Composite distortion generator

Abstract

The invention relates to the technical field of aero-engines, in particular to a composite distortion generator which comprises a main case and a distortion plate. The main case is arranged at an engine inlet, an airflow channel is formed in the main case, and one end of the airflow channel communicates with the engine inlet; the distortion plate is arranged in the airflow channel in a surrounding mode, a vent groove is formed in the distortion plate, and the two sides of the vent groove communicate with the two ends of the airflow channel correspondingly; a plurality of gas guide channels are formed in the distortion plate, the gas outlet ends of the gas guide channels communicate with the gas flow channel, and the gas inlet ends of the gas guide channels are connected with a gas guiding pipe for conveying gas with the preset temperature. Hot air can be directly introduced into the air flow channel and is driven to be directly mixed with inlet air flow, so that the temperature of the inlet air flow is quickly increased, qualified air flow temperature distortion and air flow pressure distortion can be generated at the same time, and the accuracy of a test result is ensured; and a tester can accurately control whether the engine has qualified stable working capability of resisting airflow distortion.

Description

Technical Field

[0001] The invention belongs to the technical field of aeroengines, and in particular relates to a composite distortion generator. Background Art

[0002] In scientific research experiments, aircraft engines need to carry out airflow distortion tests using a distortion generator, so as to verify through the test whether the engine has the qualified stable working ability to resist airflow distortion.

[0003] Existing airflow distortion generally includes airflow pressure distortion and airflow temperature distortion. Among them, the distortion generator that heats the airflow by electric heating method can realize the airflow temperature distortion test of the engine, and the distortion generator that drives the airflow to flow through the orifice plate can realize the airflow pressure distortion test of the engine. However, with the complexity of the aviation environment, the engine usually has airflow pressure distortion and airflow temperature distortion at the same time in actual operation. Therefore, it is necessary to conduct corresponding tests on the composite distortion of airflow temperature and airflow pressure during the test. However, the existing distortion generator has a low efficiency in heating the airflow, so it is difficult to produce qualified airflow temperature distortion and airflow pressure distortion at the same time, which greatly affects the accuracy of the final test results, so that the test personnel cannot accurately control whether the engine has qualified stable working ability to resist airflow distortion.

[0004] Therefore, it is difficult for existing distortion generators to simultaneously generate qualified airflow temperature distortion and airflow pressure distortion. Summary of the invention

[0005] In view of the above problems, the present invention proposes a composite distortion generator, comprising:

[0006] A main casing is arranged at the engine inlet, an air flow channel is opened in the main casing, and one end of the air flow channel is connected to the engine inlet;

[0007] A distortion plate is disposed around the airflow channel, and a ventilation groove is provided on the distortion plate, and two sides of the ventilation groove are respectively connected to two ends of the airflow channel;

[0008] A plurality of air guide channels are provided in the distortion plate, the air outlet ends of the air guide channels are communicated with the air flow channel, and the air inlet ends of the air guide channels are connected to an air duct for conveying gas at a preset temperature.

[0009] In some specific embodiments, the distortion plate includes:

[0010] A flange ring, surrounding the airflow channel and detachably disposed on the main casing;

[0011] At least two vertical ribs are respectively arranged on the inner ring of the flange ring along the radial direction of the flange ring, and one end of the vertical rib close to the flange ring penetrates the flange ring along the radial direction of the flange ring;

[0012] Every two adjacent vertical ribs enclose one of the ventilation grooves;

[0013] The air guide channel is opened in the vertical rib plate, and one end of the air guide channel close to the flange ring forms an air inlet end of the air guide channel, and one end of the air guide channel away from the flange ring forms an air outlet end of the air guide channel.

[0014] In some specific embodiments, the distortion plate further comprises:

[0015] The annular rib plate is coaxially arranged with the flange ring, and the outer ring of the annular rib plate is connected to one end of at least two adjacent vertical rib plates away from the flange ring.

[0016] In some specific embodiments, at least one of the vertical ribs has an end away from the flange ring extending by a preset length in a radial direction of the flange ring away from the flange ring.

[0017] In some specific embodiments, two sides of at least one of the vertical ribs extend by a preset width along the circumference of the flange ring.

[0018] In some specific embodiments, the annular rib between at least two adjacent vertical ribs extends to a preset thickness along the radial direction of the flange ring.

