CN112223141B - Centre gripping frock with adjustable centrifugation is fired experiment - Google Patents
Centre gripping frock with adjustable centrifugation is fired experiment Download PDFInfo
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- CN112223141B CN112223141B CN202010993182.2A CN202010993182A CN112223141B CN 112223141 B CN112223141 B CN 112223141B CN 202010993182 A CN202010993182 A CN 202010993182A CN 112223141 B CN112223141 B CN 112223141B
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- shell
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- ignition test
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses an adjustable clamping tool for a centrifugal ignition test, which is characterized in that: comprises a shell, a sheath, a lateral adjusting bolt, an axial adjusting piece, a pressing screw, an adjusting pad and an electric pulling pin. The centrifugal ignition test device can clamp and fix centrifugal ignition test products with different diameters and heights through the combination of the lateral adjusting bolt, the sheath, the axial adjusting piece and the adjusting pad. All the centrifugal clamping test tools can be unified, and the centrifugal clamping tools can be used repeatedly. The explosion-proof shell is simple in structure, easy to install and wide in adaptability, and the shell is provided with the end face through holes and the side face through holes, so that explosion can be effectively discharged, and the shell is prevented from being damaged.
Description
Technical Field
The invention belongs to the field of centrifugal ignition test tools, and particularly relates to an adjustable clamping tool for a centrifugal ignition test.
Background
In fuse products, an inertia fuse designed by using inertia overload is often used, and the relief overload of the inertia fuse is related to the inertia fuse itself, the resistance of an inertia spring, the positive pressure applied to the inertia fuse, the friction force of the inertia fuse, and the like. Thus, the centrifuge overload value for each product can vary. To ensure that a product is 100% unsecured at a specified overload value, a centrifuge is typically used to perform a centrifuge arming test or a centrifuge firing test is performed after a batch is produced and several batches are drawn.
In performing the above tests, the products are typically clamped to the centrifuge, since the diameter and height of each product varies and the relief value for the product design varies. Therefore, the centrifugal clamping tools of the products are different and difficult to unify, and because the centrifugal ignition tests are carried out, the test products usually have detonation output, and the centrifugal clamping tools are mostly disposable products.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements in the prior art, the invention provides the adjustable clamping tool for the centrifugal ignition test, which can unify all the centrifugal clamping test tools and can be repeatedly used. The centrifugal ignition test device is simple in structure and easy to install, and centrifugal ignition test articles with different diameters and heights can be clamped and fixed through the combination of the lateral adjusting bolt, the sheath, the axial adjusting piece and the adjusting pad. The adaptability is wider, and the casing sets up terminal surface through-hole and many places side through-hole, can effectively let out explode, avoids the casing to damage.
In order to achieve the above object, according to one aspect of the present invention, there is provided an adjustable clamping fixture for centrifugal ignition test, comprising: comprises a shell, a sheath, a lateral adjusting bolt, an axial adjusting piece, a pressing screw, an adjusting pad and an electric pulling pin;
the shell is fixed on a centrifugal test bed and is a rectangular body with a cylindrical hole formed inside, a centrifugal ignition test product is arranged in the cylindrical hole of the shell, a threaded hole is formed in the axial front end of the cylindrical hole, the pressure screw is provided with a seal, a explosion venting hole is formed in the axial rear end direction of the cylindrical hole, screw holes are formed in two sides of the cylindrical hole of the shell, and the lateral adjusting bolt is arranged on the two sides of the cylindrical hole of the shell;
one side of the sheath is an arc-shaped part, the other side of the sheath is provided with a bulge part, a blind hole is formed in the bulge part, the arc-shaped part of the sheath is arranged between the inner wall of the cylindrical hole of the shell and a built-in centrifugal ignition test product, and the bulge of the sheath is inserted into the screw hole of the shell to achieve the purpose of laterally clamping and fixing the centrifugal ignition test product;
the lateral adjusting bolt is a stepped cylinder consisting of a rear-end large cylinder and a front-end small cylinder, and the rear-end large cylinder of the lateral adjusting bolt is provided with threads and can be screwed in the screw hole of the shell in a rotating manner; the small cylinder at the front end of the lateral adjusting bolt extends into the blind hole of the convex part of the sheath and abuts against the arc-shaped part of the sheath, and the large cylinder at the rear end of the lateral adjusting bolt is adjusted by rotating to achieve the purpose of laterally compressing the centrifugal ignition test product;
the axial adjusting piece is a stepped cylinder consisting of a front-end large cylinder and a rear-end small cylinder, and the rear-end small cylinder of the axial adjusting piece is provided with threads and can be screwed on the pressing screw in a rotating manner; the large front end cylinder of the axial adjusting piece is arranged in the cylindrical hole of the shell and between the pressing screw and the centrifugal ignition test product, abuts against the centrifugal ignition test product, and the small rear end cylinder of the axial adjusting piece is adjusted by rotating to achieve the purpose of axially pressing the centrifugal ignition test product;
the adjusting pad is arranged in the cylindrical hole of the shell, at the axial rear end, between the inner wall of the shell and the centrifugal ignition test product and used for axially adjusting the centrifugal ignition test product;
the electric pulling pin is arranged on the shell, and the output end of the electric pulling pin is used for locking the inertia safety piece of the clamped centrifugal ignition test article.
