CN113820095A - Wind tunnel scale model assembly of bundled rocket - Google Patents
Wind tunnel scale model assembly of bundled rocket Download PDFInfo
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- CN113820095A CN113820095A CN202110965510.2A CN202110965510A CN113820095A CN 113820095 A CN113820095 A CN 113820095A CN 202110965510 A CN202110965510 A CN 202110965510A CN 113820095 A CN113820095 A CN 113820095A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention provides a wind tunnel scale model component of a bundled rocket, which comprises: a core stage; a booster; the first connecting assembly comprises a fixed lug, a connecting shaft structure and a rotating lug, and the connecting shaft structure is connected between the fixed lug and the rotating lug; the second connecting assembly comprises a spherical bolt and a spherical bowl; the core stage and the booster are connected by a first connecting assembly and a second connecting assembly. The technical scheme of the invention effectively solves the problem that the influence on stress and strain is large when the wind load test of the bound rocket is simulated in the prior art.
Description
Technical Field
The invention relates to the technical field of rocket devices, in particular to a wind tunnel scale model component for a bundled rocket.
Background
The ground wind load of the rocket is the main design load of the rocket body structure, particularly the tail structure, and the wind load research has important significance for the structural design of the rocket. Because the ground wind-induced load response of the rocket is closely related to the appearance, dynamic characteristics and wind field environment of the surface detailed structure of the rocket, no matter the wind-induced load response is theoretically predicted and numerically simulated, or wind-induced load tests of rockets of the previous models cannot give available results. In the engineering, the wind load of the rocket in the vertical state is determined mainly by wind tunnel blowing test and analysis of a scaling model.
Compared with a physical rocket, the bundled rocket scaling model for the wind tunnel test needs to meet certain similarity requirements, wherein a connecting structure between the core stage and the booster is designed according to a force transmission form of a real bundling device. According to the design requirement of a wind tunnel scale model of the bound rocket, the central core stage and the booster are connected through an upper connecting component and a lower connecting component. Because the space between the scale mold core stage and the booster is limited, when the rotary support lug and the double-shaft joint structure assembly, the spherical bolt and the spherical bowl structure assembly are assembled to the scale model of the bound rocket wind tunnel, one side of the assembly is connected with the barrel section through a screw, and the other side of the assembly needs to perform opening redesign on the barrel section. The bearing performance of the large opening of the cylinder section structure is obviously reduced, when the rocket scaling model is bound to perform a wind tunnel test, the wind speed is as high as 60-80 m/s, and the opening of the cylinder section structure can greatly influence the stress strain of the rocket scaling model, so that the test is influenced.
Disclosure of Invention
The invention provides a wind tunnel scale model component of a bundled rocket, which solves the problem that the wind load test of the bundled rocket is simulated in the prior art, and the stress and strain are greatly influenced.
According to an aspect of the invention, a wind tunnel scale model assembly of a bundled rocket is provided, which comprises: a core stage; a booster; the first connecting assembly comprises a fixed lug, a connecting shaft structure and a rotating lug, and the connecting shaft structure is connected between the fixed lug and the rotating lug; the second connecting assembly comprises a spherical bolt and a spherical bowl; the core stage and the booster are connected through a first connecting assembly and a second connecting assembly; when the load of the core stage is more than or equal to the load of the booster, the fixed support lug is connected with the core stage through a screw, the spherical bolt is connected with the core stage through a screw, the cylinder wall of the booster is provided with a first mounting hole and a second mounting hole, the rotary support lug is arranged in the first mounting hole in a penetrating manner and is connected with the cylinder wall of the booster, the second connecting assembly is arranged in the second mounting hole in a penetrating manner, and the ball bowl is connected with the booster and the spherical bolt; when the load of the booster is larger than or equal to the load of the core level, the fixed support lug is connected with the booster through a screw, the spherical bolt is connected with the booster through a screw, the wall of the core level is provided with a first mounting hole and a second mounting hole, the rotary support lug is arranged in the first mounting hole in a penetrating mode and connected with the wall of the core level, the second connecting component is arranged in the second mounting hole in a penetrating mode, and the ball bowl is connected with the core level and the spherical bolt.