[0019] In some specific embodiments, at least two pipe joints are provided on the outer ring of the flange ring, which are respectively connected to at least two of the vertical ribs through sealing gaskets;

[0020] The air inlet end of the air guide channel is communicated with an end of the pipe joint close to the flange ring, and the air duct is communicated with an end of the pipe joint away from the flange ring.

[0021] In some specific embodiments, a plurality of vent holes are provided on a side of the vertical rib plate close to the engine inlet;

[0022] The air outlet end of the air guide channel is communicated with the air flow channel through the air vent.

[0023] In some specific embodiments, the overall casing includes:

[0024] A first casing and a second casing, wherein two sides of the flange ring are detachably connected to the first casing and the second casing respectively;

[0025] One end of the second casing away from the first casing is connected to the engine inlet through an air intake casing;

[0026] The first casing, the second casing and the air intake casing are connected in sequence to form the air flow channel.

[0027] In some specific embodiments, an air intake cap is provided in the air flow channel along the axial direction of the first casing, the second casing and the air intake casing.

[0028] Compared with the prior art, the composite distortion generator of the present invention has at least the following advantages: the inlet airflow can be delivered to the engine inlet through the airflow channel of the main casing, and the inlet airflow flowing through the airflow channel can be made to pass through the ventilation groove through the distortion plate arranged in the airflow channel, thereby driving the pressure of the inlet airflow to be distorted, and at the same time, the hot air can be directly introduced into the airflow channel through the air guide channel arranged in the distortion plate, thereby driving the hot air to be directly mixed with the inlet airflow, thereby quickly raising the temperature of the inlet airflow, thereby quickly realizing the temperature distortion of the inlet airflow. By increasing the heating rate of the inlet airflow, qualified airflow temperature distortion and airflow pressure distortion can be simultaneously generated, thereby ensuring the accuracy of the final test results, so that the test personnel can accurately control whether the engine has qualified stable working ability to resist airflow distortion.

[0029] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of a composite distortion generator in an embodiment of the present invention is shown;

[0032] Figure 2 A partial side cross-sectional schematic diagram of a composite distortion generator in an embodiment of the present invention is shown;

[0033] Figure 3 A schematic diagram of a distortion plate in an embodiment of the present invention is shown;

[0034] Figure 4A cross-sectional schematic diagram of a distortion plate in an embodiment of the present invention is shown;

[0035] Figure 5 A schematic cross-sectional view of a vertical rib plate in an embodiment of the present invention is shown;

[0036] Figure 6 A partial enlarged schematic diagram of a distortion plate in an embodiment of the present invention is shown;

[0037] Figure 7 A schematic diagram of flow field simulation of a composite distortion generator in an embodiment of the present invention is shown;

[0038] Figure 8 for Figure 6 Schematic diagram of total pressure distribution in the cross section where the distortion plate is located;

[0039] Fig. 9 A curve schematic diagram showing the relationship between the airflow temperature distortion index and the ratio of introduced hot air in an embodiment of the present invention is shown.

[0040] In the figure, 100, the main casing; 110, the first casing; 120, the second casing; 130, the air intake casing; 200, the distortion plate; 210, the flange ring; 221, the vent; 220, the vertical rib plate; 230, the annular rib plate; 240, the pipe joint; 300, the air intake cap cover. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1 The present invention provides a composite distortion generator, including: a main casing 100 and a distortion plate 200. The main casing 100 is arranged at the engine inlet, and an air flow channel is provided in the main casing 100, one end of which is connected to the engine inlet. The distortion plate 200 is arranged in the air flow channel in a surrounding manner, and a ventilation groove is provided on the distortion plate 200, and both sides of the ventilation groove are respectively connected to the two ends of the air flow channel. A plurality of air guide channels are provided in the distortion plate 200, and the air outlet end of the air guide channel is connected to the air flow channel, and the air inlet end of the air guide channel is connected to an air bleed pipe that transports gas at a preset temperature.

