Recyclable rocket and stage separation guiding pneumatic push rod thereof
By introducing exhaust pipes and guide pins into the guide aerodynamic pushrods between the rocket stages, the hidden dangers of gas retention for recyclable substages are solved, rapid separation and attitude stability are achieved, and the payload of the rocket is improved.
Patent Information
- Application Number
- CN202411885185.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-02-11
AI Technical Summary
In the process of rocket stage separation, the internal gas retention after the aerodynamic pusher is pushed out causes the safety and reuse of recyclable sub-stages, and increases the weight of the rocket structure and reduces the payload.
A recyclable rocket interstage separation guide pneumatic push rod is designed, and the exhaust pipe is used to quickly discharge the gas in the pneumatic push rod and its inflation system. The guide and stabilize the sub-stage attitude through the coordination of the guide pin and the inner cylinder. .
It realizes rapid gas discharge, improves the separation speed and kinetic energy of the two substages of the rocket, ensures the safety and reuse of the recyclable substages, and increases the rocket's payload.
Smart Images
Figure CN119413019A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of aerospace technology, and in particular to a recoverable rocket and an interstage separation guide pneumatic push rod thereof. Background Art
[0002] The pneumatic push rod is an important device in the separation of rocket stages. The device is located on both sides of the rocket separation surface. Before separation, compressed gas is filled into the pneumatic push rod. During separation, the rocket separation surface is unlocked and separated. Under the action of compressed gas, the pneumatic push rod is quickly pushed out, so that the sub-stages on both sides of the separation surface instantly gain a certain amount of kinetic energy, achieving the purpose of rapid separation.
[0003] After the pneumatic push rod is pushed out, there is still air pressure inside the pneumatic push rod and its inflation system. The pneumatic push rod is installed on the sub-stage of the recoverable rocket. Excessive gas pressure poses a major hidden danger to the recovery of the recoverable sub-stage. In addition, the gas remaining inside the pneumatic push rod and its inflation system will cause a certain amount of waste. In addition, in order to ensure the posture of the two sub-stages after separation so that they do not touch other parts of the rocket, it may be necessary to add additional guide mechanisms inside the rocket, thereby increasing the weight of the structure and reducing the rocket's payload.
[0004] Therefore, how to ensure the safety and reuse of recyclable sub-stages and increase the rocket's payload while ensuring the stability of the sub-stage's attitude is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention
[0005] The present application provides a recoverable rocket and its interstage separation guiding pneumatic push rod, so that after the pneumatic push rod is pushed out, the gas in the pneumatic push rod and its inflation system is discharged, thereby ensuring the safety and reuse of the recoverable sub-stage, and through the self-guiding of the pneumatic push rod, ensuring the stability of the posture of the two sub-stages after separation, and increasing the rocket's payload.
[0006] In order to solve the above technical problems, this application provides the following technical solutions:
[0007] A recyclable rocket inter-stage separation guide pneumatic push rod comprises: a base, an outer tube, an inner tube, a guide pin and a thrust bracket; the interior of the base is a cavity to be inflated, and the inflation end of the base has an inflation port that passes through the inside and the outside; the interior of the outer tube is a separation cavity, and the separation end of the outer tube has an assembly port that passes through the inside and the outside, and the butt end of the outer tube is butted with the butt end of the base to connect the separation cavity with the cavity to be inflated; the inner tube is located in the separation cavity, and its outer side wall is fitted with the inner side wall of the separation cavity, and the inner tube can slide in the separation cavity; one end of the guide pin is inserted into the separation cavity through the assembly port and plugged with the inner tube; the outer side wall of the outer tube has an exhaust pipe that communicates with the separation cavity, and the exhaust pipe is located near the separation end of the outer tube, and after the inner tube slides and fits to the separation end of the outer tube, the exhaust pipe is close to the inner tube and communicates with the separation cavity; the other end of the guide pin is connected to the thrust bracket.
[0008] As described above, the recyclable rocket inter-stage separation guide pneumatic push rod, wherein preferably, the diameter of the separation chamber is larger than the diameter of the chamber to be inflated, the outer diameter of the inner tube is smaller than the diameter of the separation chamber, and the outer diameter of the inner tube is larger than the diameter of the chamber to be inflated.
[0009] As described above, the recyclable rocket stage separation guide pneumatic push rod, wherein preferably, the outer side wall of the base has a docking protrusion protruding outward, and the docking protrusion extends a full circle along the circumferential direction; the docking surface of the docking protrusion facing the outer tube has a sealing groove, or the end surface of the docking end of the outer tube has a sealing groove, and a static sealing ring is arranged in the sealing groove; the docking end of the base is inserted into the outer tube by the docking end of the outer tube, and the docking end of the outer tube is pushed onto the docking protrusion to dock the docking end of the outer tube with the docking end of the base.
