Icing wind tunnel hot air anti-icing test model

Abstract

The invention discloses an icing wind tunnel hot air anti-icing test model, belongs to the technical field of aircraft icing tests, and aims to solve the problem that the ice shape waiting time of an existing hot air anti-icing test is too long. The model comprises a leading edge slat structure, the leading edge slat structure is provided with a hot air cavity and an emptying cavity, the hot air cavity and the emptying cavity are communicated through a plurality of air gap hole channels, a plurality of discharging holes are formed in the outer wall of the emptying cavity, a connecting sleeve is arranged on one side of the model, the other side of the model is connected with a half-mold mechanism driving end assembly, and the sealing end of a flute-shaped pipe penetrates through the connecting sleeve. The flute-shaped pipe extends into the hot air cavity and is provided with a plurality of exhaust holes in the axial direction. The driven shaft is a pipe shaft component and is detachably connected with the driven end assembly of the half-mold mechanism, the opening end of the flute-shaped pipe extends into the driven shaft, and the other end of the driven shaft is in inserted sealing fit with the hot air pipeline. The hot air pipe and the flute-shaped pipe can be conveniently and quickly disassembled, and the phenomena of melting, degeneration and the like of ice shapes due to too long waiting time are avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft icing test, and particularly relates to a hot-air anti-icing test model for an icing wind tunnel. BACKGROUND

[0002] Aircraft icing can seriously threaten flight safety, and hot-air anti-icing has been applied to most transport aircraft. In order to study the effect of hot-air anti-icing on wing anti-icing, relevant test research needs to be carried out. Icing wind tunnel test is a common method for studying the icing mechanism of aircraft wings, and the relevant anti-icing test on the hot-air anti-icing test model in the icing wind tunnel is an effective test method for studying the effect of hot-air anti-icing. In the hot-air anti-icing test, the model external hot-air pipeline needs to be adjusted with the model attack angle, while ensuring the pipeline sealing; in addition, after the test is completed, hand-drawing ice shape, three-dimensional ice shape scanning and other operations need to be carried out, and the model design allows the test section side wall to be quickly opened to avoid ice shape degradation. In some tests, the whistle-shaped pipe also needs to be replaced conveniently to study the anti-icing effect of different forms of whistle-shaped pipes. The present application discloses a hot-air anti-icing test model, wherein the driving shaft is installed in the half mold mechanism, the model attack angle can be adjusted, the driven shaft is provided with a hollow structure as the hot-air pipeline, the whistle-shaped pipe is installed in the inside of the driven side shaft, and the hot air enters the whistle-shaped pipe from the inside of the driven shaft; the whistle-shaped pipe is installed in the driven shaft, the driven shaft and the connecting sleeve pipe are in clearance fit, and a sealing ring is arranged therebetween to ensure the sealing of the hot-air pipeline. Based on the hot-air anti-icing test model of the present application, the driven shaft and the model are in plug-in structure, the driven shaft and the hot-air pipeline can be quickly disassembled after the test, the test section side wall can be opened, ice shape measurement and other work can be carried out, and the whistle-shaped pipe replacement workload can be greatly reduced, thereby improving the test efficiency. SUMMARY

[0003] The application aims to provide a hot-air anti-icing test model for an icing wind tunnel, so as to solve the problem of melting and degradation of the ice shape of the existing hot-air anti-icing test model for an icing wind tunnel due to too long waiting time. The technical scheme adopted by the application is as follows:

[0004] A hot-air anti-icing test model for an icing wind tunnel, wherein the model is used for test in a test section of the icing wind tunnel, a half mold mechanism driving end assembly is arranged on one side wall of the test section, an opening is arranged on the other side wall of the test section, a wall plate door is used for opening and closing the opening, a half mold mechanism driven end assembly is arranged on the wall plate door, and the working end of the half mold mechanism driving end assembly and the working end of the half mold mechanism driven end assembly are coaxially arranged.

