wall, the air flow still flows to the side surface of the aircraft, so that the impact is caused to staff or buildings at the two sides of the guide wall; so that the existing guide wall can not completely cover the air flow with the diffusion angle of +/-35 degrees; when the existing guide wall is used for ground test, the potential safety hazard is great, and if the arc length and chord width of the arc guide wall are too long, the occupied area is large, and the installation is inconvenient.

Disclosure of Invention

The utility model provides a C-shaped guide wall for a wide-organism ground test vehicle, which can fully cover air flow generated by an engine at the outermost side of an airplane with a diffusion angle of +/-35 degrees, so that personnel in a safety area can not be impacted by the air flow.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the C-shaped guide wall for the wide-organism-area test comprises an arc-shaped section guide wall, wherein the arc-shaped section guide wall comprises a wall body and a bracket for supporting the wall body, the wall body is arranged in an arc shape along the length direction of the wall body, and the arc length of the arc-shaped section guide wall is 90769-129669mm; the chord width of the guide wall of the arc section is 86509-121115mm, and the width of the wide body machine body is not less than 4.72m.

According to the arrangement, through specific parameter setting of the arc length and chord width, the chord width is more than 18 times of the wide body machine body, the whole arc length and chord width is not too large, so that the occupied area is large, and because the arc length and chord length of the arc section guide wall are larger than the approximate 19 times of the wide body machine body, a large number of safety distances of the machine body are reserved on two sides of the machine body, the outermost air flow from the diffusion angle can be completely covered on two sides, namely, the reflected air flow can not be close to an airplane; and then can not cause the air current to strike to staff or building in safe region, guarantee the security of taking a trial run when taking a trial run.

Further, the outer arc radius of the arc-shaped section guide wall is 133800mm, and the inner arc radius of the arc-shaped section guide wall is 130000mm.

By the arrangement, the arc length is determined through the outer arc radius and the inner arc radius, so that the wide machine body can meet the arc length setting requirement.

Further, the arc width of the arc section guide wall is 3800mm.

The arc width is determined through the outer arc radius and the inner arc radius, and the wide machine body can meet the arc length setting requirement.

Further, the arc length of the arc-shaped section guide wall is 101574mm, and the chord width of the arc-shaped section guide wall is 96337mm.

The arc length and chord width can meet the safety requirement of the A330 wide machine body.

Further, the arc length of the arc-shaped section guide wall is 121025mm, and the chord width of the arc-shaped section guide wall is 113620mm.

The arc length and chord width can meet the safety requirement of the B747 wide machine body.

Further, the arc length of the arc-shaped section guide wall is 129669mm, and the chord width of the arc-shaped section guide wall is 121115mm.

The arc length and chord width can meet the safety requirement of an A380 wide machine body.

Further, the arc length of the arc-shaped section guide wall is 95091mm, and the chord width of the arc-shaped section guide wall is 90459mm.

The arc length and chord width can meet the safety requirement of the body with the width of B767-300.

Further, the support includes arc skeleton, and arc skeleton sets up along the direction of height arc of wall body, and the inside decurrent arc of arc skeleton sets up, and the engine of wide organism produces the emission air current that the air current produced of the outside under the biggest diffusion angle for the engine of wide organism is the emission air current that the air current of the outside is along wall body length direction formation under the biggest diffusion angle.

The device is characterized in that the device comprises an arc-shaped cavity and an arc-shaped framework, wherein the arc-shaped cavity and the arc-shaped framework are arranged through the arc-shaped guide wall, reflected air flow formed by the arc-shaped guide wall can come out from the upper end and two sides, and the outermost air flow under the maximum diffusion angle can be led out from the safety areas on the two sides.

Drawings

FIG. 1 is a schematic reflection of wide body engine airflow in a linear guide wall.

Fig. 2 is a schematic diagram of a380 wide body machine in example 1 for test run.

FIG. 3 is a schematic reflection of the engine airflow of a wide body engine in the present utility model.

Fig. 4 is a top view of an arc segment guide wall.

Fig. 5 is a side view of an arcuate segment guide wall.

FIG. 6 is a left view airflow analysis model diagram of the arc-shaped section guide wall of the utility model.

FIG. 7 is a front view of the flow guide wall of the arc segment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

As shown in fig. 1-5; a C-shaped guide wall for a wide-organism floor test comprises an arc-shaped section guide wall 1.

Example 1.