Furthermore, the spherical bolt comprises a screw and a connecting disc, the connecting disc is positioned in the middle of the screw, a central shaft of the screw is coincided with a central shaft of the connecting disc, and a spherical concave surface is arranged on one side of the connecting disc, which faces the first end of the ball head connection simulation assembly; the ball bowl comprises a ball bowl body and a connecting part, the connecting part is connected to the ball bowl body, the ball bowl body and the spherical concave surface are matched and at least partially positioned in the spherical concave surface, a through hole is formed in the center of the ball bowl body, and the screw rod penetrates through the through hole; the first end of the screw is connected to the nut and/or the second end of the screw is connected to the nut.
Furthermore, the concave direction of the ball bowl body is from large load to small load, and the outer wall surface of the spherical main body is matched with the inner wall surface of the spherical concave surface.
Furthermore, the ball head connection simulation assembly further comprises a spherical cushion block, the surface of the spherical cushion block, which is matched with the inner wall surface of the ball bowl body, is a spherical surface, the spherical cushion block is provided with a through hole, the screw rod penetrates through the through hole, the central axis of the screw rod and the central axis of the spherical cushion block are coaxially arranged, and the surface of one side of the principle spherical surface of the spherical cushion block is a plane.
Further, the screw comprises a conical section, the diameter of the conical section is from small to large in the direction from large load to small load, the through hole is a conical through hole matched with the conical section, and the conical section is located in the conical through hole.
Further, the second connecting assembly further includes an inner pad disposed between the inner wall surface having a large load and the connecting portion.
Further, the second connecting assembly further comprises an outer cushion block, the outer cushion block is arranged on the outer wall surface with large load, and the screw penetrates through the outer cushion block, the shell with large load, the inner cushion block and the connecting portion in sequence to be fixed.
Further, the second connecting assembly further includes a lateral outer pad that is pressed between the connecting disc and an outer wall surface of the case with a small load.
Further, the second connecting assembly further comprises a side-to-inner cushion block, and a second countersunk head bolt sequentially penetrates through the inner cushion block, the shell with small load, the side-to-outer cushion block and the connecting disc to be in threaded connection.
By applying the technical scheme of the invention, the smaller load of the core stage and the booster is provided with the first mounting hole and the second mounting hole, and the component needing to be perforated in the first connecting assembly and the component needing to be perforated in the second connecting assembly are mounted, so that the stress strain influence on the rocket wind tunnel binding scale model assembly is smaller, and the space structure of the rocket wind tunnel binding scale model assembly is fully utilized. The technical scheme of the invention effectively solves the problem that the wind load test of the simulation bundled rocket in the prior art has great influence on stress and strain.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a schematic structural diagram of a first connecting component of a bundled rocket wind tunnel scale model component in the embodiment;
FIG. 2 shows a schematic structural diagram of a second linkage assembly of the bundled rocket wind tunnel scale model assembly of FIG. 1;
FIG. 3 is a schematic diagram showing the arrangement design concept of the bundled rocket wind tunnel scale model component in FIG. 1;
fig. 4 shows a schematic structural diagram of a second connection component of the bundled rocket wind tunnel scale model component of fig. 1.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present disclosure will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
As shown in fig. 1 to 4, the wind tunnel scale model assembly of the bundled rocket of the present embodiment includes: the booster comprises a core stage, a booster, a first connecting assembly and a second connecting assembly. The first connecting assembly comprises a fixed lug 1, a connecting shaft structure and a rotary lug 2, and the connecting shaft structure is connected between the fixed lug and the rotary lug. The second connection assembly includes a ball stud and a ball bowl. The core stage and the booster are connected by a first connecting assembly and a second connecting assembly. When the load of core level more than or equal to the load of boost motor, fixed journal stirrup passes through the screw with the core level and links to each other, and the ball bolt passes through the screw with the core level and links to each other, and the section of thick bamboo wall of boost motor has first mounting hole and second mounting hole, and rotatory journal stirrup is worn to establish in first mounting hole and is linked to each other with the section of thick bamboo wall of boost motor, and second coupling assembling wears to establish in the second mounting hole, and ball bowl 6 links to each other with boost motor and ball bolt. When the load of the booster is more than or equal to the load of the core level, the fixed support lug is connected with the booster through a screw, the spherical bolt 5 is connected with the booster through a screw, the wall of the core level is provided with a first mounting hole and a second mounting hole, the rotary support lug is arranged in the first mounting hole in a penetrating manner and is connected with the wall of the core level, the second connecting component is arranged in the second mounting hole in a penetrating manner, and the ball bowl is connected with the core level and the spherical bolt.