[0005] The model comprises a slat leading edge skin, a slat trailing edge skin, a ventilation pad plate and a wing box, the slat leading edge skin, the slat trailing edge skin and the ventilation pad plate form a leading edge slat structure, the ventilation pad plate separates the inside of the leading edge slat structure into a hot air cavity located at the front and a venting cavity located at the back, the hot air cavity and the venting cavity are communicated through a plurality of air gap holes, both slat supports are connected with the slat leading edge skin, the slat trailing edge skin and the ventilation pad plate, and correspond to the two ends of the hot air cavity and the two ends of the venting cavity, the two ends of the wing box are connected with the two slat supports correspondingly, the wing box and the leading edge slat structure are provided with a heat insulation rubber pad, and a plurality of discharge holes are arranged on the slat trailing edge skin.

[0006] The slat support on one side is provided with a connecting sleeve, the slat support on the other side is connected with the working end of the half-mold mechanism driving end assembly through a driving shaft, the flute-shaped pipe is a pipe-shaped component with an open end, the closed end of the flute-shaped pipe penetrates through the connecting sleeve and extends into the hot air cavity, and a plurality of air exhaust holes are arranged on the flute-shaped pipe in the axial direction.

[0007] The driven shaft is a pipe shaft component, the driven shaft is detachably connected with the working end of the half-mold mechanism driven end assembly when the wallboard door is closed, one end of the driven shaft penetrates through the wallboard door and is sealingly connected with the connecting sleeve, the open end of the flute-shaped pipe extends into the driven shaft, and the other end of the driven shaft is sealingly connected with the hot air pipeline.

[0008] Further, the ventilation pad plate is vertically arranged, the upper and lower sides of the ventilation pad plate are connected with the upper wall and the lower wall of the slat leading edge skin correspondingly, the rear end of the upper wall of the slat leading edge skin is connected with the rear end of the slat trailing edge skin, the front end of the slat trailing edge skin is connected with the ventilation pad plate, the hot air cavity is formed between the front part of the slat leading edge skin and the ventilation pad plate, the venting cavity is formed between the rear part of the upper wall of the slat leading edge skin and the slat trailing edge skin and the ventilation pad plate, a plurality of air gap grooves are arranged on the upper side end face of the ventilation pad plate, and the plurality of air gap grooves and the upper wall of the slat leading edge skin form a plurality of air gap hole channels.

[0009] Further, the wing box is located below the slat trailing edge skin, the rear part of the slat trailing edge skin is abutted with the upper side of the wing box through the heat insulation rubber pad, the rear end of the lower wall of the slat leading edge skin is close to the lower side of the wing box, the gap is formed between the wing box and the front part of the slat trailing edge skin and the ventilation pad plate, the plurality of discharge holes are arranged on the front part of the slat trailing edge skin, and the plurality of discharge holes are directed to the gap.

[0010] Further, when the driven shaft is inserted into the connecting sleeve, the outer periphery of the connecting sleeve is sealingly connected with the inner periphery of the driven shaft through a plurality of sealing rings.

[0011] Further, the open end of the flute-shaped pipe is provided with a shaft shoulder structure, the flute-shaped pipe is connected with the inner hole stop of the connecting sleeve through the shaft shoulder structure, and the outer diameter of the shaft shoulder structure is smaller than the outer diameter of the connecting sleeve.

[0012] Further, the plurality of air exhaust holes are arranged forwardly.

