Modularized hybrid power rocket propulsion system

Abstract

The invention relates to the technical field of rocket propulsion systems, in particular to a modular hybrid power rocket propulsion system which comprises a combustion treatment structure and a jet communication structure, and the lower end of the combustion treatment structure communicates with the jet communication structure; the combustion treatment structure is used for fuel mixing work, a liquefied fuel pipe and an oxidizing agent guide pipe are communicated with a primary mixing chamber, the mixing chamber is communicated with a solid fuel guide and discharge pipe and a pressurizing seat, fuel matching is carried out, and combustion treatment is carried out through an ignition combustion seat; the injection communication structure is used for combustion regulation and control, the compressed oxygen pipe, the first metal pipe, the second metal pipe and the communication spray pipe are communicated and liquid oxygen is guided in, the lower end of the butt joint combustion pipe is communicated with the regulation and control component, and a first regulation and control mechanism and a second regulation and control mechanism in the regulation and control component can be turned over to adjust and control the size of a nozzle; and the lower end of the butt-joint pipe is communicated with a solid fuel guide and discharge pipe. And through the arrangement of the structure, rocket propulsion work is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of rocket propulsion systems, and in particular to a modular hybrid power rocket propulsion system. Background Art

[0002] The modular hybrid rocket propulsion system is an advanced propulsion system that combines modular design with hybrid technology. It aims to improve the flexibility, reliability and economy of the rocket and meet the needs of diverse space missions.

[0003] The modular hybrid rocket propulsion system mainly consists of the following modules:

[0004] Liquid propulsion modules utilize liquid propellants (such as liquid oxygen / kerosene or liquid hydrogen / liquid oxygen), generating high-temperature, high-pressure gases through combustion to provide primary thrust. These modules offer advantages such as high specific impulse, adjustable thrust, and the ability to be started multiple times, making them suitable for long-duration, high-precision orbit adjustments and deep space exploration missions.

[0005] Solid propulsion module: uses solid propellant, burns quickly and has high thrust, and is suitable as a booster or for missions with short-term high thrust requirements. The solid propulsion module has a simple structure, high reliability, and short preparation time, but its thrust adjustment capability is limited.

[0006] Hybrid propulsion modules: These combine the advantages of liquid and solid propellants to achieve higher performance through optimized design, for example, a solid-fuel core stage with a liquid-fuel upper stage, or a liquid-fuel main engine with a solid-fuel locomotive engine.

[0007] Modular interface and control unit: Each module is connected through a standardized interface to achieve rapid replacement and combination. The control unit is responsible for coordinating the work of each module, optimizing propulsion efficiency, and ensuring the efficiency and safety of mission execution.

[0008] At present, the existing modular hybrid rocket propulsion system is not convenient for active nozzle adjustment during use and cannot change the propulsion pressure. Therefore, improvements are made to address the above problems. Summary of the Invention

[0009] In response to the problems in the prior art, the present invention provides a modular hybrid rocket propulsion system.

[0010] The technical solution adopted by the present invention to solve the technical problem is: a modular hybrid rocket propulsion system, including a combustion processing structure and an injection communication structure, wherein the lower end of the combustion processing structure is connected to the injection communication structure;

[0011] The combustion processing structure is used for fuel mixing. The liquefied fuel pipe and the oxidant guide pipe are connected to the primary mixing chamber, and the mixing chamber is connected to the solid fuel guide pipe and the pressurizing seat to perform fuel mixing and combustion processing through the ignition combustion seat;

[0012] The injection connecting structure is used for combustion control. The compressed oxygen pipe, the first metal pipe, the second metal pipe, and the connecting nozzle are connected to introduce liquid oxygen, and the lower end of the docking combustion pipe is connected to the control component. The first control mechanism and the second control mechanism in the control component can be flipped and adjusted to control the size of the nozzle.

[0013] Specifically, the combustion processing structure includes a butt joint tube, the lower end of which is connected to a solid fuel guide pipe, the lower end of which is connected to a mixing chamber, a pressurizing seat is installed at the side end of the mixing chamber, and the mixing chamber and the pressurizing seat are connected in one direction, a primary mixing chamber is connected to the pressurizing seat, and a liquefied fuel pipe and an oxidant guide pipe are connected to the primary mixing chamber.

