Parameter adjustment method of ceramic matrix composite plain weave preform framework applied to aero-engine

Abstract

The application discloses a parameter adjusting method of a ceramic matrix composite plain weave preform framework applied to an aero-engine, and relates to the technical field of engineering thermophysics. The ceramic matrix composite plain weave preform framework comprises a plurality of fiber cloths, a first fiber bundle and a second fiber bundle are woven with a plurality of third fiber bundles and a plurality of fourth fiber bundles, and the parameter adjusting method comprises adjusting the size of inter-bundle pores, adjusting the pore spacing of adjacent inter-bundle pores and adjusting the size of inter-layer pores along a first direction. The inter-bundle pores are formed by weaving the plurality of fiber cloths, the inter-layer pores are formed by stacking the plurality of fiber cloths, and the inter-bundle pores and the inter-layer pores are adjusted, so that the flow of cooling gas in the seepage channel is adjusted, the cooling gas can cover the surface of a hot end component to form a gas film, and then the influence of high-temperature gas flow on the ceramic matrix composite material is reduced, so that the temperature of the hot end component is reduced, and the high-temperature corrosion of high-temperature water-oxygen-gas on the hot end component is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering thermophysics, and particularly to a parameter adjustment method of a ceramic matrix composite plain weave preform framework applied to an aero-engine. BACKGROUND

[0002] The combustion temperature of a future aero-engine combustion chamber can reach 2200K or above, and the existing flame tube material dominated by high-temperature alloy is difficult to withstand such high temperature, so the material needs to be actively cooled. In the existing cooling scheme, high-pressure air at the outlet of the compressor is generally used as secondary flow cooling air to cool the wall surface of the flame tube. In a high-temperature rise engine combustion chamber, a high-temperature alloy and a dense gas film hole gas film cooling method are generally used for cooling. However, the maximum temperature resistance of the high-temperature alloy is generally 1400K, and the combustion chamber temperature of the future aero-engine will reach 2200K or above. The existing cooling method of the high-temperature alloy is difficult to meet the development needs of the future. In some other existing schemes, holes are generally punched on the ceramic matrix composite material to actively cool through sweating cooling. However, this technical solution reduces the structural strength of the ceramic matrix composite material, resulting in a decrease in the mechanical properties of the ceramic matrix composite material. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to propose a parameter adjustment method of a ceramic matrix composite plain weave preform framework applied to an aero-engine, which can adjust the inter-beam porosity and the inter-layer porosity to adjust the performance of the ceramic matrix composite material, so that the ceramic matrix composite material can be reliably applied to the cooling of the hot end parts (such as the combustion chamber flame tube) of the aero-engine.

[0004] The parameter adjustment method of the ceramic matrix composite plain weave preform framework applied to the aero-engine according to the embodiment of the present application, the ceramic matrix composite material comprises: a plurality of layers of fiber cloths arranged in sequence along a first direction, any two adjacent layers of the fiber cloths jointly define interlayer pores, the fiber cloth comprises: a plurality of first fiber bundles and a plurality of second fiber bundles arranged alternately along a second direction, and a plurality of third fiber bundles and a plurality of fourth fiber bundles arranged alternately along a third direction, any two of the first direction, the second direction and the third direction are orthogonal; the first fiber bundle and any adjacent second fiber bundle are constructed as a first fiber bundle group, the third fiber bundle and any adjacent fourth fiber bundle are constructed as a second fiber bundle group, the first fiber bundle group and the second fiber bundle group jointly define bundle interstices, along the first direction, a plurality of opposite bundle interstices and a plurality of interlayer pores jointly construct a flow channel; the parameter adjustment method comprises: adjusting the size of the bundle interstices; adjusting the interstitial distance of adjacent bundle interstices; adjusting the size of the interlayer pores along the first direction.

[0005] The parameter adjustment method of the ceramic matrix composite plain weave preform framework applied to the aero-engine according to the embodiment of the present application, by weaving a plurality of layers of fiber cloths to form bundle interstices, a plurality of layers of fiber cloths are stacked to form interlayer pores, and the bundle interstices and the interlayer pores are adjusted to adjust the flow of cooling gas in the flow channel, so that the cooling gas can cover the surface of the hot end component to form a gas film, thereby reducing the temperature of the hot end component and preventing high-temperature water-oxygen-gas from corroding the hot end component.

[0006] According to some embodiments of the present application, the adjusting the size of the bundle interstices comprises: adjusting the size of the bundle interstices by adjusting the distance between the first fiber bundle and the second fiber bundle in the corresponding first fiber bundle group; and / or, adjusting the size of the bundle interstices by adjusting the distance between the third fiber bundle and the fourth fiber bundle in the corresponding second fiber bundle group.

[0007] According to some embodiments of the present application, the adjusting the interstitial distance of adjacent bundle interstices comprises: adjusting the size of the bundle interstices by adjusting the width of the first fiber bundle and / or the second fiber bundle in the corresponding first fiber bundle group; and / or, adjusting the size of the bundle interstices by adjusting the width of the third fiber bundle and / or the fourth fiber bundle in the corresponding second fiber bundle group.

[0008] According to some embodiments of the present application, the cross sections of the first fiber bundles, the second fiber bundles, the third fiber bundles, and the fourth fiber bundles are all configured as ellipses, and the adjusting the inter-bundle aperture spacing of the adjacent bundle includes: adjusting the long axes of the first fiber bundles and / or the second fiber bundles in the corresponding first fiber bundle group to adjust the size of the inter-bundle aperture; and / or, adjusting the long axes of the third fiber bundles and / or the fourth fiber bundles in the corresponding second fiber bundle group to adjust the size of the inter-bundle aperture.

