Self-adaptive pressure relief device for fairing of carrier rocket

Abstract

The utility model discloses a self-adaptive pressure relief device for a fairing of a carrier rocket, which relates to the technical field of spaceflight and comprises a pressure difference bearing device, a pressure difference adjusting device and a pressure relief area adjusting device, the pressure difference bearing device is connected with the pressure difference adjusting device, and the pressure difference bearing device is used for obtaining the pressure difference between the interior of the cabin section and the exterior of the cabin section and sending the pressure difference to the pressure adjusting device; the pressure difference adjusting device is connected with the pressure relief area adjusting device, the pressure difference adjusting device is used for moving the pressure relief area adjusting device to a corresponding adjusting position according to the pressure difference, the pressure relief area of the pressure relief hole is changed according to the shielding degree of the pressure relief area adjusting device to the hole opening of the pressure relief hole of the cabin section, and therefore the pressure relief rate is changed; the changed pressure difference is located in a preset pressure difference threshold value range. The structure is simple, the structural weight is light, and the pressure relief requirements of fairings of different shapes and sizes and different residual volumes can be met.

Description

Technical Field

[0001] This application relates to the field of aerospace technology, and particularly to an adaptive pressure relief device for a launch vehicle fairing. Background Art

[0002] A launch vehicle consists of multiple stages. There is a large unused volume at the connections between the stages and inside the fairing. During the ascent, the external environment changes extremely violently, which poses a great test to the structural strength of the rocket body. When the rocket ascends, the external pressure drops rapidly with altitude in a short time, while the internal pressure drops relatively slowly, thus forming an obvious pressure difference. Therefore, pressure relief holes are usually provided in each stage to reduce the pressure difference of the rocket body.

[0003] During the ascent of a launch vehicle, to avoid damage to the rocket body due to a large pressure difference, the structural strength of the rocket body is often increased. However, this will cause the overall weight of the launch vehicle to increase, thereby reducing the payload capacity of the rocket. Taking the fairing as an example, in order to adapt to various different payloads, the current pressure relief holes are usually designed conservatively, resulting in a large internal and external pressure difference. Therefore, it is required that the fairing has a high strength to ensure that it will not be damaged due to the large pressure difference. However, increasing the structural strength of the fairing will increase the weight of the fairing. Summary of the Utility Model

[0004] The purpose of this application is to provide an adaptive pressure relief device for a launch vehicle fairing, which has a simple structure, a light structural weight, and can meet the pressure relief requirements of fairings with different shapes and sizes and different remaining volumes.

[0005] To achieve the above object, the present application provides an adaptive pressure relief device for a launch vehicle fairing, comprising: a differential pressure bearing device, at least one differential pressure adjusting device, and at least one pressure relief area adjusting device; wherein, the differential pressure bearing device is disposed inside the cabin section, the differential pressure bearing device is connected to the differential pressure adjusting device, and the differential pressure bearing device is configured to obtain the differential pressure between the inside and outside of the cabin section and send the differential pressure to the pressure adjusting device; the differential pressure adjusting device is disposed inside the cabin section, the differential pressure adjusting device is connected to the pressure relief area adjusting device, and the differential pressure adjusting device is configured to move the pressure relief area adjusting device to a corresponding adjustment position according to the differential pressure, and change the pressure relief area of the pressure relief hole of the cabin section by changing the degree of orifice shielding of the pressure relief hole of the cabin section by the pressure relief area adjusting device, so as to change the pressure relief rate, such that the changed differential pressure is within a preset differential pressure threshold range; the pressure relief area adjusting device is disposed inside the cabin section, when the pressure relief area of the pressure relief hole of the cabin section is at the maximum value, the entire pressure relief area adjusting device is located outside the pressure relief hole, and the orifice shielding degree is 0%; when the pressure relief area of the pressure relief hole is between the maximum value and the minimum value, a part of the pressure relief area adjusting device is located at the pressure relief hole, the orifice shielding degree is greater than 0% and less than 90%; when the pressure relief area of the pressure relief hole is at the minimum value, the pressure relief hole is shielded by the pressure relief area adjusting device, and the orifice shielding degree is 90%.