[0013] Further, the open end of the flute-shaped pipe is provided with a key-shaped protruding structure, and the inner wall of the one end of the connecting sleeve plug-in matched with the driven shaft is provided with a key-shaped slot structure, and the key-shaped protruding structure is matched with the key-shaped slot structure when the driven shaft is plug-in matched with the connecting sleeve.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The model can be installed on the icing wind tunnel half mold mechanism to carry out model hot air anti-icing test, the driven shaft and the driving shaft support the model together, the open end of the flute-shaped pipe is inserted into the driven shaft, the driven shaft is plug-in matched into the connecting sleeve on the model, and the driven shaft is connected with the driven end assembly of the half mold mechanism, the driven shaft is part of the hot air flow channel, which can realize rapid disassembly of the hot air pipeline, the connecting sleeve and the flute-shaped pipe, allow quick replacement of different configurations of flute-shaped pipes, facilitate opening of the test section side wall to carry out ice shape measurement and other work, avoid melting and degradation of ice shape due to too long waiting time, and greatly improve the test efficiency.

[0016] 2. The present application provides a design method of the flute-shaped pipe, when the ratio of static pressure to dynamic pressure at the exhaust hole is greater than or equal to 3, the outflow angle of the exhaust hole is greater than or equal to 60°, and the design combining condition 1 and condition 3 can make the hot air sprayed by each exhaust hole uniform and consistent in flow, which is more conducive to observing the anti-icing effect of the model in the span direction under the condition of uniform hot air spraying of each exhaust hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the device of the present application;

[0018] Figure 2 is Figure 1 a schematic diagram of the slat leading edge skin removed;

[0019] Figure 3 is a top view sectional view of the device of the present application;

[0020] Figure 4 is Figure 3 an enlarged view of A of

[0021] Figure 5 is Figure 3 a B-B sectional view of

[0022] Figure 6 is a sectional view of the leading edge slat structure;

[0023] Figure 7 is a structural schematic diagram of the air cushion plate;

[0024] Figure 8 is a structural schematic diagram of the driven shaft;

[0025] Figure 9 is a local structure diagram of the flute-shaped pipe;

[0026] Figure 10 is a structure diagram of the slat trailing edge skin;

[0027] Figure 11 is a schematic diagram of the outflow state of the first exhaust hole and the nth exhaust hole.

[0028] In the figure, 1. main shaft, 2. slat leading edge skin, 3. driven shaft, 4. wing box, 5. slat support, 6. flute-shaped pipe, 7. air cushion plate, 8. slat trailing edge skin, 9. heat insulation rubber pad, 10. connecting sleeve, 11. sealing ring, 12. half mold mechanism driving end assembly, 13. side wall, 14. half mold mechanism driven end assembly, 15. exhaust hole, 16. air gap channel, 17. hot gas cavity, 18. vent cavity, 19. air gap groove, 20. discharge hole, 21. key-shaped slot structure, 22. shaft shoulder structure, 23. key-shaped protrusion structure, 24. leading edge slat structure. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer and more comprehensible, the present application will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0030] The connection mentioned in the present application is divided into fixed connection and detachable connection. The fixed connection, i.e. non-detachable connection, includes but is not limited to conventional fixed connection modes such as flange connection, rivet connection, adhesive connection and welding connection. The detachable connection includes but is not limited to conventional detachable modes such as bolt connection, buckle connection, pin connection and hinge connection. When the specific connection mode is not explicitly limited, at least one connection mode can be found in the existing connection mode to realize the function, and the person skilled in the art can select it according to the needs. For example, the fixed connection selects welding connection, and the detachable connection selects bolt connection.

[0031] The present application will be further described in detail below with reference to the drawings. The following examples are an explanation of the present application, and the present application is not limited to the following examples.

[0032] Example 1: as Figures 1-10As shown, an icing wind tunnel hot air anti-icing test model, which is tested in the test section of the icing wind tunnel, one side wall 13 of the test section is provided with a half mold mechanism driving end assembly 12, the other side wall 13 of the test section is provided with an opening, and a wall door opens and closes the opening, the wall door is provided with a half mold mechanism driven end assembly 14, and the working end of the half mold mechanism driving end assembly 12 is coaxially arranged with the working end of the half mold mechanism driven end assembly 14;