Preferably, the housing is a metal material.
Preferably, the outer wall of the housing has a lug, by means of which the housing is fixed on the centrifugal test stand.
Preferably, the explosion venting hole of the housing includes a through hole opened on an end surface of the cylindrical hole of the housing at the axial rear end.
Preferably, the explosion venting hole of the housing further includes a through hole opened in a sidewall of an axial rear end of the cylindrical hole of the housing.
Preferably, the cylindrical hole of the housing has three through holes on the side wall at the rear end in the axial direction, and the three through holes are respectively arranged on three side surfaces except the fixing surface with the centrifugal test stand.
Preferably, the sheath is a polyethylene terephthalate material molded.
Preferably, the outer diameter of the circular arc-shaped portion of the sheath is equal to the inner diameter of the cylindrical hole of the housing, and the sector angle of the circular arc-shaped portion is 60-150 °.
Preferably, the circular arc shaped portion of the sheath has a sector angle of 60 °.
Preferably, the adjusting pad is a rubber pad with the thickness of 1 mm-2 mm, a plurality of adjusting pads are arranged in a mutually overlapped mode, and the purpose of axially compressing the centrifugal ignition test product is achieved by adjusting the number of the overlapped pads.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the adjustable clamping tool for the centrifugal ignition test can unify all the centrifugal clamping test tools, and the centrifugal clamping tool can be repeatedly used.
2. The adjustable clamping tool for the centrifugal ignition test is simple in structure and easy to install, and centrifugal ignition test products with different diameters and heights can be clamped and fixed through the combination of the lateral adjusting bolt, the sheath, the axial adjusting piece and the adjusting pad. The adaptability is wider, and the casing sets up terminal surface through-hole and many places side through-hole, can effectively let out explode, avoids the casing to damage.
Drawings
FIG. 1 is a schematic structural diagram of an external shape of an adjustable clamping tool for a centrifugal ignition test according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of an adjustable clamping fixture for centrifugal ignition test according to an embodiment of the present invention (schematic cross-sectional view at B-B in FIG. 3);
fig. 3 is a schematic cross-sectional view taken at a-a in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1 to 3, the present invention provides an adjustable clamping fixture for centrifugal ignition test, which mainly comprises a housing 2, a sheath 3, a lateral adjusting bolt 4, an axial adjusting member 5, a pressing screw 6, an adjusting pad 7 and an electrical pulling pin 8.
As shown in fig. 1-3, the casing 2 is made of a metal material, and is composed of a rectangular body with a cylindrical hole formed therein and two support lugs on an outer wall, the two support lugs are symmetrically and fixedly connected to two sides of the rectangular body, and the two support lugs are respectively provided with a through hole for fixing the casing on a centrifugal test bed through a screw. The centrifugal ignition test article 1 is arranged in a cylindrical hole of the shell 2, a threaded hole is formed in the axial front end of the cylindrical hole, the pressure screw 6 with a seal is installed in the cylindrical hole, and an explosion venting hole is formed in the axial rear end direction of the cylindrical hole; the explosion venting hole of the housing 2 includes a through hole opened on an end surface of the cylindrical hole of the housing 2 at the axial rear end. The explosion venting hole of the shell 2 further comprises a through hole formed in the side wall of the axial rear end of the cylindrical hole of the shell 2. The through holes on the side wall of the rear end of the cylindrical hole of the shell 2 are provided with three positions which are respectively arranged on three side surfaces except the fixing surface with the centrifugal test bed. And screw holes are formed in two sides of the cylindrical hole of the shell 2, and the lateral adjusting bolt 4 is installed on the two sides of the cylindrical hole.