[0009] According to some embodiments of the present application, the cross sections of the first fiber bundles, the second fiber bundles, the third fiber bundles, and the fourth fiber bundles are all configured as ellipses, and the adjusting the size of the inter-layer aperture along the first direction includes: adjusting the short axes of the first fiber bundles and / or the second fiber bundles in the corresponding first fiber bundle group to adjust the size of the inter-layer aperture along the first direction; and / or, adjusting the short axes of the third fiber bundles and / or the fourth fiber bundles in the corresponding second fiber bundle group to adjust the size of the inter-layer aperture along the first direction.

[0010] According to some embodiments of the present application, the longitudinal sections of the first fiber bundles, the second fiber bundles, the third fiber bundles, and the fourth fiber bundles are all configured as sinusoidal curves, and the adjusting the size of the inter-layer aperture along the first direction includes: adjusting the amplitudes of the first fiber bundles and / or the second fiber bundles in the corresponding first fiber bundle group to adjust the size of the inter-layer aperture along the first direction; and / or, adjusting the amplitudes of the third fiber bundles and / or the fourth fiber bundles in the corresponding second fiber bundle group to adjust the size of the inter-layer aperture along the first direction.

[0011] According to some embodiments of the present application, the parameter adjusting method further includes: adjusting the path of the percolation channel.

[0012] According to some embodiments of the present application, the adjusting the path of the percolation channel includes: rotating at least one of the fiber cloths around the first direction as an axis to adjust the path of the percolation channel.

[0013] According to some embodiments of the present application, the parameter adjusting method further includes: adjusting the included angle between the percolation channel and the first direction to change the orientation of the percolation channel.

[0014] According to some embodiments of the present application, adjusting the angle between the seepage channel and the first direction comprises: defining a plurality of the fiber cloths arranged in sequence along the first direction as a first fiber cloth, a second fiber cloth, a third fiber cloth, …, an Nth fiber cloth, displacing the Nth fiber cloth relative to the (N-1)th fiber cloth by a preset size along a direction parallel to the first plane, the first plane being orthogonal to the first direction, to adjust the angle between the seepage channel and the first direction, wherein the sum of the displacements of all the fiber cloths is less than the size of the inter-bundle pore along the corresponding direction.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description, which, taken together with the accompanying drawings, describes an embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken together with the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of a ceramic matrix composite according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of relative twisting of two layers of fiber cloths according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of displacement of a plurality of layers of fiber cloths by a preset size along a direction parallel to the first plane according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a single layer of fiber cloths according to an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a plain weave according to an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of an interlayer pore between two layers of fiber cloths according to an embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a first fiber bundle according to an embodiment of the present application;

[0024] Figure 8 is a schematic diagram of weaving of a first fiber bundle with a third fiber bundle, a fourth fiber bundle according to an embodiment of the present application;

[0025] Figure 9 is a flowchart of a parameter adjustment method for a plain weave preform skeleton of a ceramic matrix composite applied to an aero-engine according to an embodiment of the present application;

[0026] Figure 10is a schematic view of a fiber cloth with widened fiber bundles according to an embodiment of the present application;

[0027] Figure 11 is a schematic view of an elliptical cross section of a fiber bundle according to an embodiment of the present application.

[0028] Reference Signs:

[0029] Fiber cloth 1; first fiber bundle group 11; first fiber bundle 111; second fiber bundle 112; second fiber bundle group 12; third fiber bundle 121; fourth fiber bundle 122; percolation channel 13; inter-bundle pore 131; inter-layer pore 132; major axis 14; minor axis 15;

[0030] Ceramic matrix composite 10. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explanation only, and are not to be understood as limiting the present application.

[0032] Reference is made below to Figures 1-11 A parameter adjustment method of a plain weave preform framework of a ceramic matrix composite 10 applied to an aero-engine according to an embodiment of the present application is described below.

[0033] As Figure 1 shown, the parameter adjustment method of the plain weave preform framework of the ceramic matrix composite 10 applied to the aero-engine according to the embodiment of the present application, the ceramic matrix composite comprises: a plurality of layers of fiber cloths 1 arranged in sequence in a first direction, and any two adjacent fiber cloths 1 together define an inter-layer pore 132.

[0034] The ceramic matrix composite 10 is a composite material combined by fiber bundles and a matrix, the fiber bundles can be carbon fibers or silicon carbide fibers, for example, the fiber bundles can be woven by silicon carbide fiber filaments, the fiber bundles are woven into the fiber cloth 1, the plurality of layers of fiber cloths 1 are stacked to form a preform, the structure of the preform can be a plain weave structure, and a silicon carbide matrix needs to be deposited by chemical vapor deposition or other methods to achieve ceramicization.

[0035] The ceramic matrix composite 10 has the advantages of high temperature resistance, light weight and high specific strength, and can be applied to the hot end components (such as turbine blades, combustion chamber flame tube walls and the like) of the aero-engine. By utilizing the high temperature resistance advantage of the ceramic matrix composite 10, the adverse effects of high temperature gas flow on the performance of the hot end component can be reduced, and the material temperature can be effectively reduced by utilizing the in-situ self-generated pores in the ceramic matrix composite as a cooling air seepage channel for sweating cooling. Further, the combustion temperature of the aero-engine can be increased to improve important performance parameters such as the thrust-to-weight ratio of the aero-engine. By utilizing the light weight advantage of the ceramic matrix composite 10, the weight proportion of the ceramic matrix composite 10 can be reduced. Compared with the technical solution in the related art in which a metal material is used as a hot end component (the density of the ceramic matrix composite 10 is about 1 / 4 to 1 / 3 of the density of the above-mentioned metal material), the ceramic matrix composite 10 can reduce the overall weight, and further improve the thrust-to-weight ratio of the aero-engine.