[0033] The model comprises a slat leading edge skin 2, a slat trailing edge skin 8, an air cushion plate 7 and a wing box 4, the slat leading edge skin 2, the slat trailing edge skin 8 and the air cushion plate 7 form a leading edge slat structure 24, the air cushion plate 7 separates the inside of the leading edge slat structure 24 into a hot air cavity 17 located in the front part and a vent cavity 18 located in the rear part, the hot air cavity 17 and the vent cavity 18 are communicated through a plurality of air gap channels 16, two slat supports 5 are connected with the slat leading edge skin 2, the slat trailing edge skin 8 and the air cushion plate 7, and correspond to close the two ends of the hot air cavity 17 and the two ends of the vent cavity 18, the two ends of the wing box 4 are connected with the two slat supports 5 correspondingly, and the wing box 4 is provided with a heat insulation rubber pad 9 between the wing box 4 and the leading edge slat structure 24, and a plurality of discharge holes 20 are arranged on the slat trailing edge skin 8;

[0034] The slat support 5 on one side is provided with a connecting sleeve 10, and the slat support 5 on the other side is connected with the working end of the half mold mechanism driving end assembly 12 through a driving shaft 1, the flute-shaped pipe 6 is a tubular member with one end open, the closed end of the flute-shaped pipe 6 penetrates through the connecting sleeve 10 and extends into the hot air cavity 17, and a plurality of air exhaust holes 15 are arranged on the flute-shaped pipe 6 in the axial direction;

[0035] The driven shaft 3 is a tubular shaft member, when the wall door is closed, the driven shaft 3 is detachably connected with the working end of the half mold mechanism driven end assembly 14, one end of the driven shaft 3 penetrates through the wall door and is sealingly connected with the connecting sleeve 10, the open end of the flute-shaped pipe 6 extends into the driven shaft 3, and the other end of the driven shaft 3 is sealingly connected with the hot air pipeline.

[0036] The air cushion plate 7 is vertically arranged, the upper and lower sides of the air cushion plate 7 are connected with the upper wall and the lower wall of the slat leading edge skin 2 correspondingly, the rear end of the upper wall of the slat leading edge skin 2 is connected with the rear end of the slat trailing edge skin 8, the front end of the slat trailing edge skin 8 is connected with the air cushion plate 7, the hot air cavity 17 is formed between the front part of the slat leading edge skin 2 and the air cushion plate 7, the vent cavity 18 is formed between the rear part of the upper wall of the slat leading edge skin 2 and the slat trailing edge skin 8 and the air cushion plate 7, a plurality of air gap grooves 19 are arranged on the upper side edge end face of the air cushion plate 7, and the plurality of air gap grooves 19 and the upper wall of the slat leading edge skin 2 form a plurality of air gap channels 16.

[0037] The wing box 4 is located at the lower side of the slat trailing edge skin 8, the rear part of the slat trailing edge skin 8 is abutted to the upper side of the wing box 4 through the heat insulation rubber pad 9, the rear end of the lower side wall of the slat leading edge skin 2 is abutted to the lower side of the wing box 4, the gap is formed between the wing box 4 and the front part of the slat trailing edge skin 8 and the air cushion plate 7, and a plurality of discharge holes 20 are arranged at the front part of the slat trailing edge skin 8 and face the gap.

[0038] When the driven shaft 3 is inserted into the connecting sleeve 10, the outer periphery of the connecting sleeve 10 is sealingly matched with the inner periphery of the driven shaft 3 through a plurality of sealing rings 11.

[0039] The open end of the flute-shaped tube 6 is provided with a shaft shoulder structure 22, the flute-shaped tube 6 is matched with the inner hole shoulder of the connecting sleeve 10 through the shaft shoulder structure 22, the movement of the flute-shaped tube 6 along the length direction is limited, the outer diameter of the shaft shoulder structure 22 is smaller than the outer diameter of the connecting sleeve 10, so that the opening of the flute-shaped tube 6 can be extended into the driven shaft 3 when the connecting sleeve 10 is inserted into the driven shaft 3.