As shown in fig. 2-3, the sheath 3 is made of polyethylene terephthalate by molding, because the polyethylene terephthalate has good deformation, and can achieve the purpose of holding the centrifugal ignition test article well. One side of the sheath 3 is an arc-shaped part, the other side of the sheath is provided with a protruding part, a blind hole is formed in the protruding part, the arc-shaped part of the sheath 3 is arranged between the inner wall of the cylindrical hole of the shell 2 and the built-in centrifugal ignition test product 1, the protrusion of the sheath 3 is inserted into the screw hole of the shell 2, and the two sheaths 3 are symmetrically placed in the shell 2, so that the purpose of laterally clamping and fixing the centrifugal ignition test product 1 is achieved. The outer diameter of the circular arc-shaped part of the sheath 3 is equal to the inner diameter of the cylindrical hole of the shell 2, and the sector angle of the circular arc-shaped part is 60-150 degrees. Preferably, the circular arc-shaped portion of the sheath 3 has a sector angle of 60 °.
As shown in fig. 1-2, the lateral adjusting bolt 4 is a stepped cylinder composed of a rear end large cylinder and a front end small cylinder, the rear end large cylinder of the lateral adjusting bolt 4 is provided with a thread, and the lateral adjusting bolt can be screwed into a screw hole of the housing 2; the small cylinder at the front end of the lateral adjusting bolt 4 extends into the blind hole of the protruding part of the sheath 3 and abuts against the arc-shaped part of the sheath 3, and the large cylinder at the rear end of the lateral adjusting bolt 4 is adjusted by rotating to achieve the purpose of laterally compressing the centrifugal ignition test article 1.
As shown in fig. 1 and 3, the axial adjusting member 5 is a stepped cylinder composed of a front large cylinder and a rear small cylinder, and the rear small cylinder of the axial adjusting member 5 has a thread thereon and is screwed on the pressing screw 6; the large front end cylinder of the axial adjusting piece 5 is arranged in a cylinder hole of the shell 2, the pressing screw 6 is abutted to the centrifugal ignition test article 1, and the small rear end cylinder of the axial adjusting piece 5 is adjusted by rotating to achieve the purpose of axially pressing the centrifugal ignition test article 1.
As shown in fig. 3, the adjusting pad 7 is disposed in the cylindrical hole of the casing 2 at the axial rear end, between the inner wall of the casing and the centrifugal ignition test product 1, and is used for axially adjusting the centrifugal ignition test product 1; the adjusting pad 7 is a rubber pad with the thickness of 1 mm-2 mm, a plurality of adjusting pads 7 are arranged in a mutually overlapped mode, and the purpose of axially compressing the centrifugal ignition test product 1 is achieved by adjusting the number of the overlapped pads.
As shown in fig. 1 to 3, the electrical drawing pin 8 is disposed on the housing 2, and the output end thereof is used for locking the inertia safety member of the clamped centrifugal ignition test piece 1. The arrangement of the electric pull pin can be used for detecting whether the centrifugal ignition test article is relieved of safety under any fixed overload value condition, when the centrifugal ignition test article is used, the electric pull pin locks the inertia safety piece of the centrifugal ignition test article, when the centrifugal machine reaches the set overload, the electric pull pin is electrified to act, the constraint on the inertia safety piece of the centrifugal ignition test article is relieved, and the inertia safety piece acts under the rated overload condition.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
1. the adjustable clamping tool for the centrifugal ignition test can unify all the centrifugal clamping test tools, and the centrifugal clamping tool can be repeatedly used.
