CN114857995A - Launching device pushes away bullet and launching device - Google Patents
Launching device pushes away bullet and launching device Download PDFInfo
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- CN114857995A CN114857995A CN202210419336.6A CN202210419336A CN114857995A CN 114857995 A CN114857995 A CN 114857995A CN 202210419336 A CN202210419336 A CN 202210419336A CN 114857995 A CN114857995 A CN 114857995A
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- 238000000034 method Methods 0.000 claims abstract description 37
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F1/00—Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannons; Harpoon guns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The invention relates to a propelling bullet of a launching device and the launching device, belonging to the hydrodynamic experiment field; the bullet comprises a bullet main body, a power receiving module, a guide module and a connecting piece; the connecting piece and the power receiving module are respectively arranged at the front end and the rear end of the bullet main body, the power receiving module is used for transmitting the driving force of the launching device to the bullet main body, and the connecting piece is used for being connected with a high-speed water inlet structure at the front end in the launching acceleration process; the guide module is arranged on the bullet main body, and ensures that the structure does not deviate along the axial direction in the launching acceleration process. The invention realizes the high-speed water-entering launching process of the non-revolving body structure, has simple structure, convenient and fast installation and low cost, and can provide stable pushing and accelerating functions for the high-speed water-entering experiment of the non-revolving body structure.
Description
Technical Field
The invention belongs to the field of hydrodynamic experiments, and particularly relates to a propelling bullet of a launching device and the launching device.
Background
The water inlet process is an important link for transiting from an air medium into a water medium, the high-speed water inlet of a structure is a complex mechanical process of strong mutual coupling of gas, liquid and solid phases, and the research on the water inlet problem has strong engineering applicability, and particularly under the condition of high speed, the water inlet process is short, but the water inlet link in the whole motion process is very important. Besides theoretical analysis and numerical simulation, experimental research is also an indispensable important research method, and the change rule of the corresponding physical parameters can be obtained more intuitively. In the prior art, a launching device for a revolving body structure entering water at a high speed is recorded, and a shot is launched by accelerating and releasing high-pressure gas.
In the experiment of the structure entering water, the launching tube of the high-speed water entering launching device is generally a circular tube, and the structure is accelerated by using high-pressure air in the launching process, so that good air tightness is ensured, the size of the structure cannot exceed the inner diameter of the launching tube, and the appearance is preferably in a shape of a revolution body. Therefore, certain difficulty is brought to the launching process of the water-entering experiment of the non-revolving body structure. The high-altitude gliding aircraft is a novel aircraft developed on the basis of the concept of 'high-altitude water entering', realizes the integration of high-altitude gliding and underwater navigation, and has the advantages of low cost, long range, capability of accurately executing tasks and the like. Because the aircraft needs to have functions of sailing in water, gliding and the like, the aircraft is usually a non-revolving body structure with wing-shaped side wings, and when the aircraft enters water, the non-revolving body structure needs to be accelerated and released.
At present, the research on the high-speed water-entering launching device of the non-revolving body structure is less, the prior art adopts two-stage pressurized gas to directly accelerate the bullet holder filled with the structure, and the bullet holder is separated from the structure through collision. However, the missile supports and the experimental models in the system are in one-to-one correspondence, and different models need to be accelerated by using different missile supports; and whole in-process, high-pressure gas direct action is held in the palm the afterbody at the bullet, and the bullet holds in the palm probably takes place the atress inhomogeneous and produces rotation moment and lead to the structure slope this moment, and the income water produces certain attack angle, is unfavorable for the experiment and carries out and the processing of experimental data.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides a propelling bullet of a launching device and the launching device, which belong to launching devices with propelling structures. This way, the limitation of the launching tube to the shape of the structure can be eliminated.
The technical scheme of the invention is as follows: a kind of launcher pushes the bullet, characterized by: the bullet comprises a bullet main body, a power receiving module, a guide module and a connecting piece; the connecting piece and the power receiving module are respectively arranged at the front end and the rear end of the bullet main body, the power receiving module is used for transmitting the driving force of the launching device to the bullet main body, and the connecting piece is used for being connected with a high-speed water inlet structure at the front end in the launching acceleration process;
the guide module is arranged on the bullet main body, and ensures that the structure does not deviate along the axial direction in the launching acceleration process.
The further technical scheme of the invention is as follows: the material of the propelling bullet is aluminium.
The further technical scheme of the invention is as follows: the main body of the bullet is a hollow long rod, and the outer diameter of the main body of the bullet is smaller than the inner diameter of the launching gun barrel.
The further technical scheme of the invention is as follows: the length of the long rod is consistent with that of the launching gun barrel.
The further technical scheme of the invention is as follows: the power receiving module comprises a tailstock and a snapping screw; the tailstock is a revolving body, is coaxially fixed at the rear end of the projectile main body and is in clearance fit with the launching gun barrel; before launching, the tailstock is connected with the tail part of the launching tube through a snapping screw, and is prevented from falling under the influence of gravity.