[0036] As shown in Figures 1-3 The ceramic matrix composite 10 includes a plurality of fiber cloths 1 arranged in sequence along a first direction, and any two adjacent fiber cloths 1 jointly define an interlayer pore 132. The interlayer pore 132 can provide the ceramic matrix composite 10 with the prerequisite for sweating cooling. Cooling gas can seep through the interlayer pore 132 to the side of the ceramic matrix composite 10 facing the high temperature gas flow. The seepage can be understood as the flow of cooling gas in the interlayer pore 131 and the interlayer pore 132. The low temperature gas can reduce the high temperature corrosion of the ceramic matrix composite 10 by the high temperature gas flow, so that the ceramic matrix composite 10 can cope with high temperature gas flow with a higher temperature, and further meet the high temperature environment requirements of the hot end component, so that the aero-engine can have a higher working temperature, which is beneficial to improve the thrust-to-weight ratio of the aero-engine.

[0037] As shown in Figure 4 and Figure 5 The fiber cloth includes a plurality of first fiber bundles 111 and a plurality of second fiber bundles 112 arranged alternately along a second direction, and a plurality of third fiber bundles 121 and a plurality of fourth fiber bundles 122 arranged alternately along a third direction. Any two of the first direction, the second direction and the third direction are orthogonal. The first fiber bundle 111 and the second fiber bundle 112 are woven with the plurality of third fiber bundles 121 and the plurality of fourth fiber bundles 122. Along the first direction, the position where the first fiber bundle 111 contacts the third fiber bundle 121 is located on the upper side of the corresponding third fiber bundle 121, the position where the first fiber bundle 111 contacts the fourth fiber bundle 122 is located on the lower side of the corresponding fourth fiber bundle 122, the position where the second fiber bundle 112 contacts the third fiber bundle 121 is located on the lower side of the corresponding third fiber bundle 121, and the position where the first fiber bundle 111 contacts the fourth fiber bundle 122 is located on the upper side of the corresponding fourth fiber bundle 122.

[0038] Specifically, the plurality of first fiber bundles 111 and the plurality of second fiber bundles 112 can both extend along the third direction, and the plurality of first fiber bundles 111 and the plurality of second fiber bundles 112 are arranged alternately along the second direction, that is, along the second direction, each first fiber bundle 111 (excluding the first fiber bundle 111 located at the side) is arranged with a second fiber bundle 112 on both sides, and each second fiber bundle 112 (excluding the second fiber bundle 112 located at the side) is arranged with a first fiber bundle 111 on both sides. It should be noted that the longitudinal section of the first fiber bundle 111 and the second fiber bundle 112 can be configured as a sinusoidal curve, and in fact, the first fiber bundle 111 and the second fiber bundle 112 can have the same structure, that is, the sinusoidal functions satisfied by the longitudinal sections of the first fiber bundle 111 and the second fiber bundle 112 have the same shape, and the first sinusoidal function and the second sinusoidal function have the same amplitude, period, and angular frequency. Along the third direction, the initial phase of the first sinusoidal function and the second sinusoidal function differs by half a period, so that the waveforms of the first sinusoidal function and the second sinusoidal function along the second direction are opposite.

[0039] Similarly, the plurality of third fiber bundles 121 and the plurality of fourth fiber bundles 122 can both extend along the second direction, and the plurality of third fiber bundles 121 and the plurality of fourth fiber bundles 122 are arranged alternately along the third direction, that is, along the third direction, each third fiber bundle 121 (excluding the third fiber bundle 121 located at the side) is arranged with a fourth fiber bundle 122 on both sides, and each fourth fiber bundle 122 (excluding the fourth fiber bundle 122 located at the side) is arranged with a third fiber bundle 121 on both sides. It should be noted that the longitudinal section of the third fiber bundle 121 and the fourth fiber bundle 122 can be configured as a sinusoidal curve, and in fact, the third fiber bundle 121 and the fourth fiber bundle 122 can have the same structure. That is, the sinusoidal functions satisfied by the longitudinal sections of the third fiber bundle 121 and the fourth fiber bundle 122 have the same shape, and the third sinusoidal function and the fourth sinusoidal function have the same amplitude, period, and angular frequency.

[0040] Further, as shown in FIG. 1, the plurality of first fiber bundles 111 and the plurality of second fiber bundles 112 are arranged alternately along the second direction, and the plurality of third fiber bundles 121 and the plurality of fourth fiber bundles 122 are arranged alternately along the third direction, so that the plurality of first fiber bundles 111, the plurality of second fiber bundles 112, the plurality of third fiber bundles 121, and the plurality of fourth fiber bundles 122 are arranged alternately along the first direction, that is, along the first direction, each first fiber bundle 111 (excluding the first fiber bundle 111 located at the side) is arranged with a third fiber bundle 121 on both sides, and each third fiber bundle 121 (excluding the third fiber bundle 121 located at the side) is arranged with a first fiber bundle 111 on both sides. Figure 4 and Figure 5As shown, the first fiber bundle 111 and the second fiber bundle 112 are both woven with the plurality of third fiber bundles 121 and the plurality of fourth fiber bundles 122, in the first direction, in the adjacent first fiber bundle 111 and the second fiber bundle 112, if the position where the third fiber bundle 121 contacts the first fiber bundle 111 is located at the upper side of the corresponding first fiber bundle 111, then the position where the third fiber bundle 121 contacts the second fiber bundle 112 is located at the lower side of the corresponding second fiber bundle 112, if the position where the fourth fiber bundle 122 contacts the first fiber bundle 111 is located at the lower side of the corresponding first fiber bundle 111, then the position where the fourth fiber bundle 122 contacts the second fiber bundle 112 is located at the upper side of the corresponding second fiber bundle 112.

