A launching mechanism suitable for external objects of different weights and its application

Abstract

The application provides a dropping mechanism suitable for different quality external attachments and application thereof. The dropping mechanism suitable for different quality external attachments comprises a fixed part and a hanging part, the hanging part comprises a hook and a lug for hanging the external attachment, the upper part of the hook is detachably fixed on the fixed part, a recess is arranged at the bottom of the hook, and the lug is arranged at the position of the recess of the hook. When the external attachment is subjected to downward load, the hook is broken at the recess so that the lug is separated from the hook. The dropping mechanism has the advantages of simple structure, miniaturization, portability, expandability, standardized design, batch processing and production, and the like, and has good stability, repeatability, precision and universality.

Description

Technical Field

[0001] This invention relates to the field of aircraft technology, and in particular to a release mechanism for external stores of different masses and its application. Background Technology

[0002] During the deployment of external stores by an aircraft, aerodynamic interference constantly exists between the external stores and the aircraft, affecting the trajectory and attitude of both, and consequently impacting the flight safety of the aircraft and the stability of the external store deployment. Therefore, maintaining the stability of external store deployment is of great significance for aircraft deployment test research, aircraft separation safety assessment, and aircraft and external payload design.

[0003] CN208684240U discloses an external cargo-carrying device for unmanned aerial vehicles (UAVs), including a lifting device. The upper end of the lifting device is equipped with an upper gripper for clamping the UAV body, and the lower end is equipped with a lower gripper for clamping an object. Both the upper and lower grippers include a transverse telescopic rod, with a clamping arm hinged to the left and right ends of the transverse telescopic rod. This external cargo-carrying device utilizes the upper gripper to clamp the UAV body while simultaneously using the lower gripper to clamp the object, resulting in drawbacks such as complex structure, poor stability, and limited versatility.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a dispensing mechanism suitable for external objects of different weights and its application. The dispensing mechanism has a simple structure and advantages such as miniaturization, portability, scalability, standardization design, and mass production capability. It also has good stability, repeatability, accuracy, and versatility.

[0006] This invention provides a delivery mechanism suitable for external objects of different weights, including a fixing part and a hanging part. The hanging part includes a hook and a lifting lug for hanging external objects. The upper part of the hook is detachably fixed to the fixing part. A groove is provided at the bottom of the hook. The lifting lug passes through the groove of the hook. When the external object is subjected to a downward load, the hook breaks at the groove to allow the lifting lug to detach from the hook.

[0007] Furthermore, the fixing part includes a fixing member, a locking member, and a connecting member. The upper part of the hook is detachably installed on the fixing member. The locking member is pressed onto the hook to lock the hook. The locking member is fixedly connected to the fixing member through the connecting member.

[0008] Furthermore, the fasteners include a left fastener and a right fastener arranged opposite to each other, and the hook is fixed between the left fastener and the right fastener.

[0009] Furthermore, the hook includes a U-shaped component, with suspension components at both ends of the U-shaped component. Slots are provided on the left and right fixing components facing the hook. The two sides of the U-shaped component are inserted into the slots of the left and right fixing components, respectively, and the suspension components at both ends of the U-shaped component are suspended above the slots of the left and right fixing components.

[0010] Furthermore, a positioning element is provided on the locking element, and a positioning groove matching the positioning element is provided on the fixing element. When the locking element is pressed onto the hook, the positioning element is inserted into the positioning groove.

[0011] Furthermore, the connector is a countersunk screw.

[0012] Furthermore, the material of the hook, the shape of the groove, and the depth of the groove are determined based on the mass and load of the external object.

[0013] Furthermore, the magnitude of the load is determined by computational solid mechanics software or material destructive testing.

[0014] Furthermore, the mass of the external attachment ranges from 10 grams to 100 kilograms.

[0015] The present invention also provides the application of the above-mentioned delivery mechanism in ground tests, wind tunnel tests or flight verification tests of aircraft.

