A human parachute test capsule and method of testing

Abstract

The application relates to a human parachute air-drop test bomb and a test method, and relates to the field of air-drop. The human parachute air-drop test bomb comprises a test bomb body provided with a containing groove at a tail end, a parachute bag, a force gauge and an opening parachute controller arranged in the containing groove, and the opening parachute controller is used for controlling the parachute bag to open; the parachute bag is internally provided with a test parachute, a spring guide parachute and a ring-shaped parachute; the force gauge is connected with the test bomb body and the test parachute rope at two ends respectively; the spring guide parachute rope is connected with the test parachute; and the ring-shaped parachute rope is connected with the tail end of the test bomb body. The human parachute air-drop test bomb and the test method provided by the application can simulate the real opening process of the parachute, ensure the stability of the maximum opening dynamic load measurement data, reduce the requirement for the air-drop speed of an aircraft, and can significantly reduce the implementation difficulty and test cost of the air-drop test.

Description

Technical Field

[0001] This application relates to the field of airdrops, and more specifically, to a test bomb for airdropping a human parachute and a test method thereof. Background Technology

[0002] Maximum opening force is an important performance test item in the development process of human parachutes. Currently, the common methods for measuring the maximum opening dynamic load are: 1. High-speed dummy drop in the air; 2. High-speed test missile drop in the air.

[0003] The specific method for high-speed dummy airdrop is as follows: A parachute is attached to the dummy. After the aircraft carrying the dummy ascends to a predetermined altitude and speed, the aircraft releases the dummy via a separation device. After the dummy leaves the aircraft, the parachute engages, and the maximum opening dynamic load of the parachute is measured using the dummy's overload or mechanical sensors. This method can simulate the real parachute opening process to the greatest extent possible. However, due to the poor aerodynamic stability of the dummy, the measured maximum opening dynamic load is not stable and cannot be accurately measured. This method places certain requirements on the carrier aircraft, requiring it to be capable of airdropping the dummy and to reach the predetermined altitude and speed.

[0004] The specific method for air-dropping a high-speed test bomb is as follows: A parachute is connected to the low-drag air-drop bomb. After the aircraft carrying the bomb ascends to the predetermined altitude and speed, it releases the bomb via a separation device. After the bomb leaves the aircraft, the parachute engages, and the maximum dynamic load of the parachute deployment is measured using the bomb's overload or mechanical sensors. The low-drag air-drop bomb exhibits good aerodynamic stability, resulting in good stability of the measured maximum deployment dynamic load. However, because the aerodynamic drag of the low-drag air-drop bomb is much lower than that of the human body, the measured maximum deployment dynamic load tends to be higher. This method also places certain requirements on the carrier aircraft, requiring it to be capable of air-dropping the low-drag bomb and to reach the predetermined altitude and speed. Summary of the Invention

[0005] The purpose of this application is to provide a test bomb and test method for airdropping a human parachute, which simulates the actual parachute opening process while ensuring the stability of the maximum opening dynamic load measurement data, and reduces the requirements for the airdrop speed of the carrier aircraft, thereby reducing the difficulty and cost of implementing the airdrop test.

[0006] This application is implemented as follows:

[0007] This application provides a test parachute airdrop projectile for human use, which includes a test projectile body with a receiving groove at the tail end, a parachute pack, a force measuring device, and a parachute opening controller disposed in the receiving groove. The parachute opening controller is used to control the opening of the parachute pack. The parachute pack contains a test parachute, a spring-guided parachute, and a ring parachute. The two ends of the force measuring device are respectively connected to the test projectile body and the parachute lines of the test parachute. The parachute lines of the spring-guided parachute are connected to the test parachute, and the parachute lines of the ring parachute are connected to the tail end of the test projectile body.

[0008] In some alternative implementations, the test parachute, spring-guided parachute, and ring parachute are arranged sequentially in a direction away from the force gauge.

[0009] In some alternative implementations, the test projectile is connected to a removable sealing cap for opening and closing the receiving slot.

[0010] In some alternative implementations, the test parachute is configured to pass through the middle of an open ring parachute and deploy.

