An assembly method for bundling a rocket booster and a core stage

Abstract

An assembly method for bundling a rocket booster and a core stage of the present invention. The assembly adopts a layout of main and auxiliary bundling points. The auxiliary bundling point adopts a configuration of two straight connecting rods and one inclined connecting rod. After the main bundling point is docked, the auxiliary bundling point is assembled. The assembly of the auxiliary bundling point includes: in addition to the three pairs of connecting rod installation interfaces of the auxiliary bundling point, adding a pair of connecting rod installation interfaces, which are respectively installed on the booster and the core stage; setting three process connecting rods, and the lengths of each process connecting rod are adjustable; installing the three process connecting rods, wherein, two process connecting rods are respectively connected to the two pairs of connecting rod installation interfaces corresponding to the two straight connecting rods of the auxiliary bundling point, and the third process connecting rod is connected to the added pair of connecting rod installation interfaces, and the third process connecting rod forms a certain angle with the two process connecting rods; adjusting the lengths of each process connecting rod to the theoretical length; installing the inclined connecting rod of the auxiliary bundling point; successively removing the process connecting rods and replacing them with the two straight connecting rods of the auxiliary bundling point; removing the added pair of connecting rod installation interfaces.

Description

Technical Field

[0001] The present invention relates to the assembly of strap-on rockets, and particularly to an assembly method for a booster and a core stage of a strap-on rocket. Background Art

[0002] At present, with the development of the space industry, the scheme of a launch vehicle with liquid or solid boosters strapped on has been widely used as an effective way to improve the launch capacity. The key point of the assembly of the booster and the core stage is the assembly of the booster connection and separation mechanism. This mechanism generally adopts the layout of main and auxiliary strap points. The main strap point is the core and uses a ball joint device. The auxiliary strap points are generally of a three-link configuration, and both ends of the link are ball joint devices. This mechanism has high requirements for its own and docking accuracy, and dangerous goods such as internal pyrotechnic devices have been installed. Moreover, the weight of the booster is getting larger and larger. Especially for solid boosters, due to the internal installation of propellant, the weight during docking is much greater than that of liquid boosters. Therefore, the assembly scheme of the booster and the core stage requires high precision, good safety, sufficient and controllable docking power.

[0003] At present, the assembly scheme of the booster and the core stage more relies on traditional schemes such as rope pulling and manual pushing when suspended by a tower crane. During the docking process, it is impossible to maintain the stable position of the booster and precise control, and there is a risk of damage to the product due to the collision between the booster and the core stage. Moreover, during the pulling and pushing process, the booster is prone to an overconstrained state, there is a risk of introducing additional loads, and after being amplified by the rocket's moment arm, it may cause excessive local bending moment loads on the product and damage the product.

[0004] In addition, the current assembly scheme of the booster and the core stage requires structural interfaces such as tower racks outside the rocket body to provide power supports such as pulling, and the interfaces are relatively complex. Summary of the Invention

[0005] The purpose of the present invention is to provide an assembly method for a booster and a core stage of a strap-on rocket, which can ensure that during the docking process of the booster and the core stage, the rocket body always maintains statically determinate constraints, the position is unique, the docking process is stable and safe, and the assembly precision is high.

[0006] To achieve the above object, the present invention provides an assembly method for bundling a rocket booster and a core stage. The assembly adopts a layout of main and auxiliary bundling points. The auxiliary bundling point adopts a configuration of two straight connecting rods and one inclined connecting rod. After the main bundling point is docked, the auxiliary bundling point is assembled. The assembly of the auxiliary bundling point includes: in addition to the three pairs of connecting rod mounting interfaces of the auxiliary bundling point, adding a pair of connecting rod mounting interfaces, which are respectively installed on the booster and the core stage; setting three process connecting rods, and the lengths of the process connecting rods are adjustable; installing the three process connecting rods, wherein, two process connecting rods are respectively connected to the two pairs of connecting rod mounting interfaces corresponding to the two straight connecting rods of the auxiliary bundling point, and the third process connecting rod is connected to the added pair of connecting rod mounting interfaces, and the third process connecting rod forms a certain angle with the two process connecting rods; adjusting the lengths of the process connecting rods to the theoretical lengths; installing the inclined connecting rod of the auxiliary bundling point; successively removing the process connecting rods and replacing them with the two straight connecting rods of the auxiliary bundling point; removing the added pair of connecting rod mounting interfaces.

[0007] In the above assembly method for bundling a rocket booster and a core stage, when installing the three process connecting rods, the length of each process connecting rod matches the actual distance between the booster and the core stage after hoisting.

