GB2619480A - Solid rocket engine rear skirt connection mechanical arm type interstage separation test device and method - Google Patents
Solid rocket engine rear skirt connection mechanical arm type interstage separation test device and method Download PDFInfo
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- GB2619480A GB2619480A GB2314655.8A GB202314655A GB2619480A GB 2619480 A GB2619480 A GB 2619480A GB 202314655 A GB202314655 A GB 202314655A GB 2619480 A GB2619480 A GB 2619480A
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- hold hoop
- test device
- separation test
- assembly
- slider
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- 238000001612 separation test Methods 0.000 title claims abstract description 64
- 239000007787 solid Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003032 molecular docking Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 18
- 238000000926 separation method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F02K9/32—Constructional parts; Details not otherwise provided for
Abstract
The present invention provides a solid rocket engine rear skirt connection mechanical arm type interstage separation test device and method. The separation test device comprises a front embracing ring assembly, a rear embracing ring assembly and a connecting rod, wherein the front embracing ring assembly and the rear embracing ring assembly each comprise an upper embracing ring, a lower embracing ring, a mechanical arm and a roller assembly; a rear connecting plate is further fixed at an outer end of the rear embracing ring assembly; several connecting holes which are uniformly distributed in a circumferential direction are provided in the rear connecting plate and are configured for connecting a rear skirt of a sub-stage engine; two circumferential sides of an outer surface of the upper embracing ring are each provided with an interface structure that is connected to the mechanical arm; and the interface structure can be fitted to an arc plate structure at one end of the mechanical arm, such that the mechanical arm can move along the outer surface of the upper embracing ring by means of the arc plate structure in a circumferential direction and is fixed after moving in place. The separation test device is convenient in that all the assembly processes are carried out on the ground, and the separation test device is lifted after assembly and does not need to be assembled at a high altitude; and all the adjustments are integrated on the mechanical arm, debugging is easy, and the safety is improved and the working efficiency is also improved.
Description
SOLID ROCKET ENGINE REAR SKIRT CONNECTION MECHANICAL ARM TYPE INTERSTAGE SEPARATION TEST DEVICE AND METHOD
Technical Field
The present disclosure relates to a rear-skirt-connection mechanical-armtype test device for a solid rocket engine, belonging to the technical field of interstage separation tests of solid rocket engines.
Background Art
At present, the interstage separation test device for a solid rocket engine adopts a clamping structure, that is, multiple groups of small arc plate structures are used to press a sub-stage engine, thus playing the role of hold hoop to ensure that the sub-stage engine and the test device can be separated together.
However, with the improvement of the performance of the solid rocket engine, the volume and weight of the sub-stage engine have been greatly improved, and the separation speed of the sub-stage engine has also been improved. When the traditional method is used in this new interstage separation test, there will be the risk that the friction force is not large enough which results in that the sub-stage engine is separated from and flies directly out of the separation fixture. Moreover, the weight of this traditional clamping structure is fully supported by the small arc plates on the lower arc seat, which will lead to the deformation of the lower arc seat and make the installation more difficult, as shown in FIG. 12.
In addition, before the separation test, it is necessary to connect the substage engine with the test interstage section in front. For the original upper-andlower-arc-seat-type interstage separation test device, a base is formed by extending a rib plate on the upper arc seat, and then a roller assembly is connected to form a linear movement pair. However, this structure can only adjust the center height of the separation test device and the sub-stage engine as a whole, but cannot solve the problem of circumferential dislocation between the test interstage section and the sub-stage engine. When it is necessary to adjust the circumferential hole alignment between the test interstage section and the sub-stage engine, other workpieces must be used, and it is very difficult, time-consuming and laborious to adjust the rotation of the sub-stage engine in the separation test device.
Summary
In order to avoid the shortcomings of the prior art, the present disclosure provides a rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine (i.e., solid rocket engine rear skirt connection mechanical arm type interstage separation test device) and a method thereof, which are particularly suitable for the separation test with a high separation speed of the sub-stage engine, so as to meet the test requirements of heavy weight, high speed and short test period of the sub-stage engine.
