A heat-proof soft structure with anti-pull function and its design method

Abstract

The present invention provides a heat-resistant soft structure with an anti-pull function and a design method thereof, comprising the following steps: (1) determining the rotation center O of the launch tube; (2) determining the maximum swing angle φ; (3) determining the position and number of the inner nail hole and the outer nail hole on the heat-resistant soft structure; (4) calculating the inner ring intersection point n i Radius of rotation R i , moving distance U i , unit vector n ip With motion vector n in (5) Calculate the distance R between the inner ring intersection and the outer ring after clockwise rotation ip ; (6) The adjacent inner ring intersection n i Intersection point n with the corresponding adjacent outer ring j After the heat-resistant soft structure with anti-pull function of the present invention is installed with the heat-resistant base plate and the launch tube, the overhang does not exceed 20% of the maximum size of the heat-resistant base plate opening, thereby meeting the requirement that the heat flow from the launch tube does not directly impact the heat-resistant soft structure.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace, and in particular relates to a heat-proof soft structure with an anti-pull function and a design method thereof. Background Art

[0002] The surrounding structure of a rocket launch tube requires heat protection. If the launch tube is required to swing, static structures such as heat shields cannot be used around the launch tube. Instead, a soft heat shield structure must be used to accommodate the swinging requirements. The soft heat shield structure must meet the heat protection requirements and provide space for the launch tube to swing and pull. The soft heat shield structure cannot withstand the direct impact of the launch tube's heat flux, so the overhang must be limited during the design process. The soft heat shield structure design cannot be infinitely enlarged to meet the swing requirements. Therefore, the soft heat shield structure requires precise sizing methods. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a heat-proof soft structure with an anti-pull function and a design method thereof.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A method for designing a heat-resistant soft structure with an anti-pull function comprises the following steps:

[0006] (1) Determine the rotation center O of the launch tube and establish a three-dimensional coordinate axis with the rotation center as the origin;

[0007] (2) Determine the maximum swing angle φ, -8°≤φ≤8°;

[0008] (3) Determine the positions and numbers of the inner and outer nail holes on the heat-resistant soft structure, and determine the inner ring intersection point n of the heat-resistant soft structure. i Intersection point n with the outer ring j ,

[0009] (4) Determine the distance G between the center point of the inner nail hole and the inner ring i , the distance G between the center point of the outer nail hole and the outer ring j , the diameter of the inner nail hole D i and outer nail hole diameter D j ;

[0010] (5) Calculate the inner ring intersection point n i Radius of rotation R i , moving distance U i With motion vector n in ;

[0011] (6) Calculate the distance R between the inner ring intersection and the outer ring after clockwise rotation ip, the distance R from the outer ring after counterclockwise rotation in , calculate the radial design width W i And measure the distance L between adjacent inner ring intersections i The distance L between the adjacent outer ring intersection j ;

[0012] (7) The adjacent inner ring intersection points n i Intersection point n with the corresponding adjacent outer ring j Construct a quadrilateral, combine the quadrilaterals to get the outline of the heat-resistant soft structure, establish a two-dimensional coordinate axis with the inner ring intersection of the first quadrilateral as the origin, and calculate the inner ring intersection n i Intersection point n with the outer ring j Coordinates in two-dimensional coordinate axes;

[0013] (8) The coordinates of the center points of the inner nail hole and the outer nail hole are calculated in two-dimensional coordinates to obtain a heat-resistant soft structure with an anti-pull function.

[0014] Furthermore, the three directions of the three-dimensional coordinate axes in step (1) are represented by the X-axis, the Y-axis and the Z-axis, the rotation center O is located at the origin of the coordinate axis, and the launch tube swings around the Z-axis; the maximum swing angle φ in step (2) is the angle between the X-axis and the center line of the launch tube.

