Reusable fairing structure
By adding semi-enclosed connecting plate, reinforcement rib and special-shaped reinforcement to the structure of the fairing, the structural disassembly and bending resistance of the fairing during the reentry stage is solved, the load-bearing capacity of the fairing is improved, and the reused use is met. Requires and reduces rocket launch costs.
Patent Information
- Application Number
- CN202411439175.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2024-12-31
AI Technical Summary
The prior art is difficult to solve the problems of structural disintegration, insufficient bending characteristics and weak connection strength during the reuse of launch vehicle fairings, resulting in structural deformation and damage of the fairings during the reentry stage.
A semi-hard shell half-hood structure with half-front conical section, half-front column section and half-rear column section is connected by bolts and self-locking nuts, and a semi-enclosed connecting plate, reinforcement ribs, and semi-circular connection are added to key parts. Plate and special-shaped reinforcement improve resistance to deformation and bending.
It significantly improves the resistance to deformation and bending of the fairing, extends its service life, and reduces the cost of rocket launching.
Smart Images
Figure CN119223104A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of launch vehicle fairing structures, in particular to a reusable fairing structure. Background Art
[0002] The reuse of launch vehicles is an important goal of the aerospace industry, which can significantly reduce launch costs and improve launch efficiency. In recent years, the technology of reuse of launch vehicles has made significant progress.
[0003] The fairing is a component that protects satellites or payloads from atmospheric friction and high temperatures during rocket launch. During rocket launch, the fairing is usually discarded after entering space, so a new fairing is required for each launch. However, the manufacturing cost of the fairing is high, so reusing the fairing can significantly reduce the launch cost.
[0004] The background of fairing reuse mainly includes the following aspects:
[0005] 1. Fairing recovery technology: After entering the atmosphere, the fairing is usually recovered by parachute or other means. The recovery technology needs to ensure that the fairing remains stable during the landing process and can land safely.
[0006] 2. Fairing refurbishment technology: The recovered fairing needs to be refurbished before it can be used again. The refurbishment technology includes checking the structural integrity of the fairing, repairing any damage, and repainting.
[0007] 3. Fairing launch technology: The refurbished fairing needs to be able to be used for rocket launch again. Launch technology needs to ensure that the fairing can be safely installed on the rocket and remain stable during launch.
[0008] However, all of the above technologies need to address the stability and safety issues of the fairing during repeated use, including the fairing's structural integrity, material properties and surface treatment, structural damage and defects, and other issues. Summary of the invention
[0009] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a reusable fairing structure, and to solve the problem of structural disintegration and destruction of the reusable fairing under high load conditions during the re-entry phase.
[0010] The technical solution of the present invention is: a reusable fairing structure, comprising: a semi-front cone section main structure, a semi-front pillar section main structure and a semi-rear pillar section main structure connected in sequence; the semi-front cone section main structure, the semi-front pillar section main structure and the semi-rear pillar section main structure are all connected at the transverse connection surface with bolts and self-locking nuts and anti-loosening treatment is performed.
[0011] A number of semi-enclosed connecting plates are installed on the front end face, rear end face and middle position of the main structure of the semi-front cone section; the semi-enclosed connecting plates are connected to the front end frame, middle middle frame and rear end frame in the main structure of the semi-front cone section, and the connecting areas are the overlapping parts of the arc-shaped outer edges of the front end frame, middle frame and rear end frame with the closed connecting plates, which are connected by screws and self-locking nuts and anti-loosening treatment is performed.
[0012] Reinforcing ribs are respectively installed on the upper and lower surfaces of the semi-enclosed connecting plate; at the same time, circular lightening holes are arranged on the semi-enclosed connecting plate, and the lightening holes are formed by stamping.
[0013] Semicircular connecting plates are installed on the outer surfaces of the openings on both sides of the transverse connecting surface between the main structure of the semi-front cone section and the main structure of the semi-front column section, and are connected and prevented from loosening by means of screws and self-locking nuts; the semicircular connecting plates span the transverse connecting surface, and the straight edges thereof are flush with the longitudinal butt girders of the main structure of the semi-front cone section and the main structure of the semi-front column section.
[0014] The semicircular connecting plate is a thin plate structure, and the fitting surface with the half front cone section and the half front column section is an arc surface, and the radius is consistent with the half front cone section and the half front column section.
[0015] The rear end frame of the main structure of the semi-rear pillar section adopts an E-shaped rear end frame formed by roll-bending an E-shaped cross-section profile; a special-shaped reinforcement member is installed in the middle area of the E-shaped rear end frame.