The device adopts a mechanical arm structure, which can freely slide in a certain range along the circumferential direction of the upper arc seat, lift the mechanical arms before docking, and adjust the circumferential position of the combination of the separation test device and the sub-stage engine as a whole, then adjust the mechanical arms to be in a horizontal state according to the actual positions, and then place/lower the roller to adjust the center height to complete the docking of the sub-stage engine with the interstage section.
The technical solutions of the present disclosure are as follows.
A rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine includes a front hold hoop assembly, a rear hold hoop assembly and connecting rods; the front hold hoop assembly and the rear hold hoop assembly each include an upper hold hoop, a lower hold hoop, a mechanical arm and a roller assembly, and an outer end of the rear hold hoop assembly is further fixed with a rear connecting plate; the rear connecting plate is provided with a plurality of connecting holes evenly distributed along a circumferential direction for connecting a rear skirt of a sub-stage engine; the upper hold hoop and the lower hold hoop can be connected in combination to hold the sub-stage engine tightly, and elastic elements are arranged on inner surfaces of the upper hold hoop and the lower hold hoop for contacting the sub-stage engine; circumferential two sides of an outer surface of the upper hold hoop are provided with respective connector structures connected to the mechanical arms, and each connector structure can be matched with/cooperate with an arc plate structure at one end of the mechanical arm, so that the mechanical arm can move circumferentially along the outer surface of the upper hold hoop through the arc plate structure and be fixed after moving in place; the mechanical arm at the side of the upper hold hoop consists of an arc plate, a beam and a roller assembly, the arc plate and the roller assembly are fixed at two ends of the beam, an inner side surface of the arc plate can be fitted with the outer surface of the upper hold hoop and matched with the connector structure on the outer surface of the upper hold hoop; the roller assembly consists of an upper height adjusting structure (i.e., height adjusting structure at an upper portion) and a lower roller (i.e., roller at a lower portion); and a plurality of connecting rods axially connect the front hold hoop assembly and the rear hold hoop assembly, thereby making the front hold hoop assembly and the rear hold hoop assembly connected into a whole.
Further, the connecting holes on the rear connecting plate is long connecting holes, and length directions of the connecting holes are perpendicular to a connecting surface of the upper hold hoop and the lower hold hoop, so as to ensure that the upper hold hoop and the lower hold hoop can still be connected to the rear skirt of the sub-stage engine after being tightly pressed.
Further, the elastic elements are felts.
Further, the connector structure includes a slider (slide block) at a middle position of the upper hold hoop in a width direction and connecting holes at two sides of the slider, the slider is in a long-strip structure arranged on the outer surface of the upper hold hoop in a circumferential direction, and openings of the plurality of connecting holes at the two sides of the slider all face a circle center of the upper hold hoop.
Further, a circumferential slide slot (i.e. slide slot in a circumferential direction) is arranged in a middle position of the inner side surface of the arc plate in a width direction, and a plurality of circumferential long holes (i.e. long holes in the circumferential direction) are arranged at the two sides of the slide slot; the slider on the outer surface of the upper hold hoop is matched with/cooperates with the slide slot on the inner side surface of the arc plate, so that axial dislocation of the upper hold hoop and the arc plate is prevented, and the length of the slide slot is larger than that of the slider; the long holes arranged at the two sides of the slide slot correspondingly cooperate with the connecting holes at the two sides of the slider on the outer surface of the upper hold hoop, relative movement of the upper hold hoop and the arc plate of the mechanical arm is implemented through the slider and the slide slot, and fixing at a required position is completed through a fastening bolt; and the adjustment of the relative positions of the mechanical arms may be implemented by loosening the fastening bolt and adjusting relative positions of the long holes and the connecting holes.
Further, the mechanical arm can complete circumferential adjustment of ± 6.5 degrees.