[0015] Furthermore, the inner ring intersection n in step (3) is i The intersection of the inner ring of the heat-resistant soft structure with the geometric center point O' and the inner nail hole center point and the outer nail hole center point is n. j The intersection of the geometric center point O' of the inner ring of the heat-proof soft structure and the extension line of the line connecting the center point of the inner nail hole and the center point of the outer nail hole with the outer ring; the inner nail hole is located at the edge of the inner ring; the outer nail hole is located at the edge of the outer ring; the sum of the number of the inner nail holes and the outer nail holes and the intersection point n of the inner ring i The sum of the number of inner nail holes and outer nail holes and the outer ring intersection n j The same number.

[0016] Furthermore, the distance G between the center point of the inner nail hole and the inner ring in step (4) is i Specifically: the center point of the inner nail hole and the intersection point of the inner ring n i The distance between the center point of the outer nail hole and the outer ring in step (4) G j Specifically: the center point of the outer nail hole and the intersection point n of the outer ring j the distance between them;

[0017] Furthermore, the rotation radius R in step (5) is i is the intersection point n between the rotation center O and the inner ring i The projection length of the spatial distance in the rotation plane; the inner ring intersection n i Radius of rotation R i As shown in formula (I):

[0018]

[0019] The moving distance U in step (5) is i As shown in formula (II):

[0020] U i =2×sin(5°)×R i Formula (II);

[0021] The motion vector n in step (5) is in As shown in formula (III):

[0022]

[0023] Furthermore, the distance R between the inner ring intersection point and the outer ring after clockwise rotation in step (6) is ip As shown in formula (IV):

[0024] Formula (IV);

[0025] The distance R between the inner ring intersection point and the outer ring after counterclockwise rotation in step (6) in As shown in formula (V):

[0026] Formula (V).

[0027] Considering the influencing factors such as the thickness of the heat-resistant soft structure, the design margin is provided by magnifying it by 1.2 times. The radial design width of the heat-resistant soft structure at each rotation point is W i As shown in formula (X):

[0028] W i =max(R ip ,R in )*1.2 Formula (Ⅹ).

[0029] Furthermore, the adjacent inner ring intersection points n in step (7) are i Intersection point n with the corresponding adjacent outer ring j In the quadrilateral formed: adjacent inner ring intersection point n i The intersection point n of the connecting line and the corresponding adjacent inner ring i 、Outer ring intersection n jThe angle between the lines is 80-100 degrees; the two directions of the two-dimensional coordinate axis are represented by the x-axis and the y-axis; the origin of the two-dimensional coordinate axis is the inner ring intersection point n of the starting side of the first quadrilateral i (i=1), the inner ring intersection point n of the starting edge i (i=1) points to the outer ring intersection point n of the starting edge j The direction of (j=1) is the y-axis direction, and the inner ring intersection point n of the starting edge i (i=1) points to the second inner ring intersection n i The angle between the direction of (i=2) and the positive direction of the x-axis is an acute angle; the inner ring intersection point n i The coordinates in the two-dimensional coordinate axis are (m ix 、m iy ), outer ring intersection point n j The coordinates in the two-dimensional coordinate axis are (m jx 、m jy ).according to Figure 4 The order of the edges and the adjacent inner ring intersection points n i The intersection point n of the connecting line and the corresponding adjacent inner ring i 、Outer ring intersection n j The angle between the lines can uniquely determine the intersection points n of each inner ring in the coordinate system. i Intersection point n with the outer ring j Coordinates in a two-dimensional coordinate system.

[0030] Furthermore, the center point coordinates of the inner nail hole in step (8) (Nail ix , Nail iy ) are respectively represented by formula (VI) and (VII):

[0031] Nail ix =m ix -(m ix -m jx )×G i / W i Formula (VI)

[0032] Nail iy =m iy -(m iy -m jy )×G i / W i Formula (VII);

[0033] The center point coordinates of the outer nail hole (Nail jx , Nail jy ) are respectively represented by formula (VIII) and (IX):

[0034] Nail jx =m jx -(mjx -m ix )×G j / W i Formula (VIII)

[0035] Nail jy =m jy -(m jy -m iy )×G j / W i Formula (IX).

