CN117302523A - Resistance-surface-variable parachute and parachute opening method - Google Patents
Resistance-surface-variable parachute and parachute opening method Download PDFInfo
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- CN117302523A CN117302523A CN202311405561.5A CN202311405561A CN117302523A CN 117302523 A CN117302523 A CN 117302523A CN 202311405561 A CN202311405561 A CN 202311405561A CN 117302523 A CN117302523 A CN 117302523A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 abstract 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/22—Load suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/22—Load suspension
- B64D17/38—Releasable fastening devices between parachute and load or pack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/62—Deployment
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- Aviation & Aerospace Engineering (AREA)
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Abstract
A resistance-variable parachute and a parachute opening method relate to the field of parachutes. The parachute with the variable resistance surface comprises a speed reducer, at least two groups of parachute ropes connected with the speed reducer, connecting belts corresponding to the parachute ropes in one-to-one correspondence, and at least one time delay separator, wherein each group of parachute ropes are arranged at intervals along the circumferential direction of the speed reducer, each group of parachute ropes are arranged at intervals along the radial direction of the speed reducer, one end of each connecting belt is connected with each corresponding group of parachute ropes, and the other end of each connecting belt is used for connecting the top of the speed reducer; the connecting belts corresponding to the groups of the umbrella ropes positioned on the inner side are respectively connected with the top of the parachute through a time delay separator, the lengths of the connecting belts corresponding to the groups of the umbrella ropes are sequentially increased from inside to outside, and the corresponding connecting belts are cut off after the time delay separators corresponding to the groups of the umbrella ropes are sequentially separated from inside to outside by a preset time. According to the variable resistance face parachute and the parachute opening method, the parachute ropes are restrained to restrain the full inflation degree of the canopy, so that the unfolding area of the parachute can be adjusted according to the parachute opening requirement.
Description
Technical Field
The application relates to the field of parachutes, in particular to a resistance-variable surface parachute and a parachute opening method.
Background
After the general air drop system is put in at a high speed, a single parachute is adopted to directly open the parachute and then stably land, and the safety of the air drop system is guaranteed, which cannot be realized under the normal condition, mainly because a larger speed difference is generated between the instantaneous expansion of a larger parachute area and the air drop object under the condition of high-speed parachute, and a larger impact overload is generated due to the action of inertia force, so that the parachute is destructively damaged, and the air drop object is damaged due to the larger impact overload.
In order to avoid the occurrence of the above situation, the general air drop system gradually decelerates by adopting the gradual unfolding of the multi-stage parachute when the air drop system is put in at a high speed, and finally the aim of safely landing the carried materials by the unfolding of the main parachute is realized, but in actual use, the unfolding time sequence control of the multi-stage parachute is complex, the number of the parachute systems is large, the weight is increased, and the cost is increased.
Therefore, there is a need for a parachute that has a simple structure and can reduce the number of parachutes in an air-drop system to meet the requirement of high-speed delivery of the air-drop system.
Disclosure of Invention
The object of the present application is to provide a variable resistance surface parachute and a parachute opening method, which can restrict the full inflation degree of the canopy by restricting the parachute ropes, thereby adjusting the unfolding area of the parachute according to the parachute opening requirement.
The application is realized in such a way that:
the application provides a variable resistance surface parachute, which comprises a parachute, at least two groups of parachute ropes connected to the parachute, connecting belts corresponding to the parachute ropes in one-to-one correspondence to the parachute ropes in each group, and at least one delay separator, wherein the parachute ropes in each group are arranged at intervals along the circumferential direction of the parachute, the parachute ropes in each group are arranged at intervals along the radial direction of the parachute, one end of each connecting belt is connected with each parachute rope in the corresponding group, and the other end of each connecting belt is used for connecting the top of the parachute; the connecting belts corresponding to the groups of the umbrella ropes positioned on the inner side are respectively connected with the top of the parachute through a time delay separator, the lengths of the connecting belts corresponding to the groups of the umbrella ropes are sequentially increased from inside to outside, and the corresponding connecting belts are cut off after the time delay separators corresponding to the groups of the umbrella ropes are sequentially separated from inside to outside by a preset time.
In some alternative embodiments, the drogue is connected with rope buckles connected with the parachute ropes in a one-to-one correspondence.
In some alternative embodiments, the central part of the connecting belt corresponding to the innermost group of parachute ropes is connected with the parachute through the fixing ropes, and when the corresponding connecting belt is cut off by the time delay separator corresponding to the innermost group of parachute ropes, the sum of the lengths of the fixing ropes and the cut connecting belt is larger than that of the connecting belt at the outer side.