[0014] Specifically, the liquefied fuel pipe is arranged in an inclined shape, the liquefied fuel pipe and the oxidant guide pipe are connected to the pressurizing seat through the primary mixing chamber, the pressurizing seat is connected to the mixing chamber, and the lower end of the mixing chamber is connected to the ignition combustion seat.

[0015] Specifically, the injection connecting structure includes a compressed oxygen pipe, a first metal pipe, a second metal pipe, a connecting nozzle, a protective cover, a protective cover and a docking combustion pipe. The lower end of the compressed oxygen pipe is connected to the first metal pipe, the lower end of the first metal pipe is connected to the second metal pipe, the lower end of the second metal pipe is connected to the connecting nozzle, the lower end of the connecting nozzle is connected to the protective cover, and a protective cover is fixedly sleeved on the outside of the protective cover.

[0016] Specifically, a docking combustion pipe is provided at the central upper end of the protective cover, and the upper end of the docking combustion pipe is connected to the ignition combustion seat. A regulating component is provided in the protective cover. The structural setting of the combustion processing structure facilitates the combustion processing work. The solid fuel guide pipe can introduce solid fuel, the liquefied fuel pipe introduces liquid fuel, and the oxidant guide pipe introduces oxidant. The combustion processing structure and the oxidant are mixed in the primary mixing chamber, and then pressurized and guided by the pressurizing seat to the mixing chamber, mixed with the solid fuel in the mixing chamber, and then guided to the ignition combustion seat for combustion processing through the ignition combustion seat. The lower end of the ignition combustion seat is connected to the regulating component through the docking combustion pipe for spray pressure processing to provide operating power.

[0017] Specifically, the regulating component includes a sealing ring, an insulation tube, a first regulating mechanism and a second regulating mechanism. The lower end of the sealing ring is fixedly connected to the insulation tube. The lower end of the insulation tube is provided with a first regulating mechanism and a second regulating mechanism. The first regulating mechanism and the second regulating mechanism are rotated and adjusted on the insulation tube. Liquid fuel is introduced through the liquefied fuel pipe, and oxidant is introduced through the oxidant guide pipe. Mixing is performed in the primary mixing chamber, and then under the pressure of the pressurizing seat, it is discharged into the mixing chamber. At this time, the solid fuel guide pipe can introduce solid fuel, mix the solid fuel and liquid fuel in the mixing chamber, and then guide it to the ignition combustion seat for combustion reaction to provide reaction power. The compressed oxygen pipe is connected to the connecting nozzle through the first metal pipe and the second metal pipe. The lower end of the connecting nozzle is connected to the center of the sealing ring, and can introduce liquid oxygen to improve the reaction effect, perform secondary combustion in the insulation tube, and intensify the combustion effect.

[0018] Specifically, the first regulating mechanism and the second regulating mechanism have the same structure, and the first regulating mechanism includes a first hinge shaft, a fixed rod, a matching guide rod, a matching hinge seat, an electric-controlled hydraulic rod, an adapting hinge rod, a mounting guide block, an adjusting rotating plate and a second hinge shaft, a side end of the first hinge shaft is hingedly arranged with the adjusting rotating plate, a side end of the adjusting rotating plate is hingedly arranged with the second hinge shaft, a front end of the adjusting rotating plate is fixedly connected with a mounting guide block, an adapting hinge rod is fixedly connected to the mounting guide block, an electric-controlled hydraulic rod is hingedly arranged on the adapting hinge rod, an upper end of the electric-controlled hydraulic rod is fixedly connected with the matching hinge seat, and a There is a matching guide rod, and the side end of the matching guide rod is fixedly connected with a fixed rod. The structural setting of the injection connecting structure facilitates the control work. The compressed oxygen pipe, the first metal pipe, and the second metal pipe are connected to the connecting nozzle. The lower end of the connecting nozzle is connected to the control component to enhance the combustion effect. The first control mechanism and the second control mechanism are arranged on the insulation tube and can be rotated and adjusted to change the range of the spray angle during injection. The electric-controlled hydraulic rod pushes the adjustment rotating plate to move by extension and contraction, so that the adjustment rotating plate is adjusted at the bottom of the insulation tube through the first hinge shaft and the second hinge shaft to control the size of the nozzle.