[0016] The implementation of this invention has at least the following advantages:

[0017] 1) Simple structure: The delivery mechanism consists of only a few parts such as the fixing part and the hanging part, and the structure is simple.

[0018] 2) Miniaturization: The size of the delivery mechanism is comparable to that of the external hanging lug (or hook), thus saving rack space.

[0019] 3) Portability: The delivery mechanism can be used on different types of aircraft pylons, thus it can be applied to various test platforms such as ground tests, wind tunnel tests and flight verification tests.

[0020] 4) Scalability: As a basic unlocking device unit, the delivery mechanism can be used for various sophisticated external object delivery platforms such as cylinder-assisted delivery, electromagnetic-assisted delivery, and control-timed delivery, and has scalability.

[0021] 5) Standardized design: The delivery mechanism can be designed for the standard lifting lugs of GJB or QJ / QJA to meet the requirements of standard projectile delivery.

[0022] 6) It can be mass-produced; the components of the dispensing mechanism can be mass-produced through CNC machining.

[0023] 7) Stability: The delivery mechanism is rigidly connected to the external object through a hook, which can ensure the stability of the delivery process.

[0024] 8) Repeatability: The delivery mechanism can deliver external stores for different batches of tests by changing the hook. The hooks produced in batches have the same material properties and mechanical properties, which makes the delivery of external stores repeatable and solves the core problem of aircraft external store delivery tests.

[0025] 9) Precision: The hook of the delivery mechanism breaks under external force loading or impact, completing the delivery; by selecting specific materials and designing the groove depth and shape of the hook, the hook breaks under specific external force load or impact load, realizing the delivery process of external objects under precise setting conditions.

[0026] 10) Versatility: The delivery mechanism can deliver external attachments of different weights, ranging from 10-gram test models to 100-kilogram physical models, and can be used for ground tests, wind tunnel tests and flight verification tests of aircraft. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the dispensing mechanism according to one embodiment of the present invention;

[0029] Figure 2 This is a bottom view of the dispensing mechanism according to an embodiment of the present invention;

[0030] Figure 3 This is a top view of the dispensing mechanism according to an embodiment of the present invention;

[0031] Figure 4 This is a left view of the dispensing mechanism according to an embodiment of the present invention;

[0032] Figure 5 This is an exploded structural diagram of the delivery mechanism according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1: Hook; 11: Groove; 2: Lifting lug; 3: Locking component; 4: Left fixing component; 5: Right fixing component; 6, 7: Countersunk screws. Detailed Implementation

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application. As used herein, the singular form includes the plural form unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this description, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] Combination Figures 1 to 5 As shown, the delivery mechanism for external objects of different masses in this embodiment includes a fixing part and a hanging part. The hanging part includes a hook 1 and a lug 2 for hanging external objects. The upper part of the hook 1 is detachably fixed to the fixing part. A groove 11 is provided at the bottom of the hook 1. The lug 2 passes through the groove 11 of the hook 1. When the external object is subjected to a downward load, the hook 1 breaks at the groove 11 so that the lug 2 is detached from the hook 1.

[0040] In the delivery mechanism of this embodiment, the lifting lug 2 is a standard part of the external model. The delivery mechanism hangs the external object by hooking the lifting lug 2 with the hook 1. At the same time, the hook 1 is locked in a fixed position by the fixing part. When the external object is delivered, the downward load force is applied to the external object, causing the lifting lug 2 of the external object to move downward, so that the hook 1 is disconnected from the groove 11, thereby realizing the unlocking and delivery of the external object.

[0041] The fixing part is mainly used to fix the hanging part in a fixed position. The structure of the fixing part is not strictly limited. In one embodiment, the fixing part may include a fixing member, a locking member 3 and a connecting member. The upper part of the hook 1 is detachably installed on the fixing member. The locking member 3 is pressed on the hook 1 to lock the hook 1. The locking member 3 is fixedly connected to the fixing member through the connecting member.