Further, in the roller assembly, the upper height adjusting structure is a screw-slider structure, a surface of a shell of the height adjusting structure is provided with a radial pin, a side surface of the slider inside the shell is provided with a keyway (key groove) in a height direction, and the keyway cooperates with the pin to limit a rotational freedom of the slider; the slider is provided at a center thereof with an axial threaded hole, and a screw is provided at a center of the shell, the screw cooperates with the axial threaded hole at the center of the slider, so that axial movement of the slider is implemented by rotating the screw; and a lower end of the slider is connected to the roller to implement adjustment of a height of the roller, so that it can cooperate with a guide rail to complete a separation test.
Further, the front hold hoop assembly and the rear hold hoop assembly are connected by means of three connecting rods being evenly distributed in a circumferential direction, wherein one of the connecting rods is arranged at a center position of a top of the upper hold hoop and the other two connecting rods are arranged at two sides of the lower hold hoop, the connecting rods arranged at the two sides of the lower hold hoop are also used as mounting connectors of counterweight arc plate(s), and mounting position(s) of the counterweight arc plate(s) are in a same longitudinal plane as a gravity center position of the separation test device, and the number of the counterweight arc plates can be adjusted as required to adjust a mass of the whole separation test device.
The method for performing an interstage separation test by using the separation test device includes the following steps: step 1: placing the lower hold hoop of the separation test device on the ground to restrict the lower hold hoop from rotating, and hoisting and placing the sub-stage engine into the lower hold hoop; step 2: the upper hold hoop and the lower hold hoop tightly holding the substage engine through elastic elements to form a combination of the sub-stage engine and the separation test device, and connecting the sub-stage engine and the separation test device into a whole through the rear connecting plate; step 3: hoisting the combination of the sub-stage engine and the separation test device, and making the combination connected to an interstage section, including: loosening the connecting bolt on the arc plate to adjust the mechanical arms to be in an erected state, hoisting the combination, circumferentially adjusting the combination as a whole to complete docking of the sub-stage engine with the interstage section, and then adjusting the mechanical arms to be in a horizontal state to fix the arc plate; step 4: adjusting the roller assembly to place the roller onto an elevated guide rail; and step 5: completing an interstage separation test. Beneficial effects The present disclosure provides a rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine and a method.
Firstly, the convenience of the separation device lies in that all assembling processes are performed on the ground, and it is hoisted after the assembling is completed, so that there is no need to perform assembling in the air. Secondly, all adjustments are performed on the mechanical arm, which is convenient for debugging and greatly reduces the process time. Thirdly, due to the presence of the rear connecting plate, the engine-fixture combination is ensured to be separated as a whole. Finally, the total processes are reduced, and the aerial work is reduced, thus improving working efficiency while improving safety.
Some additional aspects and advantages of the present disclosure will be set forth in the description which follows, and some will be obvious from the description which follows, or may be learned by practice of the present disclosure.
Brief Description of Drawings
The above and/or additional aspects and advantages of the present disclosure will be apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: FIG. 1: a structural schematic diagram of an interstage separation test device; FIG. 2: a side view of FIG. 1; FIG. 3: a structural schematic diagram of a rear connecting plate, wherein 1. upper hold hoop; 2. mechanical arm; 3. roller assembly; 4. elastic element; 5. lower hold hoop; 6. connecting rod; 7. rear connecting plate; 8. counterweight arc plate; FIG. 4: a schematic diagram of the combined structure of the mechanical arm and the roller assembly; FIG. 5: a partial sectional view of FIG. 4; FIG. 6: a schematic diagram of the assembling of the mechanical arm, wherein 10. lower arc plate of mechanical arm; 11. arc plate of upper hold hoop; 12. felt; FIG. 7: a schematic diagram of the upper hold hoop; FIG. 8: a side view of FIG. 7; FIG. 9: a schematic diagram of the lower arc plate of the mechanical arm; FIG. 10: a side view of FIG. 9; FIG. 11: a schematic diagram of the test device completing circumferential adjustment; and FIG. 12: schematic diagram showing deformation of the original separation device being installed with the engine to be separated: (a) before deformation, and (b) after deformation.