[0010] As described above, the recyclable rocket inter-stage separation guide pneumatic push rod, wherein, preferably, the diameter of the portion of the separation chamber close to the butt end is larger than the diameter of the portion of the separation chamber away from the butt end; and the dimension in which the diameter of the portion of the separation chamber close to the butt end is larger than the diameter of the portion of the separation chamber away from the butt end is smaller than the thickness of the butt end of the base.
[0011] As described above, the recyclable rocket inter-stage separation guide pneumatic push rod, wherein preferably, the outer side wall of the inner tube has a sealing groove, and a dynamic sealing ring is arranged in the sealing groove.
[0012] As described above, the recyclable rocket stage separation guide pneumatic push rod, wherein preferably, an assembly groove is opened on the side of the inner tube facing the assembly port, and one end of the guide pin extends into the assembly groove to realize the insertion of the guide pin and the inner tube.
[0013] As described above, the recyclable rocket inter-stage separation guide pneumatic push rod, wherein preferably, the diameter of the assembly opening of the outer tube is smaller than the outer diameter of the inner tube to prevent the inner tube from falling off from the assembly opening.
[0014] As described above, the reusable rocket inter-stage separation guide pneumatic push rod, wherein preferably, the extension direction of the inner section of the exhaust pipe is the same as the radial direction of the outer tube, and the extension direction of the outer section of the exhaust pipe is the same as the axial direction of the outer tube and is toward the separation end of the outer tube.
[0015] As described above, the recyclable rocket inter-stage separation guide pneumatic push rod, wherein preferably, the thrust bracket is fixedly connected to one end of the threaded rod, and the locking nut is screwed onto the threaded rod; the other end of the guide pin has an inwardly concave threaded hole, and the other end of the threaded rod is screwed into the threaded hole.
[0016] A recoverable rocket, comprising: a rocket body and an interstage separation guide pneumatic push rod as described in any one of the above claims; wherein the base and the outer tube are fixed to a sub-stage of the rocket body, and the base is connected to the inflation system of the sub-stage, and the thrust bracket is fixed to another adjacent sub-stage of the rocket body.
[0017] Compared with the above background technology, the pneumatic push rod for separating the recyclable rocket stages provided by the present application has an exhaust pipe. After working, the exhaust pipe on the outer tube can quickly discharge the gas in the inflatable chamber, the separation chamber and the inflatable system. The reaction force of this part of gas on the air is used to do secondary work, which can not only increase the kinetic energy of the two sub-stages of the rocket, but also speed up the separation speed of the two sub-stages of the rocket, and the sub-stage that exhausts the gas is more convenient for the collection and reuse of the recyclable rocket. In addition, the guide pin is inserted into the inner part of the outer tube, and the outer tube and the inner tube are used to achieve guidance, which ensures the stability of the posture of the two sub-stages after separation and increases the payload of the rocket. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of the recyclable rocket interstage separation guide pneumatic push rod provided by the present application before operation;
[0020] Figure 2 This is a schematic diagram of the recoverable rocket inter-stage separation guide pneumatic push rod after operation provided by the present application. DETAILED DESCRIPTION
[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.
[0022] like Figure 1 and Figure 2 As shown, the present application provides a recoverable rocket inter-stage separation guide pneumatic push rod, including: a base 110, an outer tube 120, an inner tube 130, a guide pin 140 and a thrust bracket 150.
[0023] The interior of the base 110 is a chamber to be inflated, and the inflating end of the base 110 has an inflating port that passes through the inside and outside, which is used to communicate with the inflating system, so that the chamber to be inflated of the base 110 can be filled with compressed gas (for example: nitrogen, helium, etc.) in advance to provide a larger initial power for separation; the interior of the outer cylinder 120 is a separation chamber, and the separation end of the outer cylinder 120 has an assembly port that passes through the inside and outside, which is used to insert the guide pin 150; the outer cylinder 120 and the base 110 are used to be fixed to a sub-stage, and the butt end of the outer cylinder 120 is butt-jointed with the butt end of the base 110, so as to connect the separation chamber with the chamber to be inflated. Since the outer cylinder 120 and the base 110 are not an integral structure, it is convenient to load the inner cylinder 130 into the separation chamber of the outer cylinder 120.