By applying the technical scheme of the embodiment, the first mounting hole and the second mounting hole are formed for the smaller loads of the core stage and the booster, and the part needing to be provided with the hole in the first connecting assembly and the part needing to be provided with the hole in the second connecting assembly are mounted, so that the stress strain influence on the bound rocket wind tunnel scale model assembly is smaller, and the space structure of the bound rocket wind tunnel scale model assembly is fully utilized. The technical scheme of the embodiment effectively solves the problem that the influence on stress and strain is large when the wind load test of the rocket is bundled in the simulation in the prior art. The core stage, also called the center stage 100, is shown in fig. 4, and the booster, also referred to as the booster 200, is shown in fig. 4. The cylinder section 3 with the greater cross-sectional load and the cylinder section 4 with the smaller cross-sectional load are shown in fig. 1 and 2.
In the technical scheme of the embodiment, the spherical bolt comprises a screw rod and a connecting disc, the connecting disc is positioned in the middle of the screw rod, a central shaft of the screw rod is coincided with a central shaft of the connecting disc, and a spherical concave surface is arranged on one side, facing the first end of the ball head connection simulation assembly, of the connecting disc; the ball bowl comprises a ball bowl body and a connecting part, the connecting part is connected to the ball bowl body, the ball bowl body and the spherical concave surface are matched and at least partially positioned in the spherical concave surface, a through hole is formed in the center of the ball bowl body, and the screw rod penetrates through the through hole; the first end of the screw is connected to the nut and/or the second end of the screw is connected to the nut.
In the technical scheme of this embodiment, the sunken direction of ball bowl body is by the big direction that loads are little to load, and the outer wall face of sphere main part is with the internal wall face looks adaptation of spherical concave surface. Under the condition of the same load, the concave direction of the ball bowl body can be randomly reversed.
In the technical scheme of this embodiment, the ball head connection simulation subassembly still includes the sphere cushion, and the sphere cushion is the sphere with the internal face matched with surface of ball bowl body, and the sphere cushion has the through-hole, and the screw rod passes the through-hole, and the center pin of screw rod and the coaxial setting of center pin of sphere cushion, the surface of one side of the principle sphere of sphere cushion is the plane. The ball stud 10 in fig. 4 corresponds to the ball stud 5 in fig. 2, and the ball socket 20 in fig. 4 corresponds to the ball socket 6 in fig. 2. Also shown in fig. 4 are the spherical spacer 30, the inner spacer 60, the outer spacer 70, the lateral outer spacer 50, and the lateral inner spacer 40.
In the technical scheme of this embodiment, the screw rod includes the toper section, and the diameter of toper section is from small to large in the direction that the load is big to the load is little, and the through-hole is the toper through-hole that suits with the toper section, and the toper section is located the toper through-hole.
In the technical scheme of this embodiment, the second coupling assembling still includes interior cushion, and interior cushion sets up between the great internal wall face of load and connecting portion.
In the technical scheme of this embodiment, the second coupling assembling still includes outer cushion, and outer cushion sets up at the big outer wall surface of load, and the screw passes outer cushion, the big casing of load, interior cushion and connecting portion in proper order and fixes.
In the technical scheme of this embodiment, the second connection assembly further includes a lateral outer pad, and the lateral outer pad is squeezed between the connection disc and the outer wall surface of the shell with a small load.
In the technical scheme of this embodiment, the second coupling assembling still includes the inside cushion of side, and the second countersunk head bolt passes interior cushion, the little casing of load, the outside cushion of side and connection pad threaded connection in proper order.
As can be seen from the above description, when designing a wind tunnel scale model for two types of bound rockets, namely, a core-stage support and a boost support, since the space between the core stage of the scale model and the booster is limited, in order to assemble a swivel brace and a double-shaft joint structure assembly, a ball bolt and a ball bowl structure assembly, it is necessary to design an opening in the bound connection region of the scale model barrel section. In order to realize reliable connection of a core-level barrel section and a boosting barrel section of a scale model at low cost and ensure safe and smooth wind load test of the scale model, the arrangement schemes of a rotary support lug, a double-shaft joint structure assembly, a spherical bolt and a ball bowl structure assembly in the wind tunnel scale model are respectively designed for two types of bound rockets.
