A two-stage parachute structure for ammunition parachute

Abstract

The present invention discloses a two-stage parachute structure for ammunition parachutes, which belongs to the technical field of parachute applications. The two-stage parachute structure includes a first-stage parachute structure and a second-stage parachute structure. By using the corresponding arrangement of the two parachute structures, the combination arrangement and sequential operation of the two-stage parachute can be realized, thereby realizing the secondary deceleration of weapons and ammunition, ensuring that the dynamic load of the weapons and ammunition before the main parachute is opened does not exceed a certain value, avoiding damage to the parachute fabric, the ammunition structure, and the internal instruments and meters of the ammunition due to excessive dynamic load when the main parachute is opened, and ensuring the normal operation of the parachute system and the ammunition. The two-stage parachute structure for ammunition parachutes of the present invention has a simple structure, is easy to set up and control, can effectively realize the normal operation of weapons and ammunition under transonic or supersonic conditions, ensures the normal operation of the parachute main parachute, the ammunition structure, and the internal instruments and meters of the ammunition, improves the reliability and stability of the operation of weapons and ammunition, and has good application effects and promotion value.

Description

Technical Field

[0001] The invention belongs to the technical field of parachute application, and in particular relates to a two-stage parachute cabin structure for an ammunition parachute. Background Art

[0002] With the continuous development of weapon technology and aviation technology, weapons and ammunition working under high Mach number conditions have appeared one after another and are developing rapidly. Correspondingly, the attitude adjustment and deceleration of such weapons and ammunition have brought new challenges to parachute technology.

[0003] For parachutes operating at transonic or even supersonic conditions, the parachute opening dynamic load may exceed the strength of the parachute fabric, causing the canopy to be damaged, which in turn causes the parachute to fail to work properly. At the same time, excessive parachute opening dynamic load is also detrimental to the ammunition structure and its internal instruments and meters, and may even cause weapons and ammunition to fail to work properly. Therefore, for parachutes used in ammunition operating at transonic or supersonic conditions, it should be ensured that the overload when the parachute is opened does not exceed the allowable range. Summary of the invention

[0004] In response to one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a two-stage parachute cabin structure for an ammunition parachute, which can achieve secondary deceleration of weapons and ammunition under transonic or even supersonic conditions, ensure the normal operation of the parachute system, and ensure the normal operation of the parachute system and ammunition.

[0005] To achieve the above-mentioned object, the present invention provides a two-stage parachute cabin structure for an ammunition parachute, which comprises a first-stage parachute cabin and a second-stage parachute cabin;

[0006] The first-stage parachute compartment has a cavity with an opening at one end, which is used to connect and accommodate a first-stage parachute; a parachute compartment cover is provided on the open side of the first-stage parachute compartment, and the parachute compartment cover is connected to the first-stage parachute compartment through a plurality of connecting pieces, so as to enclose the first-stage parachute in the first-stage parachute compartment; accordingly, a parachute opener is provided corresponding to each of the connecting pieces, which is used to release the connection between the parachute compartment cover and the first-stage parachute compartment when the first-stage parachute is opened;

[0007] The secondary parachute compartment has a cavity open at one end, which is used to connect and accommodate a secondary parachute; the end of the secondary parachute compartment facing away from the exit side is connected to the ammunition, and the other end is controllably detachably connected to the end of the primary parachute compartment facing away from the exit side, thereby achieving the encapsulation of the secondary parachute in the secondary parachute compartment.

[0008] As a further improvement of the present invention, a disassembly and assembly component is provided corresponding to the controllable detachable connection between the first-stage parachute compartment and the second-stage parachute compartment; the disassembly and assembly component is a snap connector, a magnetic connector or a pin connector.

[0009] As a further improvement of the present invention, the disassembly and assembly assembly is a pin pulling connector, which includes a plurality of pin pullers arranged at intervals along the annular direction;

[0010] The ends of the first-level parachute compartment and the second-level parachute compartment that are connected to each other are mounted on each other; the pins of each pin puller match the walls of the two parachute compartments at the same time in the initial state, and can release the connection of the first-level parachute compartment at the end of the second-level parachute compartment when working synchronously.