[0019] Specifically, the fixed rod is fixed in the protective cover, and the first hinge shaft, the second hinge shaft and the insulation tube are set through, the first hinge shaft and the second hinge shaft are also fixedly connected to the protective cover, the user can adjust the size of the nozzle, thereby controlling the injection pressure, the fixed rod and the matching guide rod are fixed to support the matching hinge seat, the electric-controlled hydraulic rod changes the position of the adaptive hinge rod through telescopic adjustment, the adaptive hinge rod is fixed to the adjustment rotating plate through the installation guide block, under the control of the electric-controlled hydraulic rod, the adjustment rotating plate is pushed to move, and the upper end of the adjustment rotating plate is limited by the first hinge shaft and the second hinge shaft. At this time, the adjustment rotating plate can be rotated by the first hinge shaft and the second hinge shaft, thereby controlling the rotation and adjustment of the adjustment rotating plate at the lower end of the insulation tube, changing the nozzle size at the lower end of the insulation tube, thereby controlling the injection effect.

[0020] Specifically, the adjusting rotating plate is arranged inside the insulation tube, and a movable gap is provided between the insulation tube and the adjusting rotating plate. The upper end of the ignition combustion seat is fixed to the connecting nozzle and the docking combustion tube, and the connecting nozzle and the docking combustion tube are connected to the ignition combustion seat.

[0021] Specifically, the upper end of the docking combustion tube is communicated with the ignition combustion seat, and the protective cover is arranged in a conical structure, and the protective cover is used for reinforcing and protecting the protective cover.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention facilitates combustion processing work through the structural setting of the combustion processing structure. The solid fuel guide pipe can introduce solid fuel, the liquefied fuel pipe introduces liquid fuel, and the oxidant guide pipe introduces oxidant. The combustion processing structure and the oxidant are mixed in the primary mixing chamber, and then pressurized and guided through the pressurizing seat to the mixing chamber, mixed with the solid fuel in the mixing chamber, and then guided to the ignition combustion seat for combustion processing. The lower end of the ignition combustion seat is connected to the regulating component through the docking combustion pipe for spray pressure processing to provide operating power.

[0024] Second, the present invention facilitates control work through the structural setting of the injection connecting structure. The compressed oxygen pipe, the first metal pipe, and the second metal pipe are connected to the connecting nozzle, and the lower end of the connecting nozzle is connected to the control component to enhance the combustion effect. The first control mechanism and the second control mechanism are arranged on the insulation tube and can be rotated and adjusted to change the range of the spray angle during injection. The electric-controlled hydraulic rod pushes the adjustment rotating plate to move by extension and contraction, so that the adjustment rotating plate is adjusted at the bottom of the insulation tube through the first hinge shaft and the second hinge shaft to control the size of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0027] Figure 2 This is a split diagram of the main body of the present invention;

[0028] Figure 3 A perspective view of the combustion treatment structure of the present invention;

[0029] Figure 4 This is an exploded view of the combustion treatment structure of the present invention;

[0030] Figure 5 A perspective view of the injection communication structure of the present invention;

[0031] Figure 6This is an exploded view of the injection communication structure of the present invention;

[0032] Figure 7 It is a three-dimensional structural diagram of the control component in the present invention;

[0033] Figure 8 It is a three-dimensional structural diagram of the first regulating mechanism in the present invention.