[0043] Specifically, the main casing 100 is arranged at the engine inlet and one end of the main casing 100 is connected to the engine inlet, so that one end of the airflow channel arranged in the main casing 100 can be connected to the engine inlet, and the end of the main casing 100 away from the engine inlet is used to introduce the inlet airflow, so that the introduced inlet airflow can reach the engine inlet through the airflow channel. Among them, the distortion plate 200 is arranged around the airflow channel along the circumference of the main casing 100, and a ventilation groove is opened on the distortion plate 200. The two sides of the ventilation groove are respectively arranged toward the two ends of the airflow channel, and are both connected to the airflow channel, so that the inlet airflow introduced into the main casing 100 can pass through the ventilation groove in the process of moving along the airflow channel, and then the inlet airflow can be distorted in airflow pressure under the action of the ventilation groove. At the same time, the distortion plate 200 is also provided with an air guide channel, the outlet end of the air guide channel extends to the direction away from the inner wall of the main casing 100 and is connected to the air guide channel, the inlet end of the air guide channel extends to the outside of the main casing 100 in the direction close to the inner wall of the main casing 100 and is connected to the bleed pipe arranged outside the main casing 100, and the bleed pipe can be used to transport hot air into the air guide channel, so that the hot air reaches the air guide channel along the air guide channel, and can directly contact and mix with the inlet airflow passing through the airflow channel, so as to quickly increase the temperature of the inlet airflow, thereby quickly realizing the airflow temperature distortion of the inlet airflow. By increasing the heating rate of the inlet airflow, qualified airflow temperature distortion and airflow pressure distortion can be generated at the same time, thereby ensuring the accuracy of the final test results, so that the test personnel can accurately control whether the engine has qualified stable working ability to resist airflow distortion.

[0044] In some specific embodiments of the present invention, referring to Figure 3 and Figure 4 The distortion plate 200 includes: a flange ring 210 and at least two vertical ribs 220. The flange ring 210 is detachably arranged on the main casing 100 around the air flow channel. At least two vertical ribs 220 are respectively arranged on the inner ring of the flange ring 210 along the radial direction of the flange ring 210, and one end of the vertical rib 220 close to the flange ring 210 is penetrated in the flange ring 210 along the radial direction of the flange ring 210. Each two adjacent vertical ribs 220 enclose one of the ventilation grooves. The air guide channel is opened in the vertical rib 220, and the end of the air guide channel close to the flange ring 210 forms the air inlet end of the air guide channel, and the end of the air guide channel away from the flange ring 210 forms the air outlet end of the air guide channel.

[0045] Specifically, refer to Figure 3, the flange ring 210 can be detachably arranged on the side wall of the outer periphery of the main casing 100 and is arranged around the circumference of the main casing 100. There are at least two vertical ribs 220, and both vertical ribs 220 are arranged on the inner ring of the flange ring 210 along the radial direction of the flange ring 210. One end of the vertical rib 220 is connected to the inner wall of the flange ring 210 and is penetrated from the flange ring 210 to the outside of the flange ring 210. Among them, the two side groove edges of the ventilation groove are respectively formed by each adjacent two vertical ribs 220, so that each adjacent two vertical ribs 220 are combined to form a ventilation groove. When the inlet airflow flowing through the airflow channel passes between the two adjacent vertical ribs 220, it means that the inlet airflow passes through the ventilation groove, so that the inlet airflow can be distorted in airflow pressure under the intervention of the vertical ribs 220. And, referring to Figure 4 The interior of the vertical rib 220 is a hollow structure, so that an air guide channel is formed through the hollow structure inside the vertical rib 220. The end of the hollow structure away from the flange ring 210 is the air outlet end of the air guide channel and is connected to the air flow channel, so that hot air can reach the air flow channel. The end of the hollow structure close to the flange ring 210 is the air inlet end of the air guide channel and is connected to the outside of the main casing 100, so that the air duct can be connected to the vertical rib 220 and transport hot air to the air inlet end of the air guide channel.

[0046] In some specific embodiments of the present invention, referring to Figure 3 The distortion plate 200 further includes: an annular rib plate 230 . The annular rib plate 230 is coaxially arranged with the flange ring 210 , and the outer ring of the annular rib plate 230 is connected to one end of at least two adjacent vertical rib plates 220 away from the flange ring 210 .