The booster of the bound rocket is connected with the core stage through a binding structure, wherein the Z-shaped three-connecting-rod structure transmits radial force, annular force and axial torque; the ball head structure only transmits forces in three directions and does not transmit moment. The scaling model is structurally designed according to a real force transmission form, and considering that the space between the core level of the scaling model and the booster is limited, the Z-shaped three-connecting-rod structure is designed into a rotating lug and double-shaft joint structure form with compact space, so that the axial translational freedom degree and the other two-direction rotational freedom degree of the booster are released; the ball head structure adopts a spherical bolt and a ball bowl structure, and can meet the requirements of force transmission and torque non-transmission. Because each section is a cylindrical section structure, an inner cushion block, an outer cushion block and a connecting plate are required to be arranged in the binding connection area, the mounting surface is changed from a curved surface to a plane, the binding structure is convenient to connect, and in addition, the design requirement of hole reinforcement can be met.
From the structural forms of the two sides of the binding joint simulation device, the rotary lug and the fixed lug side of the double-shaft joint structure assembly have better structural continuity, only have a plurality of screw unthreaded holes, are reinforced by the inner cushion blocks and the outer cushion blocks, and have better bearing performance, so that the fixed lug side is preferably positioned on a cylinder section with larger cross-sectional load, and the force transmission path of the rotary lug side structure is bent and has poorer bearing performance, so that the rotary lug side is preferably positioned on a cylinder section with smaller cross-sectional load; the ball bolt side of ball bolt and ball bowl structure subassembly, the continuity of structure is better, only has a plurality of screw unthreaded hole to have the enhancement of inside and outside cushion, bearing capacity is better, therefore the ball bolt side should be located the great section of thick bamboo section of cross-sectional load, and ball bowl side structure has big trompil, though there is the enhancement of inside and outside cushion, but bearing capacity is still relatively poor, therefore the ball bowl side should be located the less section of thick bamboo section of cross-sectional load.
For the booster supporting binding rocket, the load of the section of the core-stage cylinder section is larger at the binding point on the booster supporting binding rocket, and the load of the section of the boosting cylinder section is smaller; at the lower binding point, the section load of the core-stage cylinder section is smaller, and the section load of the boosting cylinder section is larger. Therefore, the booster supports the bound rocket, a fixed support lug or a spherical bolt is arranged on the core stage barrel section at the upper binding point, and a rotary support lug or a spherical bowl is arranged on the boosting barrel section at the corresponding upper binding point; the core-level barrel section at the lower binding point is provided with a ball bowl or a rotary support lug, and the boosting barrel section at the corresponding lower binding point is provided with a ball bolt or a fixed support lug.
For the core-stage supporting binding rocket, the section load of the core-stage barrel section is larger at the binding point, and the section load of the boosting barrel section is smaller; at the lower binding point, the section load of the core-stage cylinder section is larger, and the section load of the boosting cylinder section is smaller. Therefore, the core stage supports the binding rocket, the core stage barrel section at the upper binding point is provided with a fixed support lug or a spherical bolt, and the boosting barrel section at the corresponding upper binding point is provided with a rotary support lug or a spherical bowl; spherical bolts or fixed support lugs should be arranged on the core-level barrel sections at the lower binding points, and spherical bowls or rotary support lugs should be arranged on the boosting barrel sections at the corresponding lower binding points.
The arrangement scheme of the binding simulation structure in the bound rocket wind tunnel scale model provided by the embodiment defines the assembly mode of the rotary support lug, the double-shaft joint structure assembly, the spherical bolt and the ball bowl structure assembly in the two types of bound rocket wind tunnel scale models of the boosting support and the core-level support, ensures that the bound rocket wind tunnel scale model meets the strength requirement with lower cost, realizes the reliable connection of the booster of the bound rocket scale model and the core level, and ensures that the wind tunnel blowing test is safely and smoothly carried out and the test parameters are accurately obtained.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A wind tunnel scale model component of a bundled rocket is characterized by comprising:
a core stage;
a booster;
the first connecting assembly comprises a fixed lug, a connecting shaft structure and a rotating lug, and the connecting shaft structure is connected between the fixed lug and the rotating lug;
a second connection assembly comprising a ball stud and a ball bowl;
the core stage and the booster are connected through the first connecting assembly and the second connecting assembly;
when the load of the core stage is more than or equal to the load of the booster, the fixed support lug is connected with the core stage through a screw, the spherical bolt is connected with the core stage through a screw, the cylinder wall of the booster is provided with a first mounting hole and a second mounting hole, the rotary support lug is arranged in the first mounting hole in a penetrating manner and is connected with the cylinder wall of the booster, the second connecting assembly is arranged in the second mounting hole in a penetrating manner, and the ball bowl is connected with the booster and the spherical bolt;
when the load of the booster is larger than or equal to the load of the core level, the fixed support lug is connected with the booster through a screw, the spherical bolt is connected with the booster through a screw, the wall of the core level cylinder is provided with a first mounting hole and a second mounting hole, the rotary support lug is arranged in the first mounting hole in a penetrating mode and is connected with the wall of the core level cylinder, the second connecting assembly is arranged in the second mounting hole in a penetrating mode, and the ball bowl is connected with the core level and the spherical bolt.
