CN112523901A - Medicine device is tied up in test of electrically conductive solid propellant burning rate of residue - Google Patents
Medicine device is tied up in test of electrically conductive solid propellant burning rate of residue Download PDFInfo
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- CN112523901A CN112523901A CN202011463130.0A CN202011463130A CN112523901A CN 112523901 A CN112523901 A CN 112523901A CN 202011463130 A CN202011463130 A CN 202011463130A CN 112523901 A CN112523901 A CN 112523901A
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- nut
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- medicine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/24—Charging rocket engines with solid propellants; Methods or apparatus specially adapted for working solid propellant charges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/34—Casings; Combustion chambers; Liners thereof
- F02K9/343—Joints, connections, seals therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/95—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by starting or ignition means or arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/97—Rocket nozzles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a residue conductive solid propellant burning speed test medicine binding device, wherein the medicine binding device comprises: the first plug, the second plug, the third plug, the fourth plug, the base, the medicine strip socket, the first transition component, the second transition component, the third transition component, the fourth transition component, the first strut nut, the second strut nut, the third strut nut, the fourth strut nut, the first strut, the second strut, the third strut, the fourth strut and the spring piece; the first transition assembly comprises a first transition nut and a second fastening nut, the second transition assembly comprises a second transition nut and a second fastening nut, the third transition assembly comprises a third transition nut and a third fastening nut, and the fourth transition assembly comprises a fourth transition nut and a fourth fastening nut. The medicine binding device disclosed by the invention is reliable in performance and simple in structure.
Description
Technical Field
The invention belongs to the technical field of solid propellant burning rate test, and particularly relates to a residue conductive solid propellant burning rate test binding agent.
Background
The medicine binding device is an important component of a solid propellant static burning rate (target line method) test, and mainly has the functions of fixing the propellant medicine strips, connecting the ignition line, the first target line and the second target line which penetrate through the propellant medicine strips to the control circuit through the medicine binding device, realizing ignition and target line timing of the propellant medicine strips, and further calculating to obtain the propellant burning rate. However, as tactical missile weapon systems develop in the directions of high performance, integration, intellectualization and actual combat, higher requirements are put forward on the performance of solid propellants, so that the increase of the contents of ammonium perchlorate and aluminum powder is imperative. Due to the increase of the solid content in the propellant and the broadening of the pressure of the test environment, abnormal data often appear in the solid propellant in the firing rate test of the target line method: (1) under the condition of low pressure, residues with complete shapes are left after the propellant drug strips are combusted, the residues contain conductive substances, the first target wire and the second target wire are contacted with the propellant residues after being fused, and a control circuit cannot normally time; (2) under the condition of low pressure, high-temperature residues generated by propellant combustion fall to the bottom of a propellant explosive bar under the blowing of flames on a combustion end face, and the explosive bar is deflagrated due to the fact that a coating layer is burnt through, so that data abnormity is caused; (3) the target line passes propellant medicine strip, and both ends are connected respectively on tying up the medicine device, because the target line both ends are not at a straight line, the medicine strip receives the power of certain degree on horizontal, and the target line fires the back medicine strip and takes place shake and slope, arouses the non-terminal surface burning of propellant medicine strip.
In the prior art, an anti-ablation round bakelite sheet made of insulating bakelite materials is arranged in a combustion chamber and penetrates through six binding posts arranged on a base, and is arranged between two target lines, so that abnormal interruption caused by falling of hot combustion products in the test is avoided. The invention solves the problems of accidental fusing of target lines and pipeline blockage, but does not consider the problem of deflagration caused by residues falling to the bottom of a medicine strip, and in addition, the device cannot solve the problem of residue conduction.
The prior art also discloses a solid propellant containing perchloric acid and aluminum powder, and the electric conduction phenomenon appears in the process of linear constant-pressure burning rate test, which often causes the test to fail. After the conduction principle is researched, the resistance value of the first target and the second target which are connected is properly changed in a timing system, so that the success rate of the burning rate test can be more than 90%. The technology amplifies the sensitivity of the timer by increasing the sliding resistor with adjustable resistance, and simultaneously provides higher requirements for the consistency of the medicine binding device, the target line body resistor and the contact resistance of the target line body resistor, and is not suitable for testing mass products.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the medicine binding device is reliable and simple and is suitable for testing the burning rate of the residue conductive solid propellant.