[0047] Specifically, the annular rib plate 230 is arranged in the air flow channel and is coaxially arranged with the flange ring 210. When the number of the vertical rib plates 220 is more than two, the outer ring of the annular rib plate 230 will be connected to at least two adjacent vertical rib plates 220, and the end of the vertical rib plate 220 away from the flange ring 210 is connected to the outer ring of the annular rib plate 230, so that the pressure distortion intensity of the air flow passing through the ventilation groove corresponding to the annular rib plate 230 can be improved by the arrangement of the annular rib plate 230, which is convenient for designing according to actual test conditions and ensuring the accuracy of the final test results.

[0048] In some specific embodiments of the present invention, referring to Figure 3 At least one vertical rib 220 extends by a preset length along the radial direction of the flange ring 210 in a direction away from the flange ring 210 at one end away from the flange ring 210 .

[0049] Specifically, when there are multiple vertical ribs 220, according to actual test conditions, one end of at least one vertical rib 220 away from the flange ring 210 extends a preset length along the radial direction of the flange ring 210 in a direction away from the flange ring 210, thereby increasing the space occupied by the vertical rib 220 in the air flow channel along the radial direction of the flange ring 210, and further improving the air flow pressure distortion intensity passing through the ventilation groove corresponding to the vertical rib 220, so as to facilitate design according to actual test conditions, thereby ensuring the accuracy of the final test results.

[0050] It should be noted that, generally, in order to ensure the convenience of processing, after the end of any vertical rib 220 away from the flange ring 210 extends a preset length along the radial direction of the flange ring 210 in the direction away from the flange ring 210, the annular rib 230 will no longer be connected to the end of the vertical rib 220 away from the flange ring 210.

[0051] In some specific embodiments of the present invention, referring to Figure 3 Both sides of at least one vertical rib 220 extend along the circumference of the flange ring 210 by a preset width.

[0052] Specifically, when there are multiple vertical ribs 220, according to actual test conditions, both sides of at least one vertical rib 220 extend outside the two sides of the vertical rib 220 along the circumference of the flange ring 210 by a preset width, thereby increasing the space occupied by the vertical rib 220 in the air flow channel along the circumference of the flange ring 210, and further increasing the air flow pressure distortion intensity passing through the ventilation groove corresponding to the vertical rib 220, so as to facilitate design according to actual test conditions, thereby ensuring the accuracy of the final test results.

[0053] In some specific embodiments of the present invention, referring to Figure 6 The annular rib plate 230 between at least two adjacent vertical rib plates 220 extends along the radial direction of the flange ring 210 to a preset thickness.

[0054] Specifically, when a ring rib plate 230 is provided and the ring rib plate 230 is connected to more than two vertical rib plates 220, according to actual test conditions, one side of a portion of the ring rib plate 230 located between at least two adjacent vertical rib plates 220 extends radially along the flange ring 210 by a preset thickness, thereby increasing the space occupied by this portion of the ring rib plate 230 in the air flow channel in the radial direction of the flange ring 210, and further increasing the air flow pressure distortion intensity passing through the ventilation groove corresponding to this portion of the ring rib plate 230, so as to facilitate design according to actual test conditions, thereby ensuring the accuracy of the final test results.

[0055] In some specific embodiments of the present invention, referring to Figure 2At least two pipe joints 240 are arranged on the outer ring of the flange ring 210, and are respectively connected to at least two vertical ribs 220 through sealing gaskets. The air inlet end of the air guide channel is connected to the end of the pipe joint 240 close to the flange ring 210, and the air duct is connected to the end of the pipe joint 240 away from the flange ring 210.

[0056] Specifically, at least two through-holes are provided on the flange ring 210, and at least two pipe joints 240 are provided on the outer ring of the flange ring 210, and the number of through-holes is in one-to-one correspondence with the number of vertical ribs 220 and the number of pipe joints 240. The two ends of the through-holes are respectively located on the inner ring and the outer ring of the flange ring 210, and one end of the vertical rib 220 is inserted into the corresponding through-hole by the inner ring of the flange ring 210, and one end of the corresponding pipe joint 240 is inserted into the corresponding through-hole by the outer ring of the flange ring 210, so that the end of the vertical rib 220 inserted into the through-hole can be connected with the end of the corresponding pipe joint 240 inserted into the same through-hole, and the other end of the pipe joint 240 is connected to the air duct, and then the air intake end of the air guide channel and the air duct are connected through the pipe joint 240, so as to introduce hot air into the air flow channel. Among them, one end of the vertical rib 220 inserted in the through hole is connected to one end of the corresponding pipe joint 240 inserted in the same through hole through a sealing gasket. The setting of the sealing gasket can prevent the transported hot air from leaking.