[0011] In some alternative implementations, the sum of the aerodynamic drag of the ring parachute after deployment and the aerodynamic drag of the test projectile is the same as the aerodynamic drag of the human body.

[0012] This application also provides a method for testing a human parachute airdrop, which includes the following steps:

[0013] The aircraft will drop the aforementioned test bombs using parachutes at a predetermined altitude and speed.

[0014] The parachute controller calculates the time it takes for the test parachute to reach its maximum deployment speed based on the altitude and speed of the airdrop. When the test parachute reaches its deployment speed, the parachute pack is opened, causing the spring-guided parachute and the ring parachute to deploy separately. When the spring-guided parachute deploys, it passes through the ring parachute and pulls the test parachute out of the parachute pack. At the same time as the test parachute deploys, the force measuring device is activated to measure the maximum dynamic load of the test parachute during the deployment process.

[0015] The beneficial effects of this application are as follows: The air-dropped test parachute provided by this application includes a test projectile body with a receiving groove at the tail end, and a parachute pack, a force measuring device, and a parachute opening controller located within the receiving groove. The parachute opening controller is used to control the opening of the parachute pack. The parachute pack contains a test parachute, a spring-guided parachute, and a ring parachute. The two ends of the force measuring device are respectively connected to the test projectile body and the parachute lines of the test parachute. The parachute lines of the spring-guided parachute are connected to the test parachute, and the parachute lines of the ring parachute are connected to the tail end of the test projectile body. The air-dropped test parachute and test method provided by this application simulate the actual parachute opening process while ensuring the stability of the maximum opening dynamic load measurement data, and reduces the requirements for the air-drop speed of the carrier aircraft, thereby reducing the implementation difficulty and test cost of the air-drop test. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A partial cross-sectional view of a test bomb for airdropping a human parachute, provided in an embodiment of this application.

[0018] Figure 2 A schematic diagram of the structure of the guide parachute and the ring parachute of the manned parachute air-dropped test bomb provided in the embodiments of this application when the parachute opens;

[0019] Figure 3 This is a schematic diagram of the structure of the test parachute for the air-dropped test bomb provided in this application embodiment when it opens.

[0020] In the diagram: 100, test projectile; 110, receiving slot; 120, parachute pack; 130, force gauge; 140, parachute opening controller; 150, test parachute; 160, spring-guided parachute; 170, ring parachute; 180, sealing cap. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The features and performance of the manned parachute airdrop test bomb and test method of this application are further described in detail below with reference to embodiments.

[0029] like Figure 1 , Figure 2 and Figure 3As shown, this application embodiment provides a test parachute airdrop projectile, which includes a test projectile body 100 with a receiving groove 110 at its tail end, a parachute pack 120, a force measuring device 130, and a parachute opening controller 140 disposed within the receiving groove 110. The parachute opening controller 140 is used to control the parachute pack 120 to open at a set altitude and speed. The parachute pack 120 is provided with a test parachute 150, a spring guide parachute 160, and a ring parachute 170. The test parachute 150, the spring guide parachute 160, and the ring parachute 170 are arranged sequentially in a direction away from the force measuring device 130. The two ends of the force measuring device 130 are respectively connected to the parachute lines of the test projectile body 100 and the test parachute 150. The parachute lines of the spring guide parachute 160 are connected to the test parachute 150. The parachute lines of the ring parachute 170 are connected to the tail end of the test projectile body 100. After the ring parachute 170 is opened, it is coaxially connected to the test projectile body 100. The test parachute 150 can pass through the middle of the opened ring parachute 170 and open. The test projectile 100 has a detachable sealing cap 180 connected to its tail, which is used to open and close the receiving slot 110. The parachute controller 140 in this embodiment is prior art, so its structure will not be described in detail. In this embodiment, the sum of the aerodynamic drag of the annular parachute 170 after opening and the aerodynamic drag of the test projectile 100 is the same as the aerodynamic drag of the human body.

[0030] The usage steps and principles of the human parachute air-dropped test bomb provided in this application embodiment are as follows:

[0031] The aircraft will drop a test bomb using a parachute at a predetermined altitude and speed.