[0041] Similarly, as shown in Figure 4 and Figure 5 , the third fiber bundle 121 and the fourth fiber bundle 122 are both woven with the plurality of first fiber bundles 111 and the plurality of second fiber bundles 112, in the first direction, in the adjacent third fiber bundle 121 and the fourth fiber bundle 122, if the position where the first fiber bundle 111 contacts the third fiber bundle 121 is located at the upper side of the corresponding third fiber bundle 121, then the position where the first fiber bundle 111 contacts the fourth fiber bundle 122 is located at the lower side of the corresponding fourth fiber bundle 122, if the position where the second fiber bundle 112 contacts the third fiber bundle 121 is located at the lower side of the corresponding third fiber bundle 121, then the position where the first fiber bundle 111 contacts the fourth fiber bundle 122 is located at the upper side of the corresponding fourth fiber bundle 122.

[0042] As shown in Figure 1 , the first fiber bundle 111 and any adjacent second fiber bundle 112 are configured as a first fiber bundle group 11, the third fiber bundle 121 and any adjacent fourth fiber bundle 122 are configured as a second fiber bundle group 12, the first fiber bundle group 11 and the second fiber bundle group 12 jointly define an inter-bundle aperture 131, in the first direction, a plurality of opposite inter-bundle apertures 131 and a plurality of inter-layer apertures 132 jointly configure a percolation channel 13.

[0043] Further, as shown in Figure 1As shown, the first fiber bundle 111 and any adjacent second fiber bundle 112 are configured as a first fiber bundle group 11, the third fiber bundle 121 and any adjacent fourth fiber bundle 122 are configured as a second fiber bundle group 12, the extending direction of the first fiber bundle group 11 is orthogonal to the extending direction of the second fiber bundle group 12, the first fiber bundle group 11 and the second fiber bundle group 12 jointly define an inter-bundle aperture 131, along the first direction, a plurality of opposite inter-bundle apertures 131 and a plurality of inter-layer apertures 132 are jointly configured as a seepage channel 13, through which the ceramic matrix composite material 10 can be cooled by sweating. When the ceramic matrix composite material 10 is applied to a hot end component (for example, attached to the wall of the combustion chamber), along the thickness direction of the ceramic matrix composite material 10, the cooling gas can seep through the seepage channel 13 from the side close to the hot end component to the side close to the high-temperature gas flow, so that the cooling gas can cover the surface of the hot end component to form a gas film, thereby reducing the temperature of the hot end component and preventing high-temperature water-oxygen-gas from corroding the hot end component.

[0044] The parameter adjustment method of the present application will be described below according to the flow chart of the parameter adjustment method of the ceramic matrix composite material 10 plain weave preform skeleton applied to an aero-engine, which includes the following steps: Figure 9 The parameter adjustment method of the present application will be described below according to the flow chart of the parameter adjustment method of the ceramic matrix composite material 10 plain weave preform skeleton applied to an aero-engine, which includes the following steps:

[0045] S1, adjust the size of the inter-bundle aperture 131. As some embodiments of the present application, by adjusting the distance between the first fiber bundle 111 and the second fiber bundle 112 in the first fiber bundle group 11 along the second direction, and adjusting the distance between the third fiber bundle 121 and the fourth fiber bundle 122 in the second fiber bundle group 12 along the third direction, the flow area size of the inter-bundle aperture 131 jointly defined by the first fiber bundle group 11 and the second fiber bundle group 12 can be adjusted, the side length of the inter-bundle aperture 131 can be in the range of 0.4mm to 0.6mm, and the side length of the inter-bundle aperture 131 can be 0.4mm, 0.5mm, 0.6mm, etc. Such settings can make the fiber bundle have both structural strength and cooling capacity to improve the reliability of the ceramic matrix composite material 10.

[0046] Thus, by adjusting the size of the inter-bundle aperture 131, the flow rate of the cooling gas through the inter-bundle aperture 131 can be adjusted to adjust the cooling effect on the ceramic matrix composite material 10, and in the ceramic matrix composite material 10, in the area where high-strength cooling is required, the cooling effect can be improved by increasing the flow rate of the cooling gas by increasing the corresponding inter-bundle aperture 131.

[0047] S2, as shown in Figure 10As shown, the inter-bundle aperture 131 is adjusted in the inter-aperture distance. The two adjacent inter-bundle apertures 131 can be separated by the first fiber bundle 111 or the second fiber bundle 112 or the third fiber bundle 121 or the fourth fiber bundle 122, and the inter-aperture distance of the adjacent inter-bundle apertures 131 can be adjusted by adjusting the width size of the corresponding first fiber bundle 111 or the second fiber bundle 112 or the third fiber bundle 121 or the fourth fiber bundle 122, that is, the width size of the corresponding first fiber bundle 111 or the second fiber bundle 112 or the third fiber bundle 121 or the fourth fiber bundle 122 is the inter-aperture distance of the adjacent inter-bundle apertures 131.

[0048] Thus, by adjusting the inter-aperture distance of the adjacent inter-bundle apertures 131, the total cooling gas flow through all the inter-bundle apertures 131 is adjusted, so as to macroscopically control the cooling effect on the ceramic matrix composite material 10.

[0049] S3, adjust the size of the inter-layer aperture 132 along the first direction. The size of the inter-layer aperture 132 along the first direction can be adjusted by changing the thickness size (size along the first direction) of the corresponding fiber bundle, and the greater the thickness size of the fiber bundle, the greater the size of the inter-layer aperture 132 along the first direction.

[0050] Thus, by adjusting the size of the inter-layer aperture 132 along the first direction, the cooling gas flow through the inter-layer aperture 132 is adjusted, and the greater the inter-layer aperture 132, the greater the cooling gas flow, and the better the cooling effect on the ceramic matrix composite material 10.

[0051] In the above embodiment, the inter-bundle apertures 131 are formed by weaving a plurality of fiber bundles, the inter-layer apertures 132 are formed by stacking a plurality of fiber cloths 1, and the inter-bundle apertures 131 and the inter-layer apertures 132 are adjusted to adjust the flow of cooling gas in the percolation channel 13, so that the cooling gas can cover the surface of the hot end component to form a gas film, thereby reducing the temperature of the hot end component and preventing high-temperature water-oxygen-gas from corroding the hot end component at high temperature.