2. The adjustable clamping tool for the centrifugal ignition test is simple in structure and easy to install, and centrifugal ignition test products with different diameters and heights can be clamped and fixed through the combination of the lateral adjusting bolt, the sheath, the axial adjusting piece and the adjusting pad. The adaptability is wider, and the casing sets up terminal surface through-hole and many places side through-hole, can effectively let out explode, avoids the casing to damage.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a centre gripping frock with adjustable centrifugation is fired test which characterized in that: comprises a shell (2), a sheath (3), a lateral adjusting bolt (4), an axial adjusting piece (5), a pressing screw (6), an adjusting pad (7) and an electric pulling pin (8);
the shell (2) is fixed on a centrifugal test bed and is a rectangular body with a cylindrical hole formed inside, a centrifugal ignition test product (1) is arranged in the cylindrical hole of the shell (2), a threaded hole is formed in the axial front end of the cylindrical hole, a sealed pressing screw (6) is installed on the threaded hole, a explosion venting hole is formed in the axial rear end direction of the cylindrical hole, screw holes are formed in two sides of the cylindrical hole of the shell (2), and the lateral adjusting bolt (4) is installed on the two sides of the cylindrical hole of the shell;
one side of the sheath (3) is an arc-shaped part, the other side of the sheath is provided with a bulge part, a blind hole is formed in the bulge part, the arc-shaped part of the sheath (3) is arranged between the inner wall of the cylindrical hole of the shell (2) and the built-in centrifugal ignition test product (1), and the bulge of the sheath (3) is inserted into the screw hole of the shell (2) so as to achieve the purpose of laterally clamping and fixing the centrifugal ignition test product (1);
the lateral adjusting bolt (4) is a stepped cylinder consisting of a rear-end large cylinder and a front-end small cylinder, and the rear-end large cylinder of the lateral adjusting bolt (4) is provided with threads and can be screwed in a screw hole of the shell (2) in a rotating manner; the small cylinder at the front end of the lateral adjusting bolt (4) extends into the blind hole of the convex part of the sheath (3) and abuts against the arc-shaped part of the sheath (3), and the large cylinder at the rear end of the lateral adjusting bolt (4) is adjusted by rotating to achieve the purpose of laterally compressing the centrifugal ignition test article (1);
the axial adjusting piece (5) is a stepped cylinder consisting of a front-end large cylinder and a rear-end small cylinder, and the rear-end small cylinder of the axial adjusting piece (5) is provided with threads and can be screwed on the pressing screw (6) in a rotating manner; the large front end cylinder of the axial adjusting piece (5) is arranged in a cylindrical hole of the shell (2) and between the pressing screw (6) and the centrifugal ignition test article (1) and is abutted against the centrifugal ignition test article (1), and the small rear end cylinder of the axial adjusting piece (5) is adjusted by rotating to achieve the purpose of axially pressing the centrifugal ignition test article (1);
the adjusting pad (7) is arranged in a cylindrical hole of the shell (2) and at the axial rear end, and is arranged between the inner wall of the shell and the centrifugal ignition test product (1) and used for axially adjusting the centrifugal ignition test product (1);
the electrical drawing pin (8) is arranged on the shell (2), and the output end of the electrical drawing pin is used for locking the inertia safety piece of the clamped centrifugal ignition test article (1).
2. The adjustable clamping tool for the centrifugal ignition test according to claim 1, wherein:
the shell (2) is made of metal materials.
3. The adjustable clamping tool for the centrifugal ignition test according to claim 2, wherein:
the outer wall of the shell (2) is provided with a support lug, and the shell (2) is fixed on a centrifugal test bed through the support lug.
4. The adjustable clamping tool for the centrifugal ignition test according to claim 1, wherein:
the explosion venting hole of the shell (2) comprises a through hole which is formed in the end face of the axial rear end of the cylindrical hole of the shell (2).
5. The adjustable clamping tool for the centrifugal ignition test according to claim 4, wherein:
the explosion venting hole of the shell (2) further comprises a through hole formed in the side wall of the axial rear end of the cylindrical hole of the shell (2).
6. The adjustable clamping tool for the centrifugal ignition test according to claim 5, wherein:
the through holes on the side wall of the rear end of the cylindrical hole of the shell (2) are provided with three positions which are respectively arranged on three side surfaces except the fixing surface with the centrifugal test bed.