[0032] The speed of the test bomb dropped by a manned parachute continuously increased under the influence of gravity;

[0033] The parachute controller 140 calculates the time it takes for the test parachute to reach its maximum deployment speed based on the altitude and speed of the airdrop.

[0034] When the test bomb dropped by the manned parachute reaches the opening speed, the parachute controller 140 opens the parachute pack 120, causing the spring-guided parachute 160 and the ring parachute 170 to open respectively. When the spring-guided parachute 160 opens, it passes through the central through hole of the ring parachute 170 and pulls the test parachute 150 out of the parachute pack 120. After the test parachute 150 passes through the central through hole of the ring parachute 170 and opens, it drives the force measuring device 130 to measure the opening dynamic load of the test parachute 150 during the opening process.

[0035] The test projectile 100 is equipped with a detachable sealing cover 180 at its tail. The sealing cover 180 is used to open and close the receiving groove 110. When not in use, the sealing cover 180 can be connected to the tail of the test projectile 100 to close the receiving groove 110 and protect the components inside the receiving groove 110. The sealing cover 180 can be removed before use.

[0036] The manned parachute airdrop test projectile provided in this application embodiment adds a ring-shaped parachute 170 to the tail of the low-aerodynamic-drag test projectile body 100. This makes the sum of the aerodynamic drag of the ring-shaped parachute 170 and the test projectile body 100 comparable to the aerodynamic drag of a human body. Furthermore, the test parachute 150 can pass through a through-hole in the center of the ring-shaped parachute 170 during normal parachute opening, thereby ensuring the authenticity of the maximum opening dynamic load measurement data for simulated parachute opening. The manned parachute airdrop test projectile provided in this application embodiment not only ensures the stability of the maximum opening dynamic load measurement data but also simulates the actual parachute opening process, while reducing the requirements for the airdrop speed of the carrier aircraft, thus reducing the difficulty and cost of implementing the airdrop test.

[0037] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A manned parachute-dropped test bomb, characterized in that, It includes a test projectile with a receiving groove at its tail end, and a parachute pack, a force measuring device, and a parachute opening controller disposed within the receiving groove. The parachute opening controller is used to control the opening of the parachute pack. The parachute pack contains a test parachute, a spring-guided parachute, and a ring parachute. The two ends of the force measuring device are respectively connected to the test projectile and the parachute lines of the test parachute. The parachute lines of the spring-guided parachute are connected to the test parachute, and the parachute lines of the ring parachute are connected to the tail end of the test projectile. The test parachute, the spring-guided parachute, and the ring parachute are arranged sequentially away from the force measuring device. The parachute opening controller opens the parachute pack, causing the spring-guided parachute and the ring parachute to open respectively. After the ring parachute opens, it is coaxially connected to the test projectile. When the spring-guided parachute opens, it passes through the central through-hole of the ring parachute and pulls the test parachute out of the parachute pack. When the test parachute opens after passing through the central through-hole of the ring parachute, it drives the force measuring device to measure the opening dynamic load of the test parachute during the opening process.

2. The manned parachute air-dropped test bomb according to claim 1, characterized in that, The test projectile is connected to a detachable sealing cap, which is used to open and close the receiving slot.

3. The manned parachute air-dropped test bomb according to claim 1, characterized in that, The sum of the aerodynamic drag of the annular parachute after it opens and the aerodynamic drag of the test projectile is the same as the aerodynamic drag of the human body.

4. A method for conducting a human parachute airdrop test, characterized in that, It includes the following steps: The aircraft will drop a test bomb with a human parachute as described in any one of claims 1 to 3 at a predetermined altitude and speed. The parachute controller calculates the time it takes for the test parachute to reach its maximum deployment speed based on the airdrop altitude and velocity. When the test parachute reaches its deployment speed, the parachute pack opens, causing the spring-guided parachute and the ring parachute to deploy separately. After deployment, the ring parachute is coaxially connected to the test parachute body. When the spring-guided parachute deploys, it passes through the central through-hole of the ring parachute and pulls the test parachute out of the parachute pack. As the test parachute opens after passing through the central through-hole of the ring parachute, it simultaneously drives a force sensor to measure the maximum dynamic load of the test parachute during the deployment process.

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