[0052] It should be noted that, as Figures 5-8As shown, the fiber cloth 1 is made by plain weave, and in the weaving process, the flow of the cooling gas can be adjusted by adjusting parameters, including the long axis 14 of the fiber bundle, the short axis 15 of the fiber bundle, the arrangement of the two adjacent layers of the fiber cloth 1, etc. For example, by increasing the size of the long axis 14 of the fiber bundle, the width of the fiber bundle can be increased, and then the size of the inter-bundle pore 131 between adjacent bundles can be adjusted by adjusting the width size of the fiber bundle; by increasing the size of the short axis 15 of the fiber bundle, the distance between the two adjacent layers of the fiber cloth 1 can be increased, and then the size of the inter-layer pore 132 in the first direction can be adjusted by adjusting the thickness size of the fiber bundle; by rotating at least one fiber cloth 1 around the first direction as the axis, the fiber cloth 1 adjacent to the rotated fiber cloth 1 is misaligned with the rotated fiber cloth 1, so that the inter-bundle pore 131 of the fiber cloth 1 adjacent to the rotated fiber cloth 1 is misaligned with the inter-bundle pore 131 of the rotated fiber cloth 1, so as to lengthen the path of the seepage channel 13, increase the flow resistance of the cooling gas, and reduce the flow of the cooling gas, thereby achieving the effect of controlling the cooling capacity of the cooling gas on the ceramic matrix composite material 10; by changing the inter-layer phase displacement to adjust the angle between the seepage channel 13 and the first direction, that is, misaligning the two adjacent fiber cloths 1 to change the orientation of the seepage channel 13, so that the orientation of the seepage channel 13 has an angle with the first direction, the length of the seepage channel 13 is lengthened, and the outflow angle of the cooling gas is reduced, so as to generate a certain resistance to the flow of the cooling gas, and appropriately reduce the cooling capacity of the cooling gas on the ceramic matrix composite material 10.

[0053] In some embodiments of the present application, adjusting the size of the inter-bundle pore 131 includes: adjusting the size of the inter-bundle pore 131 by adjusting the distance between the first fiber bundle 111 and the second fiber bundle 112 in the corresponding first fiber bundle group 11; and / or adjusting the size of the inter-bundle pore 131 by adjusting the distance between the third fiber bundle 121 and the fourth fiber bundle 122 in the corresponding second fiber bundle group 12.

[0054] Each bundle interstitial hole 131 can be defined by the corresponding first fiber bundle group 11 and the second fiber bundle group 12. If the size of the bundle interstitial hole 131 is to be adjusted, the distance between the first fiber bundle 111 and the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted. The greater the distance between the first fiber bundle 111 and the second fiber bundle 112 in the corresponding first fiber bundle group 11, the greater the size of the bundle interstitial hole 131. Alternatively, the distance between the third fiber bundle 121 and the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted. The greater the distance between the third fiber bundle 121 and the fourth fiber bundle 122 in the corresponding second fiber bundle group 12, the greater the size of the bundle interstitial hole 131. By adjusting the size of the bundle interstitial hole 131, the flow of cooling gas through the bundle interstitial hole 131 can be adjusted to adjust the cooling effect on the ceramic matrix composite material 10. In the ceramic matrix composite material 10, in areas where high-intensity cooling is required, the cooling gas flow can be increased by increasing the corresponding bundle interstitial hole 131 to improve the cooling effect. The adjustment method is simple, efficient, and easy to implement.

[0055] In some embodiments of the present application, adjusting the interstitial distance between adjacent bundle interstitial holes 131 includes adjusting the size of the bundle interstitial hole 131 by adjusting the width of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11; and / or adjusting the size of the bundle interstitial hole 131 by adjusting the width of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12.

[0056] The first fiber bundle 111 and / or the second fiber bundle 112 in the first fiber bundle group 11 can separate adjacent bundle interstitial holes 131. That is, the first fiber bundle 111 in the first fiber bundle group 11 can separate adjacent bundle interstitial holes 131, or the second fiber bundle 112 in the first fiber bundle group 11 can separate adjacent bundle interstitial holes 131, or the first fiber bundle 111 and the second fiber bundle 112 in the first fiber bundle group 11 can jointly separate adjacent bundle interstitial holes 131. If the interstitial distance between adjacent bundle interstitial holes 131 is to be adjusted, the width of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted. The greater the width of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11, the greater the interstitial distance between adjacent bundle interstitial holes 131.

[0057] Similarly, the adjacent inter-beam apertures 131 can also be separated by the third fiber bundle 121 and / or the fourth fiber bundle 122 in the second fiber bundle group 12, that is, the adjacent inter-beam apertures 131 can be separated by the third fiber bundle 121 in the second fiber bundle group 12, or the adjacent inter-beam apertures 131 can be separated by the fourth fiber bundle 122 in the second fiber bundle group 12, or the adjacent inter-beam apertures 131 can be separated by the third fiber bundle 121 and the fourth fiber bundle 122 in the second fiber bundle group 12 together. In order to adjust the inter-aperture spacing of the adjacent inter-beam apertures 131, the width of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted, and the greater the width of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12, the greater the inter-aperture spacing of the adjacent inter-beam apertures 131.

[0058] Thus, by adjusting the inter-aperture spacing of the adjacent inter-beam apertures 131, the density of the inter-beam apertures 131 can be adjusted, and then the total flow through all the inter-beam apertures 131 can be adjusted, so as to macroscopically control the cooling effect on the ceramic matrix composite material 10. The adjustment method is simple, efficient and easy to implement.

[0059] In some embodiments of the present application, as shown in Figures 5-8 , Figure 11 The cross sections of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121 and the fourth fiber bundle 122 are all configured as ellipses, and adjusting the inter-aperture spacing of the adjacent inter-beam apertures 131 includes: adjusting the major axis 14 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 to adjust the size of the inter-beam apertures 131; and / or, adjusting the major axis 14 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 to adjust the size of the inter-beam apertures 131.