[0016] The main structure of the semi-front cone section, the main structure of the semi-front pillar section and the main structure of the semi-rear pillar section are all semi-monocoque and semi-cover structures, and are all formed by riveting or screwing together the skin, the middle frame, the front end frame, the rear end frame, the reinforcing beams and the butt beam components.
[0017] The cross-sectional dimensions of the special-shaped reinforcement are adapted and coordinated with those of the E-shaped rear end frame, so that the cross-sectional dimensions are a closed entity after being plugged into the E-shaped rear end frame; the special-shaped reinforcement is connected to the E-shaped rear end frame by screws and glue is applied to prevent loosening.
[0018] The advantages of the present invention compared with the prior art are:
[0019] The present invention designs a semi-enclosed local reinforcement structure for the front cone section, and a reliable connection is achieved between the main structure of the front cone section and the semi-enclosed connecting plate, thereby improving the deformation resistance of the main structure of the front cone section and solving the problem of structural deformation and disintegration of the fairing under the action of aerodynamic force during the re-entry stage.
[0020] Aiming at the problem of weak connection strength at the fairing process separation surface, the present invention designs a semicircular plate type local connection reinforcement structure, which solves the problem of premature disintegration of the fairing during the re-entry stage.
[0021] Aiming at the insufficient anti-bending property of the rear end face of the fairing, the present invention designs a special-shaped end frame local increase structure, improves the local bending stiffness, and solves the torsional damage problem of the fairing during the re-entry stage. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the reusable fairing of the present invention.
[0023] Figure 2 The figure is a schematic diagram of the position of the semi-enclosed connecting plate installed in the main structure of the semi-front cone section of the reusable fairing of the present invention.
[0024] Figure 3 It is a schematic diagram of the main structure of the semi-front cone section of the reusable fairing of the present invention and the installation structure of the semi-enclosed connecting plate.
[0025] Figure 4 The present invention is a schematic diagram of a semicircular connecting plate structure installed on a semi-front cone section main structure and a semi-front pillar section main structure of a reusable fairing.
[0026] FIG. 5( a ) is a schematic diagram showing the position of the special-shaped reinforcement installed on the rear end frame of the E-shaped cross-section of the main structure of the semi-rear column section of the reusable fairing of the present invention.
[0027] FIG5( b ) is a cross-sectional schematic diagram of the E-shaped section of the rear end frame of the reusable fairing semi-rear column section of the present invention for installing a special-shaped reinforcement. DETAILED DESCRIPTION
[0028] like Figure 1 As shown, the reusable fairing structure designed by the present invention is as follows: it includes a semi-front cone section main structure 1, a semi-front column section main structure 5 and a semi-rear column section main structure 7, all of which are semi-monocoque semi-cover structures, formed by riveting or screwing components such as a skin, a middle frame, a front end frame, a rear end frame, a reinforcing stringer, and a docking stringer; the semi-front cone section main structure 1, the semi-front column section main structure 5 and the semi-rear column section main structure 7 are connected and prevented from loosening at the transverse connection surface by bolts and self-locking nuts;
[0029] like Figure 2 , 3 As shown, a plurality of semi-enclosed connection plates 2 are installed on the front end face, the rear end face and the middle position of the semi-front cone section main structure 1; the semi-enclosed connection plates 2 are connected with the front end frame, the middle frame and the rear end frame in the semi-front cone section main structure 1, and the connection areas are the overlapped parts of the arc-shaped outer edges of the front end frame, the middle frame and the rear end frame with the enclosed connection plates, and are connected and prevented from loosening by screws and self-locking nuts;
[0030] The upper and lower surfaces of the semi-enclosed connecting plate 2 are respectively provided with reinforcing ribs 3 and connected with rivets; at the same time, a Φ200mm circular lightening hole 4 is provided on the semi-enclosed connecting plate 2, and the circular lightening hole 4 is formed by stamping;
[0031] In the above connection mode, the semi-front cone section main structure 1 and the semi-enclosed connection plate 2 are reliably connected, which significantly improves the anti-deformation ability of the semi-front cone section main structure 1 and solves the problem of structural deformation and disintegration under the action of aerodynamic force during the re-entry stage of the fairing.