In order to solve the technical problem, the invention discloses a residue conductive solid propellant burning speed test medicine binding device, wherein the medicine binding device comprises: the first plug, the second plug, the third plug, the fourth plug, the base, the medicine strip socket, the first transition component, the second transition component, the third transition component, the fourth transition component, the first strut nut, the second strut nut, the third strut nut, the fourth strut nut, the first strut, the second strut, the third strut, the fourth strut and the spring piece; the first transition assembly comprises a first transition nut and a second fastening nut, the second transition assembly comprises a second transition nut and a second fastening nut, the third transition assembly comprises a third transition nut and a third fastening nut, and the fourth transition assembly comprises a fourth transition nut and a fourth fastening nut;
the first fastening nut fixes the first transition nut on the base, the second fastening nut fixes the second transition nut on the base, the third fastening nut fixes the third transition nut on the base, the fourth fastening nut fixes the fourth transition nut on the base, the first transition nut fixes the first plug and the first supporting rod through threads, the second transition nut fixes the second plug and the second supporting rod through threads, the third transition nut fixes the third plug and the third supporting rod through threads, and the fourth transition nut fixes the fourth plug and the fourth supporting rod through threads; the medicine strip socket is fixed on the base through threads, the first support rod nut is fixed on the first support rod through a screw, and the second support rod nut, the third support rod nut and the fourth support rod nut are respectively fixed on the second support rod, the third support rod and the fourth support rod through screws; the ignition wire and the target wire are fixed through the tightness of each support rod nut, and the spring piece is fixed on the first support rod nut through a screw; the first plug, the second plug, the third plug and the fourth plug are used for connecting a control circuit.
Optionally, the first plug, the second plug, the third plug and the fourth plug are all nickel-plated pure copper banana plugs.
Optionally, the base main body is made of insulating rubber wood, and the surface of the main body is provided with a reinforcing sheet.
Optionally, the medicine strip socket inner chamber comprises two parts, the inner chamber bottom is the cylindrical aperture that the diameter slightly is greater than propellant medicine strip, the inner chamber top is the cuboid.
Optionally, the cylindrical small hole is used for fixing the medicine strip, and the cuboid at the top of the inner cavity is used for filling clear water.
Optionally, the spring piece is a V-shaped spring piece, and two sides of the spring piece are different in length.
Optionally, a threaded hole is formed in the short edge of the spring piece, and the threaded hole is connected with the support rod nut through a screw; the long edge front end of the spring piece is provided with a round hole, and the round hole is used for inserting a target line.
Optionally, the second strut and the fourth strut are both Z-shaped.
Optionally, during a burning rate test, a solid propellant charge bar with a preset size is penetrated with an ignition wire and a target wire and vertically placed in a charge bar socket; the ignition wire is fixed on the target support rod nut, and the target wire respectively passes through the round holes at the front ends of the long sides of the target spring pieces and is fixed on the corresponding support rod nut; the first plug, the second plug, the third plug and the fourth plug are connected with a control circuit.
The invention has the following advantages: the residue conductive solid propellant burning rate test medicine binding device provided by the embodiment of the invention comprises a first plug, a second plug, a third plug, a fourth plug, a base, a medicine strip socket, a first transition assembly, a second transition assembly, a third transition assembly, a fourth transition assembly, a first support rod nut, a second support rod nut, a third support rod nut, a fourth support rod nut, a first support rod, a second support rod, a third support rod, a fourth support rod and a spring piece; the first transition nut is fixed on the base through the first fastening nut, the second transition nut is fixed on the base through the second fastening nut, the third transition nut is fixed on the base through the third fastening nut, the fourth transition nut is fixed on the base through the fourth fastening nut, and the first plug and the first support rod are fixed through the first transition nut through threads; the second transition nut fixes a second plug and a second support rod through threads, the third transition nut fixes a third plug and a third support rod through threads, and the fourth transition nut fixes a fourth plug and a fourth support rod through threads; the medicine strip socket is fixed on the base through threads, the first support rod nut is fixed on the first support rod through a screw, and the second support rod nut, the third support rod nut and the fourth support rod nut are respectively fixed on the second support rod, the third support rod and the fourth support rod through screws; the ignition wire and the target wire are fixed through the tightness of each support rod nut, and the spring piece is fixed on the first support rod nut through a screw; first plug, second plug, third plug and fourth plug for connect control circuit, this bind medicine device dependable performance, structure are simple and easy, easily realize. Moreover, the medicine binding device provided by the embodiment of the invention can finish the installation of the ignition wire and the target wire only by loosening and tightening the support rod nut when the sample is replaced, and the test preparation process is simple and easy to operate.