[0057] In some specific embodiments of the present invention, referring to Figure 5 , a plurality of vents 221 are provided on the side of the vertical rib 220 close to the engine inlet. The air outlet end of the air guide channel is connected to the air flow channel through the vents 221. Specifically, a vent 221 is provided on the side of the vertical rib 220 facing the engine inlet, and the air outlet end of the air guide channel is connected to the air flow channel through the vents 221. The vents 221 are arranged toward the engine inlet to facilitate the hot air to mix with the inlet air flow after entering the air flow channel and move along the air flow channel together. In addition, a plurality of vents 221 are provided on each vertical rib 220, and the air outlet end of the air guide channel can be connected to the air flow channel through each corresponding vent 221 at the same time, so that the transported hot air can be quickly discharged through the plurality of vents 221, thereby increasing the heating rate of the inlet air flow, and can simultaneously produce qualified air flow temperature distortion and air flow pressure distortion, thereby ensuring the accuracy of the final test results.

[0058] In some specific embodiments of the present invention, referring to Figure 2The overall casing 100 includes: a first casing 110, a second casing 120 and an air intake casing 130. Both sides of the flange ring 210 are detachably connected to the first casing 110 and the second casing 120 respectively. One end of the second casing 120 away from the first casing 110 is connected to the engine inlet through the air intake casing 130. The first casing 110, the second casing 120 and the air intake casing 130 are connected in sequence to form an air flow channel.

[0059] Specifically, the first casing 110, the second casing 120 and the air intake casing 130 are arranged in this way, and the end faces of the flange ring 210 are respectively fitted with one end face of the first casing 110 and one end face of the second casing 120, so as to determine the placement position of the flange ring 210, and then the flange ring 210 is detachably connected between the first casing 110 and the second casing 120 by bolts passing through the first casing 110, the flange ring 210 and the second casing 120 in sequence. The end of the second casing 120 away from the first casing 110 is connected to one end of the air intake casing 130, and the end of the air intake casing 130 away from the second casing 120 is connected to the engine inlet, so that the first casing 110, the second casing 120 and the air intake casing 130 arranged in sequence are connected to each other to form an air flow channel. The structure is simple and flexible, and is easy to process, manufacture, install and disassemble.

[0060] In some specific embodiments of the present invention, referring to Figure 2 An air intake cap 300 is disposed in the air flow channel along the axial direction of the first casing 110 , the second casing 120 , and the air intake casing 130 .

[0061] Specifically, the first casing 110, the second casing 120 and the air intake casing 130 are coaxially arranged, the air intake cap 300 is arranged in the air flow channel along the axial direction of the first casing 110, the second casing 120 and the air intake casing 130, and the outer wall of the air intake cap 300 extends along the axial direction of the first casing 110, the second casing 120 and the air intake casing 130 and is sequentially arranged in the first casing 110, the second casing 120 and the air intake casing 130, so that the moving direction of the inlet airflow can be restricted by the outer wall of the air intake cap 300. When the inlet airflow contacts the outer wall of the air intake cap 300, the inlet airflow can move along the outer wall of the air intake cap 300, and the moving direction of the inlet airflow is guided by the outer wall of the air intake cap 300, so as to ensure that the inlet airflow can smoothly reach the engine inlet and ensure the airflow distortion effect.

[0062] Reference Figure 7 The flow field in the gas flow channel of the composite distortion generator of the present invention is simulated by a three-dimensional simulation method, referring to Figure 8 , and a cross-sectional view of the total pressure distribution at the location of the distortion plate 200 is taken.

[0063] Among them, when only the inlet airflow is introduced and no hot air is introduced, the airflow pressure distortion index is obtained by the following formula:

[0064]

[0065] P * is the average total pressure of the cross section of the total pressure distribution at the position of the distortion plate 200, P is the average static pressure of the cross section of the total pressure distribution at the position of the distortion plate 200, is the minimum value of the average total pressure in any sector with a central angle of 60° in the cross section of the total pressure distribution at the position of the distortion plate 200, DC 60 is the airflow pressure distortion index.