[0006] As described above, wherein, the differential pressure bearing device is connected to the inner wall surface of the cabin section through at least one set of connecting members.

[0007] As described above, wherein, there are two sets of connecting members, namely: a first connecting member and a second connecting member; one end of the differential pressure bearing device is connected to the inner wall surface of the cabin section through the first connecting member, the other end of the differential pressure bearing device is connected to the inner wall surface of the cabin section through the second connecting member, and the pressure relief hole of the cabin section is located between the first connecting member and the second connecting member.

[0008] As described above, the first connecting member includes: a first vertical plate, a first upper triangular connecting member, a first inclined plate, and a first lower triangular connecting member; wherein, one end of the first vertical plate is connected to the inner wall surface of the cabin section, and one side of the first upper triangular connecting member is connected to one side of the first vertical plate; one end of the first inclined plate is connected to the vertex corresponding to the side of the first upper triangular connecting member that is connected to one side of the first vertical plate; the other end of the first inclined plate is connected to a vertex of the first lower triangular connecting member; the side of the first lower triangular connecting member corresponding to the vertex connected to the other end of the first inclined plate is connected to one end of the pressure difference bearing device; the second connecting member includes: a second vertical plate, a second upper triangular connecting member, a second inclined plate, and a second lower triangular connecting member; wherein, one end of the second vertical plate is connected to the inner wall surface of the cabin section, and one side of the second upper triangular connecting member is connected to one side of the second vertical plate; one end of the second inclined plate is connected to the vertex corresponding to the side of the second upper triangular connecting member that is connected to one side of the second vertical plate; the other end of the second inclined plate is connected to a vertex of the second lower triangular connecting member; the side of the second lower triangular connecting member corresponding to the vertex connected to the other end of the second inclined plate is connected to the other end of the pressure difference bearing device.

[0009] As described above, the first upper triangular connecting member includes: a first front upper triangular plate and a first rear upper triangular plate; one side of the first front upper triangular plate is connected to one side of the first vertical plate; one side of the first rear upper triangular plate is connected to one side of the first vertical plate; one end of the first inclined plate is located between the first front upper triangular plate and the first rear upper triangular plate, and is connected to the vertex corresponding to the side of the first front upper triangular plate that is connected to one side of the first vertical plate, and the vertex corresponding to the side of the first rear upper triangular plate that is connected to one side of the first vertical plate; the second upper triangular connecting member includes: a second front upper triangular plate and a second rear upper triangular plate; one side of the second front upper triangular plate is connected to one side of the second vertical plate; one side of the second rear upper triangular plate is connected to one side of the second vertical plate; one end of the second inclined plate is located between the second front upper triangular plate and the second rear upper triangular plate, and is connected to the vertex corresponding to the side of the second front upper triangular plate that is connected to one side of the second vertical plate, and the vertex corresponding to the side of the second rear upper triangular plate that is connected to one side of the second vertical plate.

[0010] As described above, wherein the first lower triangular connecting member includes: a first lower front triangular plate and a first lower rear triangular plate; the other end of the first inclined plate is located between the first lower front triangular plate and the first lower rear triangular plate, and is connected to a vertex of the first lower front triangular plate and a vertex of the first lower rear triangular plate; the side of the first lower front triangular plate corresponding to the vertex connected to the other end of the first inclined plate is connected to one end of the differential pressure bearing device; the side of the first lower rear triangular plate corresponding to the vertex connected to the other end of the first inclined plate is connected to one end of the differential pressure bearing device; the second lower triangular connecting member includes: a second lower front triangular plate and a second lower rear triangular plate; the other end of the second inclined plate is located between the second lower front triangular plate and the second lower rear triangular plate, and is connected to a vertex of the second lower front triangular plate and a vertex of the second lower rear triangular plate; the side of the second lower front triangular plate corresponding to the vertex connected to the other end of the second inclined plate is connected to the other end of the differential pressure bearing device; the side of the second lower rear triangular plate corresponding to the vertex connected to the other end of the second inclined plate is connected to the other end of the differential pressure bearing device.