Drawings
FIG. 1 is a front schematic view of a residual conductive solid propellant burning rate test drug binding device according to an embodiment of the invention;
FIG. 2 is a rear schematic view of a residual conductive solid propellant burning rate test drug binding device according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a drug strip socket on a residue conductive solid propellant burning rate test drug binding device according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a spring plate on a residue conductive solid propellant burning rate test medicine binding device according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a second strut on a residue conductive solid propellant burning rate test drug binding device according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a fourth supporting rod on a residue conductive solid propellant burning rate test medicine binding device according to an embodiment of the invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and with reference to the attached drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 and fig. 2 are schematic structural views of a residue conductive solid propellant burning rate test medicine binding device provided by an embodiment of the invention, wherein fig. 1 is a schematic front view of the medicine binding device, and fig. 2 is a schematic rear view of the medicine binding device.
The residue conductive solid propellant burning rate test medicine binding device comprises:
the plug comprises a first plug 1, a second plug 6, a third plug 22, a fourth plug 23, a base 4, a medicine strip socket 5, a first transition component, a second transition component, a third transition component, a fourth transition component, a first strut nut 11, 12, 16, a second strut nut 10, a third strut nut 18, a fourth strut nut 26, a first strut 14, a second strut 9, a third strut 19, a fourth strut 27 and spring pieces 13 and 17; wherein the first transition assembly comprises a first transition nut 3 and a first fastening nut 2, the second transition assembly comprises a second transition nut 8 and a second fastening nut 7, the third transition assembly comprises a third transition nut 20 and a third fastening nut 21, and the fourth transition assembly comprises a fourth transition nut 25 and a fourth fastening nut 24.
The first fastening nut 2 fixes the first transition nut 3 on the base 4, the second fastening nut 7 fixes the second transition nut 8 on the base 4, the third fastening nut 21 fixes the third transition nut 20 on the base 4, the fourth fastening nut 24 fixes the fourth transition nut 25 on the base 4, and the first transition nut 3 fixes the first plug 1 and the first support rod 14 through threads; the second transition nut 8 fixes the second plug 6 and the second support rod 9 through threads, the third transition nut 20 fixes the third plug 22 and the third support rod 19 through threads, and the fourth transition nut 25 fixes the fourth plug 23 and the fourth support rod 27 through threads; the medicine strip socket 5 is fixed on the base 4 through threads, the first support rod nuts 11, 12 and 16 are fixed on the first support rod 14 through screws, and the second support rod nut 10, the third support rod nut 18 and the fourth support rod nut 26 are respectively fixed on the second support rod 9, the third support rod 19 and the fourth support rod 27 through screws; the ignition wire and the target wire are fixed through the tightness of each support rod nut, and the spring pieces 13 and 17 are fixed on the first support rod nuts 12 and 16 through screws; a first plug 1, a second plug 6, a third plug 22 and a fourth plug 23 for connecting a control circuit.
During a burning rate test, a solid propellant powder strip with a preset size is penetrated with an ignition wire and a target wire and vertically placed in a powder strip socket; the ignition wire is fixed on the target support rod nut, and the target wire respectively passes through the round holes at the front ends of the long sides of the target spring pieces and is fixed on the corresponding support rod nut; the first plug, the second plug, the third plug and the fourth plug are connected with the control circuit, and finally the medicine binding device is installed in the combustion chamber.
In an alternative embodiment, the first plug, the second plug, the third plug and the fourth plug are all nickel-plated pure copper banana plugs.
In an optional embodiment, the base main body is made of insulating rubber wood, and a reinforcing sheet is arranged on the surface of the main body. The reinforcing sheet mounted on the surface of the main body can enhance the structural strength of the base for insulation of the common line, the ignition line, the first target and the second target line.