[0034] In the figure: 1-combustion processing structure, 2-injection connecting structure, 3-liquefied fuel pipe, 4-oxidizer guide pipe, 5-solid fuel guide pipe, 6-mixing chamber, 7-pressurization seat, 8-primary mixing chamber, 9-butting pipe, 10-ignition combustion seat, 11-compressed oxygen pipe, 12-first metal pipe, 13-second metal pipe, 14-connecting nozzle, 15-protective cover, 16-protective cover, 17-butting combustion pipe, 18-regulating component, 19-sealing ring, 20-insulating pipe, 21-first regulating mechanism, 22-second regulating mechanism, 23-first hinge shaft, 24-fixing rod, 25-matching guide rod, 26-matching hinge seat, 27-electrically controlled hydraulic rod, 28-adapting hinge rod, 29-installing guide block, 30-adjusting rotating plate, 31-second hinge shaft. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the present invention, 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 only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Example

[0038] like Figure 1-8 As shown, a modular hybrid rocket propulsion system of the present invention includes a combustion processing structure 1 and an injection communication structure 2. The lower end of the combustion processing structure 1 is connected to the injection communication structure 2;

[0039] The combustion processing structure 1 is used for fuel mixing. The liquefied fuel pipe 3 and the oxidant guide pipe 4 are connected to the primary mixing chamber 8, and the mixing chamber 6 is connected to the solid fuel guide pipe 5 and the pressurizing seat 7 to perform fuel mixing and combustion processing through the ignition combustion seat 10;

[0040] The injection connecting structure 2 is used for combustion control. The compressed oxygen pipe 11, the first metal pipe 12, the second metal pipe 13, and the connecting nozzle 14 are connected to introduce liquid oxygen, and the lower end of the docking combustion pipe 17 is connected to the control component 18. The first control mechanism 21 and the second control mechanism 22 in the control component 18 can be flipped and adjusted to control the size of the nozzle.

[0041] The combustion processing structure 1 includes a docking tube 9, the lower end of which is connected to a solid fuel discharge pipe 5, the lower end of which is connected to a mixing chamber 6, a pressurizing seat 7 is installed at the side end of the mixing chamber 6, and the mixing chamber 6 and the pressurizing seat 7 are connected in one direction, a primary mixing chamber 8 is connected to the pressurizing seat 7, and a liquefied fuel pipe 3 and an oxidant guide pipe 4 are connected to the primary mixing chamber 8.

[0042] The liquefied fuel pipe 3 is arranged in an inclined shape. The liquefied fuel pipe 3 and the oxidant guide pipe 4 are connected to the pressurizing seat 7 through the primary mixing chamber 8. The pressurizing seat 7 is connected to the mixing chamber 6. The lower end of the mixing chamber 6 is connected to the ignition combustion seat 10. The liquid fuel is introduced through the liquefied fuel pipe 3, and the oxidant is introduced through the oxidant guide pipe 4. The mixing work is carried out in the primary mixing chamber 8. Then, under the pressure of the pressurizing seat 7, it is discharged into the mixing chamber 6. At this time, the solid fuel guide pipe 5 can introduce solid fuel, mix the solid fuel and liquid fuel in the mixing chamber 6, and then guide it to the ignition combustion seat 10 for combustion reaction to provide reaction power.

[0043] The injection connecting structure 2 includes a compressed oxygen pipe 11, a first metal pipe 12, a second metal pipe 13, a connecting nozzle 14, a protective cover 15, a protective cover 16 and a docking combustion pipe 17. The lower end of the compressed oxygen pipe 11 is connected to the first metal pipe 12, the lower end of the first metal pipe 12 is connected to the second metal pipe 13, the lower end of the second metal pipe 13 is connected to the connecting nozzle 14, the lower end of the connecting nozzle 14 is connected to the protective cover 15, and the protective cover 16 is fixedly sleeved on the outside of the protective cover 15.

[0044] The central upper end of the protective cover 16 is connected to a docking combustion tube 17, and the upper end of the docking combustion tube 17 is connected to the ignition combustion seat 10. A regulating component 18 is provided in the protective cover 15. The structural setting of the combustion processing structure 1 facilitates the combustion processing work. The solid fuel guide pipe 5 can introduce solid fuel, the liquefied fuel pipe 3 introduces liquid fuel, and the oxidant guide pipe 4 introduces oxidant. The combustion processing structure and the oxidant are mixed in the primary mixing chamber 8, and then pressurized and guided by the pressurizing seat 7, and guided into the mixing chamber 6, mixed with the solid fuel in the mixing chamber 6, and then guided into the ignition combustion seat 10, and combustion treatment is carried out through the ignition combustion seat 10. The lower end of the ignition combustion seat 10 is connected to the regulating component 18 through the docking combustion tube 17 for spray pressure treatment to provide operating power.