[0011] As described above, wherein there is an inclination angle a between the first inclined plate and the plane where the differential pressure bearing device is located, and the inclination angle a faces the side of the first lower triangular connecting member close to the pressure relief hole; there is an inclination angle b between the second inclined plate and the plane where the differential pressure bearing device is located, and the inclination angle b faces the side of the second lower triangular connecting member close to the pressure relief hole.

[0012] As described above, wherein the differential pressure bearing device is a differential pressure sensor, one detection port of the differential pressure sensor is connected to the inside of the cabin section, the other detection port of the differential pressure sensor is connected to the outside of the cabin section, the differential pressure between the inside and the outside of the cabin section is obtained through the differential pressure sensor, and the differential pressure is sent to the pressure regulating device.

[0013] As described above, wherein there are two differential pressure regulating devices, namely: a first differential pressure regulating device and a second differential pressure regulating device; there are two pressure relief area regulating devices, namely: a first pressure relief area regulating device and a second pressure relief area regulating device; one end of the first differential pressure regulating device is connected to the inner wall surface of the cabin section, the other end of the first differential pressure regulating device is connected to the first pressure relief area regulating device, and one end of the first differential pressure regulating device is located on the side of the first connecting member away from the pressure relief hole; one end of the second differential pressure regulating device is connected to the inner wall surface of the cabin section, the other end of the second differential pressure regulating device is connected to the second pressure relief area regulating device, and one end of the second differential pressure regulating device is located on the side of the second connecting member away from the pressure relief hole.

[0014] As described above, wherein one end of the first differential pressure regulating device is connected to the inner wall surface of the cabin section through a first cabin section connecting device; one end of the second differential pressure regulating device is connected to the inner wall surface of the cabin section through a second cabin section connecting device.

[0015] The beneficial effects achieved by this application are as follows:

[0016] (1) The pressure relief device for the adaptive fairing of a launch vehicle according to the present application can effectively confirm the pressure difference envelope range and can be suitable for fairings of different shapes and sizes and different requirements for pressure relief of the remaining volume.

[0017] (2) The pressure relief device for the adaptive fairing of a launch vehicle according to the present application can reduce the maximum pressure difference, reduce the weight of the fairing, reduce the cost of the fairing, and improve the carrying capacity under the condition of determining the size and shape of the fairing.

[0018] (3) The pressure relief device for the adaptive fairing of a launch vehicle according to the present application is a modular product, which can improve the production efficiency of fairing design.

[0019] (4) The pressure relief device for the adaptive fairing of a launch vehicle according to the present application has a simple structure, a light structural weight, and can ensure that the structural strength meets the requirements.

[0020] (5) The pressure relief device for the adaptive fairing of a launch vehicle according to the present application has a high sensitivity and can quickly adjust the size of the pressure relief area according to the real-time change of the pressure difference during flight. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0022] Figure 1 It is a top view of an embodiment of the pressure relief device for the adaptive fairing of a launch vehicle;

[0023] Figure 2 It is a front view of an embodiment of the pressure relief device for the adaptive fairing of a launch vehicle;