The application also provides an opening method of the variable resistance surface parachute, which comprises the following steps:
step one, connecting a drag-surface-variable parachute with a parachute to carry out air drop;
step two, when the parachute is opened, the middle canopy is pulled to bear force through a group of connecting belts corresponding to the innermost parachute ropes, so that the middle canopy is stressed and inflated to be full;
thirdly, cutting off the corresponding connecting bands from the delay separator connected with the connecting bands corresponding to the innermost group of umbrella ropes until the preset time, enabling the middle umbrella to be impacted by air flow to move upwards, starting to inflate and tighten the umbrella cloth outside the middle umbrella cloth, driving the connecting bands corresponding to the group of umbrella ropes outside the innermost group of umbrella ropes to tighten, and repeating the third step until the umbrella cloth outside the middle umbrella cloth is inflated and fully tightened until the connecting bands corresponding to the groups of umbrella ropes are tensioned, and fully expanding and inflating the drogue.
The beneficial effects of this application are: the parachute with the variable resistance surface comprises a parachute, at least two groups of parachute ropes connected to the parachute, connecting belts corresponding to the parachute ropes in one-to-one mode, and at least one delay separator, wherein the parachute ropes in each group are arranged at intervals along the circumferential direction of the parachute, the parachute ropes in each group are arranged at intervals along the radial direction of the parachute, one end of each connecting belt is connected with each parachute rope in the corresponding group, and the other end of each connecting belt is used for connecting the top of the parachute; the connecting belts corresponding to the groups of the umbrella ropes positioned on the inner side are respectively connected with the top of the parachute through a time delay separator, the lengths of the connecting belts corresponding to the groups of the umbrella ropes are sequentially increased from inside to outside, and the corresponding connecting belts are cut off after the time delay separators corresponding to the groups of the umbrella ropes are sequentially separated from inside to outside by a preset time. According to the variable resistance face parachute and the parachute opening method, the parachute ropes are restrained to restrain the full inflation degree of the canopy, so that the unfolding area of the parachute can be adjusted according to the parachute opening requirement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a variable resistance surface parachute according to an embodiment of the present application in operation;
FIG. 2 is a schematic illustration of a variable drag surface parachute provided in an embodiment of the present application after inflation and deployment of the center canopy;
FIG. 3 is a schematic view of a variable drag surface parachute provided in an embodiment of the present application after inflation and deployment of both the center canopy and side canopy;
fig. 4 is a schematic view of another view of the variable drag surface parachute provided in the embodiments of the present application.
In the figure: 100. a drogue; 101. a central canopy; 102. edge canopy; 110. a middle umbrella rope; 111. edge umbrella ropes; 120. a first connecting band; 121. a second connecting band; 130. a delay separator; 140. rope buckles; 150. a fixing rope; 200. a parachute.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The characteristics and performances of the variable resistance surface parachute and the parachute opening method of the present application are described in further detail below with reference to examples.
As shown in fig. 1, 2, 3 and 4, the embodiment of the present application provides a drag surface variable parachute, which comprises a drag parachute 100, wherein the drag parachute 100 is formed by connecting a central parachute 101 positioned in the middle and an edge parachute 102 positioned at the outer side of the central parachute 101, the edges of the central parachute 101 and the edge parachute 102 are respectively connected with four rope buckles 140 which are arranged at intervals along the circumferential direction of the drag parachute 100, the four rope buckles 140 at the edge of the central parachute 101 are respectively connected with one middle parachute rope 110, the four rope buckles 140 at the edge of the edge parachute 102 are respectively connected with one edge parachute rope 111, one end, far away from the drag parachute 100, of the four middle parachute ropes 110 is connected with a first connecting belt 120, the other end of the first connecting belt 120 is connected with the top of the drag parachute 200, a time delay separator 130 is arranged at the middle of the first connecting belt 120, the middle of the first connecting belt 120 is cut off after a preset time interval, the time delay separator 130 is connected with the top of the parachute 200 through a fixed rope 150, and the cut off the first connecting belt 120 is made to have the cut off the first connecting belt 120 and the length of the fixed rope 150 and the length of the fixed rope is greater than the second connecting belt 121; one end of each of the four edge parachute ropes 111 is connected with a second connecting belt 121, the other end of each second connecting belt 121 is connected with the top of the parachute 200, and the length of each first connecting belt 120 is smaller than that of each second connecting belt 121.
The embodiment of the application also provides an opening method of the variable resistance surface parachute, which comprises the following steps:
step one, connecting a first connecting belt 120, a second connecting belt 121 and a fixed rope 150 of the variable resistance face parachute with the top surface of a parachute 200 respectively, and performing air drop on the variable resistance face parachute and the parachute 200;
step two, when the parachute 200 is opened, the four middle parachute ropes 110 are pulled through the first connecting belt 120 with the shortest length to enable the edges of the central parachute canopy 101 to bear force everywhere, so that the central parachute canopy 101 is firstly stressed to start to be inflated until the parachute is fully inflated, and at the moment, the parachute 100 only opens the central parachute canopy 101, and the parachute opening area is smaller;
step three, after the time delay separator 130 reaches a preset time, the corresponding first connecting belt 120 is cut off, the tensioning fixing rope 150 is loosened from the middle of the first connecting belt 120, the sum of the lengths of the cut first connecting belt 120 and the fixing rope 150 is larger than the length of the second connecting belt 121, the central canopy 101 is impacted by air flow to move upwards, the edge canopy 102 on the outer side of the central canopy 101 starts to be inflated and tightened, and drives the four edge canopy ropes 111 to be tensioned until the edge canopy 102 on the outer side of the central canopy 101 is inflated and fully inflated, the central canopy 101 and the edge canopy 102 of the parachute 100 are inflated fully, the parachute opening area is maximized, and the parachute 200 is decelerated and stably descends.