[0045] The regulating component 18 includes a sealing ring 19, an insulating tube 20, a first regulating mechanism 21 and a second regulating mechanism 22. The lower end of the sealing ring 19 is fixedly connected to the insulating tube 20. The lower end of the insulating tube 20 is provided with a first regulating mechanism 21 and a second regulating mechanism 22. The first regulating mechanism 21 and the second regulating mechanism 22 are rotated and adjusted on the insulating tube 20. The compressed oxygen pipe 11 is connected to the connecting nozzle 14 through the first metal tube 12 and the second metal tube 13. The lower end of the connecting nozzle 14 is connected to the center of the sealing ring 19, which can introduce liquid oxygen, improve the reaction effect, and carry out secondary combustion in the insulating tube 20 to intensify the combustion effect.

[0046] The first regulating mechanism 21 and the second regulating mechanism 22 have the same structure. The first regulating mechanism 21 includes a first hinge shaft 23, a fixed rod 24, a matching guide rod 25, a matching hinge seat 26, an electric-controlled hydraulic rod 27, an adapting hinge rod 28, a mounting guide block 29, an adjusting rotating plate 30 and a second hinge shaft 31. The nozzle size can be adjusted to control the injection pressure. The fixed rod 24 and the matching guide rod 25 are fixed to support the matching hinge seat 26. The electric-controlled hydraulic rod 27 changes the position of the adapting hinge rod 28 by telescopic adjustment. The hinge rod 28 is fixed to the adjusting rotating plate 30 through the installation guide block 29. Under the control of the electric control hydraulic rod 27, the adjusting rotating plate 30 is pushed to move. The upper end of the adjusting rotating plate 30 is limited by the first hinge shaft 23 and the second hinge shaft 31. At this time, the adjusting rotating plate 30 can be rotated by the first hinge shaft 23 and the second hinge shaft 31, thereby controlling the adjusting rotating plate 30 to rotate and adjust at the lower end of the insulation tube 20, changing the size of the nozzle at the lower end of the insulation tube 20, thereby controlling the injection effect. The side end of the first hinge shaft 23 is connected to the adjusting rotating plate 30. The hinged setting is used to adjust the side end of the rotating plate 30 and the second hinge shaft 31. The front end of the rotating plate 30 is fixedly connected to the installation guide block 29. The installation guide block 29 is fixedly connected to the adapting hinge rod 28. The adapting hinge rod 28 is hinged with an electric-controlled hydraulic rod 27. The upper end of the electric-controlled hydraulic rod 27 is fixedly connected to the matching hinge seat 26. The matching hinge seat 26 is hinged with a matching guide rod 25. The side end of the matching guide rod 25 is fixedly connected with a fixed rod 24. The structural setting of the injection connecting structure 2 facilitates the adjustment work and the compression The oxygen tube 11, the first metal tube 12, and the second metal tube 13 are connected to the connecting nozzle 14. The lower end of the connecting nozzle 14 is connected to the regulating component 18 to enhance the combustion effect. The first regulating mechanism 21 and the second regulating mechanism 22 are arranged on the insulation tube 20 and can be rotated and adjusted to change the range of the spray angle during injection. The electric-controlled hydraulic rod 27 pushes the regulating rotating plate 30 to move by extending and retracting, so that the regulating rotating plate 30 is adjusted at the bottom of the insulation tube 20 through the first hinge shaft 23 and the second hinge shaft 31 to control the size of the nozzle.

[0047] The fixing rod 24 is fixed in the protective cover 15 , and the first hinge shaft 23 , the second hinge shaft 31 and the heat insulation pipe 20 are provided through-connected. The first hinge shaft 23 and the second hinge shaft 31 are also fixedly connected to the protective cover 15 .