[0024] Figure 3 It is a left view of an embodiment of the pressure relief device for the adaptive fairing of a launch vehicle. Detailed Embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] Such as Figures 1-3As shown in the figure, the present application provides an adaptive pressure relief device for a launch vehicle fairing, including: a pressure difference bearing device 1, at least one pressure difference regulating device 2, and at least one pressure relief area regulating device 3. Among them, the pressure difference bearing device 1 is arranged inside the cabin section 4, the pressure difference bearing device 1 is connected to the pressure difference regulating device 2, and the pressure difference bearing device 1 is used to obtain the pressure difference between the inside and outside of the cabin section 4 and send the pressure difference to the pressure regulating device 2. The pressure difference regulating device 2 is arranged inside the cabin section 4, the pressure difference regulating device 2 is connected to the pressure relief area regulating device 3, and the pressure difference regulating device 2 is used to move the pressure relief area regulating device 3 to the corresponding adjustment position according to the pressure difference, and change the pressure relief area of the pressure relief hole 41 of the cabin section 4 by the degree of orifice shielding of the pressure relief area regulating device 3 for the pressure relief hole 41, so as to change the pressure relief rate, so that the changed pressure difference is within the preset pressure difference threshold range. The pressure relief area regulating device 3 is arranged inside the cabin section 4. When the pressure relief area of the pressure relief hole 41 of the cabin section 4 is the maximum value, the entire pressure relief area regulating device 3 is located outside the pressure relief hole, and the orifice shielding degree is 0%; when the pressure relief area of the pressure relief hole 41 is between the maximum value and the minimum value, a part of the pressure relief area regulating device 3 is located at the pressure relief hole 41, the orifice shielding degree is greater than 0% and less than 90%; when the pressure relief area of the pressure relief hole 41 is the minimum value, the pressure relief hole 41 is shielded by the pressure relief area regulating device 3, and the orifice shielding degree is 90%.

[0027] Specifically, the specific value of the preset pressure difference threshold range is set according to the actual situation.

[0028] The pressure difference regulating device 2 can be realized by using existing devices that can directly move according to the pressure difference or can execute the movement instructions generated according to the pressure difference. For example: a pressure difference balancing device that can directly generate movement according to the pressure difference, or a servo motor that communicates with the existing control device, receives and executes the movement instructions sent by the control device according to the pressure difference. The pressure difference regulating device 2 generates a corresponding displacement according to the magnitude of the pressure difference between the inside and outside of the cabin section 4, thereby driving the pressure relief area regulating device 3 to displace, and then increasing or decreasing the pressure relief area of the pressure relief hole 41 to realize the regulation of the pressure relief rate.

[0029] Among them, the shape of the pressure relief area regulating device 3 is adapted to the shape of the pressure relief hole 41, and can realize the opening and closing of the pressure relief hole 41 and adjust the opening and closing degree of the pressure relief hole 41. The adaptive pressure relief device for the launch vehicle fairing of the present application can effectively confirm the pressure difference envelope range and can be suitable for fairings of different shapes and sizes and different remaining volume pressure relief requirements.

[0030] Further, the pressure difference bearing device 1 is connected to the inner wall surface of the cabin section 4 through at least one set of connecting pieces 5.

[0031] Further, the specific number of sets of the connecting member 5 is set according to the actual situation. Preferably in this application, there are two sets of the connecting member 5, namely: a first connecting member 51 and a second connecting member 52. One end of the pressure difference bearing device 1 is connected to the inner wall surface of the cabin section 4 through the first connecting member 51, and the other end of the pressure difference bearing device 1 is connected to the inner wall surface of the cabin section 4 through the second connecting member 52, and the pressure relief hole 41 of the cabin section 4 is located between the first connecting member 51 and the second connecting member 52.