[0036] The first step of the method is to calculate the swing data of the launch tube and obtain the displacement information of the connection position between the launch tube and the heat-resistant soft structure. The launch tube moves clockwise or counterclockwise in a plane perpendicular to the Z axis. The second step is to establish the heat-resistant soft structure through the obtained data.

[0037] The method further includes: step (9) measuring the maximum dimension Length of the opening in the swing direction of the heat-proof bottom plate, and calculating and verifying the overhang amount Droop of the heat-proof soft structure. i .

[0038] The overhang amount Droop in the step (9) i As shown in formula (XI):

[0039]

[0040] A heat-proof soft structure with an anti-pull function, the planar shape of the heat-proof soft structure is a fan-shaped structure, and a three-dimensional frustum structure is obtained by connecting the two sides of the fan-shaped structure. The inner ring at the top of the heat-proof soft structure is connected to the launch tube, and the outer ring at the bottom is connected to the heat-proof bottom plate; the inner ring is circular, and the outer ring is irregular in shape; a plurality of inner nail holes are provided at the edge of the inner ring, and a plurality of outer nail holes are provided at the edge of the outer ring.

[0041] Furthermore, the number of the inner nail holes and the outer nail holes is the same, and the overhang of the heat-proof soft structure is less than or equal to 20% of the maximum size of the heat-proof bottom plate opening, thereby meeting the requirement that the heat flow from the nozzle does not directly impact the heat-proof soft structure.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] When installed with the heat shield and launch tube, the anti-pull soft heat shield structure described in this invention has an overhang of no more than 20% of the maximum opening of the heat shield, thus ensuring that the heat from the launch tube does not directly impact the soft heat shield. The soft heat shield is protected from pulling damage during the launch tube's swing, maintaining the original material's heat shielding properties and preventing heat from rebounding from the ground from entering the rocket, thereby maintaining the rocket's internal temperature within the required range.

[0044] The calculation methods of steps (5), (6), (7) and (8) in the design method of the heat-resistant soft structure with an anti-pull function described in the present invention are suitable for programming calculations, and the calculation results of steps (7) and (8) are suitable for parametric modeling. Therefore, this method can meet the requirements of rapid design of structural schemes. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0046] Figure 1 A schematic diagram of a heat-resistant soft structure with an anti-pull function according to an embodiment of the present invention;

[0047] Figure 2 A side view of a heat-resistant soft structure with an anti-pull function according to an embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of a quadrilateral according to an embodiment of the present invention;

[0049] Figure 4 This is an expanded view of the heat-resistant soft structure with anti-pull function described in Example 1 of the present invention.

[0050] Figure 5 This is an expanded view of the heat-resistant soft structure with anti-pull function described in Example 2 of the present invention.

[0051] Description of reference numerals:

[0052] 1. Heat-resistant soft structure; 2. Launch tube; 3. Heat-resistant plate; 4. Inner nail hole; 5. Outer nail hole; 6. Extension line; 7. Rotation center. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] Example 1

[0058] A method for designing a heat-resistant soft structure with an anti-pull function comprises the following steps:

[0059] (1) Determine the rotation center O of the launch tube and establish a three-dimensional coordinate axis with the rotation center as the center. The three directions of the three-dimensional coordinate axis are represented by the X axis, Y axis and Z axis. The rotation center O is located at the origin of the coordinate axis (O x , O y , O z ), the launch tube swings around the Z axis;

[0060] (2) Determine the maximum swing angle φ, φ = 8°;

[0061] (3) Determine the positions and numbers of the inner and outer nail holes on the heat-resistant soft structure, and determine the inner ring intersection point n of the heat-resistant soft structure. i Intersection point n with the outer ring j , list n respectively i 、n j The first to third points of are shown in Table 1;