[0048] The adjusting rotating plate 30 is arranged inside the insulation tube 20, and a movable gap is provided between the insulation tube 20 and the adjusting rotating plate 30. The upper end of the ignition combustion seat 10 is fixed to the connecting nozzle 14 and the docking combustion tube 17, and the connecting nozzle 14 and the docking combustion tube 17 are connected to the ignition combustion seat 10.

[0049] The upper end of the docking combustion tube 17 is communicated with the ignition combustion seat 10 . The protective cover 15 is arranged in a conical structure. The protective cover 16 is used to reinforce and protect the protective cover 15 .

[0050] The working principle is as follows: during use, liquid fuel is introduced through the liquefied fuel pipe 3, and oxidant is introduced through the oxidant guide pipe 4. Mixing is carried out in the primary mixing chamber 8, and then, under the pressure of the pressurizing seat 7, the oxidant is discharged into the mixing chamber 6. At this time, the solid fuel guide pipe 5 can introduce solid fuel, and the solid fuel and liquid fuel are mixed in the mixing chamber 6. After that, the solid fuel is guided to the ignition combustion seat 10 for combustion reaction, providing reaction power.

[0051] The compressed oxygen pipe 11 is connected to the connecting nozzle 14 through the first metal pipe 12 and the second metal pipe 13. The lower end of the connecting nozzle 14 is connected to the center of the sealing ring 19, which can introduce liquid oxygen to improve the reaction effect and perform secondary combustion in the insulation pipe 20 to intensify the combustion effect.

[0052] The user can adjust the size of the nozzle to control the injection pressure. The fixed rod 24 and the matching guide rod 25 are fixed to support the matching hinge seat 26. The electric-controlled hydraulic rod 27 changes the position of the adaptive hinge rod 28 through telescopic adjustment. The adaptive hinge rod 28 is fixed to the adjustment rotating plate 30 through the installation guide block 29. Under the control of the electric-controlled hydraulic rod 27, the adjustment rotating plate 30 is pushed to move. The upper end of the adjustment rotating plate 30 is limited by the first hinge shaft 23 and the second hinge shaft 31. At this time, the adjustment rotating plate 30 can be rotated by the first hinge shaft 23 and the second hinge shaft 31, thereby controlling the rotation and adjustment of the adjustment rotating plate 30 at the lower end of the insulation tube 20 to change the nozzle size at the lower end of the insulation tube 20, thereby controlling the injection effect and completing the work.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A modular hybrid rocket propulsion system, characterized by: It comprises a combustion processing structure (1) and an injection communication structure (2), wherein the lower end of the combustion processing structure (1) is connected to the injection communication structure (2); The combustion processing structure (1) is used for fuel mixing. The liquefied fuel pipe (3) and the oxidant guide pipe (4) are connected to the primary mixing chamber (8), and the mixing chamber (6) is connected to the solid fuel guide pipe (5) and the pressurizing seat (7) to perform fuel mixing and combustion processing through the ignition combustion seat (10); The injection connection structure (2) is used for combustion control. The compressed oxygen pipe (11), the first metal pipe (12), the second metal pipe (13), and the connecting nozzle (14) are connected to introduce liquid oxygen. The lower end of the combustion pipe (17) is connected to the control component (18). The first control mechanism (21) and the second control mechanism (22) in the control component (18) can be turned over and adjusted to control the size of the nozzle.

2. A modular hybrid rocket propulsion system according to claim 1, characterized in that: The combustion processing structure (1) comprises a butt joint pipe (9), the lower end of the butt joint pipe (9) is connected to a solid fuel guide pipe (5), the lower end of the solid fuel guide pipe (5) is connected to a mixing chamber (6), a pressurizing seat (7) is installed at the side end of the mixing chamber (6), and the mixing chamber (6) and the pressurizing seat (7) are connected in one direction, a primary mixing chamber (8) is connected to the pressurizing seat (7), and a liquefied fuel pipe (3) and an oxidant guide pipe (4) are connected to the primary mixing chamber (8).