[0060] The cross sections of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121 and the fourth fiber bundle 122 can all be configured as ellipses, the width of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121 and the fourth fiber bundle 122 is the major axis 14 of the ellipse, and the thickness of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121 and the fourth fiber bundle 122 is the minor axis 15 of the ellipse. The length of the major axis 14 can range from 1.8mm to 2.2mm, and the length of the major axis 14 can be 1.8mm, 2.0mm, 2.2mm, etc. The length of the minor axis 15 can range from 0.2mm to 0.4mm, and the length of the minor axis 15 can be 0.2mm, 0.3mm, 0.4mm, etc. Such settings can make the cross-sectional size of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121 and the fourth fiber bundle 122 reasonable.

[0061] To adjust the pore spacing between adjacent fiber bundles 131, the major axis 14 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted. That is, the size of the inter-bundle pore 131 can be adjusted by adjusting the major axis 14 of the first fiber bundle 111 in the corresponding first fiber bundle group 11, or vice versa. A larger major axis 14 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 results in a larger pore spacing between adjacent fiber bundles 131. To adjust the pore spacing between adjacent fiber bundles 131, the major axis 14 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted. The larger the major axis 14 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12, the larger the pore spacing between adjacent fiber bundles 131.

[0062] Therefore, by adjusting the pore spacing of adjacent inter-beam pores 131, the density of the inter-beam pores 131 is adjusted, thereby regulating the overall cooling gas flow rate through all inter-beam pores 131, thus macroscopically controlling the cooling effect on the ceramic matrix composite material 10. The adjustment method is simple, efficient, and easy to implement.

[0063] In some embodiments of the present invention, such as Figures 5-8 , Figure 11 As shown, the cross-sections of the first fiber bundle 111, the second fiber bundle 112, the third fiber bundle 121, and the fourth fiber bundle 122 are all constructed as ellipses. Adjusting the size of the interlayer pore 132 along the first direction includes: adjusting the minor axis 15 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 to adjust the size of the interlayer pore 132 along the first direction; and / or, adjusting the minor axis 15 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 to adjust the size of the interlayer pore 132 along the first direction.

[0064] If the size of the interlayer pore 132 along the first direction is to be adjusted, the minor axis 15 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted, that is, the minor axis 15 of the first fiber bundle 111 in the corresponding first fiber bundle group 11 can be adjusted to adjust the size of the interlayer pore 132 along the first direction, or the minor axis 15 of the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted to adjust the size of the interlayer pore 132 along the first direction, or the minor axis 15 of the first fiber bundle 111 and the minor axis 15 of the second fiber bundle 112 in the corresponding first fiber bundle group 11 can be adjusted to adjust the size of the interlayer pore 132 along the first direction. The larger the minor axis 15 of the first fiber bundle 111 and / or the second fiber bundle 112 in the corresponding first fiber bundle group 11, the larger the inter-pore spacing of adjacent interlayer pores 132.

[0065] Similarly, if the size of the interlayer pore 132 along the first direction is to be adjusted, the minor axis 15 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted, that is, the minor axis 15 of the third fiber bundle 121 in the corresponding second fiber bundle group 12 can be adjusted to adjust the size of the interlayer pore 132 along the first direction, or the minor axis 15 of the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted to adjust the size of the interlayer pore 132 along the first direction, or the minor axis 15 of the third fiber bundle 121 and the minor axis 15 of the fourth fiber bundle 122 in the corresponding second fiber bundle group 12 can be adjusted to adjust the size of the interlayer pore 132 along the first direction. The larger the minor axis 15 of the third fiber bundle 121 and / or the fourth fiber bundle 122 in the corresponding second fiber bundle group 12, the larger the inter-pore spacing of adjacent interlayer pores 132.

[0066] As some embodiments of the present application, the size of the interlayer pore 132 along the first direction can range from 0.01 mm to 0.1 mm, and the size of the interlayer pore 132 along the first direction can be 0.01 mm, 0.05 mm, 0.1 mm, etc. Such settings can reasonably adjust the size of the interlayer pore 132 along the first direction to reasonably adjust the flow rate of the cooling gas.

[0067] In this way, by adjusting the inter-pore spacing of the adjacent interlayer pores 132, the density of the interlayer pores 132 can be adjusted, and the total flow rate through all the interlayer pores 132 can be adjusted to macroscopically control the cooling effect on the ceramic matrix composite material 10. The adjustment method is simple, efficient, and easy to implement.

[0068] In some embodiments of the present application, the longitudinal sections of the first fiber bundles 111, the second fiber bundles 112, the third fiber bundles 121, and the fourth fiber bundles 122 are all configured as sinusoidal curves, and the size of the interlayer pore 132 along the first direction is adjusted by adjusting the amplitudes of the first fiber bundles 111 and / or the second fiber bundles 112 in the corresponding first fiber bundle group 11, and / or by adjusting the amplitudes of the third fiber bundles 121 and / or the fourth fiber bundles 122 in the corresponding second fiber bundle group 12.

[0069] In some embodiments of the present application, the longitudinal sections of the first fiber bundles 111, the second fiber bundles 112, the third fiber bundles 121, and the fourth fiber bundles 122 are all configured as sinusoidal curves, and the size of the interlayer pore 132 along the first direction is adjusted by adjusting the amplitudes of the first fiber bundles 111 and / or the second fiber bundles 112 in the corresponding first fiber bundle group 11, and / or by adjusting the amplitudes of the third fiber bundles 121 and / or the fourth fiber bundles 122 in the corresponding second fiber bundle group 12.