Detailed Description of Embodiments
The present disclosure mainly aims at the requirements of the interstage separation test of the solid rocket engine with the sub-stage engine having large weight and high speed, and provides a rear-skirt-connection mechanical-armtype interstage separation test device for a solid rocket engine and a method thereof.
The sub-stage engine is connected through the rear skirt to avoid the problem that the sub-stage engine is separated from and flies out of the separation fixture directly due to the relatively high separation speed and insufficient friction of the engine. By means of the nearly full-size envelope, the problem of deformation of the test fixture caused by excessive engine weight is solved. By means of the mechanical arm, the problem of circumferential docking of the test fixture with the sub-stage combination and the interstage section is solved. By means of threaded bushing, the adjustment of the test device of the axial direction is completed. By adopting a frame structure and using a large number of section steels, the weight of the separation fixture is reduced, while ensuring the use strength.
The structure of the rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine of the present disclosure is as shown in FIGS. 1 and 2, which includes a front hold hoop assembly, a rear hold hoop assembly and connecting rods.
The main structure of the front hold hoop assembly is the same as that of the rear hold hoop assembly, each including an upper hold hoop, a lower hold hoop, a mechanical arm and a roller assembly. The difference is that the outer end of the rear hold hoop assembly is welded and fixed with a rear connecting plate to form a whole. As shown in FIG. 3, the rear connecting plate is provided with a plurality of connecting holes evenly distributed in a circumferential direction for connecting a rear skirt of a sub-stage engine, so as to avoid the problem that the sub-stage engine is separated from and flies directly out of the separation test device due to a high separation speed and insufficient friction of the substage engine during the separation test. Further, the connecting holes are long connecting holes, and length directions of the connecting holes are perpendicular to a connecting surface of the upper hold hoop and the lower hold hoop, so as to ensure that the upper hold hoop and the lower hold hoop can still be connected to the rear skirt of the sub-stage engine after being pressed tightly.
The upper hold hoop and the lower hold hoop can be connected in combination to hold the sub-stage engine tightly, and elastic elements, such as felts, are arranged on inner surfaces of the upper hold hoop and the lower hold hoop, so that the damage to the surface of the sub-stage engine after it is tightly held by the upper hold hoop and the lower hold hoop can be avoided, and the friction force can be improved. By means of the nearly full-size envelope of the upper hold hoop and the lower hold hoop, the docking between the sub-stage engine and the separation test device can be completed on the ground first to form a whole, and then the whole is hoisted to the separation plane, thus avoiding the installation difficulty problem generated due to the local deformation of the test fixture caused by the overweight of the sub-stage engine.
At the same time, it is installed, hoisted and adjusted as a whole, reducing the working steps, reducing the working difficulty, and improving the working efficiency.
As shown in FIGS. 6 and 7, circumferential two sides of an outer surface of the upper hold hoop are provided with respective connector structures connected to the mechanical arms, and each connector structure can cooperate with an arc plate structure at one end of the mechanical arm, so that the mechanical arm can move circumferentially along the outer surface of the upper hold hoop through the arc plate structure and be fixed after moving in place. As shown in FIG. 8, the connector structure includes a slider at a middle position of the upper hold hoop in a width direction and connecting holes at two sides of the slider, the slider is in a long-strip structure arranged on the outer surface of the upper hold hoop in a circumferential direction, and openings of the plurality of connecting holes at the two sides of the slider all face a circle center of the upper hold hoop.
The mechanical arm mainly solves the problem of circumferential docking of the combination formed by the separation test device and the sub-stage engine with the interstage section. The mechanical arm can be locked after the upper hold hoop moves circumferentially to ensure sufficient safety of the test. As shown in FIG. 4, the mechanical arm at the side of the upper hold hoop consists of an arc plate, a beam and a roller assembly, wherein the arc plate and the roller assembly are welded and fixed at two ends of the beam.