As shown in fig. 2 and 3, the arc length B1 of the arc-shaped section guide wall is 129669mm, and the chord width A1 of the arc-shaped section guide wall is 121115mm; the outer arc radius D1 of the arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

And determining the chord width B1 of the arc-shaped section guide wall by the sum of the span length J1 of the two wings of the airplane and the safety distance M1 reserved by the two wings extending outwards respectively. The preset safety distance M is smaller than 30000mm, and has different values according to different models.

The end position of the arc-shaped section guide wall is determined through chord width B1, the engine of the wide engine body generates the reflected air flow generated by the engine of the wide engine body after encountering the arc-shaped section under the maximum diffusion angle on the outer side of the wing of the corresponding wide engine body, specifically, the air flow Z1 generated by the engine of the wide engine is provided with a normal Y1 perpendicular to the end part of the arc-shaped section guide wall at the intersection point of the arc-shaped section guide wall, and the reflected air flow Z2 of the air flow generated by the engine of the aircraft is determined through the normal Y2.

The engine of wide organism produces the reflection air current that produces outside air current after meetting the arc section under the biggest diffusion angle and is located the inboard of first safety line, and first safety line is located the straight line that the both ends of arc section guide wall extend to aircraft nose direction along the length direction of aircraft, specifically is equipped with the first safety line Y3 that extends along the length direction of aircraft on the both ends of arc section guide wall, is safe region in the outside of first safety line Y3, the reflection air current Z2 of the air current that the engine of aircraft produced is located the inboard of first safety line Y3.

The intersection point of the extended line of the tail port of the APU passing through the airplane and the guide wall of the arc section is provided with a second auxiliary line Y2, and the second auxiliary line Y2 is perpendicular to the length direction of the airplane; the arc length A1 of the guide wall of the arc section is determined by the included angle alpha between the second auxiliary line Y2 and the reflected air flow Z2, and the angle alpha is more than or equal to 90 degrees and less than 180 degrees.

The arrangement ensures that the chord width of the arc-shaped section guide wall is determined by the safety distance of the outward extension of the two wings of the airplane, so that the arc-shaped section guide wall can block the air flow generated by the airplane, the engine of the wide machine body generates the reflected air flow which is generated by the outermost air flow after encountering the arc-shaped section at the maximum diffusion angle and is positioned at the outer side of the wing of the corresponding wide machine body, the air flow reflected back after the outermost air flow encounters the arc-shaped section guide wall at the maximum diffusion angle can not have excessive influence on the wing of the wide machine body, and the reflected air flow is also positioned at the inner side of the first safety line so as not to have excessive influence on personnel or buildings positioned at one side of the wide machine body, the reflected air flow generated by the air flow in the outermost air flow under the maximum diffusion angle is closer to the machine body of the wide body machine, so that the larger air flow can be led out from the upper end through the arc-shaped section guide wall, and a small part of the reflected air flow can flow out from two sides under the driving of the emitted air flow, so that the outermost air flow under the maximum diffusion angle is positioned in a safety area, and a small part of the reflected air flow flowing out from two sides can flow out from the safety area under the driving of the outermost air flow under the maximum diffusion angle, so that the length of the arc-shaped section guide wall can cover the reflected air flow with the diffusion angle of +/-35 degrees, and the reflected air flow approaches to the plane; and then can not cause the air current to strike to staff or building in safe region, guarantee the security of taking a trial run when taking a trial run.

The embodiment is compatible with a wide body machine with the model A380 for test run.

Taking A380 as an example, the total length I1 of the A380 wide body machine is 72727mm, the span length J1 is 79625mm, and the outlet airflow diffusion angle K of the engine tail nozzle is +/-35 degrees; when the A380 wide body machine is subjected to ground test, the distance L between the tail port of the APU of the A380 wide body machine and the guide wall of the arc section is 15000mm; the distance O between the front nose wheel stop line of the A380 wide body machine and the arc-shaped section guide wall is 82600mm.

The size of the C-shaped guide wall is set; the outer arc radius D1 of the preset arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

And setting the chord width of the arc section guide wall in the C-shaped guide wall according to the size of the A380 wide body machine. The chord width B1 of the arc-shaped section guide wall required by the test of the A380 wide body machine is 121115mm through the length 79625mm of the span length of the A380 wide body machine, the length 25022mm of the left reserved safety distance M and the length 25022mm of the right reserved safety distance M. The arc length is 129669mm by measuring the chord width, the position of the center of the arc length and the position of the reflected air flow formed under the maximum diffusion angle.