[0070] In some embodiments of the present application, the longitudinal sections of the first fiber bundles 111, the second fiber bundles 112, the third fiber bundles 121, and the fourth fiber bundles 122 are all configured as sinusoidal curves, and the size of the interlayer pore 132 along the first direction is adjusted by adjusting the amplitudes of the first fiber bundles 111 and / or the second fiber bundles 112 in the corresponding first fiber bundle group 11, and / or by adjusting the amplitudes of the third fiber bundles 121 and / or the fourth fiber bundles 122 in the corresponding second fiber bundle group 12.

[0071] In some embodiments of the present application, the longitudinal sections of the first fiber bundles 111, the second fiber bundles 112, the third fiber bundles 121, and the fourth fiber bundles 122 are all configured as sinusoidal curves, and the size of the interlayer pore 132 along the first direction is adjusted by adjusting the amplitudes of the first fiber bundles 111 and / or the second fiber bundles 112 in the corresponding first fiber bundle group 11, and / or by adjusting the amplitudes of the third fiber bundles 121 and / or the fourth fiber bundles 122 in the corresponding second fiber bundle group 12.

[0072] Therefore, by adjusting the size of the interlaminar pores 132 in the first direction, the flow of cooling gas through the interlaminar pores 132 can be adjusted, the larger the interlaminar pores 132, the greater the flow of cooling gas, and the better the cooling effect of the ceramic matrix composite 10.

[0073] In some embodiments of the present application, as shown in Figure 9 The parameter adjustment method further comprises adjusting the path of the percolation channel 13.

[0074] It should be noted that the shortest path of the percolation channel 13 is approximately equal to the thickness dimension of the ceramic matrix composite 10. When the percolation channel 13 has the shortest path, the extension direction of the plurality of interlaminar pores 131 forming the percolation channel 13 is parallel to the first direction, and the path through which the cooling gas flows through the percolation channel 13 with the shortest path is shorter. In this case, the ceramic matrix composite 10 has less resistance to the flow of cooling gas, making the flow of cooling gas more smooth, which is beneficial to improve the cooling capacity of the cooling gas on the ceramic matrix composite 10. In some positions of the ceramic matrix composite 10, a too strong cooling capacity is not required, and the path of the percolation channel 13 can be appropriately lengthened to generate a certain resistance to the flow of cooling gas, so as to appropriately reduce the cooling capacity of the cooling gas on the ceramic matrix composite 10. The cooling capacity of the cooling gas on the ceramic matrix composite 10 is adapted to the required cooling effect, and the cooling gas can be saved, which is beneficial to improve the use reliability of the ceramic matrix composite 10.

[0075] In some embodiments of the present application, as shown in Figure 2 Adjusting the path of the percolation channel 13 comprises rotating at least one fiber cloth 1 about the first direction to adjust the path of the percolation channel 13.

[0076] The path of the percolation channel 13 is adjusted by rotating at least one fiber cloth 1 about the first direction, thereby achieving the effect of controlling the cooling capacity of the cooling gas on the ceramic matrix composite 10. As some embodiments of the present application, at least one fiber cloth 1 is rotated about the first direction, so that the fiber cloth 1 adjacent to the rotated fiber cloth 1 is misaligned with the rotated fiber cloth 1, and the interlaminar pores 131 of the fiber cloth 1 adjacent to the rotated fiber cloth 1 are misaligned with the interlaminar pores 131 of the rotated fiber cloth 1, so as to lengthen the path of the percolation channel 13, increase the flow resistance of the cooling gas, and reduce the flow of the cooling gas, thereby achieving the effect of controlling the cooling capacity of the cooling gas on the ceramic matrix composite 10.

[0077] In some embodiments of the present application, as shown in Figure 3 The parameter adjustment method further comprises adjusting the angle between the percolation channel 13 and the first direction to change the orientation of the percolation channel 13.

[0078] The angle between the seepage channel 13 and the first direction can be adjusted by changing the interlayer phase displacement, that is, the adjacent two fiber cloths 1 are arranged in a staggered manner to change the orientation of the seepage channel 13, so that the orientation of the seepage channel 13 is at an angle with the first direction, the length of the seepage channel 13 is extended, and the outflow angle of the cooling gas can be reduced to generate a certain resistance to the flow of the cooling gas, so as to appropriately reduce the cooling capacity of the cooling gas on the ceramic matrix composite material 10, so that the cooling capacity of the cooling gas on the ceramic matrix composite material 10 is adapted to the required cooling effect, and the cooling gas can be saved, which is beneficial to improve the use reliability of the ceramic matrix composite material 10.

[0079] In some embodiments of the present application, adjusting the angle between the seepage channel 13 and the first direction includes defining the multiple fiber cloths 1 arranged in the first direction in sequence as a first fiber cloth, a second fiber cloth, a third fiber cloth, and an Nth fiber cloth, and adjusting the angle between the seepage channel 13 and the first direction by moving the Nth fiber cloth relative to the (N-1)th fiber cloth in a direction parallel to the first plane and orthogonal to the first direction. The total displacement of all fiber cloths 1 is less than the size of the interbundle pore 131 in the corresponding direction.

[0080] Specifically, the multiple fiber cloths 1 arranged in the first direction in sequence are defined as a first fiber cloth, a second fiber cloth, a third fiber cloth, and an Nth fiber cloth, a plane orthogonal to the first direction is defined as a first plane, and the Nth fiber cloth is moved relative to the (N-1)th fiber cloth in a direction parallel to the first plane by a preset size, so that the Nth fiber cloth and the (N-1)th fiber cloth are arranged in a staggered manner in the direction parallel to the first plane. In this way, the seepage channel 13 can be at an angle with the first direction, the length of the seepage channel 13 can be extended, a certain resistance can be generated to the flow of the cooling gas, and the cooling capacity of the cooling gas on the ceramic matrix composite material 10 can be appropriately reduced. It should be noted that the total displacement of all fiber cloths 1 (the sum of all preset sizes) is less than the size of the interbundle pore 131 in the corresponding direction, so that the seepage channel 13 can allow the cooling gas to flow through, and the seepage channel 13 can normally play its due role.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0082] In the description of the application, "first feature", "second feature" can include one or more of the features.