As shown in FIG. 6, the inner side surface of the arc plate can be fitted with the outer surface of the upper hold hoop. The arc plate is as shown in FIGS. 9 and 10, wherein a slide slot in a circumferential direction is arranged in a middle position of the inner side surface of the arc plate in a width direction, and a plurality of long holes in a circumferential direction are arranged at two sides of the slide slot.
The slider on the outer surface of the upper hold hoop cooperate with the slide slot on an inner side surface of the arc plate, so that axial dislocation of the upper hold hoop and the arc plate is prevented, and the length of the slide slot is larger than that of the slider; the long holes arranged at the two sides of the slide slot correspondingly cooperate with the connecting holes at the two sides of the slider on the outer surface of the upper hold hoop, relative movement of the upper hold hoop and the arc plate of the mechanical arm is implemented through the slider and the slide slot, and fixing at a required position is completed through a fastening bolt. The adjustment of the relative positions of the mechanical arms can be implemented by loosening the fastening bolt and adjusting relative positions of the long holes and the connecting holes.
In this embodiment, the mechanical arm can complete circumferential adjustment of ±6.5 degrees. In the actual centering process, the relative deviation between the sub-stage engine and the interstage section is generally within 3 degrees, which can fully meet the test requirements.
The roller assembly is the moving assembly of the separation test device. As shown in FIGS. 4 and 5, the roller assembly consists of an upper height adjusting structure and a lower roller. The upper height adjusting structure is a screw-slider structure, a surface of a shell of the height adjusting structure is provided with a radial pin, a side surface of the slider inside the shell is provided with a keyway in a height direction, and the keyway cooperates with the pin to limit a rotational freedom of the slider; the slider is provided at a center thereof with an axial threaded hole, and a screw is provided at a center of the shell, the screw cooperates with the axial threaded hole at the center of the slider, and axial movement of the slider is implemented by rotating the screw. A lower end of the slider is connected to the roller to implement adjustment of a height of the roller, so that it can cooperate with a guide rail to complete the separation test.
As shown in FIG. 2, a plurality of connecting rods are axially connected to the front hold hoop assembly and the rear hold hoop assembly, thereby connecting the front hold hoop assembly and the rear hold hoop assembly into a whole. In this embodiment, the front hold hoop assembly and the rear hold hoop assembly are connected by means of three connecting rods being evenly distributed in a circumferential direction, wherein one of the connecting rods is arranged at a center position of a top of the upper hold hoop and the other two connecting rods are arranged at two sides of the lower hold hoop. The connecting rods arranged at the two sides of the lower hold hoop are also used as mounting connectors of counterweight arc plate(s), and mounting position(s) of the counterweight arc plate(s) are in a same longitudinal plane as a gravity center position of the separation test device, and the number of the counterweight arc plates can be adjusted as required to adjust a mass of the whole separation test device.
This separation test device is very different from the previous test devices. In addition to adding a rear connecting plate to ensure that the separation test device is always carried in the engine separation process, all the adjustments in the interstage separation process are performed on the upper part, that is, the combination of the upper hold hoop, the mechanical arm and the roller assembly, by means of providing adjustable mechanical arm, so that the number of adjustment links are reduced, and the work efficiency is improved. When docking, the separation test device can implement the docking of the engine to be separated and the interstage section by adjusting the combination, while for the old device, it can only adjust the engine first, and then assemble the separation device, which processes are complicated.
The specific implementation processes of the present disclosure are as follows.
Step 1: placing the lower hold hoop of the separation test device on the ground to restrict, through two sleepers, the lower hold hoop from rotating, and hoisting and placing the sub-stage engine into the lower hold hoop.
Step 2: tightly holding the sub-stage engine by the upper hold hoop and the lower hold hoop through the felts to form a combination of the sub-stage engine and the test device, and connecting the sub-stage engine and the test device into a whole through the rear connecting plate.