[0011] As a further improvement of the present invention, the umbrella opener is a pin latch, and its extendable pin is arranged opposite to or abutting against the end of the connecting member.

[0012] As a further improvement of the present invention, the latch is one or more of an electromagnetic latch, a spring latch, a gunpowder latch, and a memory alloy latch.

[0013] As a further improvement of the present invention, the pull pin is arranged along the thickness direction of the walls of the two parachute compartments, that is, the axis of the pull pin is perpendicular to the axis of the two parachute compartments.

[0014] As a further improvement of the present invention, one end of the first-stage parachute cabin connected to the second-stage parachute cabin is arranged in the form of a stepped shaft and forms an annular step surface, so that the end of the first-stage parachute cabin can be embedded in the second-stage parachute cabin and abut the end of the second-stage parachute cabin with the annular step surface.

[0015] As a further improvement of the present invention, a parachute connecting mechanism is arranged in the first-stage parachute compartment and / or the second-stage parachute compartment for connecting the parachute ropes.

[0016] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0017] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0018] (1) The two-stage parachute structure for ammunition parachutes of the present invention comprises a first-stage parachute compartment and a second-stage parachute compartment. By means of the corresponding arrangement of the two parachute compartments, a first-stage parachute (deceleration parachute) and a second-stage parachute (main parachute) can be combined and operated in sequence, thereby achieving a second-stage deceleration of weapons and ammunition, ensuring that the dynamic load of the weapons and ammunition does not exceed a certain value before the main parachute is opened, avoiding damage to the parachute fabric, the ammunition structure and the internal instruments of the ammunition due to excessive dynamic load when the main parachute is opened, ensuring the normal operation of the parachute system and the ammunition, and providing a guarantee for the normal operation of weapons and ammunition in a transonic or supersonic environment;

[0019] (2) The two-stage parachute cabin structure for an ammunition parachute of the present invention utilizes the corresponding arrangement of multiple connecting members between the cabin cover and the first-stage parachute cabin to effectively realize the reliable packaging of the first-stage parachute in the first-stage parachute cabin, and through the corresponding arrangement and synchronous operation of multiple parachute openers, effectively realizes the rapid opening of the cabin cover, thereby providing a guarantee for the normal operation of the first-stage parachute (i.e., the deceleration parachute);

[0020] (3) The two-stage parachute structure for an ammunition parachute of the present invention can ensure the reliable connection of the two parachute compartments in the initial state through the combined arrangement of the ends of the first parachute compartment and the second parachute compartment, and the corresponding arrangement of the controllable disassembly and assembly components, thereby ensuring the reliability and stability of the two-stage parachute arrangement. Furthermore, through the corresponding control of the controllable disassembly and assembly components, the two parachute compartments can be quickly separated, and the second parachute can be correspondingly opened. The control accuracy of the entire process is high and the reliability is strong.

[0021] (4) The two-stage parachute structure for an ammunition parachute of the present invention is provided with a pin puller to controllably disassemble and connect the two parachute compartments. This is not only simple to control and highly accurate, but also the pin puller can withstand a large deceleration parachute opening force, ensuring that the two parachute compartments will not separate during the opening of the first-stage parachute, thereby ensuring the accuracy of the operation of the two-stage deceleration parachute system.