As shown in fig. 4 and 5, the arc-shaped section guide wall comprises a wall body 1 and a bracket 2 for supporting the wall body 1; the length direction of the wall body 1 is formed by connecting more than two diversion noise reduction assemblies 3, the top view of the wall body 1 is in arc-shaped arrangement, the diversion noise reduction assemblies 3 are in the prior art, and the bracket 2 comprises an arc-shaped framework 21, upright posts 22 and a supporting assembly; the diversion noise reduction assembly is arranged on the arc-shaped framework. One end of the upright post 22 is connected with the arc-shaped framework 21; the upright post 22 and the arc-shaped framework 21 are obliquely arranged; the arc framework 21 is arranged to extend downwards and inwards along the height direction of the arc framework to form an arc shape, and the arc framework extends along the length direction of the upright post 22; the distance between the upright post 22 and the arc-shaped framework 21 is gradually increased; the support component is connected between the upright 22 and the arc-shaped framework 21; a fixing piece 211 is arranged at the bottom end of the arc-shaped framework 21; in use, the fixing member 211 and one end of the post 22 are fixed to the ground. The support assembly comprises a first support 231, a second support 232 and a third support 233; triangular structures are formed between the first support 231 and the second support 232, and between the second support 232 and the third support 233. The support is thus stable.

The arc-shaped framework is supported by the upright posts which are obliquely arranged; the support is stable; the arc-shaped framework can resist the impact of wake flow; the shaking caused by insufficient supporting force on the arc-shaped framework is avoided; and thus causes interference with resonance.

The air flow of the engine acts on the arc-shaped section guide wall, and a part of the air flow flows along the height direction of the arc-shaped section guide wall; the other part of the air flow flows along the length direction of the guide wall of the arc section.

Example 2.

As shown in fig. 2 and 3, the arc length A1 of the arc-shaped section guide wall is 101574mm, and the chord width B1 of the arc-shaped section guide wall is 96337mm; the outer arc radius D1 of the arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

The wide body machine with the models of A300, A330, B787 and B787-8 is compatible with the test run of the wide body machine.

Taking an A300 wide body machine as an example, the total machine length of the A300 wide body machine I1 is 54080mm, the span length J1 is 44840mm, and the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees; when the A300 wide body machine is subjected to ground test, the distance L between the tail port of the APU of the A300 wide body machine and the guide wall of the arc section is 15000mm; the distance O between the front nose wheel stop line of the A300 wide body machine and the arc-shaped section guide wall is 63413mm.

The size of the C-shaped guide wall is set; the outer arc radius D1 of the preset arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

And setting the chord width of the arc section guide wall in the C-shaped guide wall according to the size of the A300 wide body machine. The chord width B1 of the arc-shaped section guide wall required by the test of the A300 wide body machine is 92424mm through the span length J1 of the A300 wide body machine being 44840mm, the length 23792mm of the left reserved safety distance M and the length 23792mm of the right reserved safety distance M.

Taking an A330 wide body machine as an example, the total machine length of the A330 wide body machine is 63688mm, the span length is 60304mm, the diffusion angle of the output airflow of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 18016.5mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the A330 wide body machine is 96337mm.

Taking a B787 wide body machine as an example, the total machine length of the B787 wide body machine is 55916mm, the span length is 59997mm, the diffusion angle of the output airflow of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 17193mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B787 wide body machine is 94383mm.

Taking a B787-8 wide body machine as an example, the total length of the B787-8 wide body machine is 55910mm, the span length is 60120mm, the outlet airflow diffusion angle of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 17131.5mm; and according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B787-8 wide body machine is 94383mm.

Because the wingspan length of the A330 wide body machine is longer than that of the A300 wide body machine, the B787 wide body machine and the B787-8 wide body machine; the difference value between the chord width required by the test run of the A300 wide body machine, the B787 wide body machine and the B787-8 wide body machine and the chord width required by the test run of the A330 wide body machine is smaller than 4000mm; the chord widths required by the test run of the A300 wide body machine, the B787-8 wide body machine and the A330 wide body machine are relatively close, so that the dimension of the C-shaped guide wall in the embodiment 2 is compatible with the test run of the A300 wide body machine, the B787-8 wide body machine and the A330 wide body machine.