[0008] In the above assembly method for bundling a rocket booster and a core stage, when installing the inclined connecting rod of the auxiliary bundling point, if there is still a deviation between the length of the inclined connecting rod and the distance between the pair of connecting rod mounting interfaces corresponding to the inclined connecting rod, continue to precisely adjust the lengths of the process connecting rods so that the distance between the pair of connecting rod mounting interfaces matches the length of the inclined connecting rod, and complete the installation of the inclined connecting rod.

[0009] In the above assembly method for bundling a rocket booster and a core stage, successively removing the process connecting rods and replacing them with the two straight connecting rods of the auxiliary bundling point includes: removing one process connecting rod connected to the connecting rod mounting interface corresponding to the straight connecting rod of the auxiliary bundling point and replacing it with a straight connecting rod of the auxiliary bundling point; removing the other process connecting rod connected to the connecting rod mounting interface corresponding to the straight connecting rod of the auxiliary bundling point and replacing it with a straight connecting rod of the auxiliary bundling point; removing the third process connecting rod.

[0010] In the above assembly method for bundling a rocket booster and a core stage, when installing the straight connecting rod of the auxiliary bundling point, if there is still a deviation between the length of the straight connecting rod and the distance between the pair of connecting rod mounting interfaces corresponding to the straight connecting rod, continue to precisely adjust the length of the process connecting rod so that the distance between the pair of connecting rod mounting interfaces matches the length of the straight connecting rod, and complete the installation of the straight connecting rod.

[0011] In the above assembly method for bundling a rocket booster and a core stage, both ends of the three process connecting rods are spherical hinge structures, which are all applicable to match the connecting rod mounting interfaces of the auxiliary bundling point.

[0012] The above-mentioned method for assembling a bundled rocket booster and a core stage, wherein, after three process connecting rods are installed, one process connecting rod is not parallel to the other two process connecting rods, and the length of this process connecting rod is not equal to the lengths of the other two process connecting rods.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0014] 1) The present invention forms a statically determinate constraint with the main bundled point ball hinge device, which can ensure that during the docking process of the booster and the core stage, the rocket body always maintains a statically determinate constraint, the position is unique, and the docking process is stable and safe;

[0015] 2) The relative position of the booster and the core stage of the present invention is realized by precisely adjusting the length of the process connecting rod, meeting the requirements of docking accuracy;

[0016] 3) The external loads introduced by the docking of the present invention are controlled on the connecting rods. The load position is uniquely determined, and the load magnitude can be calculated by the load calculation method of the statically determinate structure. At the same time, the load magnitude is judged by the power input required during the process of adjusting the process connecting rod;

[0017] 3) All the interfaces used in the present invention are such that all the docking interfaces are inside the rocket body such as the core stage and the booster, without the need to have interface relationships with external tower racks, etc. The docking external requirements are few, the interfaces are simple, the dependence on external resources is small, and the applicability is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The method for assembling a bundled rocket booster and a core stage of the present invention is given by the following embodiments and drawings.

[0019] Figure 1 It is a schematic diagram of the principle of assembling a bundled rocket booster and a core stage.

[0020] Figure 2 It is a schematic diagram of the assembly of a bundled rocket booster and a core stage according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will combine Figures 1 to 2 to further describe in detail the method for assembling a bundled rocket booster and a core stage of the present invention.

[0022] Figure 1 As shown, it is a schematic diagram of the principle of assembling a bundled rocket booster and a core stage.

[0023] As Figure 1, the booster is assembled with the core stage through a booster connection and separation mechanism. This connection and separation mechanism adopts a layout of main and auxiliary bundling points. The main bundling point is located at the tail of the booster 10 and uses a spherical hinge device 0. The auxiliary bundling point is located at the front of the booster 10 and adopts a three-link configuration (the first link 1, the second link 2, and the third link 3). Link installation interfaces are set on the booster and the core stage. Both ends of each link are spherical hinge structures, and the links are connected to the link installation interfaces through the spherical hinge structures. For the three links of the auxiliary bundling point, the first link 1 and the second link 2 are parallel to each other, and the third link 3 forms a certain angle with both the first link 1 and the second link 2.

[0024] Figure 2 Schematic diagram of the assembly of the bundled rocket booster and the core stage in an embodiment of the present invention.