[0022] (5) The two-stage parachute cabin structure for ammunition parachutes of the present invention has a simple structure and is easy to set up and control. It can effectively realize the normal operation of weapons and ammunition under transonic or supersonic conditions, ensure the normal operation of the main parachute, ammunition structure and internal instruments of the ammunition, improve the reliability and stability of the operation of weapons and ammunition, and has good application effect and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic diagram of the overall structure of a two-stage parachute cabin structure for an ammunition parachute according to an embodiment of the present invention;

[0024] Figure 2 AA sectional view of a two-stage parachute cabin structure for an ammunition parachute according to an embodiment of the present invention;

[0025] Figure 3 BB is a cross-sectional view of a two-stage parachute cabin structure for an ammunition parachute according to an embodiment of the present invention;

[0026] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0027] 1. Parachute canopy; 2. First-stage parachute compartment; 3. Parachute opener; 4. Second-stage parachute compartment; 5. Pin puller; 6. Connector; 7. Ammunition;

[0028] 201. First-stage parachute connection mechanism;

[0029] 501, pull pin; 502, main body; 503, cable; 504, fixing part. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Example:

[0036] See also Figures 1 to 3 The two-stage parachute compartment structure for ammunition parachutes in the preferred embodiment of the present invention includes a coaxially arranged first-stage parachute compartment 2 and a second-stage parachute compartment 4, which are used to accommodate the first-stage parachute and the second-stage parachute, respectively. Among them, the first-stage parachute is a small-area deceleration parachute, and the second-stage parachute is a large-area main parachute. When the parachute needs to be opened during the high-speed operation of weapons and ammunition, in order to avoid excessive dynamic load when opening the parachute, before the main parachute (i.e., the second-stage parachute) of the parachute is opened, the deceleration parachute (i.e., the first-stage parachute) can be opened to decelerate the weapons and ammunition, and the main parachute can be opened when the running speed of the ammunition drops below a certain rate value. In this way, the damage to the ammunition caused by overload when opening the parachute can be effectively avoided, and the normal operation of the main parachute can also be effectively guaranteed.

[0037] Specifically, the first-stage parachute compartment 2 and the second-stage parachute compartment 4 in the preferred embodiment are as follows: Figure 1 As shown in , the first-stage parachute compartment 2 is controllably detachably connected to one end of the second-stage parachute compartment 4, and the two are preferably coaxially arranged; accordingly, the end of the second-stage parachute compartment 4 facing away from the first-stage parachute compartment 2 is connected to the ammunition 7.

[0038] Furthermore, the first-stage parachute compartment 2 in the preferred embodiment is a cylindrical structure with one end closed, a cavity for accommodating the first-stage parachute is formed inside the first-stage parachute compartment, and a first-stage parachute connecting mechanism 201 is provided at the bottom (closed side) for connecting the first-stage parachute rope, such as Figure 1 , 2 At the same time, the closed end of the first-stage parachute compartment 2 is correspondingly connected to the second-stage parachute compartment 4, and the open end thereof is provided with a parachute compartment cover 1 for enclosing the first-stage parachute in the first-stage parachute compartment 2.

[0039] Specifically, the canopy cover 1 is connected to the wall of the first-stage canopy 2 through a plurality of connecting members 6 arranged at intervals in an annular direction. The connecting members 6 in the preferred embodiment are countersunk screws. In order to ensure the stable connection of the connecting members 6 without increasing the wall thickness of the first-stage canopy 2, a connecting block structure is provided on the inner wall of the first-stage canopy 2 corresponding to the connecting members 6 in the preferred embodiment, for example Figure 2 As shown in FIG. 4 , there are four arranged at intervals along the circumferential direction.

[0040] Furthermore, in order to ensure that the canopy cover 1 can be reliably separated from the first-stage canopy 2 during the operation of the ammunition 7, a parachute opener 3 is provided corresponding to the connecting member 6 to push the canopy cover 1 away from the first-stage canopy 2, thereby realizing the opening of the first-stage parachute. Preferably, the parachute opener 3 and the connecting member 6 are provided in a one-to-one correspondence, and the two are further preferably provided coaxially, and the end of the parachute opener 3 is directly opposite to or abuts against the end of the connecting member 6, and then when the parachute opener 3 is working, the driving end of the parachute opener 3 can drive the connecting member 6 to move in a direction away from the second-stage canopy 4 until the connecting member 6 releases the connection between the canopy cover 1 and the first-stage canopy 2.