[0042] Furthermore, the fixing components include a left fixing component 4 and a right fixing component 5 arranged opposite to each other, with the hook 1 fixed between the left fixing component 4 and the right fixing component 5. The hook 1 includes a U-shaped component, with suspension components at both ends of the U-shaped component. Slots are provided on the side of the left fixing component 4 and the right fixing component 5 facing the hook 1. The two sides of the U-shaped component are inserted into the slots of the left fixing component 4 and the right fixing component 5, respectively, and the suspension components at both ends of the U-shaped component are suspended above the slots of the left fixing component 4 and the right fixing component 5, respectively. At this time, the left side of the hook 1 passes through and is suspended on the left fixing component 4, and the right side of the hook 1 passes through and is suspended on the right fixing component 5. The lifting lug 2 of the external attachment is suspended below the hook 1. The deployment mechanism realizes the attachment of the aircraft to the external attachment by suspending the lifting lug 2 through the hook 1.

[0043] In addition, a positioning element is provided on the locking element 3, and a positioning groove matching the positioning element is provided on the fixing element. When the locking element 3 is pressed onto the hook 1, the positioning element is inserted into the positioning groove. The connecting element can be a countersunk screw. In this case, the launching mechanism can be fixed to the bracket by the locking element 3, the left fixing element 4, and the right fixing element 5 using countersunk screws 6 and 7. When the external object is subjected to an external force load or impact load, the external object is subjected to a downward load and moves, driving the lifting lug 2 downward as well. At the same time, the hook 1 is supported by the left fixing element 4 and the right fixing element 5, which are rigidly connected to the bracket, and remains relatively stationary. There is a tendency for relative movement between the lifting lug 2 and the hook 1. The hook 1 is subjected to a load exceeding the breaking strength and breaks. It is understandable that the structural strength of the lifting lug 2, locking component 3, left fixing component 4, right fixing component 5, and countersunk screw is stronger than that of the hook 1, so that only the hook 1 will break under external force load or impact load. After the hook 1 breaks, the lifting lug 2 is released from the constraint of the hook 1, realizing the constraint contact between the external load and the release mechanism, thereby completing the process of releasing the external load from the aircraft. Through the selection of the material of the hook 1 and the design of the depth of the groove 11, it is possible to carry different amounts of external loads while completing the precise release of external loads under external force or impact load.

[0044] Furthermore, the material of the hook 1, the shape of the groove 11, and the depth of the groove 11 are determined based on the mass and load of the external object. The hook 1 can be made of different materials, and the depth of the groove 11 directly determines the ultimate breaking strength of the hook 1. Changing the material of the hook 1 and the depth of the groove 11 allows for the unlocking and deployment of external objects with different masses and loads. In addition, the external force or impact load at the time of hook 1 breakage can be accurately calculated and calibrated using computational solid mechanics software or material destructive testing.

[0045] The delivery mechanism of this embodiment is suitable for external attachments weighing from 10 grams to 100 kilograms, and can be used for ground tests, wind tunnel tests, and flight verification tests of aircraft. Table 1 shows the hook material, groove shape and depth, and load parameters for external attachments of different weights.

[0046] Table 1. Hook material, groove shape and depth, and load parameters for external loads of different weights.

[0047]

[0048]

[0049] The delivery mechanism in this embodiment achieves miniaturization and a simple structure for external attachment delivery; it achieves standardization and portability and scalability; it achieves stability, repeatability, and accuracy in external attachment delivery; and it achieves versatility in external attachment delivery, with the weight of external attachments ranging from 10 grams of experimental models to 100 kilograms of physical models, making it suitable for ground testing, wind tunnel testing, and flight verification testing of aircraft.

[0050] The usage process for the delivery organization in this embodiment is as follows:

[0051] The delivery mechanism is fixed to the rack via locking part 3, left fixing part 4 and right fixing part 5 by countersunk screws 6 and 7. The left side of the hook 1 passes through and is suspended on the left fixing part 4, and the right side passes through and is suspended on the right fixing part 5. The lug 2 of the external attachment is suspended below the hook 1. The delivery mechanism enables the aircraft to load external attachments by suspending the lug 2 through the hook 1.