Step 3: hoisting the combination of the sub-stage engine and the test device, making the combination connected to an interstage section. The main process is shown in FIG. 11. Firstly, the mechanical arms are adjusted from the state shown in the left side in FIG. 11 to an erected state as shown in the middle of FIG. 11 by loosening the connecting bolt on the arc plate, and then the combination is hoisted, and the whole combination is adjusted circumferentially to complete the docking of the sub-stage engine with the interstage section, and then the mechanical arms are adjusted to the horizontal state, i.e., the state shown in right side of FIG. 4.
Step 4: adjusting the roller assembly to place the roller onto an elevated guide rail.
Step 5: completing an interstage separation test.
Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present disclosure, and those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure without departing from the principles and spirits of the present disclosure.
Claims (9)
- What is claimed is: 1. A rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine, comprising a front hold hoop assembly, a rear hold hoop assembly and connecting rods, wherein the front hold hoop assembly and the rear hold hoop assembly each comprise an upper hold hoop, a lower hold hoop, a mechanical arm and a roller assembly, and an outer end of the rear hold hoop assembly is further fixed with a rear connecting plate; the rear connecting plate is provided with a plurality of connecting holes evenly distributed in a circumferential direction and configured for being connected with a rear skirt of a sub-stage engine; the upper hold hoop and the lower hold hoop are configured to be connected in combination to hold the sub-stage engine tightly, and elastic elements are arranged on inner surfaces of the upper hold hoop and the lower hold hoop and configured for contacting the sub-stage engine; circumferential two sides of an outer surface of the upper hold hoop are provided with respective connector structures connected to the mechanical arms, and each of the connector structures is configured to cooperate with an arc plate structure at one end of the mechanical arm, so that the mechanical arm can move circumferentially along the outer surface of the upper hold hoop through the arc plate structure and be fixed after moving in place; the mechanical arm on the side of the upper hold hoop consists of an arc plate, a beam and a roller assembly, the arc plate and the roller assembly are fixed at two ends of the beam, an inner side surface of the arc plate is configured to be fitted with the outer surface of the upper hold hoop and cooperate with the connector structure on the outer surface of the upper hold hoop; the roller assembly consists of an upper height adjusting structure and a lower roller; and the connecting rods are axially connected to the front hold hoop assembly and the rear hold hoop assembly, thereby connecting the front hold hoop assembly and the rear hold hoop assembly into a whole.
- 2. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1, wherein the connecting holes on the rear connecting plate is long connecting holes, and length directions of the connecting holes are perpendicular to a connecting surface of the upper hold hoop and the lower hold hoop, so as to ensure that the upper hold hoop and the lower hold hoop can still be connected to the rear skirt of the sub-stage engine after being pressed.
- 3. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1, wherein the elastic elements are felts.
- 4. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1, wherein the connector structure comprises a slider at a middle position of the upper hold hoop in a width direction and connecting holes at two sides of the slider, the slider is in a long-strip structure arranged on the outer surface of the upper hold hoop in a circumferential direction, and openings of the connecting holes at the two sides of the slider all face a circle center of the upper hold hoop.
- 5. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 4, wherein a circumferential slide slot is arranged in a middle position of the inner side surface of the arc plate in a width direction, and a plurality of circumferential long holes are arranged on two sides of the slide slot; the slider on the outer surface of the upper hold hoop is configured to cooperate with the slide slot on an inner side surface of the arc plate, so that axial dislocation of the upper hold hoop and the arc plate is prevented, and a length of the slide slot is larger than a length of the slider; the long holes arranged at the two sides of the slide slot are configured to correspondingly cooperate with the connecting holes at the two sides of the slider on the outer surface of the upper hold hoop, wherein relative movement of the upper hold hoop and the arc plates of the mechanical arms is implemented through the slider and the slide slot, and fixing at a required position is completed through a fastening bolt; and adjustment of relative positions of the mechanical arms can be implemented by loosening the fastening bolt and adjusting relative positions of the long holes and the connecting holes.
- 6. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1 or 4, wherein the mechanical arms are each configured to complete a circumferential adjustment of ±6.5 degrees.