[0041] In a specific embodiment, the parachute opener 3 is a latch, which can be one or more of an electromagnetic latch, a spring latch, a gunpowder latch, and a memory alloy latch. By controlling the power supply or ignition of the latch, the corresponding telescopic movement of the latch can be achieved, thereby achieving the ejection of the connecting piece 6 and the umbrella cover 1.

[0042] Furthermore, the secondary parachute compartment 4 in the preferred embodiment is also a cylindrical structure with one end closed, and the closed end of the primary parachute compartment 2 is connected to its open end, which is used to close the secondary parachute compartment 4, that is, to achieve the packaging of the secondary parachute. In the preferred embodiment, a controllable disassembly assembly component is provided corresponding to the controllable detachable connection between the primary parachute compartment 2 and the secondary parachute compartment 4. The disassembly assembly component in the preferred embodiment can be a snap connector, a magnetic connector, a pin connector, etc. provided corresponding to the two parachute compartments.

[0043] like Figure 2 As shown in the figure, the controllable disassembly and assembly component in the preferred embodiment is a pin puller connector, which includes a plurality of pin pullers 5 arranged at intervals along the circumferential direction. Specifically, the pin puller 5 in the preferred embodiment includes a pin puller 501, a main body 502, a cable 503, and a fixing member 504. The cable 503 is connected to the main body 502 and is used to supply power to the main body 502 to achieve the telescopic control of the pin puller 501. At the same time, the main body 502 is connected to the bottom of the first-stage parachute compartment 2 through a plurality of fixing members 504, and the end of the pin puller 501 is directly opposite to the inner wall surface of the first-stage parachute compartment 2.

[0044] Furthermore, the inner diameter of the open end of the secondary parachute compartment 4 is not less than the outer diameter of the closed end of the primary parachute compartment 2, so that the closed end of the primary parachute compartment 2 can be coaxially embedded in the open end of the secondary parachute compartment 4. Accordingly, a first connecting hole penetrating the inner and outer wall surfaces is provided on the side wall surface of the primary parachute compartment 2 corresponding to the pull pin 501, and a second connecting hole is provided on the inner wall surface of the secondary parachute compartment 4 at the same time. The second connecting hole is a blind hole or a through hole, so that the first connecting hole can be coaxially aligned with the corresponding second connecting hole after the primary parachute compartment 2 and the secondary parachute compartment 4 are matched with each other. Preferably, one end of the primary parachute compartment 2 connected to the secondary parachute compartment 4 is arranged in the form of a stepped shaft, and an annular step surface is formed, such as Figure 1As shown in , the end of the first-stage parachute compartment 2 can then be embedded in the second-stage parachute compartment 4 and abut the end surface of the second-stage parachute compartment 4 with an annular step surface, so that the first connecting hole and the second connecting hole can be quickly aligned during setting.

[0045] Through the above arrangement, in the initial state, the pull pin 501 can coaxially pass through the first connection hole and the second connection hole to achieve the corresponding connection between the two parachute cabins, such as Figure 3 When the cable 503 is powered and the main body 502 is working, the pull pin 501 can be retracted to a certain distance to release the matching of the secondary parachute cabin 4, for example, retracted to Figure 3 By setting up a plurality of pin pullers 5 at the same time, a reliable connection between the two parachute compartments can be achieved, and by working a plurality of pin pullers 5 at the same time, a rapid separation between the two parachute compartments can be achieved, thereby opening the secondary parachute compartment 4 and completing the opening of the secondary parachute.

[0046] The two-stage parachute compartment structure obtained by the above-mentioned arrangement preferably has the following working process: when the ammunition 7 needs to open the parachute while running at high speed, the ammunition 7 outputs a parachute opening signal to the parachute opener 3, the parachute opener 3 is powered on or ignited to push the parachute compartment cover 1 away from the first-stage parachute compartment 2, the first-stage parachute compartment 2 works to open a small-area first-stage parachute, thereby achieving deceleration of the ammunition 7; when the ammunition 7 is decelerated to a predetermined value, the ammunition 7 outputs a parachute opening signal again, the pin puller 5 is powered on or ignited to separate the first-stage parachute with the first-stage parachute compartment 2 from the second-stage parachute compartment 4, the second-stage parachute compartment 4 works, and the second-stage parachute opens.