As shown in fig. 4 and 5, the arc-shaped section guide wall comprises a wall body 1 and a bracket 2 for supporting the wall body 1; the length direction of the wall body 1 is formed by connecting more than two diversion noise reduction assemblies 3, the top view of the wall body 1 is in arc-shaped arrangement, the diversion noise reduction assemblies 3 are in the prior art, and the bracket 2 comprises an arc-shaped framework 21, upright posts 22 and a supporting assembly; the diversion noise reduction assembly is arranged on the arc-shaped framework. One end of the upright post 22 is connected with the arc-shaped framework 21; the upright post 22 and the arc-shaped framework 21 are obliquely arranged; the arc framework 21 is arranged to extend downwards and inwards along the height direction of the arc framework to form an arc shape, and the arc framework extends along the length direction of the upright post 22; the distance between the upright post 22 and the arc-shaped framework 21 is gradually increased; the support component is connected between the upright 22 and the arc-shaped framework 21; a fixing piece 211 is arranged at the bottom end of the arc-shaped framework 21; in use, the fixing member 211 and one end of the post 22 are fixed to the ground. The support assembly comprises a first support 231, a second support 232 and a third support 233; triangular structures are formed between the first support 231 and the second support 232, and between the second support 232 and the third support 233. The support is thus stable.

The arc-shaped framework is supported by the upright posts which are obliquely arranged; the support is stable; the arc-shaped framework can resist the impact of wake flow; the shaking caused by insufficient supporting force on the arc-shaped framework is avoided; and thus causes interference with resonance.

The air flow of the engine acts on the arc-shaped section guide wall, and a part of the air flow flows along the height direction of the arc-shaped section guide wall; the other part of the air flow flows along the length direction of the guide wall of the arc section.

Example 3.

As shown in fig. 2 and 3, the arc length A1 of the arc-shaped section guide wall is 121025mm, and the chord width B1 of the arc-shaped section guide wall is 113620mm; the outer arc radius D1 of the arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

The wide body machine with the compatible model numbers of A340-300, A350-900, B777, B747 and B787-9 is used for trial run.

Taking a model A340-300 wide body machine as an example, the total machine length of the A340-300 wide body machine I1 is 64205mm, the span length J1 is 60334mm, and the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees; when the A340-300 wide body machine is subjected to ground test, the distance L between the tail port of the APU of the A340-300 wide body machine and the guide wall of the arc section is 15000mm; the distance O between the front nose wheel stop line of the A340-300 wide body machine and the arc-shaped section guide wall is 72534mm.

The size of the C-shaped guide wall is set; the outer arc radius D1 of the preset arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

And setting the chord width of the arc section guide wall in the C-shaped guide wall according to the size of the A340-300 wide body machine. The chord width B1 of the arc-shaped section guide wall required by the test of the wide body machine A340-300 is 107921mm through the span length J1 of the wide body machine A340-300 being 60334 mm+the length 23793.5mm of the safety distance M reserved on the left side+the length 23793.5mm of the safety distance M reserved on the right side.

Taking an A350 wide body machine as an example, the total machine length of the A350 wide body machine I1 is 66261mm, the span length J1 is 64750mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 17737.5mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the A350 wide body machine is 100225mm.

Taking an A350-900 wide body machine as an example, the total machine length of the A350-900 wide body machine I1 is 65240mm, the span length J1 is 64750mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 17737.5mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the A350-900 wide body machine is 100225mm.

Taking a B777 wide body machine as an example, the total machine length of the B777 wide body machine I1 is 73028mm, the span length J1 is 64800mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 19643mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B777 wide body machine is 104086mm.

Taking a B747 wide body machine as an example, the total machine length of the B747 wide body machine I1 is 70700mm, the span length J1 is 64955mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 24332.5mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B747 wide body machine is 113620mm.

Taking a B787-9 wide body machine as an example, the total machine length of the B787-9 wide body machine I1 is 62000mm, the span length J1 is 62080mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 18102mm; and according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B787-9 wide body machine is 98284mm.

Because the wingspan length of the B777 broadbody machine is longer than that of the A340-300 broadbody machine, the A350-900 broadbody machine, the B747 broadbody machine and the B787-9 broadbody machine; the difference value between the chord width required by the test run of the A340-300 wide body machine, the A350-900 wide body machine, the B747 wide body machine and the B787-9 wide body machine and the chord width required by the test run of the B777 wide body machine is smaller than 15000mm; the chord widths required for the test run of the 340-300 wide body machine, the A350-900 wide body machine, the B747 wide body machine, the B787-9 wide body machine and the B777 wide body machine are relatively close, so that the U-shaped guide wall in the embodiment 3 has the dimensions compatible with the 340-300 wide body machine, the A350-900 wide body machine, the B747 wide body machine, the B787-9 wide body machine and the B777 wide body machine for the test run.