[0024] Optionally, the diameter of the separation chamber is larger than the diameter of the chamber to be inflated, and the outer diameter of the inner cylinder 130 is smaller than the diameter of the separation chamber, so that the inner cylinder 130 can be loaded into the separation chamber, and the outer diameter of the inner cylinder 130 is larger than the diameter of the chamber to be inflated, so that the inner cylinder 130 can be prevented from entering the chamber to be inflated, so that a certain amount of compressed gas can be filled into the chamber to be inflated in advance before separation, so as to provide a larger initial power for separation. Optionally, the outer wall of the base 110 has a docking protrusion protruding outward, and the docking protrusion extends a full circle along the circumferential direction; the docking end of the base 110 is inserted into the outer cylinder 120 by the docking end of the outer cylinder 120, and the docking end of the outer cylinder 120 is pushed onto the docking protrusion, thereby completing the docking of the docking end of the outer cylinder 120 with the docking end of the base 110. Alternatively, the docking surface of the docking protrusion facing the outer cylinder 120 has a sealing groove, or the end surface of the docking end of the outer cylinder 120 has a sealing groove; a static sealing ring 160 is arranged in the sealing groove, thereby ensuring the sealing of the docking point between the outer cylinder 120 and the base 110.
[0025] Alternatively, the diameter of the portion of the separation chamber near the butt end is larger than the diameter of the portion of the separation chamber away from the butt end, so that when the butt end of the base 110 is inserted into the outer cylinder 120, the butt end of the base 110 is limited; and the diameter of the portion of the separation chamber near the butt end is larger than the diameter of the portion of the separation chamber away from the butt end and is smaller than the thickness of the butt end of the base 110, so that when the butt end of the base 110 is inserted into the outer cylinder 120, it can ensure that the diameter of the separation chamber is larger than the diameter of the chamber to be inflated, thereby limiting the inner cylinder 130. Alternatively, the outer wall of the outer cylinder 120 protrudes outward near the butt end, so that the separation chamber at the corresponding position expands outward.
[0026] The inner cylinder 130 is located in the separation chamber, and its outer side wall is fitted with the inner side wall of the separation chamber, and the inner cylinder 130 can slide in the separation chamber; one end of the guide pin 140 is inserted into the separation chamber through the assembly port of the outer cylinder 120 and plugged with the inner cylinder 130; the outer side wall of the outer cylinder 120 has an exhaust pipe 121 connected to the separation chamber, and the exhaust pipe 121 is located near the separation end of the outer cylinder 120, and after the inner cylinder 130 slides and fits to the separation end of the outer cylinder 120, the exhaust pipe 121 is close to the inner cylinder 130 and is still connected to the separation chamber, so that when the inner cylinder 130 is located on the left side of the exhaust pipe 121, the compressed gas drives the inner cylinder 130 to move right, thereby achieving that the inner cylinder 130 is located on the right side of the exhaust pipe 121 after separation, which is conducive to the discharge of all the compressed gas in the separation chamber through the exhaust pipe 121.
[0027] Optionally, the outer wall of the inner cylinder 130 has a sealing groove, and a dynamic sealing ring 170 is arranged in the sealing groove, so that during the sliding process of the inner cylinder 130, the compressed gas in the left part of the separation chamber is prevented from penetrating into the right part of the separation chamber, thereby ensuring the separation effect. Optionally, the inner cylinder 130 is provided with an assembly groove on the side facing the assembly port, and one end of the guide pin 140 extends into the assembly groove, so as to achieve the plug-in connection between the guide pin 140 and the inner cylinder 130. Optionally, the diameter of the assembly port of the outer cylinder 120 is smaller than the outer diameter of the inner cylinder 130, so as to prevent the inner cylinder 130 from falling off from the assembly port. Still optionally, the separation end of the outer cylinder 120 extends outward with a fixed wing to increase the fixed contact surface between the outer cylinder 120 and the sub-stage. Optionally, the inner section of the exhaust pipe 121 extends in the same radial direction as the outer tube 120, and the outer section of the exhaust pipe 121 extends in the same axial direction as the outer tube 120 and toward the separation end of the outer tube 120, which is beneficial for the compressed gas in the separation chamber to be discharged outward.
[0028] The other end of the guide pin 140 is connected to the thrust bracket 150, and the thrust bracket 150 is used to be fixed to another sub-stage. Optionally, the thrust bracket 150 is fixedly connected to one end of the threaded rod 180, and the locking nut 190 is screwed onto the threaded rod 180; the other end of the guide pin 140 has an inwardly concave threaded hole, and the other end of the threaded rod 180 is screwed into the threaded hole, thereby realizing the threaded connection between the guide pin 140 and the threaded rod 180. When assembling the rocket, the guide pin 140 connected to one rocket sub-stage side is first inserted into the inner tube 130 of the other rocket sub-stage side, and then the guide pin 140 and the locking nut 190 are rotated so that the guide pin 140 and the inner tube 130 fit tightly.