[0025] As Figure 2 , the method for assembling the bundled rocket booster and the core stage in this embodiment includes:

[0026] 1) Hoist the booster 10 close to the core stage 20;

[0027] The booster 10 is hoisted in a vertical state and close to the core stage 20. The approaching distance should be less than the maximum adjustable length of the first process link 1′, the second process link 2′, and the third process link 3′;

[0028] 2) Docking of the main bundling point;

[0029] The spherical hinge device 0 of the main bundling point between the booster 10 and the core stage 20 is first docked completely;

[0030] 3) Install the link installation interfaces of the auxiliary bundling point on the booster 10 and the core stage 20. Additionally, add a pair of link installation interfaces and install them on the booster 10 and the core stage 20 respectively. This added pair of link installation interfaces is used to connect the inclined links;

[0031] As Figure 1 , the auxiliary bundling point adopts a three-link configuration. Three pairs of link installation interfaces are set corresponding to the three links (the first link 1, the second link 2, and the third link 3) respectively for connecting these three links; the auxiliary bundling point is pre-designed, and the three pairs of link installation interfaces are installed at the corresponding positions of the booster 10 and the core stage 20. The first pair of link installation interfaces is used to connect the first link 1, the second pair of link installation interfaces is used to connect the second link 2, and the third pair of link installation interfaces is used to connect the third link 3. Among them, the first link 1 and the second link 2 are parallel to each other, and the third link 3 forms a certain angle with both the first link 1 and the second link 2;

[0032] To accurately assemble the booster and the core stage, in addition to the three pairs of connecting rod mounting interfaces at the auxiliary tie points in this embodiment, a fourth pair of connecting rod mounting interfaces is added. The connecting rod connected to the fourth pair of connecting rod mounting interfaces forms a certain angle with both the first connecting rod 1 and the second connecting rod 2; the fourth pair of connecting rod mounting interfaces is exactly the same as the other three pairs of connecting rod mounting interfaces in structure;

[0033] As Figure 2 shown in ① of [reference], install the first double-interface support 201 and the second double-interface support 202 on the core stage 20, and install the first single-interface support 101, the second single-interface support 102, the third single-interface support 103, and the fourth single-interface support 104 on the booster 10. One interface in the first double-interface support 201 and the first single-interface support 101 form the second pair of connecting rod mounting interfaces, and the other interface in the first double-interface support 201 and the second single-interface support 102 form the fourth pair of connecting rod mounting interfaces. One interface in the second double-interface support 202 and the third single-interface support 103 form the third pair of connecting rod mounting interfaces, and the other interface in the second double-interface support 202 and the fourth single-interface support 104 form the first pair of connecting rod mounting interfaces;

[0034] 3) Set three process connecting rods with adjustable lengths and install the three process connecting rods;

[0035] To accurately assemble the booster and the core stage, in this embodiment, three process connecting rods are set, namely the first process connecting rod 1′, the second process connecting rod 2′, and the third process connecting rod 3′. The lengths of these three process connecting rods are all adjustable, while the lengths of the three connecting rods at the auxiliary tie points, namely the first connecting rod 1, the second connecting rod 2, and the third connecting rod 3, are all non-adjustable. The first connecting rod 1, the second connecting rod 2, and the third connecting rod 3 are part of the booster connection and separation mechanism, and the three process connecting rods do not belong to the booster connection and separation mechanism, but are only auxiliary tools used in the assembly process;

[0036] Both ends of the three process connecting rods are spherical hinge structures and are all suitable for matching with the four pairs of connecting rod mounting interfaces;

[0037] As Figure 2 shown in ① of [reference], both ends of the first process connecting rod 1′ are respectively connected to the first pair of connecting rod mounting interfaces, the second process connecting rod 2′ is connected to the second pair of connecting rod mounting interfaces, and the third process connecting rod 3′ is connected to the fourth pair of connecting rod mounting interfaces. At this time, the lengths of the respective process connecting rods match the actual distance between the booster 10 and the core stage 20 after hoisting (i.e., after step 2);

[0038] 5) Adjust the lengths of the respective process connecting rods to the theoretical lengths, and the booster 10 can be made to be in the theoretical position relative to the core stage 20, as Figure 2 shown in ② of [reference];

[0039] 6) Install the third connecting rod 3, as Figure 2 shown in ② of [reference];

[0040] After adjusting the lengths of the process connecting rods to their theoretical lengths, start installing the three connecting rods at the auxiliary binding points of the booster connection and separation mechanism, namely the first connecting rod 1, the second connecting rod 2, and the third connecting rod 3. First, install the third connecting rod 3, and connect the two ends of the third connecting rod 3 to the third pair of connecting rod installation interfaces respectively;

[0041] If there is still a deviation between the length of the third connecting rod 3 and the distance between the third pair of connecting rod installation interfaces during installation, the lengths of the process connecting rods can be further precisely adjusted to make the distance between the third pair of connecting rod installation interfaces match the length of the third connecting rod 3, and complete the installation of the third connecting rod 3;

[0042] 7) Sequentially remove the process connecting rods and replace them with the connecting rods at the auxiliary binding points of the booster connection and separation mechanism;