The further technical scheme of the invention is as follows: the tail seat is connected with the long rod through a screw thread, and the tail end of the long rod is provided with an internal screw thread which is coaxially connected with the tail seat through the screw thread.
The further technical scheme of the invention is as follows: the guide module is a guide flange, coaxially sleeved on the outer peripheral surface of the projectile main body and in clearance fit with the launching gun barrel, and ensures that the projectile main body does not deviate in the launching acceleration process.
The further technical scheme of the invention is as follows: lightening holes are formed in the end face of the guide flange along the circumferential direction, and the guide flange is fixed on the bullet main body through screws arranged in the circumferential direction.
The further technical scheme of the invention is as follows: the connecting piece includes magnet and sealing cap, and magnet passes through sealing cap fixed mounting in the front end of bullet main part, uses with the magnet cooperation of structure tail end, realizes propelling movement bullet and the structure is connected at launch acceleration in-process.
The utility model provides a non-gyration body type structure thing high speed is gone into experimental emitter that waters which characterized in that: the launching mechanism is arranged on the supporting structure;
the launching mechanism comprises a power assembly, a propelling projectile and a horizontal tail guide rail, and the non-rotary body type structure is arranged at the front end of the propelling projectile; the power assembly drives the propelling bullet to do linear motion along a set track, so that the non-rotary body type structure is pushed to do accelerated motion along the horizontal tail guide rail until the non-rotary body type structure flies out of the horizontal tail guide rail.
The specific implementation process is as follows: when carrying out non-solid of revolution structure and going into water the experiment, before promoting the transmission, need fix the promotion bullet, promote the bullet after preventing launching tube angle lifting and slide under the action of gravity, simultaneously, need consider before the transmission to promote the bullet and the stable contact of structure and with the quick separation between them after finishing with higher speed. In the process of pushing acceleration, air tightness and an acceleration stroke need to be considered, and stability of the process of pushing acceleration also needs to be considered.
Before the transmission, promote the bullet through breaking the bolt fastening in the launching tube afterbody, the structure tail end face adsorbs on the terminal surface magnet before the propelling movement bullet, has realized that propelling movement bullet and the whole gliding under the action of gravity of structure can not be in the launching tube lifting process. In the acceleration process, the gas tightness has been guaranteed to the appearance of base, and the length of stock has corresponded the length of gun barrel, has guaranteed that the promotion bullet can whole acceleration to the structure, and the front end guide rail of installation non-solid of revolution structure can reciprocate and fix by a certain margin to guarantee that the stock front end is just to the structure focus, realize pushing to pass power steadily between bullet and the structure, including the adsorption of magnet, realized the stable acceleration process of structure.
Advantageous effects
The invention has the beneficial effects that: because the guide flange limits the position of the long rod of the bullet main body, the moment possibly generated in the pushing acceleration process is basically eliminated, the bending moment acting on the long rod in the pushing process is eliminated, and the stability of the pushing process is improved; the hollow long rod structure is beneficial to reducing the structural mass of the launching propelling projectile so as to improve the final launching speed; the structure is fixed by adopting the magnetic attraction principle, so that parts such as the bullet holder and the like are prevented from being frequently replaced, and the problem of air tightness between the launching tube and the bullet holder base and the like caused by excessive abrasion on the launching device is avoided;
the tailstock is connected through the long rod, so that the overall weight of the propelling projectile can be lightened, the whole process that the structural object which cannot be placed into the launching tube is accelerated in the propelling projectile can be subjected to the thrust of the front end of the long rod, and the propelling stroke of the propelling projectile on the structural object is guaranteed. The base not only provides a base for the fixed connection of other parts, but also ensures the air tightness of emission due to the appearance of the revolving body.
The invention realizes the high-speed water-entering launching process of the non-revolving body structure, has simple structure, convenient and fast installation and low cost, and can provide stable pushing and accelerating functions for the high-speed water-entering experiment of the non-revolving body structure.
Drawings
FIG. 1 is a schematic view of the overall structure;
FIG. 2 is a schematic view of a tailstock structure;
FIG. 3 is a schematic view of a snap-off screw configuration;
FIG. 4 is a schematic view of a guide flange configuration;
FIG. 5 is a schematic view of a seal cap construction;
FIG. 6 is a schematic view of a magnet configuration;
FIG. 7 is a schematic view of a long rod construction;
description of reference numerals: the device comprises a tailstock, 2 breaking screws, 3 guiding flanges, 4 sealing caps, 5 magnets, 6 long rods and 7 guiding flange fixing screws.
Detailed Description
The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
The present design is described in detail below with reference to the figures and the detailed description.