- 7. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1, wherein in the roller assembly, the upper height adjusting structure is a screw-slider structure, a surface of a shell of the height adjusting structure is provided with a radial pin, a side surface of the slider inside the shell is provided with a keyway in a height direction, and the keyway is configured to cooperate with the pin to limit a rotational freedom of the slider; the slider is provided at a center thereof with an axial threaded hole, and a screw is provided at a center of the shell, the screw is configured to cooperate with the axial threaded hole in the center of the slider, to realize axial movement of the slider by rotating the screw; a lower end of the slider is connected to the roller to implement adjustment of a height of the roller, so that a separation test can be completed through cooperation with a guide rail.
- 8. The rear-skirt-connection mechanical-arm-type interstage separation test device for a solid rocket engine according to claim 1, wherein the front hold hoop assembly and the rear hold hoop assembly are connected by means of three connecting rods being evenly distributed in the circumferential direction, one of the connecting rods is arranged at a center position of a top of the upper hold hoop and the other two connecting rods are arranged at the two sides of the lower hold hoop, the connecting rods arranged at the two sides of the lower hold hoop are also used as mounting connectors of at least one counterweight arc plate, and a mounting position of the at least one counterweight arc plate is in a same longitudinal plane as a gravity center position of the separation test device, and number of the at least one counterweight arc plate is adjusted as required to adjust a mass of the whole separation test device.
- 9. A method for performing an interstage separation test by using the separation test device according to claim 1, comprising following steps: step 1: placing the lower hold hoop of the separation test device on the ground to restrict the lower hold hoop from rotating, and hoisting and placing the sub-stage engine into the lower hold hoop; step 2: tightly holding the sub-stage engine by the upper hold hoop and the lower hold hoop through elastic elements to form a combination of the sub-stage engine and the separation test device, and connecting the substage engine and the separation test device into a whole through the rear connecting plate; step 3: hoisting the combination of the sub-stage engine and the separation test device, and making the combination connected to an interstage section, which step comprises: loosening the connecting bolt on the arc plate to adjust the mechanical arms to an erected state, hoisting the combination, circumferentially adjusting the combination as a whole to complete docking of the substage engine with the interstage section, and then adjusting the mechanical arms to a horizontal state to fix the arc plate; step 4: adjusting the roller assembly to place the roller onto an elevated guide rail; and step 5: completing the interstage separation test.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730417.3A CN113638822B (en) | 2021-06-30 | 2021-06-30 | Mechanical arm type interstage separation test device for rear skirt connection of solid rocket engine |
| PCT/CN2022/101351 WO2023274096A1 (en) | 2021-06-30 | 2022-06-26 | Solid rocket engine rear skirt connection mechanical arm type interstage separation test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202314655D0 GB202314655D0 (en) | 2023-11-08 |
| GB2619480A true GB2619480A (en) | 2023-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2314655.8A Pending GB2619480A (en) | 2021-06-30 | 2022-06-26 | Solid rocket engine rear skirt connection mechanical arm type interstage separation test device and method |
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| Country | Link |
|---|---|
| CN (1) | CN113638822B (en) |
| GB (1) | GB2619480A (en) |
| WO (1) | WO2023274096A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638822B (en) * | 2021-06-30 | 2023-12-29 | 西安航天动力测控技术研究所 | Mechanical arm type interstage separation test device for rear skirt connection of solid rocket engine |
| CN114135422A (en) * | 2021-11-29 | 2022-03-04 | 西安航天动力测控技术研究所 | General separation test device of solid rocket engine |
| CN114576037A (en) * | 2022-02-24 | 2022-06-03 | 西安零壹空间科技有限公司 | Three-dimensional mass center adjusting structure of solid rocket engine |
| CN116767518B (en) * | 2023-08-25 | 2023-11-17 | 天津航天机电设备研究所 | Effective load cabin body connection unlocking mechanism with unlocking gap |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023274096A1 (en) | 2023-01-05 |
| CN113638822A (en) | 2021-11-12 |
| GB202314655D0 (en) | 2023-11-08 |
| CN113638822B (en) | 2023-12-29 |
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