As shown in fig. 4 and 5, the arc-shaped section guide wall comprises a wall body 1 and a bracket 2 for supporting the wall body 1; the length direction of the wall body 1 is formed by connecting more than two diversion noise reduction assemblies 3, the top view of the wall body 1 is in arc-shaped arrangement, the diversion noise reduction assemblies 3 are in the prior art, and the bracket 2 comprises an arc-shaped framework 21, upright posts 22 and a supporting assembly; the diversion noise reduction assembly is arranged on the arc-shaped framework. One end of the upright post 22 is connected with the arc-shaped framework 21; the upright post 22 and the arc-shaped framework 21 are obliquely arranged; the arc framework 21 is arranged to extend downwards and inwards along the height direction of the arc framework to form an arc shape, and the arc framework extends along the length direction of the upright post 22; the distance between the upright post 22 and the arc-shaped framework 21 is gradually increased; the support component is connected between the upright 22 and the arc-shaped framework 21; a fixing piece 211 is arranged at the bottom end of the arc-shaped framework 21; in use, the fixing member 211 and one end of the post 22 are fixed to the ground. The support assembly comprises a first support 231, a second support 232 and a third support 233; triangular structures are formed between the first support 231 and the second support 232, and between the second support 232 and the third support 233. The support is thus stable.

The arc-shaped framework is supported by the upright posts which are obliquely arranged; the support is stable; the arc-shaped framework can resist the impact of wake flow; the shaking caused by insufficient supporting force on the arc-shaped framework is avoided; and thus causes interference with resonance.

The air flow of the engine acts on the arc-shaped section guide wall, and a part of the air flow flows along the height direction of the arc-shaped section guide wall; the other part of the air flow flows along the length direction of the guide wall of the arc section.

Example 4

As shown in fig. 2 and 3, the arc length A1 of the arc-shaped section guide wall is 95091mm, and the chord width B1 of the arc-shaped section guide wall is 90459mm; the outer arc radius D1 of the arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

The embodiment is compatible with a wide body machine with model numbers of A310, B767-200 and B767-300 for test run.

Taking a model A310 wide body machine as an example, the total machine length of the A310 wide body machine I1 is 46665mm, the span length J1 is 43900mm, and the output airflow diffusion angle K of the engine tail nozzle is +/-35 degrees; when the A310 wide body machine is subjected to ground test, the distance L between the tail port of an APU of the A310 wide body machine and the guide wall of the arc section is 15000mm; the distance O between the front nose wheel stop line of the A310 wide body machine and the arc-shaped section guide wall is 54994mm.

The size of the C-shaped guide wall is set; the outer arc radius D1 of the preset arc-shaped section guide wall is 133800mm, the inner arc radius E of the arc-shaped section guide wall is 130000mm, and the arc width F of the arc-shaped section guide wall is 3800mm.

And setting the chord width of the arc section guide wall in the C-shaped guide wall according to the size of the A310 wide body machine. The chord width B1 of the arc-shaped section guide wall required by the test of the A310 wide body machine is 86509mm through the span length J1 of the A310 wide body machine being 43900mm, the length 21304.5mm of the left reserved safety distance M and the length 21304.5mm of the right reserved safety distance M.

Taking a B767-200 wide body machine as an example, the total length of the B767-200 wide body machine I1 is 47240mm, the span length J1 is 47549mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 19480mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B767-200 wide body machine is 86509mm.

Taking a B767-300 wide body machine as an example, the total length of the B767-300 wide body machine I1 is 54940mm, the span length J1 is 47039mm, the output airflow diffusion angle K of the tail nozzle of the engine is +/-35 degrees, and the length of the reserved safety distance M is 21710mm; according to the calculation mode of the first embodiment, the chord width of the arc section guide wall required by the test run of the B767-300 wide body machine is 90459mm.

Because the wingspan length of the B767-200 wide body machine is longer than that of the A310 wide body machine and the B767-300 wide body machine; the difference value between the chord width required by the test run of the A310 wide body machine and the B767-300 wide body machine and the chord width required by the test run of the B767-300 wide body machine is smaller than 4000mm; the chord widths required by the test run of the A310 wide body machine, the B767-300 wide body machine and the B767-300 wide body machine are relatively close, so that the U-shaped guide wall in the embodiment 4 is compatible with the A310 wide body machine, the B767-300 wide body machine and the B767-300 wide body machine in size for the test run.