[0066] When hot air is introduced, the airflow temperature distortion index is obtained by the following formula:

[0067]

[0068] T * is the average total temperature of the cross section of the total pressure distribution at the position of the distortion plate 200, T120 max is the maximum value of the average total temperature in any sector-shaped area with a central angle of 120° in the cross section of the total pressure distribution at the position of the distortion plate 200, TC 120 is the air flow temperature distortion index.

[0069] Reference Fig. 9 According to the simulation results, the corresponding simulation calculation is carried out. When the hot gas is introduced and the introduced hot gas is 610K, it can be seen that the higher the proportion of the introduced hot gas, the higher the TC 120 The higher the value, the higher the ratio of the introduced hot air refers to the ratio of the flow rate of the hot air introduced from the air guide channel of the distortion plate 200 to the flow rate of the inlet air flow introduced into the air flow channel.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite distortion generator, characterized in that: include: A main casing (100) is arranged at the engine inlet, an air flow channel is provided in the main casing (100), one end of the air flow channel is communicated with the engine inlet; A distortion plate (200) is disposed in the air flow channel in a surrounding manner, and a ventilation groove is provided on the distortion plate (200), and two sides of the ventilation groove are respectively connected to two ends of the air flow channel; A plurality of air guide channels are provided in the distortion plate (200), the air outlet ends of the air guide channels are communicated with the air flow channels, and the air inlet ends of the air guide channels are connected to air ducts that convey gas at a preset temperature.

2. The composite distortion generator according to claim 1, characterized in that: The distortion plate (200) comprises: A flange ring (210) surrounding the airflow channel and detachably disposed on the main casing (100); At least two vertical ribs (220) are respectively arranged on the inner ring of the flange ring (210) along the radial direction of the flange ring (210), and one end of the vertical rib (220) close to the flange ring (210) penetrates the flange ring (210) along the radial direction of the flange ring (210); Every two adjacent vertical ribs (220) enclose one of the ventilation grooves; The air guide channel is opened in the vertical rib plate (220), and the end of the air guide channel close to the flange ring (210) forms the air inlet end of the air guide channel, and the end of the air guide channel away from the flange ring (210) forms the air outlet end of the air guide channel.

3. The composite distortion generator according to claim 2, characterized in that: The distortion plate (200) further comprises: The annular rib plate (230) is coaxially arranged with the flange ring (210), and the outer ring of the annular rib plate (230) is connected to one end of at least two adjacent vertical rib plates (220) away from the flange ring (210).

4. The composite distortion generator according to claim 2 or 3, characterized in that: One end of at least one of the vertical ribs (220) away from the flange ring (210) extends by a preset length along the radial direction of the flange ring (210) in a direction away from the flange ring (210).

5. The composite distortion generator according to claim 2 or 3, characterized in that: Both sides of at least one of the vertical ribs (220) extend along the circumference of the flange ring (210) by a preset width.

6. The composite distortion generator according to claim 3, characterized in that: The annular rib plate (230) between at least two adjacent vertical rib plates (220) extends in a radial direction of the flange ring (210) by a preset thickness.

7. The composite distortion generator according to claim 2, characterized in that: At least two pipe joints (240) are arranged on the outer ring of the flange ring (210), and are respectively connected to at least two of the vertical ribs (220) via sealing gaskets; The air inlet end of the air guide channel is in communication with an end of the pipe joint (240) close to the flange ring (210), and the air duct is in communication with an end of the pipe joint (240) away from the flange ring (210).

8. The composite distortion generator according to claim 2, characterized in that: A plurality of ventilation holes (221) are formed on one side of the vertical rib plate (220) close to the engine inlet; The air outlet end of the air guide channel is connected to the air flow channel through the air vent (221).

9. The composite distortion generator according to claim 2, characterized in that: The overall casing (100) comprises: A first casing (110) and a second casing (120), wherein two sides of the flange ring (210) are detachably connected to the first casing (110) and the second casing (120) respectively; One end of the second casing (120) away from the first casing (110) is connected to the engine inlet via an air intake casing (130); The first casing (110), the second casing (120) and the air intake casing (130) are connected in sequence to form the airflow channel.

10. The composite distortion generator according to claim 9, characterized in that: An air intake cap (300) is arranged in the air flow channel along the axial direction of the first casing (110), the second casing (120) and the air intake casing (130).

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