[0062] Table 1 Inner ring intersection point n i Intersection point n with the outer ring j Value

[0063]

[0064] (4) Determine the distance G between the center point of the inner nail hole and the inner ring i , the distance G between the center point of the outer nail hole and the outer ring j , the diameter of the inner nail hole D i and outer nail hole diameter D j , as shown in Table 2;

[0065] Table 2 G i , G j 、D i and D j Value

[0066] Serial number <![CDATA[G i (mm)]]> <![CDATA[D i (mm)]]> <![CDATA[G j (mm)]]> <![CDATA[D j (mm)]]> 1 15 10 none none 2 none none 8.42 9 3 15 10 none none

[0067] (5) Calculate the first three inner ring intersection points n i Radius of rotation R i , moving distance U i With motion vector n in , as shown in Table 3;

[0068] Table 3 R i 、U i With n in Value

[0069] Serial number <![CDATA[R i (mm)]]> <![CDATA[U i (mm)]]> x-direction motion vector (mm) Y-direction motion vector (mm) 1 1259.19 176.14 40.19 -171.50 2 1247.25 174.47 32.10 -171.50 3 1241.98 173.73 27.81 -171.50

[0070] (6) Calculate the distance R between the inner ring intersection and the outer ring after clockwise rotation ip , the distance R from the outer ring after counterclockwise rotation in , calculate the radial design width W i And measure the distance L between adjacent inner ring intersections i The distance L between the adjacent outer ring intersection j , as shown in Table 4;

[0071] Table 4 Parameters for calculating and constructing the planar fan-shaped structure

[0072] Serial number <![CDATA[R ip (mm)]]> <![CDATA[R in (mm)]]> <![CDATA[W i (mm)]]> <![CDATA[L i (mm)]]> <![CDATA[L j (mm)]]> 1 164.46 395.97 475.16 80.47 134.78 2 173.83 343.40 412.08 37.38 61.03 3 176.87 315.58 378.70

[0073] (7) The adjacent inner ring intersection points n i Intersection point n with the corresponding adjacent outer ring j The angle between the line connecting the adjacent inner ring intersection points ni and the corresponding line connecting the adjacent inner ring intersection points ni and outer ring intersection points nj is 90 degrees. The outline of the heat-resistant soft structure is obtained by combining the quadrilaterals. The inner ring intersection point nj of the first quadrilateral is the inner ring intersection point nj.i (i=1) is the origin to establish a two-dimensional coordinate axis, and the inner ring intersection point n of the starting edge i (i=1) points to the outer ring intersection point n of the starting edge j The direction of (j=1) is the y-axis direction, and the inner ring intersection point n of the starting edge i (i=1) points to the second inner ring intersection n i The angle between the direction of (i=2) and the positive direction of the x-axis is acute, and the inner ring intersection point n is calculated respectively. i Intersection point n with the outer ring j Coordinates in two-dimensional coordinate axes;

[0074] (8) Calculate the center coordinates of the inner nail hole and the outer nail hole in two-dimensional coordinates to obtain a heat-resistant soft structure with anti-pull function. ix 、Nail iy 、Nail jx 、Nail jy As shown in Table 5;

[0075] Table 5 Nail ix 、Nail iy 、Nail jx 、Nail jy Value

[0076]

[0077]

[0078] (9) The maximum size of the heat-resistant bottom plate opening is measured to be 1500 mm, and the overhang of the design structure is calculated as follows. The overhang meets the design requirements.