Fig. 1 shows the overall structure of the push bullet, fig. 2 shows the specific structure of the tailstock, fig. 3 shows the structural schematic of the snap screw, fig. 4 shows the specific geometric structure of the guide flange, fig. 5 shows the structure of the sealing cap, fig. 6 shows the specific geometric structure schematic of the magnet, and fig. 7 shows the specific structure of the long rod.
As shown in fig. 1, the present embodiment is a pusher-spring structure, which includes a tailstock 1, a snapping screw 2, a guide flange 3, a sealing cap 4, a magnet 5 and a long rod 6.
As shown in fig. 2, the tailstock 1 is a revolving body, only one boss with internal threads is arranged at the front end of the tailstock for reducing the weight so as to fix the long rod, meanwhile, in order to ensure good air tightness, the tailstock is of a concave structure, the outer edge wall surface is reserved, and a threaded hole for installing the snapping screw 2 is arranged at the circle center of a concave plane;
as shown in fig. 4, the outer edge of the guide flange 3 is attached to the inner wall surface of the launching tube, and the inner circle of the guide flange is matched with the long rod 6 to ensure that the position of the long rod is not deviated;
as shown in fig. 7, the long rod 6 is connected with the tailstock, a threaded hole for connecting the guide flange 3 is reserved in the middle, the sealing cap 4 is arranged at the front end, and the magnet 5 is embedded in a hole reserved at the front end of the sealing cap 4.
As shown in fig. 3, the snapping screw 2 is fixedly connected with a threaded hole on the tailstock 1 through a tail end thread; the long rod 6 is directly and fixedly connected with a threaded hole at the front end of the tailstock 1 through a tail end thread; the guide flange is fixedly connected with a long rod 6 through a screw 7;
as shown in fig. 5 and 6, the sealing cap 4 is fixedly connected with the long rod 6 through interference fit; the magnet 5 is embedded in the front end of the sealing cap 4 through interference fit.
The installation and use of the present invention will now be described with reference to the accompanying drawings.
When the long rod 6 is installed, the long rod 6 is connected to the tailstock 1 through threads, and the long rod 6 is perpendicular to the plane of the tailstock 1 when the long rod is installed; secondly, fixing the guide flange 3 in the middle of the long rod 6 through 4 flange fixing screws 7; then, after the magnet 5 is arranged at the front end of the sealing cap 4, the sealing cap 4 is arranged at the front end of the long rod 6, so that the good sealing performance of the sealing cap is ensured; and finally, installing the snapping screw at the rear end of the tailstock through threads.
During the experiment, put into the launching tube with the propelling movement bullet of installing, place the structure on the slide rail, ensure 6 front ends of stock and the contact of structure, make magnet 5 can adsorb the structure, then will promote the bullet with breaking screw 2 and temporarily be fixed in the launching tube tail, the propelling movement bullet can not receive gravity gliding when launching tube and slide rail promote launch angle with the structure whole like this. During the transmission, high-pressure gas's release can produce very big thrust to promoting the bullet, and the screw of breaking is broken this moment, and the promotion bullet pushes structure thing forward on the slide rail under the high-pressure gas effect, lasts before promoting the bullet to go out the pipe completely to the structure thing with higher speed, promotes to pop out after the pipe, and the structure thing also breaks away from the slide rail, and the promotion bullet is still on the slide rail this moment, and the structure thing receives the action of gravity and promotes the bullet separation. The whole process can realize the stable acceleration process of the non-revolving body structure, and the device is simple in structure, low in manufacturing cost and reusable, so that the device provides convenience for the development of the water-entering experiment of the non-revolving body structure under the existing experiment conditions.
In the embodiment, in order to realize the purpose of stable pushing, the air tightness of the launch tube is ensured through the shape and the size of the revolving body of the tailstock; at present, most launching devices use high-pressure gas as a power launching rack, a certain acceleration stroke is needed in the launching process, under the condition, the acceleration stroke of a propelling projectile is generally close to the length of a gun barrel (generally more than 6 meters), the length of the propelling projectile is equivalent to the length of the gun barrel, and at the moment, if the propelling projectile is designed to be an integral solid cylinder, the solid structure enables the propelling projectile to have overlarge mass and poor acceleration effect. The structure of this design is the mode that thin wall pipe and flange dish combine, and the stock design is hollow, has guaranteed when realizing losing the heavy purpose through the stock that the promotion bullet promotes the acceleration stroke when the structure thing promotes, can effectively lighten the weight of propelling movement bullet, when experiment emitter barrel diameter was about 0.2 meters, the whole quality of aluminium matter propelling movement bullet reduced 500 kilograms than the solid structure quality at least, uses the high pressure gas as the launcher of power, and weight reduction can greatly increased emission speed. Taking the example of launching 75 kg of non-revolving body structure by 6 m gun barrel, the final acceleration speed of the structure is increased from 15m/s which can be reached by solid gun barrel to more than 45m/s which can be reached by the invention, the calculation is given by the formula 1-4, and the formula is quoted from page 216 and 218 of the textbook 'strong impact test and testing technology' edited by Wusanling et al. Meanwhile, the long rod is arranged at the center of the tailstock so as to reduce the bending moment generated in the launching process, prevent the long rod from generating pushing moment when pushing a non-revolving body structure, and increase the stability of the launching process by installing the guide flange. In order to ensure the longitudinal stability of the structure during launching, the guide flange should be mounted near the front end of the long rod. The scheme realizes the stable launching process of different non-revolving body structures, particularly aircraft with wing structures, and ensures the requirement of high-speed launching of the non-revolving body structures. The whole process not only ensures the stability of the whole launching process, but also considers the simplicity of equipment installation.