[0047] The two-stage parachute cabin structure for ammunition parachutes in the present invention has a simple structure and is easy to set up. It can effectively achieve two-stage deceleration of ammunition, reduce the dynamic load of the main parachute when it is opened, avoid damage to the parachute fabric, ammunition structure and internal instruments of the ammunition due to excessive dynamic load when the main parachute is opened, ensure the normal operation of the parachute system and ammunition, provide a guarantee for the normal operation of weapons and ammunition under transonic or supersonic conditions, and have good application effect and promotion value.

[0048] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-stage parachute structure for an ammunition parachute, characterized in that: It includes a primary parachute compartment and a secondary parachute compartment; The first-stage parachute compartment has a cavity with an opening at one end, which is used to connect and accommodate a first-stage parachute; a parachute compartment cover is provided on the open side of the first-stage parachute compartment, and the parachute compartment cover is connected to the bulkhead of the first-stage parachute compartment through a plurality of connecting pieces arranged at intervals in an annular direction, so as to enclose the first-stage parachute in the first-stage parachute compartment; Correspondingly, a parachute opener is respectively provided for each of the connecting members, and the parachute openers are provided one-to-one with the connecting members, and the ends of the parachute openers are directly opposite to or abut against the ends of the connecting members, and then when the parachute openers are working, the driving ends of the parachute openers can drive the connecting members to move in a direction away from the secondary parachute compartment until the connecting members release the connection between the parachute compartment cover and the primary parachute compartment; The secondary parachute compartment has a cavity with one end open, which is used to connect and accommodate the secondary parachute; One end of the secondary parachute compartment facing away from the exit is connected to the ammunition, and the other end is controllably detachably connected to one end of the primary parachute compartment facing away from the exit, thereby achieving the packaging of the secondary parachute in the secondary parachute compartment; A disassembly and assembly component is provided corresponding to the controllable detachable connection between the first-level parachute compartment and the second-level parachute compartment; the disassembly and assembly component is a pin-pulling connector, which includes a plurality of pin pullers arranged at circumferential intervals; the ends of the first-level parachute compartment and the second-level parachute compartment connected to each other are sleeved on each other; the pins of each pin puller simultaneously match the bulkheads of the two parachute compartments in the initial state, and can release the connection of the first-level parachute compartment at the end of the second-level parachute compartment when working synchronously.

2. The two-stage parachute structure for an ammunition parachute according to claim 1, wherein: The umbrella opener is a pin latch, and an extendable pin of the umbrella opener is arranged opposite to or abutting against the end of the connector.

3. The two-stage parachute structure for an ammunition parachute according to claim 2, wherein: The latch is one or more of an electromagnetic latch, a spring latch, a gunpowder latch, and a memory alloy latch.

4. The two-stage parachute structure for an ammunition parachute according to any one of claims 1 to 3, wherein: The pull pin is arranged along the thickness direction of the bulkheads of the two parachute compartments, that is, the axis of the pull pin is perpendicular to the axis of the two parachute compartments.

5. The two-stage parachute structure for an ammunition parachute according to any one of claims 1 to 3, wherein: One end of the first-stage parachute compartment connected to the second-stage parachute compartment is arranged in a stepped shaft and is formed with an annular step surface, so that the end of the first-stage parachute compartment can be embedded in the second-stage parachute compartment and abut the end of the second-stage parachute compartment with the annular step surface.

6. The two-stage parachute cabin structure for an ammunition parachute according to any one of claims 1 to 3, wherein: A parachute connecting mechanism is arranged in the first-stage parachute compartment and / or the second-stage parachute compartment for connecting the parachute ropes.

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