According to the variable resistance face parachute and the parachute opening method, the first connecting belt 120 and the second connecting belt 121 which are gradually lengthened from inside to outside are used for respectively restraining different canopy parts of the parachute 100 to be fully inflated in sequence, so that the unfolding area of the parachute 100 is adjusted according to parachute opening requirements, continuous multi-stage deceleration can be provided for high-speed throwing and deceleration of a small air drop system, the effect of effectively reducing parachute opening impact is achieved, and the deceleration and load reduction requirements during throwing of a general air drop system can be well met.
The middle part of the first connecting strap 120 is connected with the top of the parachute 200 through the fixing rope 150, and the time delay separator 130 cuts off the first connecting strap 120, so that the sum of the lengths of the cut first connecting strap 120 and the fixing rope 150 is larger than the length of the second connecting strap 121, and the position of the cut first connecting strap 120 can be restrained by the camping fixing rope 150, so that the first connecting strap 120 is prevented from being wound around the edge of the parachute rope 111 to influence the parachute opening process.
In other alternative embodiments, the variable resistance surface parachute may further include three or more groups of parachute ropes, each group of parachute ropes is connected to the top of the parachute through a corresponding connecting belt, the connecting belt corresponding to each group of parachute ropes located on the inner side is connected to the top of the parachute 200 through a delay separator 130, the lengths of the connecting belts corresponding to each group of parachute ropes are sequentially increased from inside to outside, and each delay separator corresponding to each group of parachute ropes is sequentially separated from inside to outside by a preset time and then cuts off the corresponding connecting belt.
The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Claims (4)
1. The parachute with the variable resistance surface comprises a parachute, and is characterized by further comprising at least two groups of parachute ropes connected to the parachute, connecting belts corresponding to the parachute ropes in one-to-one correspondence to the parachute ropes in each group, and at least one time delay separator, wherein the parachute ropes in each group are arranged at intervals along the circumferential direction of the parachute, the parachute ropes in each group are arranged at intervals along the radial direction of the parachute, one end of each connecting belt is connected with each parachute rope in the corresponding group, and the other end of each connecting belt is used for being connected with the top of the parachute; the connecting belts corresponding to the groups of the parachute ropes positioned on the inner side are respectively connected with the top of the parachute through the delay separators, the lengths of the connecting belts corresponding to the groups of the parachute ropes are sequentially increased from inside to outside, and the connecting belts corresponding to the groups of the parachute ropes are cut off after the delay separators are sequentially separated from inside to outside by preset time.
2. The variable resistance surface parachute according to claim 1, wherein the drag parachute is connected with rope buckles connected with the parachute ropes in one-to-one correspondence.
3. The variable resistance surface parachute according to claim 1, wherein the central portions of the connection bands corresponding to the innermost group of the parachute lines are connected to the parachute through fixing lines, and when the delay separator corresponding to the innermost group of the parachute lines cuts the corresponding connection band, the sum of lengths of the fixing lines and the cut connection band is made larger than that of the connection band on the outer side.
4. The parachute opening method of the variable drag surface parachute according to claim 1, comprising the steps of:
step one, connecting a drag-surface-variable parachute with a parachute to carry out air drop;
step two, when the parachute is opened, the middle canopy is pulled to bear force through the connecting belts corresponding to the innermost group of parachute ropes, so that the middle canopy is stressed to be inflated and fully inflated;
and thirdly, cutting off the corresponding connecting belt from the time delay separator connected with the connecting belt corresponding to the innermost group of the umbrella ropes until a preset time is reached, enabling the middle umbrella to receive airflow impact to move upwards, starting to inflate and tighten the umbrella cloth outside the middle umbrella cloth, driving the connecting belt corresponding to the innermost group of the umbrella ropes outside the umbrella ropes to tighten, repeating the third step until the umbrella cloth outside the middle umbrella cloth is inflated and fully tightened, and enabling the speed reducing umbrella to be fully unfolded and inflated and fully tightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405561.5A CN117302523A (en) | 2023-10-26 | 2023-10-26 | Resistance-surface-variable parachute and parachute opening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405561.5A CN117302523A (en) | 2023-10-26 | 2023-10-26 | Resistance-surface-variable parachute and parachute opening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117302523A true CN117302523A (en) | 2023-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311405561.5A Pending CN117302523A (en) | 2023-10-26 | 2023-10-26 | Resistance-surface-variable parachute and parachute opening method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117302523A (en) |
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2023
- 2023-10-26 CN CN202311405561.5A patent/CN117302523A/en active Pending
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