In an alternative embodiment, as shown in the schematic top view and front view of the drug strip holder in fig. 3, the drug strip holder cavity is composed of two parts, the bottom of the cavity is a cylindrical small hole with a diameter slightly larger than that of the propellant drug strip, and the top of the cavity is a cuboid. Wherein, the cylindrical aperture is used for fixing the medicine strip, and the cuboid at the top of the inner cavity is used for filling clear water. After the medicine binding is finished, a certain amount of clear water is filled into the inner cavity of the medicine binding machine, so that high-temperature residues generated by propellant combustion are prevented from falling to the bottom of propellant medicine strips under the blowing of flames on the combustion end face, and the coating layer is burnt through to cause deflagration of the medicine strips. Because propellant medicine strip all need wrap corresponding coating before carrying out the target line method test, can effectively obstruct the direct contact of clear water and medicine strip, the medicine strip socket is whole to be in below the second target line simultaneously, consequently the filling clear water can not produce adverse effect to propellant medicine strip's the speed of burning.
In an alternative embodiment, as shown in the left view, the front view and the top view of the spring plate in fig. 4, the spring plate is a V-shaped spring plate, and two sides of the spring plate have different lengths. The short edge of the spring piece is provided with a threaded hole which is connected with the support rod nut through a screw, so that any angle adjustment and fixation can be realized; the long edge front end of the spring piece is provided with a round hole which is used for inserting a target line. The propellant powder strip which is prepared and has completed the steps of igniting the wire and threading the target wire is vertically inserted into the powder strip socket, the first target wire and the second target wire are fixed on the corresponding supporting rod nut after passing through the round holes at the front end of the spring piece respectively, and meanwhile, the spring piece is deformed to a certain degree, so that the target wire can be completely separated from propellant residues after being fused.
In an optional embodiment, referring to fig. 5 and 6, the second supporting rod and the fourth supporting rod are both Z-shaped, and when the first target line and the second target line are fixed, the angle of the spring piece is adjusted to ensure that the connecting line of the round holes at the front ends of the spring pieces on the second supporting rod, the fourth supporting rod and the first supporting rod passes through the vertical central line of the propellant drug strip, so that the propellant drug strip is prevented from being subjected to the action of the target line pulling force on the drug binding device, and the stability and the precision of the burning rate test can be effectively improved. Fig. 5 is a left side view, a front view and a top view structural view of the first support bar, and fig. 6 is a left side view, a front view and a top view structural view of the second support bar.
According to the residue conductive solid propellant burning rate test medicine binding device provided by the embodiment of the invention, on one hand, the water storage inner cavity in the medicine strip socket is increased, so that the high-temperature residue generated by propellant burning is effectively prevented from falling to the bottom of the propellant medicine strip under the blowing of flame on the burning end surface and burning through the coating layer to cause deflagration of the medicine strip. In the second aspect, the V-shaped spring pieces are additionally arranged on the first supporting rod at the first target and the second target respectively, the spring pieces deform through the target lines when the medicine is bound, the phenomenon that the target lines can be rapidly separated from propellant burning rate residues after being fused is ensured, and the testing efficiency is improved. In the third aspect, the Z-shaped supporting rods are used as the first target supporting rod and the second target supporting rod, so that the supporting rods, the medicine strips and the round holes at the front ends of the spring pieces are in the same straight line, and the medicine strips are prevented from being stressed due to the connection of the target lines. In the fourth aspect, when the sample is replaced, the ignition wire and the target wire can be installed only by tightening and loosening the support rod nut, and the test preparation process is simple and easy to operate.
The residue conductive solid propellant burning rate test medicine binding device provided by the invention can avoid the problem of difficult timing caused by the conduction of propellant burning residues, can effectively reduce the explosive strip deflagration probability caused by the falling of propellant burning residues, improves the stress condition of the explosive strips on the medicine binding device through the improvement of the device, and improves the burning rate test efficiency and stability.
It should be noted that the above description is only a preferred embodiment of the present invention, and it should be understood that various changes and modifications can be made by those skilled in the art without departing from the technical idea of the present invention, and these changes and modifications are included in the protection scope of the present invention.
The embodiments in the present description are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the details of the invention not described in detail in this specification are well within the skill of those in the art.
