A method, device and electronic device for securing and protecting settings

Abstract

The present invention discloses a method, device and electronic equipment for securing and protecting settings. By obtaining the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and the vertical distance from the fixing point of the securing and protecting rope to the rocket body during the horizontal projectile motion of the rocket body; based on the above data, the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands are determined; according to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands, the target load for securing and protecting is determined. This solution creatively considers the rocket body attitude under the emergency shutdown condition and the motion state of the rocket body after shutdown, determines the maximum load that the securing and protecting needs to bear, so as to match a suitable securing and protecting device. It lays a foundation for conducting reusable liquid rocket securing and protecting tests.

Description

Technical Field

[0001] The present invention relates to the technical field of reusable recovery rockets in commercial spaceflight, and particularly to a method, device and electronic equipment for securing and protecting settings. Background Art

[0002] To reduce the flight test risks of reusable liquid rockets, a securing and protecting test is added between static ignition and low-altitude recovery tests, that is, during the low-altitude flight test of the rocket, it is secured with a rope or sling to prevent tipping due to uncontrollable rocket body attitude after an accidental emergency shutdown. However, because the test rockets are different, the load requirements for the securing and protecting device and the sling are different. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a method, device and electronic equipment for securing and protecting settings.

[0004] According to a first aspect of the present invention, there is provided a method for securing and protecting settings, which is applied to a rocket securing and protecting test. The method includes:

[0005] Obtain the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and vertical distance from the fixed point of the securing and protecting rope to the rocket body when the rocket body is in a projectile motion;

[0006] Determine the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and vertical distance from the fixed point of the securing and protecting rope to the rocket body;

[0007] Determine the target load for securing and protecting according to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands.

[0008] Optionally, determining the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and vertical distance from the fixed point of the securing and protecting rope to the rocket body includes:

[0009] Determine the vertical velocity and horizontal velocity of the rocket body when it lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, and length of the securing and protecting rope;

[0010] Determine the target angle between the securing and protecting rope and the vertical direction when the rocket body lands according to the vertical distance from the fixed point of the securing and protecting rope to the rocket body and the length of the securing and protecting rope;

[0011] Based on the vertical velocity, horizontal velocity, and target angle of the arrow body when it lands, determine the tangential velocity and the normal velocity along the rope direction of the arrow body's circular motion along the rope when it lands;

[0012] Based on the tangential velocity of the arrow body's circular motion along the rope, the normal velocity along the rope direction, the mass of the arrow body, the target angle, and the length of the securing and protecting rope, determine the rope load when the securing and protecting rope is taut.

[0013] Optionally, based on the tangential velocity of the arrow body's circular motion along the rope, the normal velocity along the rope direction, the mass of the arrow body, the target angle, and the length of the securing and protecting rope, determining the rope load when the securing and protecting rope is taut includes:

[0014] Based on the tangential velocity of the arrow body's circular motion along the rope, the normal velocity along the rope direction, the mass of the arrow body, the target angle, and the length of the securing and protecting rope, determine the rope load when the securing and protecting rope is taut through the following formula:

[0015] F 绳 =F 1 +F 2 +F 3

[0016] F 1 =Gcosθ

[0017]

[0018]

[0019] where F 绳 is the rope load when the securing and protecting rope is taut; F 1 is the rope load caused by a partial component of gravity; G is the gravity of the arrow body; F 2 is the rope load caused by the centrifugal force of the arrow body; F 3 is the rope load caused by the elastic deformation of the securing and protecting rope; m is the mass of the arrow body; Δt is the time required for F 3 to change from 0 to the maximum; θ is the target angle between the securing and protecting rope and the vertical direction, R is the length of the securing and protecting rope; V 切 is the tangential velocity of the arrow body's circular motion along the rope; V 法 is the normal velocity of the arrow body along the rope direction.

[0020] Optionally, based on the target angle between the securing and protecting rope and the vertical direction when the arrow body lands and the rope load when the securing and protecting rope is taut when the arrow body lands, determining the target load for securing and protecting includes:

[0021] Determine the lateral load and vertical load when the fastening protection rope is taut according to the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands.