As shown in fig. 4 and 5, the arc-shaped section guide wall comprises a wall body 1 and a bracket 2 for supporting the wall body 1; the length direction of the wall body 1 is formed by connecting more than two diversion noise reduction assemblies 3, the top view of the wall body 1 is in arc-shaped arrangement, the diversion noise reduction assemblies 3 are in the prior art, and the bracket 2 comprises an arc-shaped framework 21, upright posts 22 and a supporting assembly; the diversion noise reduction assembly is arranged on the arc-shaped framework. One end of the upright post 22 is connected with the arc-shaped framework 21; the upright post 22 and the arc-shaped framework 21 are obliquely arranged; the arc framework 21 is arranged to extend downwards and inwards along the height direction of the arc framework to form an arc shape, and the arc framework extends along the length direction of the upright post 22; the distance between the upright post 22 and the arc-shaped framework 21 is gradually increased; the support component is connected between the upright 22 and the arc-shaped framework 21; a fixing piece 211 is arranged at the bottom end of the arc-shaped framework 21; in use, the fixing member 211 and one end of the post 22 are fixed to the ground. The support assembly comprises a first support 231, a second support 232 and a third support 233; triangular structures are formed between the first support 231 and the second support 232, and between the second support 232 and the third support 233. The support is thus stable.

The arc-shaped framework is supported by the upright posts which are obliquely arranged; the support is stable; the arc-shaped framework can resist the impact of wake flow; the shaking caused by insufficient supporting force on the arc-shaped framework is avoided; and thus causes interference with resonance.

The air flow of the engine acts on the arc-shaped section guide wall, and a part of the air flow flows along the height direction of the arc-shaped section guide wall; the other part of the air flow flows along the length direction of the guide wall of the arc section.

Table 1 is a table of correspondence between the dimensions of different machine-type widgets and the chord width of the guide wall corresponding to the arc section required for the test run. The units of length in Table 1 are all mm.

TABLE 1

As shown in fig. 6 and 7, for analyzing the airflow generated correspondingly by the present utility model, as shown in fig. 6, the portion a in fig. 6 is the upper airflow portion of the arc-shaped flow guiding wall, and the airflow of the portion a is larger, because the high-speed airflow ejected by the engine flows through the steel plate flow guiding wall, the airflow is raised first and then flows backward to the rear due to the effect of diffusing and guiding the wind by the wall body, so that the wake vortex area at the rear part of the steel plate flow guiding wall is pressed and diffused backward, the low-speed area is stable, conditions are created for placing objects behind the flow guiding wall, and the rear flow field is natural wind, thereby having no influence on the rear parking of the aircraft, staff and vehicles.

As shown in FIG. 7, the wind speed distribution diagram of the windward side of the guide wall can be seen, for example, the part B is two side parts of the guide wall with arc-shaped sections, and as can be seen from the diagram, when the high-speed airflow hits the guide wall, the airflow uniformity is better, and the airflow is more uniformly diffused to the middle and two sides.

Claims (8)

1. A C-shaped guide wall for a wide-organism ground test vehicle is characterized in that: the wall body is arranged in an arc shape along the length direction of the wall body, and the arc length of the arc-shaped section guide wall is 90769-129669mm; the chord width of the guide wall of the arc section is 86509-121115mm, and the width of the wide body machine body is not less than 4.72m.

2. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the outer arc radius of the arc-shaped section guide wall is 133800mm, and the inner arc radius of the arc-shaped section guide wall is 130000mm.

3. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the arc width of the arc section guide wall is 3800mm.

4. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the arc length of the arc-shaped section guide wall is 101574mm, and the chord width of the arc-shaped section guide wall is 96337mm.

5. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the arc length of the arc-shaped section guide wall is 121025mm, and the chord width of the arc-shaped section guide wall is 113620mm.

6. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the arc length of the arc-shaped section guide wall is 129669mm, and the chord width of the arc-shaped section guide wall is 121115mm.

7. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the arc length of the arc-shaped section guide wall is 95091mm, and the chord width of the arc-shaped section guide wall is 90459mm.

8. The C-shaped guide wall for a wide body floor test vehicle of claim 1, wherein: the support includes arc skeleton, and arc skeleton sets up along the direction of height arc of wall body, and the inside decurrent arc of arc skeleton sets up, and the engine of wide organism produces the emission air current that the air current produced of the outside under the biggest diffusion angle for the engine of wide organism is the emission air current that the air current of the outside formed along wall body length direction under the biggest diffusion angle.