[0029] The present application also provides a recoverable rocket, comprising: a rocket body and the above-mentioned interstage separation guide pneumatic push rod; wherein the base 110 and the outer tube 120 are fixed to a substage of the rocket body, and the base 110 is connected to the inflation system of the substage, and the thrust bracket 150 is fixed to another adjacent substage of the rocket body. In addition, the recoverable rocket interstage separation pneumatic push rod can also be used in other locations of the rocket that need to be separated, such as the fairing separation of the rocket body.
[0030] Since the pneumatic push rod for separating the recyclable rocket stages of the present application has an exhaust pipe, the exhaust pipe on the outer tube can quickly discharge the gas in the inflatable chamber, the separation chamber and the inflation system after work, and the reaction force of this part of the gas on the air is used to do secondary work, which can not only increase the kinetic energy of the two sub-stages of the rocket, but also speed up the separation speed of the two sub-stages of the rocket, and the sub-stage that exhausts the gas is more convenient for the collection and reuse of the recyclable rocket.
[0031] In addition, the guide pin is inserted into the inside of the outer tube, and the outer tube and the inner tube are used to achieve guidance, which ensures the stability of the attitude of the two sub-stages after separation and increases the rocket's payload.
[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A recyclable rocket interstage separation guide pneumatic push rod, characterized in that: include: Base, outer cylinder, inner cylinder, guide pins and thrust bracket; The interior of the base is an inflatable cavity, and the inflatable end of the base has an inflatable port that passes through the inside and outside; The interior of the outer tube is a separation chamber, the separation end of the outer tube has an assembly port that passes through the inside and outside, and the butt end of the outer tube is butt-jointed with the butt end of the base to connect the separation chamber with the chamber to be inflated; The inner cylinder is located in the separation chamber, the outer wall of the inner cylinder is in contact with the inner wall of the separation chamber, and the inner cylinder can slide in the separation chamber; One end of the guide pin is inserted into the separation chamber through the assembly opening and plugged into the inner tube; The outer wall of the outer cylinder has an exhaust pipe connected to the separation chamber. The exhaust pipe is located near the separation end of the outer cylinder. After the inner cylinder slides and fits to the separation end of the outer cylinder, the exhaust pipe is close to the inner cylinder and connected to the separation chamber. The other end of the guide pin is connected to the thrust bracket.
2. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1, characterized in that: The diameter of the separation chamber is larger than the diameter of the chamber to be inflated, the outer diameter of the inner tube is smaller than the diameter of the separation chamber, and the outer diameter of the inner tube is larger than the diameter of the chamber to be inflated.
3. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The outer side wall of the base is provided with a butt joint protrusion protruding outward, and the butt joint protrusion extends a whole circle along the circumferential direction; The butt joint surface of the butt joint protrusion facing the outer tube has a sealing groove, or the end surface of the butt joint end of the outer tube has a sealing groove, and a static sealing ring is arranged in the sealing groove; The butt joint end of the base is inserted into the outer tube through the butt joint end of the outer tube, and the butt joint end of the outer tube is pressed against the butt joint protrusion, so that the butt joint end of the outer tube is butt jointed with the butt joint end of the base.
4. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The diameter of the separation chamber near the butt end is larger than the diameter of the separation chamber far from the butt end; and the diameter of the separation chamber near the butt end is larger than the diameter of the separation chamber far from the butt end and is smaller than the thickness of the butt end of the base.
5. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The outer side wall of the inner cylinder is provided with a sealing groove, and a dynamic sealing ring is arranged in the sealing groove.
6. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: An assembly groove is provided on one side of the inner cylinder facing the assembly opening, and one end of the guide latch extends into the assembly groove to achieve plugging of the guide latch and the inner cylinder.
7. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The diameter of the assembly opening of the outer cylinder is smaller than the outer diameter of the inner cylinder to prevent the inner cylinder from falling off from the assembly opening.
8. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The extending direction of the inner section of the exhaust pipe is the same as the radial direction of the outer tube, and the extending direction of the outer section of the exhaust pipe is the same as the axial direction of the outer tube and faces the separation end of the outer tube.
9. The recyclable rocket interstage separation guide pneumatic push rod according to claim 1 or 2, characterized in that: The thrust bracket is fixedly connected to one end of the threaded rod, and the locking nut is screwed onto the threaded rod; The other end of the guide pin is provided with an inwardly concave threaded hole, and the other end of the threaded rod is screwed into the threaded hole.
10. A reusable rocket, comprising: A rocket body, characterized in that it also includes the interstage separation guide pneumatic push rod as described in any one of claims 1 to 9 above; The base and the outer tube are fixed to a sub-stage of the rocket body, and the base is connected to the inflation system of the sub-stage, and the thrust bracket is fixed to another adjacent sub-stage of the rocket body.