[0079] Table 6 Overhang

[0080] Serial number Overhang (mm) Overhang / opening size 1 265.39 0.08 2 231.96 0.10 3 189.81 0.12

[0081] A heat-proof soft structure with an anti-pull function. The plane shape of the heat-proof soft structure is a fan-shaped structure. After connecting the two sides of the fan-shaped structure, a three-dimensional truncated cone structure is obtained. The inner ring of the top of the heat-proof soft structure is connected to the launch tube, and the outer ring at the bottom is connected to the heat-proof bottom plate; the inner ring is circular, and the outer ring is irregular in shape; 20 inner nail holes are provided on the edge of the inner ring, and 25 outer nail holes are provided on the edge of the outer ring. The plane design state is as follows Figure 4 The overhang of the heat-proof soft structure is less than or equal to 25% of the maximum size of the heat-proof bottom plate opening, thereby meeting the requirement that the heat flow from the spray gun does not directly impact the heat-proof soft structure.

[0082] Example 2

[0083] A method for designing a heat-resistant soft structure with an anti-pull function comprises the following steps:

[0084] (1) Determine the rotation center O of the launch tube and establish a three-dimensional coordinate axis with the rotation center as the center. The three directions of the three-dimensional coordinate axis are represented by the X axis, Y axis and Z axis. The rotation center O is located at the origin of the coordinate axis (O x , O y , O z ), the launch tube swings around the Z axis;

[0085] (2) Determine the maximum swing angle φ, φ = 8°;

[0086] (3) Determine the positions and numbers of the inner and outer nail holes on the heat-resistant soft structure, and determine the inner ring intersection point n of the heat-resistant soft structure. i Intersection point n with the outer ring j , list n respectively i 、n j The first to third points of are shown in Table 7;

[0087] Table 7 Inner ring intersection point n i Intersection point n with the outer ring j Value

[0088]

[0089] (4) Determine the distance G between the center point of the inner nail hole and the inner ring i , the distance G between the center point of the outer nail hole and the outer ring j , the diameter of the inner nail hole D i and outer nail hole diameter D j , as shown in Table 8;

[0090] Table 8 G i , G j 、D i and D j Value

[0091] Serial number <![CDATA[G i (mm)]]> <![CDATA[D i (mm)]]> <![CDATA[G j (mm)]]> <![CDATA[D j (mm)]]> 1 15 10 none none 2 none none 15 10 3 15 10 none none

[0092] (5) Calculate the first three inner ring intersection points n i Radius of rotation R i , moving distance U i With motion vector n in , as shown in Table 9;

[0093] Table 9 R i 、U i With n in Value

[0094] Serial number <![CDATA[R i (mm)]]> <![CDATA[U i (mm)]]> x-direction motion vector (mm) Y-direction motion vector (mm) 1 1249.418 174.775724 33.704339 -171.495 2 1243.102 173.892214 28.773788 -171.495 3 1233.979 172.616029 19.639812 -171.495

[0095] (6) Calculate the distance R between the inner ring intersection and the outer ring after clockwise rotation ip , the distance R from the outer ring after counterclockwise rotation in , calculate the radial design width W i And measure the distance L between adjacent inner ring intersections i The distance L between the adjacent outer ring intersection j , as shown in Table 10;

[0096] Table 10 Parameters for calculating and constructing a planar fan-shaped structure

[0097]

[0098]

[0099] (7) The adjacent inner ring intersection points n i Intersection point n with the corresponding adjacent outer ring j The angle between the line connecting the adjacent inner ring intersection points ni and the corresponding line connecting the adjacent inner ring intersection points ni and outer ring intersection points nj is 90 degrees. The outline of the heat-resistant soft structure is obtained by combining the quadrilaterals. The inner ring intersection point nj of the first quadrilateral is the inner ring intersection point nj. i (i=1) is the origin to establish a two-dimensional coordinate axis, and the inner ring intersection point n of the starting edge i (i=1) points to the outer ring intersection point n of the starting edge j The direction of (j=1) is the y-axis direction, and the inner ring intersection point n of the starting edge i (i=1) points to the second inner ring intersection n i The angle between the direction of (i=2) and the positive direction of the x-axis is acute, and the inner ring intersection point n is calculated respectively. i Intersection point n with the outer ring j Coordinates in two-dimensional coordinate axes;

[0100] (8) Calculate the center coordinates of the inner nail hole and the outer nail hole in two-dimensional coordinates to obtain a heat-resistant soft structure with anti-pull function. ix 、Nail iy 、Nail jx 、Nail jy As shown in Table 11.