[0032] Further, as Figure 2 and 3 shown, the first connecting member 51 includes: a first vertical plate, a first upper triangular connecting member, a first inclined plate, and a first lower triangular connecting member; wherein, one end of the first vertical plate is connected to the inner wall surface of the cabin section 4, and one side of the first upper triangular connecting member is connected to one side of the first vertical plate; one end of the first inclined plate is connected to the vertex corresponding to the side where the first upper triangular connecting member and one side of the first vertical plate are connected; the other end of the first inclined plate is connected to a vertex of the first lower triangular connecting member; the side corresponding to the vertex where the first lower triangular connecting member and the other end of the first inclined plate are connected is connected to one end of the pressure difference bearing device 1. The second connecting member 52 includes: a second vertical plate, a second upper triangular connecting member, a second inclined plate, and a second lower triangular connecting member; wherein, one end of the second vertical plate is connected to the inner wall surface of the cabin section 4, and one side of the second upper triangular connecting member is connected to one side of the second vertical plate; one end of the second inclined plate is connected to the vertex corresponding to the side where the second upper triangular connecting member and one side of the second vertical plate are connected; the other end of the second inclined plate is connected to a vertex of the second lower triangular connecting member; the side corresponding to the vertex where the second lower triangular connecting member and the other end of the second inclined plate are connected is connected to the other end of the pressure difference bearing device 1.

[0033] Specifically, one end of the first vertical plate is connected to the first upper triangular connecting member by bolts, and the other end of the first vertical plate is connected to the first lower triangular connecting member by bolts, but not limited to bolts, which is convenient for installation and disassembly and also convenient for adjusting the installation position of the pressure difference bearing device 1.

[0034] One end of the second vertical plate is connected to the second upper triangular connecting member by bolts, and the other end of the second vertical plate is connected to the second lower triangular connecting member by bolts, but not limited to bolts, which is convenient for installation and disassembly and also convenient for adjusting the installation position of the pressure difference bearing device 1.

[0035] Further, the first upper triangular connecting member includes: a first upper front triangular plate and a first upper rear triangular plate; one side of the first upper front triangular plate is connected to one side of the first vertical plate; one side of the first upper rear triangular plate is connected to one side of the first vertical plate; one end of the first inclined plate is located between the first upper front triangular plate and the first upper rear triangular plate, and is connected to the vertex corresponding to the side where the first upper front triangular plate is connected to one side of the first vertical plate, and the vertex corresponding to the side where the first upper rear triangular plate is connected to one side of the first vertical plate. The second upper triangular connecting member includes: a second upper front triangular plate and a second upper rear triangular plate; one side of the second upper front triangular plate is connected to one side of the second vertical plate; one side of the second upper rear triangular plate is connected to one side of the second vertical plate; one end of the second inclined plate is located between the second upper front triangular plate and the second upper rear triangular plate, and is connected to the vertex corresponding to the side where the second upper front triangular plate is connected to one side of the second vertical plate, and the vertex corresponding to the side where the second upper rear triangular plate is connected to one side of the second vertical plate.

[0036] Further, as Figure 3 shown, the first lower triangular connecting member includes: a first lower front triangular plate and a first lower rear triangular plate; the other end of the first inclined plate is located between the first lower front triangular plate and the first lower rear triangular plate, and is connected to a vertex of the first lower front triangular plate and a vertex of the first lower rear triangular plate; the side corresponding to the vertex where the first lower front triangular plate is connected to the other end of the first inclined plate is connected to one end of the pressure difference bearing device 1; the side corresponding to the vertex where the first lower rear triangular plate is connected to the other end of the first inclined plate is connected to one end of the pressure difference bearing device. The second lower triangular connecting member includes: a second lower front triangular plate and a second lower rear triangular plate; the other end of the second inclined plate is located between the second lower front triangular plate and the second lower rear triangular plate, and is connected to a vertex of the second lower front triangular plate and a vertex of the second lower rear triangular plate; the side corresponding to the vertex where the second lower front triangular plate is connected to the other end of the second inclined plate is connected to the other end of the pressure difference bearing device 1; the side corresponding to the vertex where the second lower rear triangular plate is connected to the other end of the second inclined plate is connected to the other end of the pressure difference bearing device 1.

[0037] Further, there is an inclination angle a between the first inclined plate and the plane where the pressure difference bearing device 1 is located, and the inclination angle a faces the side of the first lower triangular connecting member close to the pressure relief hole 41. There is an inclination angle b between the second inclined plate and the plane where the pressure difference bearing device 1 is located, and the inclination angle b faces the side of the second lower triangular connecting member close to the pressure relief hole.