[0032] like Figure 4 As shown, semicircular connecting plates 6 are installed on the outer surfaces of the openings on both sides of the transverse connecting surface between the semi-front cone section main structure 1 and the semi-front column section main structure 5, and are connected and prevented from loosening by using screws and self-locking nuts; the semicircular connecting plate 6 spans the transverse connecting surface, and its straight edge is flush with the longitudinal butt girders of the semi-front cone section main structure 1 and the semi-front column section main structure 5; the fitting surface of the semicircular connecting plate 6 and the semi-front cone section and the semi-front column section is an arc surface, and the radius is consistent with that of the semi-front cone section and the semi-front column section;
[0033] Under the above connection mode, the structural strength of the transverse connection surface between the semi-front cone section main structure 1 and the semi-front pillar section main structure 5 is improved, and the problem of premature disintegration of the fairing during the re-entry stage is solved;
[0034] like Figure 5(a) , 5(b) As shown, the rear end frame of the semi-rear column section main structure 7 adopts an E-shaped rear end frame 8 formed by rolling and bending an E-shaped cross-section profile; a special-shaped reinforcement 9 is installed in the middle area of the E-shaped rear end frame 8; the cross-sectional dimensions of the special-shaped reinforcement 9 are adapted and coordinated with the cross-sectional dimensions of the E-shaped rear end frame 8, so that the cross-sectional dimensions are a closed entity after being plugged into the E-shaped rear end frame 8; the special-shaped reinforcement 9 is connected to the E-shaped rear end frame 8 by screws, and glue is applied to prevent loosening;
[0035] Under the above connection mode, the E-shaped rear end frame 8 of the semi-rear column section main structure 7 improves the local bending stiffness and solves the torsional damage problem of the fairing during the re-entry stage.
[0036] The successful application of the present invention improves the bearing capacity of the fairing structure, meets the use requirements of the reusable fairing under high load conditions in the re-entry phase, and reduces the cost of rocket launches in my country.
[0037] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.
Claims
1. A reusable fairing structure, characterized in that: include: The semi-front cone section main structure (1), the semi-front pillar section main structure (5) and the semi-rear pillar section main structure (7) are connected in sequence; the semi-front cone section main structure (1), the semi-front pillar section main structure (5) and the semi-rear pillar section main structure (7) are connected at the transverse connection surface by bolts and self-locking nuts and anti-loosening treatment is performed.
2. A reusable fairing structure according to claim 1, characterized in that: A plurality of semi-enclosed connection plates (2) are installed on the front end face, the rear end face and the middle position of the semi-front cone section main structure (1); the semi-enclosed connection plates (2) are connected to the front end frame, the middle frame and the rear end frame in the semi-front cone section main structure (1); the connection areas are the overlapped parts of the front end frame, the middle frame and the rear end frame with the arc-shaped outer edge of the enclosed connection plates, and are connected by screws and self-locking nuts and anti-loosening treatment is performed.
3. A reusable fairing structure according to claim 2, characterized in that: Reinforcing ribs (3) are respectively installed on the upper and lower surfaces of the semi-enclosed connecting plate (2); at the same time, a circular lightening hole (4) is arranged on the semi-enclosed connecting plate (2), and the lightening hole (4) is formed by stamping.
4. A reusable fairing structure according to claim 1, characterized in that: Semicircular connecting plates (6) are installed on the outer surfaces of the openings on both sides of the transverse connecting surface between the semi-front cone section main structure (1) and the semi-front column section main structure (5), and are connected and prevented from loosening by means of screws and self-locking nuts; the semicircular connecting plates (6) span the transverse connecting surface, and the straight edges thereof are flush with the longitudinal butt girders of the semi-front cone section main structure (1) and the semi-front column section main structure (5).
5. A reusable fairing structure according to claim 4, characterized in that: The semicircular connecting plate (6) is a thin plate structure, and the surface fitting with the semi-front cone section and the semi-front column section is an arc surface, and the radius is consistent with the semi-front cone section and the semi-front column section.
6. A reusable fairing structure according to claim 1, characterized in that: The rear end frame of the semi-rear column section main structure (7) adopts an E-shaped rear end frame (8) formed by roll-bending an E-shaped cross-section profile; a special-shaped reinforcement member (9) is installed in the middle area of the E-shaped rear end frame (8).
7. A reusable fairing structure according to claim 1, characterized in that: The semi-front cone section main structure (1), the semi-front pillar section main structure (5) and the semi-rear pillar section main structure (7) are all semi-monocoque semi-cover structures, and are formed by riveting or screwing together a skin, a middle frame, a front end frame, a rear end frame, a reinforcing truss and a butt truss assembly.
8. A reusable fairing structure according to claim 6, characterized in that: The cross-sectional dimensions of the special-shaped reinforcement member (9) are adapted and coordinated with the cross-sectional dimensions of the E-shaped rear end frame (8), so that the cross-sectional dimensions of the special-shaped reinforcement member (9) and the E-shaped rear end frame (8) are a closed solid after being plugged in; the special-shaped reinforcement member (9) and the E-shaped rear end frame (8) are connected by screws and glue is applied to prevent loosening.