[0052] When the external attachment is subjected to an external force or impact load, it moves downwards, causing the lifting lug 2 to move downwards as well. Simultaneously, the hook 1 remains relatively stationary due to the support of the left and right fixing members 4 and 5, which are rigidly connected to the mounting frame. A tendency for relative movement occurs between the lifting lug 2 and the hook 1. The hook 1 then experiences a load exceeding its breaking strength and breaks. After the hook 1 breaks, the lifting lug 2 disengages from the hook 1, allowing the external attachment to contact the release mechanism, thus completing the release process from the aircraft.

[0053] By selecting the material of hook 1 and designing the depth of groove 11, the system can accurately deploy objects under external force or impact loads while simultaneously enabling the mounting of different external load masses. The external force or impact load at which hook 1 breaks can be precisely calculated and calibrated using computational solid mechanics software or destructive material testing.

[0054] The advantages of the delivery mechanism in this embodiment compared to the prior art are as follows:

[0055] 1. Existing external stores delivery mechanisms lack versatility; the delivery mechanism in this embodiment solves the problem of versatility, and can deliver various external stores to various types of aircraft through structural design and standardization.

[0056] 2. The stability of the deployment of external stores is the core issue in the deployment process, and there is currently no good solution in wind tunnel tests, ground tests, and flight tests. The deployment mechanism in this embodiment achieves accurate, stable, and repeatable deployment of external stores by applying the research methods of materials mechanics and impact and failure mechanics through structural design.

[0057] 3. The delivery mechanism in this embodiment is designed with simplification, miniaturization, and standardization, and is also portable and scalable. The universal design of the delivery mechanism can cover the requirements of aircraft ground tests, wind tunnel tests, and flight verification tests. The design of the delivery mechanism achieves the stability, repeatability, and accuracy of external stores delivery, meeting the core technical requirements of aircraft external stores delivery.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dispensing mechanism suitable for different quality overhangs, characterized in that, The device comprises a fixed part and a hanging part, the hanging part comprises a hook and a lug for hanging an external object, the upper part of the hook is detachably fixed on the fixed part, a groove is arranged at the bottom of the hook, the lug is arranged at the position of the groove of the hook, when the external object is subjected to a downward load, the hook is broken at the groove so that the lug is separated from the hook, the fixed part comprises a fixing member, the fixing member comprises oppositely arranged left and right fixing members, the hook is fixed between the left and right fixing members, the hook comprises a U-shaped member, suspension members are arranged at the two ends of the U-shaped member respectively, the left and right fixing members are respectively provided with insertion grooves on the side facing the hook, the two sides of the U-shaped member are respectively inserted into the insertion grooves of the left and right fixing members, the suspension members at the two ends of the U-shaped member are respectively suspended above the insertion grooves of the left and right fixing members, the material of the hook, the shape of the groove and the depth of the groove are determined according to the mass and load of the external object.

2. The dispensing mechanism of claim 1, wherein, The fixed part further comprises a locking member and a connecting member, the upper part of the hook is detachably mounted on the fixing member, the locking member is arranged on the hook to lock the hook, and the locking member is fixedly connected with the fixing member through the connecting member.

3. The dispensing mechanism of claim 2, wherein, A positioning member is arranged on the locking member, and a positioning groove matched with the positioning member is arranged on the fixing member, when the locking member is arranged on the hook, the positioning member is inserted into the positioning groove.

4. The dispensing mechanism of claim 2, wherein, The connecting member is a countersunk screw.

5. The dispensing mechanism of claim 1, wherein, The size of the load is determined by a solid mechanics software or a material destruction test.

6. The dispensing mechanism of claim 1, wherein, The mass of the external object is 10g to 100kg.

7. Application of the delivery mechanism of any one of claims 1-6 in ground test, wind tunnel test or flight verification test of an aircraft.

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