[0038] Further, the value of the inclination angle a and the value of the inclination angle b can be unequal or equal. Preferably in this application: the inclination angle a = the inclination angle b.

[0039] Further, the differential pressure bearing device 1 is a differential pressure sensor. One detection port of the differential pressure sensor is connected to the inside of the cabin section 4, and the other detection port of the differential pressure sensor is connected to the outside of the cabin section 4. The differential pressure between the inside and the outside of the cabin section 4 is obtained by the differential pressure sensor and sent to the pressure regulating device 2.

[0040] Specifically, the differential pressure bearing device 1 is not limited to the differential pressure sensor, and can also be a device combining a piezoelectric type and a mechanical pressure sensor, which increases the pressure relief area when subjected to internal pressure and decreases the pressure relief area when subjected to external pressure. The specific differential pressure bearing device 1 can be realized by using existing equipment capable of obtaining the differential pressure between the inside and the outside of the cabin section 4.

[0041] Further, there are two differential pressure regulating devices 2, namely: the first differential pressure regulating device 21 and the second differential pressure regulating device 22. There are two pressure relief area regulating devices 3, namely: the first pressure relief area regulating device 31 and the second pressure relief area regulating device 32. One end of the first differential pressure regulating device 21 is connected to the inner wall surface of the cabin section 4, and the other end of the first differential pressure regulating device 21 is connected to the first pressure relief area regulating device 31, and one end of the first differential pressure regulating device 21 is located on the side of the first connecting member 51 away from the pressure relief hole 41. One end of the second differential pressure regulating device 22 is connected to the inner wall surface of the cabin section 4, and the other end of the second differential pressure regulating device 22 is connected to the second pressure relief area regulating device 32, and one end of the second differential pressure regulating device 22 is located on the side of the second connecting member 52 away from the pressure relief hole 41.

[0042] Further, one end of the first differential pressure regulating device 21 is connected to the inner wall surface of the cabin section 4 through the first cabin section connecting device 6; one end of the second differential pressure regulating device 22 is connected to the inner wall surface of the cabin section 4 through the second cabin section connecting device 7.

[0043] Specifically, the first cabin section connecting device 6 and the second cabin section connecting device 7 can be realized by using existing equipment capable of connecting two components.

[0044] Further, the first cabin section connecting device 6 is connected to the inner wall surface of the cabin section 4 by bolts, but is not limited to bolts.

[0045] Further, the second cabin section connecting device 7 is connected to the inner wall surface of the cabin section 4 by bolts, but is not limited to bolts.

[0046] The beneficial effects achieved by this application are as follows:

[0047] (1) The adaptive fairing pressure relief device of this application can effectively confirm the differential pressure envelope range and can meet the pressure relief requirements of fairings with different shapes and sizes and different remaining volumes.

[0048] (2) The pressure relief device for the adaptive fairing of the launch vehicle in this application can reduce the maximum pressure difference, lower the weight of the fairing, reduce the cost of the fairing, and improve the launch capacity under the condition of determining the size and shape of the fairing.

[0049] (3) The pressure relief device for the adaptive fairing of the launch vehicle in this application is a modular product, which can improve the production efficiency of the fairing design.

[0050] (4) The pressure relief device for the adaptive fairing of the launch vehicle in this application has a simple structure, a light structural weight, and can ensure that the structural strength meets the requirements.

[0051] (5) The pressure relief device for the adaptive fairing of the launch vehicle in this application has a high sensitivity and can quickly adjust the size of the pressure relief area according to the real-time change of the pressure difference during the flight.

[0052] Although the preferred embodiments of this application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the protection scope of this application is intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of this application. Obviously, those skilled in the art can make various changes and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the protection of this application and its equivalent technologies, this application also intends to include these modifications and variations.