P 0 V′ 0 ＝P(V 0 +Sx)' (3)
Wherein, the first and the second end of the pipe are connected with each other,
the virtual mass coefficient is determined by experimental debugging.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. A kind of launcher pushes the bullet, characterized by: the bullet comprises a bullet main body, a power receiving module, a guide module and a connecting piece; the connecting piece and the power receiving module are respectively arranged at the front end and the rear end of the bullet main body, the power receiving module is used for transmitting the driving force of the launching device to the bullet main body, and the connecting piece is used for being connected with a high-speed water inlet structure at the front end in the launching acceleration process;
the guide module is arranged on the bullet main body, and ensures that the structural object does not deviate along the axial direction in the launching acceleration process.
2. The launch device propelling bullet of claim 1, characterized in that: the material of the propelling bullet is aluminium.
3. The launch device propelling bullet of claim 1, characterized in that: the main body of the bullet is a hollow long rod, and the outer diameter of the main body of the bullet is smaller than the inner diameter of the launching gun barrel.
4. The launcher propelling bullet according to claim 3, wherein: the length of the long rod is consistent with that of the launching gun barrel.
5. The launch device propelling bullet of claim 1, characterized in that: the power receiving module comprises a tailstock and a snapping screw; the tailstock is a revolving body, is coaxially fixed at the rear end of the projectile main body and is in clearance fit with the launching gun barrel; before launching, the tailstock is connected with the tail part of the launching tube through a snapping screw, and is prevented from falling under the influence of gravity.
6. The launch device propelling bullet of claim 5, characterized in that: the tailstock and the connecting end of the long rod are provided with internal threads along the central shaft, the tail end of the long rod is provided with external threads, and the tailstock and the tail end of the long rod are coaxially connected through the threads.
7. The launch device propelling bullet of claim 1, characterized in that: the guide module is a guide flange, is coaxially sleeved on the outer peripheral surface of the projectile main body and is in clearance fit with the launching gun barrel, and the projectile main body is guaranteed not to deviate in the launching acceleration process.
8. The launch device propelling bullet of claim 7, characterized in that: lightening holes are formed in the end face of the guide flange along the circumferential direction, and the guide flange is fixed on the bullet main body through screws arranged in the circumferential direction.
9. The launch device propelling bullet of claim 1, characterized in that: the connecting piece includes magnet and sealing cap, and magnet passes through sealing cap fixed mounting in the front end of bullet main part, uses with the magnet cooperation of structure tail end, realizes propelling movement bullet and the structure is connected at launch acceleration in-process.
10. A launching device for a high-speed water-entering test of a non-gyrating structure by using a propelling projectile of the launching device as claimed in any one of claims 1 to 9, characterized in that: the launching mechanism is arranged on the supporting structure;
the launching mechanism comprises a power assembly, a propelling bullet and a horizontal tail guide rail, and the non-rotary body type structure is arranged at the front end of the propelling bullet; the power assembly drives the propelling bullet to do linear motion along a set track, so that the non-rotary body type structure is pushed to do accelerated motion along the horizontal tail guide rail until the non-rotary body type structure flies out of the horizontal tail guide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210419336.6A CN114857995B (en) | 2022-04-20 | 2022-04-20 | Launching device pushing bullet and launching device |
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| CN202210419336.6A CN114857995B (en) | 2022-04-20 | 2022-04-20 | Launching device pushing bullet and launching device |
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| CN114857995A true CN114857995A (en) | 2022-08-05 |
| CN114857995B CN114857995B (en) | 2024-01-16 |
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Cited By (1)
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| CN115618605A (en) * | 2022-10-18 | 2023-01-17 | 北京理工大学 | Interference fit-based adapter pre-pressing application modeling method |
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| CN115618605B (en) * | 2022-10-18 | 2024-03-22 | 北京理工大学 | Adapter pre-pressing application modeling method based on interference fit |
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| Publication number | Publication date |
|---|---|
| CN114857995B (en) | 2024-01-16 |
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