7. The adjustable clamping tool for the centrifugal ignition test according to claim 1, wherein:
the sheath (3) is made of polyethylene terephthalate material through molding.
8. The adjustable clamping tool for the centrifugal ignition test according to claim 7, wherein:
the outer diameter of the circular arc-shaped part of the sheath (3) is equal to the inner diameter of the cylindrical hole of the shell (2), and the sector angle of the circular arc-shaped part is 60-150 degrees.
9. The adjustable clamping tool for the centrifugal ignition test according to claim 8, wherein:
the arc-shaped part of the sheath (3) has a sector angle of 60 deg.
10. The adjustable clamping tool for the centrifugal ignition test according to claim 1, wherein:
the adjusting pad (7) is a rubber pad with the thickness of 1 mm-2 mm, the adjusting pads (7) are arranged in a mutually overlapped mode, and the purpose that the centrifugal ignition test article (1) is axially compressed is achieved by adjusting the number of overlapped pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993182.2A CN112223141B (en) | 2020-09-21 | 2020-09-21 | Centre gripping frock with adjustable centrifugation is fired experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993182.2A CN112223141B (en) | 2020-09-21 | 2020-09-21 | Centre gripping frock with adjustable centrifugation is fired experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112223141A CN112223141A (en) | 2021-01-15 |
| CN112223141B true CN112223141B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010993182.2A Active CN112223141B (en) | 2020-09-21 | 2020-09-21 | Centre gripping frock with adjustable centrifugation is fired experiment |
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| Country | Link |
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| CN (1) | CN112223141B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113427416B (en) * | 2021-06-10 | 2022-05-10 | 江苏威马悦达智能装备有限公司 | Connecting rod processing micromatic setting suitable for different specifications |
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|---|---|---|---|---|
| GB471597A (en) * | 1936-03-11 | 1937-09-08 | British Insulated Cables Ltd | An improved form of carrier for electric fuses of the cartridge type |
| GB1484897A (en) * | 1973-10-23 | 1977-09-08 | Magneti Marelli Spa | Ignition contact-breaker particularly for internal combustion engines |
| CN202814711U (en) * | 2012-07-30 | 2013-03-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile ignition switch test device capable of preventing overload |
| CN104501668A (en) * | 2014-12-26 | 2015-04-08 | 中国人民解放军总装备部军械技术研究所 | Fuse linear inertia safety simulating releasing device |
| CN204574964U (en) * | 2014-12-26 | 2015-08-19 | 中国人民解放军总装备部军械技术研究所 | A kind of recoil safety fuze simulation testing instrument |
| CN106123711A (en) * | 2016-08-12 | 2016-11-16 | 西安捷盛电子技术有限责任公司 | A kind of fuse solution protects assay device |
| CN110145410A (en) * | 2019-06-06 | 2019-08-20 | 北京理工大学 | A kind of end combustion powder charge solid propellant rocket for overloading experiment |
-
2020
- 2020-09-21 CN CN202010993182.2A patent/CN112223141B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB471597A (en) * | 1936-03-11 | 1937-09-08 | British Insulated Cables Ltd | An improved form of carrier for electric fuses of the cartridge type |
| GB1484897A (en) * | 1973-10-23 | 1977-09-08 | Magneti Marelli Spa | Ignition contact-breaker particularly for internal combustion engines |
| CN202814711U (en) * | 2012-07-30 | 2013-03-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile ignition switch test device capable of preventing overload |
| CN104501668A (en) * | 2014-12-26 | 2015-04-08 | 中国人民解放军总装备部军械技术研究所 | Fuse linear inertia safety simulating releasing device |
| CN204574964U (en) * | 2014-12-26 | 2015-08-19 | 中国人民解放军总装备部军械技术研究所 | A kind of recoil safety fuze simulation testing instrument |
| CN106123711A (en) * | 2016-08-12 | 2016-11-16 | 西安捷盛电子技术有限责任公司 | A kind of fuse solution protects assay device |
| CN110145410A (en) * | 2019-06-06 | 2019-08-20 | 北京理工大学 | A kind of end combustion powder charge solid propellant rocket for overloading experiment |
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| Publication number | Publication date |
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| CN112223141A (en) | 2021-01-15 |
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