2. The bundled rocket wind tunnel scale model assembly according to claim 1, wherein the spherical bolt comprises a screw and a connecting disc, the connecting disc is located in the middle of the screw, the central axis of the screw is coincident with the central axis of the connecting disc, and a spherical concave surface is arranged on one side of the connecting disc, which faces the first end of the ball head connection simulation assembly;
the ball bowl comprises a ball bowl body and a connecting part, the connecting part is connected to the ball bowl body, the ball bowl body and the spherical concave surface are matched and at least partially positioned in the spherical concave surface, a through hole is formed in the center of the ball bowl body, and the screw rod is arranged in the through hole in a penetrating mode;
the first end of the screw rod is connected with the nut and/or the second end of the screw rod is connected with the nut.
3. The wind tunnel scale model assembly for a bundled rocket as claimed in claim 2, wherein the concave direction of the ball bowl body is from large load to small load, and the outer wall surface of the spherical main body is matched with the inner wall surface of the spherical concave surface.
4. The wind tunnel scale model assembly for a bundled rocket according to claim 3, wherein the ball head connection simulation assembly further comprises a spherical cushion block, the surface of the spherical cushion block matched with the inner wall surface of the ball bowl body is a spherical surface, the spherical cushion block is provided with a through hole, the screw rod penetrates through the through hole, the central axis of the screw rod and the central axis of the spherical cushion block are coaxially arranged, and the surface of one side of the spherical surface is a plane according to the principle of the spherical cushion block.
5. The bundled rocket wind tunnel scale model assembly according to claim 4, wherein the screw comprises a conical section, the diameter of the conical section is from small to large in the direction from large load to small load, the through hole is a conical through hole matched with the conical section, and the conical section is positioned in the conical through hole.
6. The bundled rocket wind tunnel scale model assembly of claim 2, wherein said second connecting assembly further comprises an inner spacer, said inner spacer being disposed between said inner wall surface with large load and said connecting portion.
7. The bundled rocket wind tunnel scale model assembly according to claim 6, wherein the second connecting assembly further comprises an outer cushion block, the outer cushion block is arranged on the outer wall surface with large load, and screws sequentially penetrate through the outer cushion block, the shell with large load, the inner cushion block and the connecting part to be fixed.
8. The bundled rocket wind tunnel scale model assembly of claim 2, wherein said second connection assembly further comprises a lateral outer pad compressed between said connection pad and an outer wall surface of said low-load housing.
9. The bundled rocket wind tunnel scale model assembly according to claim 8, wherein the second connecting assembly further comprises a side-in cushion block, and a second countersunk bolt sequentially penetrates through the side-in cushion block, the shell with small load, the side-out cushion block and the connecting disc for threaded connection.
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| CN202110965510.2A CN113820095B (en) | 2021-08-23 | 2021-08-23 | Binding rocket wind tunnel scaling model assembly |
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| CN202110965510.2A CN113820095B (en) | 2021-08-23 | 2021-08-23 | Binding rocket wind tunnel scaling model assembly |
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|---|---|---|---|---|
| CN116296237A (en) * | 2023-05-18 | 2023-06-23 | 中国航空工业集团公司哈尔滨空气动力研究所 | Vertical wind load test method for large carrier rocket in low-speed wind tunnel |
| CN116296237B (en) * | 2023-05-18 | 2023-07-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | Vertical wind load test method for large carrier rocket in low-speed wind tunnel |
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| CN113820095B (en) | 2023-05-23 |
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