[0022] Determine the target load of the fastening protection according to the lateral load and vertical load when the fastening protection rope is taut.

[0023] Optionally, according to the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands, determine the lateral load and vertical load when the fastening protection rope is taut through the following formula:

[0024] F 横 =F 绳 sin(θ)

[0025] F 竖 =F 绳 cos(θ)

[0026] where θ is the target angle between the fastening protection rope and the vertical direction; F 横 is the lateral load when the fastening protection rope is taut; F 竖 is the vertical load when the fastening protection rope is taut; F 绳 is the rope load when the fastening protection rope is taut.

[0027] Optionally, determining the target load of the fastening protection according to the lateral load and vertical load when the fastening protection rope is taut includes:

[0028] The lateral load when the fastening protection rope is taut is less than 5% of the target load;

[0029] The vertical load when the fastening protection rope is taut is less than the target load.

[0030] Optionally, the projectile motion is:

[0031] After the rocket body ignites and takes off, if the height of the rocket body from the ground ≥ 4m or the lateral displacement distance of the rocket body relative to the take-off point ≥ 7m or the vertical upward speed of the rocket body ≥ 2m / s or the horizontal speed of the rocket body ≥ 2m / s, then turn off the rocket body engine, and the rocket body makes a motion only affected by gravity.

[0032] According to the second aspect of the present invention, a fastening protection device is provided, which is applied to the rocket fastening protection test. The device includes:

[0033] A data acquisition module for acquiring the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and the vertical distance from the fixing point of the securing and protecting rope to the rocket body during the horizontal projectile motion of the rocket body;

[0034] A first processing module for determining the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and the vertical distance from the fixing point of the securing and protecting rope to the rocket body;

[0035] A second processing module for determining the target load of the securing and protecting according to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands.

[0036] According to a third aspect of the present invention, there is provided an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the computer program, the foregoing securing and protecting setting method is implemented.

[0037] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the foregoing securing and protecting setting method is implemented.

[0038] One or more of the above technical solutions in the embodiments of the present specification have at least the following technical effects:

[0039] A securing and protecting setting method, device and electronic device provided by the embodiments of the present specification, by acquiring the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the securing and protecting rope, and the vertical distance from the fixing point of the securing and protecting rope to the rocket body during the horizontal projectile motion of the rocket body; according to the above data, determining the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands; according to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands, determining the target load of the securing and protecting. This solution creatively considers the attitude of the rocket body under the emergency shutdown condition and the motion state of the rocket body after shutdown, determines the maximum load that the securing and protecting needs to bear, so as to match a suitable securing and protecting device. It lays a foundation for the securing and protecting test of reusable liquid rockets.

[0040] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specific embodiments of the present invention are specifically given. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0042] In the drawings:

[0043] Figure 1 A schematic diagram of an electronic device in an embodiment of the present invention is shown.

[0044] Figure 2 A flowchart of a method for setting up a fastening protection is shown in an embodiment of the present invention.

[0045] Figure 3 A velocity analysis diagram when the rocket body lands is shown in an embodiment of the present invention.

[0046] Figure 4 A schematic diagram of the rope load in an embodiment of the present invention is shown.

[0047] Figure 5 A schematic diagram of the target load in an embodiment of the present invention is shown

[0048] Reference Signs:

[0049] 100 - Electronic device; 10 - Fastening protection device; 11 - Data receiving module; 12 - Screening and processing module; 13 - Fastening protection setting module; 20 - Memory; 30 - Processor; 40 - Communication unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0052] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Please refer to Figure 1 , Figure 1 which is a structural block diagram of an electronic device 100 provided for this embodiment. As Figure 1 shown, the electronic device may include a fastening protection setting method device 10, a memory 20, a processor 30, and a communication unit 40. The memory 20 stores machine-readable instructions executable by the processor 30. When the electronic device 100 runs, the processor 30 and the memory 20 communicate through a bus. The processor 30 executes the machine-readable instructions and performs the fastening protection setting method.