[0101] Table 11 Nail ix 、Nail iy 、Nail jx 、Nail jy Value

[0102] Serial number <![CDATA[Nail ix (mm)]]> <![CDATA[Nail iy (mm)]]> Inner hole radius (mm) <![CDATA[Nail jx (mm)]]> <![CDATA[Nail jy (mm)]]> Outer hole radius (mm) 1 0.00 490.16 5.00 none none none 2 none none none 117.40 73.20 4.50 3 115.79 493.46 5.00 none none none

[0103] (9) The maximum opening size of the heat-resistant base plate in the swing direction is measured to be 1400 mm. The overhang of the design structure is calculated as follows. The overhang meets the design requirements.

[0104] Table 12 Overhang

[0105] Serial number Overhang (mm) Overhang / opening size 1 265.39 0.19 2 231.96 0.17 3 189.81 0.14

[0106] A heat-proof soft structure with an anti-pull function, the plane shape of the heat-proof soft structure is a fan-shaped structure, and the two sides of the fan-shaped structure are connected to form a three-dimensional truncated cone structure. The inner ring at the top of the heat-proof soft structure is connected to the launch tube, and the outer ring at the bottom is connected to the heat-proof bottom plate; the inner ring is circular, and the outer ring is irregular; 20 inner nail holes are provided on the edge of the inner ring, and 20 outer nail holes are provided on the edge of the outer ring. The plane design state is as follows Figure 5 The overhang of the heat-proof soft structure is less than or equal to 25% of the maximum size of the heat-proof bottom plate opening, thereby meeting the requirement that the heat flow from the spray gun does not directly impact the heat-proof soft structure.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for designing a heat-resistant soft structure with an anti-pull function, characterized by: The steps include: (1) Determine the launch tube's rotation center O and establish a three-dimensional coordinate axis with the rotation center as the origin; (2) Determine the maximum swing angle φ, -8°≤φ≤8°; (3) Determine the positions and numbers of the inner and outer nail holes on the heat-resistant soft structure, and determine the inner ring intersection point n of the heat-resistant soft structure. i Intersection point n with the outer ring j , (4) Determine the distance G between the center point of the inner nail hole and the inner ring i , the distance G between the center point of the outer nail hole and the outer ring j , the diameter of the inner nail hole D i and outer nail hole diameter D j ; (5) Calculate the inner ring intersection point n i Radius of rotation R i , moving distance U i With motion vector n in ; (6) Calculate the distance R between the inner ring intersection and the outer ring after clockwise rotation ip , the distance R from the outer ring after counterclockwise rotation in , calculate the radial design width W i And measure the distance L between adjacent inner ring intersections i The distance L between the adjacent outer ring intersection j ; (7) The adjacent inner ring intersection points n i Intersection point n with the corresponding adjacent outer ring j Construct a quadrilateral, combine the quadrilaterals to get the outline of the heat-resistant soft structure, establish a two-dimensional coordinate axis with the inner ring intersection of the first quadrilateral as the origin, and calculate the inner ring intersection n i Intersection point n with the outer ring j Coordinates in two-dimensional coordinate axes; (8) The coordinates of the center points of the inner nail hole and the outer nail hole are calculated in two-dimensional coordinates to obtain a heat-resistant soft structure with anti-pull function.

2. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, characterized in that: The three directions of the three-dimensional coordinate axes in step (1) are represented by the X-axis, the Y-axis and the Z-axis, the rotation center O is located at the origin of the coordinate axes, and the launch tube swings around the Z-axis; the maximum swing angle φ in step (2) is the angle between the X-axis and the center line of the launch tube.

3. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, characterized in that: The inner ring intersection point n in step (3) i The intersection of the inner ring of the heat-resistant soft structure with the geometric center point O' and the inner nail hole center point and the outer nail hole center point is n. j The intersection of the geometric center point O' of the inner ring of the heat-proof soft structure and the extension line of the line connecting the center point of the inner nail hole and the center point of the outer nail hole with the outer ring; the inner nail hole is located at the edge of the inner ring; the outer nail hole is located at the edge of the outer ring; the sum of the number of the inner nail holes and the outer nail holes and the intersection point n of the inner ring i The sum of the number of inner nail holes and outer nail holes and the outer ring intersection n j The same number.

4. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, wherein: The distance G between the center point of the inner nail hole and the inner ring in step (4) is i Specifically: the center point of the inner nail hole and the intersection point of the inner ring n i The distance between the center point of the outer nail hole and the outer ring in step (4) G j Specifically: the center point of the outer nail hole and the intersection point n of the outer ring j The distance between them.

5. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, wherein: The rotation radius R in step (5) is i is the intersection point n between the rotation center O and the inner ring i The projection length of the spatial distance in the rotation plane; the inner ring intersection n i Radius of rotation R i As shown in formula (I): Formula (I); The moving distance U in step (5) is i As shown in formula (II): Formula (II); The motion vector n in step (5) is in As shown in formula (III): Formula (III).

6. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, wherein: The distance R between the inner ring intersection point and the outer ring after clockwise rotation in step (6) ip As shown in formula (IV): Formula (IV); The distance R between the inner ring intersection point and the outer ring after counterclockwise rotation in step (6) in As shown in formula (V): Formula (V).

7. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, wherein: The adjacent inner ring intersection points n in step (7) are i Intersection point n with the corresponding adjacent outer ring j In the quadrilateral formed: adjacent inner ring intersection point n i The intersection point n of the connecting line and the corresponding adjacent inner ring i 、Outer ring intersection n j The angle between the lines is 80-100 degrees; the two directions of the two-dimensional coordinate axis are represented by the x-axis and the y-axis; the origin of the two-dimensional coordinate axis is the inner ring intersection point n of the starting side of the first quadrilateral i (i=1), the inner ring intersection point n of the starting edge i (i=1) points to the outer ring intersection point n of the starting edge j (j=1) is in the y-axis direction, and the inner ring intersection point n of the starting edge is i (i=1) points to the second inner ring intersection n i The direction of (i=2) is an acute angle with the positive direction of the x-axis; the inner ring intersection point n i The coordinates in the two-dimensional coordinate axis are (m ix 、m iy ), outer ring intersection point n j The coordinates in the two-dimensional coordinate axis are (m jx 、m jy ).

8. The method for designing a heat-resistant soft structure with an anti-pull function according to claim 1, wherein: The center point coordinates of the inner nail hole in step (8) (Nail ix , Nail iy ) are respectively represented by formula (VI) and (VII): Formula (VI) Formula (VII); The center point coordinates of the outer nail hole (Nail jx , Nail jy ) are respectively represented by formula (VIII) and (IX): Formula (VIII) Formula (IX).

9. A heat-resistant soft article with an anti-pull function, characterized in that: The planar shape of the heat-proof software is a fan-shaped structure, and the two sides of the fan-shaped structure are connected to obtain a three-dimensional frustum structure. The inner ring at the top of the heat-proof software is connected to the launch tube, and the outer ring at the bottom is connected to the heat-proof bottom plate; the inner ring is circular, and the outer ring is irregular in shape; a plurality of inner nail holes are provided at the edge of the inner ring, and a plurality of outer nail holes are provided at the edge of the outer ring. The heat-proof software is obtained by the design method described in any one of claims 1-8.

10. The heat-resistant soft body with anti-pull function according to claim 9, characterized in that: The overhang of the heat-proof soft body is less than or equal to 20% of the maximum size of the opening of the heat-proof bottom plate.

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