[0040] A plurality of exhaust holes 15 are arranged forwardly.

[0041] The open end of the flute-shaped tube 6 is provided with a key-shaped protruding structure 23, the inner wall of the end of the driven shaft 3 is provided with a key-shaped slot structure 21 when the driven shaft 3 is inserted into the connecting sleeve 10, the key-shaped protruding structure 23 is matched with the key-shaped slot structure 21 when the driven shaft 3 is inserted into the connecting sleeve 10, and the rotation of the flute-shaped tube 6 can be limited.

[0042] The slat leading edge skin 2, the slat trailing edge skin 8 and the air cushion plate 7 of the present application are all mounted on the slat bracket 5, the slat bracket 5 is connected with the wing box 4 through screws, the heat insulation rubber pad is arranged between the slat bracket 5 and the wing box 4 to prevent the heat of the hot air from being transmitted to the wing box 4, and the wing box 4 can also adopt the structure form of a framework and a skin. The driven shaft 3 and the connecting sleeve 10 are inserted into each other, the outer periphery of the connecting sleeve 10 is sealingly matched with the inner periphery of the driven shaft 3 through a plurality of sealing rings 11.

[0043] The hot air can be sequentially discharged into the hot air cavity 17 through the driven shaft 3, the flute-shaped tube 6 and a plurality of exhaust holes 15, then enters into the emptying cavity 18 through a plurality of air gap holes 16, and finally is discharged from the model through a plurality of discharge holes 20, and the model of the present application can be mounted on the half model mechanism of the icing wind tunnel to carry out the hot air anti-icing test of the model.

[0044] The driven shaft 3 and the driving shaft 1 support the model together, the open end of the flute-shaped pipe 6 is inserted into the driven shaft 3, the driven shaft 3 is inserted into the connecting sleeve 10 on the model, and the driven shaft 3 is connected with the half mold mechanism driven end assembly 14, the driven shaft 3 is part of the hot gas flow channel, which can realize quick disassembly of the hot gas pipeline, the connecting sleeve 10 and the flute-shaped pipe 6, allows quick replacement of different configurations of flute-shaped pipes 6, facilitates opening of the test section side wall 13 to carry out ice shape measurement and other work, avoids melting and degradation of ice shape due to too long waiting time, and greatly improves test efficiency.

[0045] Embodiment two: as shown in the figure, a design method of a flute-shaped pipe, the flute-shaped pipe is the flute-shaped pipe 6 described in embodiment one, comprising the following steps: Figures 1-11

[0046] Step one, clearly define the design purpose: in order to make the hot gas sprayed by each exhaust hole 15 uniform and consistent in flow, the following two conditions need to be met at the same time:

[0047] Condition 1: the processing technology, shape and flow coefficient of each exhaust hole 15 are the same;

[0048] Condition 2: the outflow angle α of each exhaust hole 15 is greater than or equal to 60 degrees;

[0049] Step two, number the several proposed exhaust holes 15 in order from near to far from the open end of the flute-shaped pipe 6, the static pressure at the position of each exhaust hole 15 in the flute-shaped pipe 6 is calculated by the following formula:

[0050] ; (1)

[0051] In the formula, P jn is the static pressure at the position of the nth exhaust hole 15 in the flute-shaped pipe 6, L n is the air volume of the nth exhaust hole 15, μ n is the flow coefficient of the nth exhaust hole 15, f n is the orifice area of the nth exhaust hole 15, and ρ is the density of hot gas;

[0052] Step three, take the first exhaust hole 15 as the reference, initially set the orifice area f1 and the flow coefficient μ1 of the first exhaust hole 15, and substitute them into formula (1) to calculate the static pressure P j1 at the position of the first exhaust hole 15 in the flute-shaped pipe 6:

[0053] Step four, measure the total pressure P 01 at the position of the first exhaust hole 15 in the flute-shaped pipe 6 under test conditions, then the dynamic pressure P d1 at the position of the first exhaust hole 15 in the flute-shaped pipe 6 is calculated by the following formula:

[0054] ​ (2)

[0055] Step 5, if P j1 With P d1 If the ratio is greater than or equal to 3, then retain the initial values ​​of f1 and μ1. If P j1 With P d1 If the ratio is less than 3, adjust the initial values ​​of f1 and μ1 until P... j1 With P d1 The ratio is greater than or equal to 3;

[0056] Step 6: The dynamic pressure P at the location of the nth exhaust port 15 inside the flute tube 6. dn Calculated using the following formula:

[0057] (3)

[0058] In the formula: R is the friction loss per unit length inside the flute tube 6, l is the distance between the nth exhaust hole 15 and the first exhaust hole 15, and Z is the local resistance loss between the nth exhaust hole 15 and the first exhaust hole 15.

[0059] Step 7: Initially define the orifice area f of the nth vent hole 15. n and flow coefficient μ n Substitute the values ​​into equation (1) to calculate the static pressure P at the location of the nth exhaust hole 15 inside the flute tube 6. jn :

[0060] Step 8: Calculate the static pressure P at the location of the nth vent hole 15 inside the flute-shaped tube 6, as obtained in Step 7. jn Substitute into equation (3) to calculate the dynamic pressure P. dn :

[0061] Step 9, if P jn With P dn If the ratio is greater than or equal to 3, then retain f. n and μ n The initial value of P, if jn With P dn If the ratio is less than 3, then adjust f. n and μ n The initial value of P is set so that jn With P dn The ratio is greater than or equal to 3;

[0062] Step 10: Repeat steps 6 to 9 to determine the orifice area and flow coefficient of all exhaust holes 15;

[0063] Step 11: Design all exhaust holes 15 to have similar shapes.

[0064] The application provides a design method of the flute-shaped pipe 6. When the ratio of the static pressure to the dynamic pressure at the exhaust hole 15 is greater than or equal to 3, the outflow angle of each exhaust hole 15 is greater than or equal to 60°, the condition 2 is met, the shapes of all the exhaust holes 15 are designed as similar shapes, the condition 1 is met, the hot air sprayed by each exhaust hole 15 is uniform and the flow is consistent, and the deicing effect of the model span direction under the condition that each exhaust hole 15 uniformly sprays hot air is more favorable.

[0065] The above examples are only illustrative of the application and do not limit the protection scope of the application. The skilled in the art can also make partial changes to the application, as long as the changes do not exceed the spirit and essence of the application, and the changes are within the protection scope of the application.

Claims

1. An icing wind tunnel hot air anti-icing test model, which is tested in a test section of an icing wind tunnel, one side wall (13) of the test section is provided with a half-mold mechanism driving end assembly (12), the other side wall (13) of the test section is provided with an opening, a wall door opens and closes the opening, the wall door is provided with a half-mold mechanism driven end assembly (14), and the working end of the half-mold mechanism driving end assembly (12) is coaxially arranged with the working end of the half-mold mechanism driven end assembly (14). characterized in that The model comprises a slat leading edge skin (2), a slat trailing edge skin (8), an air cushion plate (7) and a wing box (4), the slat leading edge skin (2), the slat trailing edge skin (8) and the air cushion plate (7) form a leading edge slat structure (24), the air cushion plate (7) divides the inside of the leading edge slat structure (24) into a hot air cavity (17) located in the front part and a vent cavity (18) located in the rear part, the hot air cavity (17) and the vent cavity (18) are communicated through a plurality of air gap channels (16), two slat supports (5) are connected with the slat leading edge skin (2), the slat trailing edge skin (8) and the air cushion plate (7), and correspondingly seal the two ends of the hot air cavity (17) and the two ends of the vent cavity (18), the two ends of the wing box (4) are correspondingly connected with the two slat supports (5), respectively, and the wing box (4) is provided with a heat insulation rubber pad (9) between the wing box (4) and the leading edge slat structure (24), and a plurality of exhaust holes (20) are arranged on the slat trailing edge skin (8). A connecting sleeve (10) is arranged on one side of the slat support (5), the other side of the slat support (5) is connected with the working end of the half-mold mechanism driving end assembly (12) through a driving shaft (1), the flute-shaped pipe (6) is a tubular member with one open end, the closed end of the flute-shaped pipe (6) penetrates through the connecting sleeve (10) and extends into the hot air cavity (17), and a plurality of air exhaust holes (15) are arranged on the flute-shaped pipe (6) in the axial direction. The driven shaft (3) is a tubular shaft member, when the wall door is closed, the driven shaft (3) is detachably connected with the working end of the half-mold mechanism driven end assembly (14), one end of the driven shaft (3) penetrates through the wall door and is sealingly connected with the connecting sleeve (10), the open end of the flute-shaped pipe (6) extends into the driven shaft (3), and the other end of the driven shaft (3) is sealingly connected with the hot air pipeline.