3. A modular hybrid rocket propulsion system according to claim 2, characterized in that: The liquefied fuel pipe (3) is arranged in an inclined shape. The liquefied fuel pipe (3) and the oxidant guide pipe (4) are connected to the pressurizing seat (7) through the primary mixing chamber (8). The pressurizing seat (7) is connected to the mixing chamber (6). The lower end of the mixing chamber (6) is connected to the ignition combustion seat (10).

4. A modular hybrid rocket propulsion system according to claim 3, characterized in that: The injection connection structure (2) comprises a compressed oxygen pipe (11), a first metal pipe (12), a second metal pipe (13), a connecting nozzle (14), a protective cover (15), a protective cover (16) and a docking combustion pipe (17). The lower end of the compressed oxygen pipe (11) is connected to the first metal pipe (12), the lower end of the first metal pipe (12) is connected to the second metal pipe (13), the lower end of the second metal pipe (13) is connected to the connecting nozzle (14), the lower end of the connecting nozzle (14) is connected to the protective cover (15), and the protective cover (16) is fixedly sleeved on the outer side of the protective cover (15).

5. A modular hybrid rocket propulsion system according to claim 4, characterized in that: The central upper end of the protective cover (16) is connected to a docking combustion tube (17), the upper end of the docking combustion tube (17) is connected to the ignition combustion seat (10), and a regulating component (18) is provided in the protective cover (15).

6. A modular hybrid rocket propulsion system according to claim 5, characterized in that: The regulating component (18) comprises a sealing ring (19), a heat-insulating tube (20), a first regulating mechanism (21) and a second regulating mechanism (22); the lower end of the sealing ring (19) is fixedly connected to the heat-insulating tube (20); the lower end of the heat-insulating tube (20) is provided with the first regulating mechanism (21) and the second regulating mechanism (22); the first regulating mechanism (21) and the second regulating mechanism (22) are rotatably regulated on the heat-insulating tube (20).

7. A modular hybrid rocket propulsion system according to claim 6, characterized in that: The first regulating mechanism (21) and the second regulating mechanism (22) have the same structure. The first regulating mechanism (21) comprises a first hinge shaft (23), a fixed rod (24), a matching guide rod (25), a matching hinge seat (26), an electric-controlled hydraulic rod (27), an adapting hinge rod (28), a mounting guide block (29), an adjusting rotating plate (30) and a second hinge shaft (31). The side end of the first hinge shaft (23) is hingedly connected to the adjusting rotating plate (30). The adjusting rotating plate (30) The side end of the adjusting rotating plate (30) is hingedly connected to the second hinge shaft (31), the front end of the adjusting rotating plate (30) is fixedly connected to a mounting guide block (29), the mounting guide block (29) is fixedly connected to an adapting hinge rod (28), the adapting hinge rod (28) is hingedly provided with an electric control hydraulic rod (27), the upper end of the electric control hydraulic rod (27) is fixedly connected to a matching hinge seat (26), the matching hinge seat (26) is hingedly provided with a matching guide rod (25), and the side end of the matching guide rod (25) is fixedly connected to a fixed rod (24).

8. The modular hybrid rocket propulsion system according to claim 7, characterized in that: The fixing rod (24) is fixed in the protective cover (15), and the first hinge shaft (23), the second hinge shaft (31) and the heat insulation pipe (20) are arranged to pass through, and the first hinge shaft (23) and the second hinge shaft (31) are also fixedly connected to the protective cover (15).

9. The modular hybrid rocket propulsion system according to claim 8, characterized in that: The regulating rotating plate (30) is arranged inside the heat-insulating tube (20), and a movable gap is provided between the heat-insulating tube (20) and the regulating rotating plate (30). The upper end of the ignition combustion seat (10) is fixed to the connecting nozzle (14) and the docking combustion tube (17), and the connecting nozzle (14) and the docking combustion tube (17) are connected to the ignition combustion seat (10).

10. A modular hybrid rocket propulsion system according to claim 9, characterized in that: The upper end of the docking combustion tube (17) is communicated with the ignition combustion seat (10), the protective cover (15) is arranged in a conical structure, and the protective cover (16) is used for reinforcing and protecting the protective cover (15).

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