Claims

1. An adaptive pressure relief device for the fairing of a launch vehicle, characterized in that Comprising: A differential pressure bearing device, at least one differential pressure regulating device, and at least one pressure relief area regulating device; Wherein, the differential pressure bearing device is arranged inside the cabin section, the differential pressure bearing device is connected to the differential pressure regulating device, and the differential pressure bearing device: is used to obtain the differential pressure between inside and outside the cabin section and send the differential pressure to the pressure regulating device; The differential pressure regulating device is arranged inside the cabin section, the differential pressure regulating device is connected to the pressure relief area regulating device, and the differential pressure regulating device: is used to move the pressure relief area regulating device to the corresponding adjustment position according to the differential pressure, and change the pressure relief area of the pressure relief hole of the cabin section by the degree of orifice shielding of the pressure relief area regulating device for the pressure relief hole, so as to change the pressure relief rate, such that the changed differential pressure is within the preset differential pressure threshold range; The pressure relief area regulating device is arranged inside the cabin section. When the pressure relief area of the pressure relief hole of the cabin section is at the maximum value, the entire pressure relief area regulating device is located outside the pressure relief hole, and the orifice shielding degree is 0%; when the pressure relief area of the pressure relief hole is between the maximum value and the minimum value, a part of the pressure relief area regulating device is located at the pressure relief hole, and the orifice shielding degree is greater than 0% and less than 90%; when the pressure relief area of the pressure relief hole is at the minimum value, the pressure relief hole is shielded by the pressure relief area regulating device, and the orifice shielding degree is 90%.

2. The adaptive fairing pressure relief device for a launch vehicle according to claim 1, wherein The differential pressure bearing device is connected to the inner wall surface of the cabin section through at least one set of connecting members.

3. The adaptive fairing pressure relief device for a launch vehicle according to claim 2, wherein, There are two sets of connecting members, namely: the first connecting member and the second connecting member; One end of the differential pressure bearing device is connected to the inner wall surface of the cabin section through the first connecting member, the other end of the differential pressure bearing device is connected to the inner wall surface of the cabin section through the second connecting member, and the pressure relief hole of the cabin section is located between the first connecting member and the second connecting member.

4. The adaptive fairing pressure relief device for a launch vehicle according to claim 3, characterized in that, The first connecting member includes: a first vertical plate, a first upper triangular connecting member, a first inclined plate, and a first lower triangular connecting member; wherein, one end of the first vertical plate is connected to the inner wall surface of the cabin section, and one side of the first upper triangular connecting member is connected to one side of the first vertical plate; one end of the first inclined plate is connected to the vertex corresponding to the side where the first upper triangular connecting member and one side of the first vertical plate are connected; the other end of the first inclined plate is connected to a vertex of the first lower triangular connecting member; the side corresponding to the vertex where the first lower triangular connecting member and the other end of the first inclined plate are connected is connected to one end of the differential pressure bearing device; The second connecting member includes: a second vertical plate, a second upper triangular connecting member, a second inclined plate, and a second lower triangular connecting member; wherein, one end of the second vertical plate is connected to the inner wall surface of the cabin section, and one side of the second upper triangular connecting member is connected to one side of the second vertical plate; one end of the second inclined plate is connected to the vertex corresponding to the side where the second upper triangular connecting member and one side of the second vertical plate are connected; the other end of the second inclined plate is connected to a vertex of the second lower triangular connecting member; the side corresponding to the vertex where the second lower triangular connecting member and the other end of the second inclined plate are connected is connected to the other end of the differential pressure bearing device.