2. The hot air anti-icing test model of claim 1, wherein: The air cushion plate (7) is vertically arranged, the upper and lower sides of the air cushion plate (7) are correspondingly connected with the upper wall and the lower wall of the slat leading edge skin (2), respectively, the rear end of the upper wall of the slat leading edge skin (2) is connected with the rear end of the slat trailing edge skin (8), the front end of the slat trailing edge skin (8) is connected with the air cushion plate (7), the front part of the slat leading edge skin (2) and the air cushion plate (7) form the hot air cavity (17), the rear part of the upper wall of the slat leading edge skin (2) and the air cushion plate (7) form the vent cavity (18) with the slat trailing edge skin (8), and a plurality of air gap grooves (19) are arranged on the upper side end face of the air cushion plate (7), the plurality of air gap grooves (19) and the upper wall of the slat leading edge skin (2) cooperate to form a plurality of air gap channels (16).

3. The hot air anti-icing test model of claim 2, wherein: The wing box (4) is located at the lower side of the slat trailing edge skin (8), the rear part of the slat trailing edge skin (8) is abutted with the upper side of the wing box (4) through the heat insulation rubber pad (9), the rear end of the lower side wall of the slat leading edge skin (2) is abutted with the lower side of the wing box (4), the gap is formed between the wing box (4) and the front part of the slat trailing edge skin (8) and the air cushion plate (7), a plurality of exhaust holes (20) are arranged at the front part of the slat trailing edge skin (8), and the plurality of exhaust holes (20) are towards the gap.

4. The hot air anti-icing test model of claim 1, wherein: When the driven shaft (3) is inserted into the connecting sleeve (10), the outer periphery of the connecting sleeve (10) is sealingly matched with the inner periphery of the driven shaft (3) through a plurality of sealing rings (11).

5. The hot air anti-icing test model of claim 4, wherein: The open end of the flute-shaped pipe (6) is provided with a shaft shoulder structure (22), the flute-shaped pipe (6) is matched with the inner hole stop of the connecting sleeve (10) through the shaft shoulder structure (22), and the outer diameter of the shaft shoulder structure (22) is smaller than the outer diameter of the connecting sleeve (10).

6. The hot-air anti-icing test model of any one of claims 1-5, wherein: A plurality of exhaust holes (15) are arranged forwardly.

7. The hot gas anti-icing test model for an icing wind tunnel according to claim 6, characterized in that: The open end of the flute-shaped pipe (6) is provided with a key-shaped protruding structure (23), the inner wall of one end of the connecting sleeve (10) is provided with a key-shaped slot structure (21) in plug-in cooperation with the driven shaft (3), and when the driven shaft (3) is plug-in matched with the connecting sleeve (10), the key-shaped protruding structure (23) is matched with the key-shaped slot structure (21).

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