[0043] As Figure 2 shown in ③, after the third connecting rod 3 is installed, remove the first process connecting rod 1′. As Figure 2 shown in ④, after removing the first process connecting rod 1′, install the first connecting rod 1, and connect the two ends of the first connecting rod 1 to the first pair of connecting rod installation interfaces respectively. If there is still a deviation between the length of the first connecting rod 1 and the distance between the first pair of connecting rod installation interfaces during installation, the lengths of the first process connecting rod 1′ and the third process connecting rod 3′ can be further precisely adjusted to make the distance between the first pair of connecting rod installation interfaces match the length of the first connecting rod 1, and complete the installation of the first connecting rod 1;

[0044] As Figure 2 shown in ⑤, after the first connecting rod 1 is installed, remove the second process connecting rod 2′. As Figure 2 shown in ⑥, after removing the second process connecting rod 2′, install the second connecting rod 2, and connect the two ends of the second connecting rod 2 to the second pair of connecting rod installation interfaces respectively. If there is still a deviation between the length of the second connecting rod 2 and the distance between the second pair of connecting rod installation interfaces during installation, the length of the third process connecting rod 3′ can be further precisely adjusted to make the distance between the second pair of connecting rod installation interfaces match the length of the second connecting rod 2, and complete the installation of the second connecting rod 2;

[0045] As Figure 2 shown in ⑦, after the three connecting rods at the auxiliary binding points of the booster connection and separation mechanism are all installed, remove the third process connecting rod 3′;

[0046] 8) Remove the additional fourth pair of connecting rod installation interfaces;

[0047] As Figure 2 shown in ⑧, remove the second single - interface support 102.

Claims

1. An assembly method for bundling a rocket booster and a core stage. The assembly adopts a layout of main and auxiliary bundling points. The auxiliary bundling points adopt a configuration of two straight connecting rods and one inclined connecting rod, and is characterized in that, After the main binding point is docked, the auxiliary binding point is assembled. The assembly of the auxiliary binding point includes: In addition to the three pairs of connecting rod mounting interfaces of the auxiliary binding point, an additional pair of connecting rod mounting interfaces are provided and installed on the booster and the core stage respectively; Three process connecting rods are set, and the length of each process connecting rod is adjustable; Install three process connecting rods. Among them, two process connecting rods are respectively connected to the two pairs of connecting rod mounting interfaces corresponding to the two straight connecting rods of the auxiliary binding point, and the third process connecting rod is connected to the additional pair of connecting rod mounting interfaces. The third process connecting rod forms a certain angle with the two process connecting rods; Adjust the length of each process connecting rod to the theoretical length; Install the inclined connecting rod of the auxiliary binding point; when installing the inclined connecting rod of the auxiliary binding point, if there is still a deviation between the length of the inclined connecting rod and the distance between the pair of connecting rod mounting interfaces corresponding to the inclined connecting rod, continue to precisely adjust the length of each process connecting rod so that the distance between the pair of connecting rod mounting interfaces matches the length of the inclined connecting rod, and complete the installation of the inclined connecting rod; Successively remove the process connecting rods and replace them with two straight connecting rods of the auxiliary binding point, including: removing one process connecting rod connected to the connecting rod mounting interface corresponding to the straight connecting rod of the auxiliary binding point and replacing it with a straight connecting rod of the auxiliary binding point; removing the other process connecting rod connected to the connecting rod mounting interface corresponding to the straight connecting rod of the auxiliary binding point and replacing it with a straight connecting rod of the auxiliary binding point; removing the third process connecting rod; Remove the additional pair of connecting rod mounting interfaces.

2. The assembly method of a bundled rocket booster and a core stage according to claim 1, characterized in that, When installing the three process connecting rods, the length of each process connecting rod matches the actual distance between the booster and the core stage after hoisting.

3. The assembly method of a bundled rocket booster and a core stage as claimed in claim 1, characterized in that, When installing the straight connecting rod of the auxiliary binding point, if there is still a deviation between the length of the straight connecting rod and the distance between the pair of connecting rod mounting interfaces corresponding to the straight connecting rod, continue to precisely adjust the length of the process connecting rod so that the distance between the pair of connecting rod mounting interfaces matches the length of the straight connecting rod, and complete the installation of the straight connecting rod.

4. A method for assembling a bundled rocket booster and a core stage according to claim 1, wherein Both ends of the three process connecting rods are spherical hinge structures and are all applicable to match the connecting rod mounting interfaces of the auxiliary binding point.

5. A method for assembling a bundled rocket booster and a core stage according to claim 1, wherein After the three process connecting rods are installed, one process connecting rod is not parallel to the other two process connecting rods, and the length of this process connecting rod is not equal to the lengths of the other two process connecting rods.

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