5. The adaptive fairing pressure relief device for a launch vehicle according to claim 4, characterized in that, The first upper triangular connecting piece includes: a first upper front triangular plate and a first upper rear triangular plate; one side of the first upper front triangular plate is connected to one side of the first vertical plate; one side of the first upper rear triangular plate is connected to one side of the first vertical plate; one end of the first inclined plate is located between the first upper front triangular plate and the first upper rear triangular plate, and is connected to the vertex corresponding to the side where the first upper front triangular plate is connected to one side of the first vertical plate and the vertex corresponding to the side where the first upper rear triangular plate is connected to one side of the first vertical plate; The second upper triangular connecting piece includes: a second upper front triangular plate and a second upper rear triangular plate; one side of the second upper front triangular plate is connected to one side of the second vertical plate; one side of the second upper rear triangular plate is connected to one side of the second vertical plate; one end of the second inclined plate is located between the second upper front triangular plate and the second upper rear triangular plate, and is connected to the vertex corresponding to the side where the second upper front triangular plate is connected to one side of the second vertical plate and the vertex corresponding to the side where the second upper rear triangular plate is connected to one side of the second vertical plate.

6. The adaptive fairing pressure relief device for a launch vehicle according to claim 5, characterized in that The first lower triangular connecting piece includes: a first lower front triangular plate and a first lower rear triangular plate; the other end of the first inclined plate is located between the first lower front triangular plate and the first lower rear triangular plate, and is connected to a vertex of the first lower front triangular plate and a vertex of the first lower rear triangular plate; the side corresponding to the vertex where the first lower front triangular plate is connected to the other end of the first inclined plate is connected to one end of the differential pressure bearing device; the side corresponding to the vertex where the first lower rear triangular plate is connected to the other end of the first inclined plate is connected to one end of the differential pressure bearing device; The second lower triangular connecting piece includes: a second lower front triangular plate and a second lower rear triangular plate; the other end of the second inclined plate is located between the second lower front triangular plate and the second lower rear triangular plate, and is connected to a vertex of the second lower front triangular plate and a vertex of the second lower rear triangular plate; the side corresponding to the vertex where the second lower front triangular plate is connected to the other end of the second inclined plate is connected to the other end of the differential pressure bearing device; the side corresponding to the vertex where the second lower rear triangular plate is connected to the other end of the second inclined plate is connected to the other end of the differential pressure bearing device.

7. The adaptive fairing pressure relief device for a launch vehicle according to claim 4, characterized in that, There is an inclination angle a between the first inclined plate and the plane where the differential pressure bearing device is located, and the inclination angle a faces the side of the first lower triangular connecting piece close to the pressure relief hole; There is an inclination angle b between the second inclined plate and the plane where the differential pressure bearing device is located, and the inclination angle b faces the side of the second lower triangular connecting piece close to the pressure relief hole.

8. The adaptive fairing pressure relief device for a launch vehicle according to claim 1 or 6, characterized in that, The differential pressure bearing device is a differential pressure sensor. One detection port of the differential pressure sensor is connected to the inside of the cabin section, and the other detection port of the differential pressure sensor is connected to the outside of the cabin section. The differential pressure between the inside and the outside of the cabin section is obtained through the differential pressure sensor and sent to the pressure regulating device.

9. The adaptive fairing pressure relief device for a launch vehicle according to claim 1, wherein There are two differential pressure regulating devices, namely: a first differential pressure regulating device and a second differential pressure regulating device; There are two pressure relief area regulating devices, namely: a first pressure relief area regulating device and a second pressure relief area regulating device; One end of the first differential pressure regulating device is connected to the inner wall surface of the cabin section, the other end of the first differential pressure regulating device is connected to the first pressure relief area regulating device, and one end of the first differential pressure regulating device is located on the side of the first connecting piece away from the pressure relief hole; One end of the second differential pressure regulating device is connected to the inner wall surface of the cabin section, and the other end of the second differential pressure regulating device is connected to the second pressure relief area regulating device, and one end of the second differential pressure regulating device is located on the side of the second connecting member away from the pressure relief hole.

10. The adaptive fairing pressure relief device for a launch vehicle according to claim 9, wherein One end of the first differential pressure regulating device is connected to the inner wall surface of the cabin section through the first cabin section connecting device; One end of the second differential pressure regulating device is connected to the inner wall surface of the cabin section through the second cabin section connecting device.

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