Claims (9)
1. A medicine binding device for testing the burning rate of a residual conductive solid propellant is characterized by comprising: the plug comprises a first plug (1), a second plug (6), a third plug (22), a fourth plug (23), a base (4), a medicine strip socket (5), a first transition component, a second transition component, a third transition component, a fourth transition component, first support rod nuts (11) (12) (16), a second support rod nut (10), a third support rod nut (18), a fourth support rod nut (26), a first support rod (14), a second support rod (9), a third support rod (19), a fourth support rod (27) and spring pieces (13) (17); wherein the first transition assembly comprises a first transition nut (3) and a first fastening nut (2), the second transition assembly comprises a second transition nut (8) and a second fastening nut (7), the third transition assembly comprises a third transition nut (20) and a third fastening nut (21), and the fourth transition assembly comprises a fourth transition nut (25) and a fourth fastening nut (24);
the first fastening nut (2) fixes the first transition nut (3) on the base (4), the second fastening nut (7) fixes the second transition nut (8) on the base (4), the third fastening nut (21) fixes the third transition nut (20) on the base (4), the fourth fastening nut (24) fixes the fourth transition nut (25) on the base (4), the first transition nut (3) fixes the first plug (1) and the first support rod (14) through threads, the second transition nut (8) fixes the second plug (6) and the second support rod (9) through threads, the third transition nut (20) fixes the third plug (22) and the third strut (19) by screw threads, the fourth transition nut (25) fixes the fourth plug (23) and the fourth strut (27) through threads;
the medicine strip socket (5) is fixed on the base (4) through threads, the first support rod nuts (11), (12) and (16) are fixed on the first support rod (14) through screws, and the second support rod nut (10), the third support rod nut (18) and the fourth support rod nut (26) are respectively fixed on the second support rod (9), the third support rod (19) and the fourth support rod (27) through screws; the ignition wire and the target wire are fixed through the tightness of each support rod nut, and the spring pieces (13) and (17) are fixed on the first support rod nuts (12) and (16) through screws; the first plug (1), the second plug (6), the third plug (22) and the fourth plug (23) are used for connecting a control circuit.
2. The medication binding device according to claim 1, wherein the first plug, the second plug, the third plug and the fourth plug are all nickel-plated pure copper banana plugs.
3. The medicine binding device according to claim 1, wherein the base body is made of insulating rubber wood, and a reinforcing sheet is mounted on the surface of the base body.
4. The medication binding device according to claim 1, characterized in that: the inner cavity of the medicine strip socket is composed of two parts, the bottom of the inner cavity is a cylindrical small hole with the diameter slightly larger than that of the propellant medicine strip, and the top of the inner cavity is a cuboid.
5. The medicine binding device according to claim 4, wherein the cylindrical small hole is used for fixing a medicine strip, and the cuboid at the top of the inner cavity is used for filling clear water.
6. The drug binding device according to claim 1, wherein the spring plate is a V-shaped spring plate, and two sides of the spring plate have different lengths.
7. The medicine binding device according to claim 6, wherein a threaded hole is formed in a short side of the spring plate, and the threaded hole is connected with the support rod nut through a screw; the long edge front end of the spring piece is provided with a round hole, and the round hole is used for inserting a target line.
8. The drug binding device of claim 1, wherein the second strut and the fourth strut are each Z-shaped.
9. The medication binding device according to claim 1, wherein:
during a burning rate test, a solid propellant powder strip with a preset size is penetrated with an ignition wire and a target wire and vertically placed in a powder strip socket;
the ignition wire is fixed on the target support rod nut, and the target wire respectively passes through the round holes at the front ends of the long sides of the target spring pieces and is fixed on the corresponding support rod nut;
the first plug, the second plug, the third plug and the fourth plug are connected with a control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011463130.0A CN112523901B (en) | 2020-12-11 | 2020-12-11 | Medicine device is tied up in test of electrically conductive solid propellant burning rate of residue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011463130.0A CN112523901B (en) | 2020-12-11 | 2020-12-11 | Medicine device is tied up in test of electrically conductive solid propellant burning rate of residue |
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| CN112523901A true CN112523901A (en) | 2021-03-19 |
| CN112523901B CN112523901B (en) | 2022-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358429A (en) * | 2021-04-29 | 2021-09-07 | 上海航天化工应用研究所 | Medicine strip sample preparation device for static burning speed test of embedded metal wire propellant |
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| 刘宗魁等: "固体火箭发动机装药动态燃速辨识方法", 《舰船科学技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358429A (en) * | 2021-04-29 | 2021-09-07 | 上海航天化工应用研究所 | Medicine strip sample preparation device for static burning speed test of embedded metal wire propellant |
| CN113358429B (en) * | 2021-04-29 | 2022-10-14 | 上海航天化工应用研究所 | Medicine strip sample preparation device for static burning rate test of metal wire embedded propellant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112523901B (en) | 2022-03-04 |
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