[0083] In the description of the application, "a plurality of" means two or more.

[0084] In the description of the application, "on" or "under" the first feature in the second feature can include the first and second features directly contact, but also can include the first and second features are not directly contact but through the additional features between them contact.

[0085] In the description of the application, the first feature "on", "above" and "over" the second feature includes the first feature directly above and obliquely above the second feature, or just means the first feature is higher than the second feature in level.

[0086] In the description of the application, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0087] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A method for adjusting parameters of a ceramic matrix composite plain weave prefabricated skeleton used in aero-engines, characterized in that, The ceramic matrix composite material includes: multiple layers of fiber cloth arranged sequentially along a first direction, wherein any two adjacent layers of fiber cloth jointly define interlayer pores; the fiber cloth includes: a plurality of first fiber bundles and a plurality of second fiber bundles arranged alternately along a second direction, and a plurality of third fiber bundles and a plurality of fourth fiber bundles arranged alternately along a third direction; any two of the first direction, the second direction, and the third direction are orthogonal. The first fiber bundle and the second fiber bundle are both woven with a plurality of third fiber bundles and a plurality of fourth fiber bundles. Along the first direction, the position where the first fiber bundle contacts the third fiber bundle is located on the upper side of the corresponding third fiber bundle, the position where the first fiber bundle contacts the fourth fiber bundle is located on the lower side of the corresponding fourth fiber bundle, the position where the second fiber bundle contacts the third fiber bundle is located on the lower side of the corresponding third fiber bundle, and the position where the first fiber bundle contacts the fourth fiber bundle is located on the upper side of the corresponding fourth fiber bundle. The first fiber bundle and any adjacent second fiber bundle constitute a first fiber bundle group, and the third fiber bundle and any adjacent fourth fiber bundle constitute a second fiber bundle group. The first fiber bundle group and the second fiber bundle group together define inter-bundle pores. Along the first direction, a plurality of opposing inter-bundle pores and a plurality of interlayer pores together constitute a permeation channel. The permeation channel is configured as a flow path for cooling gas, so that the cooling gas permeates through the permeation channel to the side of the ceramic matrix composite material facing the high-temperature airflow for sweating cooling. The cross-sections of the first fiber bundle, the second fiber bundle, the third fiber bundle, and the fourth fiber bundle are all constructed as ellipses; The longitudinal sections of the first fiber bundle, the second fiber bundle, the third fiber bundle, and the fourth fiber bundle are all constructed as sine curves; The parameter adjustment method includes: Adjust the size of the inter-beam aperture; Adjust the pore spacing between adjacent inter-beam pores; Adjust the size of the interlayer pores along the first direction; Wherein, adjusting the size of the interlayer pores along the first direction includes: The size of the interlayer pores along the first direction is adjusted by adjusting the short axis of the first fiber bundle and / or the second fiber bundle in the corresponding first fiber bundle group, and the size of the interlayer pores along the first direction is adjusted by adjusting the short axis of the third fiber bundle and / or the fourth fiber bundle in the corresponding second fiber bundle group. Furthermore, the size of the interlayer porosity along the first direction is adjusted by adjusting the amplitude of the first fiber bundle and / or the second fiber bundle in the corresponding first fiber bundle group; and the size of the interlayer porosity along the first direction is adjusted by adjusting the amplitude of the third fiber bundle and / or the fourth fiber bundle in the corresponding second fiber bundle group.

2. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 1, characterized in that, The adjustment of the size of the inter-beam aperture includes: The size of the inter-fiber pore is adjusted by adjusting the spacing between the first fiber bundle and the second fiber bundle in the corresponding first fiber bundle group; and / or, the size of the inter-fiber pore is adjusted by adjusting the spacing between the third fiber bundle and the fourth fiber bundle in the corresponding second fiber bundle group.

3. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 1, characterized in that, The adjustment of the pore spacing between adjacent inter-beam pores includes: The size of the inter-fiber pores is adjusted by adjusting the width of the first fiber bundle and / or the second fiber bundle in the corresponding first fiber bundle group; and / or, the size of the inter-fiber pores is adjusted by adjusting the width of the third fiber bundle and / or the fourth fiber bundle in the corresponding second fiber bundle group.

4. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 1 or 3, characterized in that, The adjustment of the pore spacing between adjacent inter-beam pores includes: The size of the inter-fiber pores is adjusted by adjusting the long axis of the first fiber bundle and / or the second fiber bundle in the corresponding first fiber bundle group; and / or, the size of the inter-fiber pores is adjusted by adjusting the long axis of the third fiber bundle and / or the fourth fiber bundle in the corresponding second fiber bundle group.

5. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 1, characterized in that, The parameter adjustment method further includes: Adjust the path of the seepage channel.

6. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 5, characterized in that, The path for adjusting the seepage channel includes: Rotate at least one of the fiber cloths about the first direction as an axis to adjust the path of the permeation channel.

7. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 1, characterized in that, The parameter adjustment method further includes: Adjust the angle between the seepage channel and the first direction to change the orientation of the seepage channel.

8. The parameter adjustment method for the plain weave prefabricated ceramic matrix composite skeleton applied to aero-engines according to claim 7, characterized in that, Adjusting the angle between the seepage channel and the first direction includes: The plurality of fiber cloths arranged sequentially along the first direction are defined as first fiber cloth, second fiber cloth, third fiber cloth... Nth fiber cloth. The Nth fiber cloth is displaced by a preset size relative to the (N-1)th fiber cloth in a direction parallel to the first plane. The first plane is orthogonal to the first direction to adjust the angle between the seepage channel and the first direction. The total displacement of all the fiber cloths is less than the size of the inter-bundle pores along the corresponding direction.

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