[0055] The memory 20, the processor 30, and the communication unit 40 are directly or indirectly electrically connected to each other to achieve signal transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The fastening protection setting method device 10 includes at least one software function module that can be stored in the memory 20 in the form of software or firmware. The processor 30 is used to execute the executable modules stored in the memory 20 (such as the software function modules or computer programs included in the fastening protection setting method device 10).

[0056] Among them, the memory 20 can be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc.

[0057] In some embodiments, the processor 30 is configured to execute one or more functions described in this embodiment. In some embodiments, the processor 30 may include one or more processing cores (e.g., a single-core processor(s) or a multi-core processor(s)). By way of example only, the processor 30 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction-set Processor (ASIP), a Graphics Processing Unit (GPU), a Physics Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller unit, a Reduced Instruction Set Computing (RISC), or a microprocessor, etc., or any combination thereof.

[0058] For ease of illustration, only one processor is described in the electronic device 100. However, it should be noted that the electronic device 100 in this embodiment may also include multiple processors. Therefore, the steps executed by one processor described in this embodiment may also be jointly executed or separately executed by multiple processors. For example, if the processor of the server executes steps A and B, it should be understood that steps A and B may also be jointly executed by two different processors or separately executed in one processor. For example, the processor executes step A, the second processor executes step B, or the processor and the second processor jointly execute steps A and B.

[0059] In this embodiment, the memory 20 is used to store programs, and the processor 30 is configured to execute the programs after receiving execution instructions. The method defined by the process disclosed in any implementation manner of this embodiment can be applied to the processor 30 or implemented by the processor 30.

[0060] The communication unit 40 is configured to establish a communication connection between the electronic device 100 and other devices through a network and to transmit and receive data through the network.

[0061] In some embodiments, the network can be any type of wired or wireless network, or a combination thereof. By way of example only, the network can include a wired network, a wireless network, an optical fiber network, a telecommunications network, an intranet, the Internet, a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), a Metropolitan Area Network (MAN), a Wide Area Network (WAN), a Public Switched Telephone Network (PSTN), a Bluetooth network, a ZigBee network, or a Near Field Communication (NFC) network, etc., or any combination thereof.

[0062] In this embodiment, the electronic device 100 can be, but is not limited to, electronic devices such as a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), etc. This embodiment does not impose any restrictions on the specific type of the electronic device.

[0063] It can be understood that Figure 1 The structure shown is only schematic. The electronic device 100 may also have more or fewer components than Figure 1 shown, or have a configuration different from that Figure 1 shown. Figure 1 Each of the components shown can be implemented using hardware, software, or a combination thereof.

[0064] Based on Figure 1 the implementation architecture, this embodiment provides a method for setting up a fastening protection, which is executed by the Figure 1 shown electronic device 100. The steps of the method for setting up the fastening protection provided in this embodiment will be elaborated in detail below based on the structure diagram of the Figure 1 shown electronic device 100. As shown in combination with Figure 2 shown, the method for setting up the fastening protection includes steps 101 to 103:

[0065] Step 101: Obtain the vertical velocity deviation extreme value, the horizontal velocity deviation extreme value of the rocket body during the projectile motion, the mass of the rocket body, the length of the fastening protection rope, and the vertical distance from the fixed point of the fastening protection rope to the rocket body;

[0066] In this embodiment, the fastening protection generally refers to using a rope or sling to fasten during the low-altitude flight test of the rocket to prevent the rocket body from tipping over due to the uncontrollable attitude of the rocket body after an accidental emergency shutdown. A fastening protection rope is connected to the boom of the crane, and the connection point between the rope and the boom is regarded as the fixed point O. Commonly, taking this embodiment as an example, the height of the rocket body is 12 meters, and the length of the fastening protection rope is about 30 meters. The mass of the rocket body can be determined according to the actual test flight rocket body.

[0067] Among them, the projectile motion means that when the rocket body ignites and takes off, if the height of the rocket body from the ground ≥ 4m, or the horizontal displacement distance of the rocket body relative to the takeoff point ≥ 7m, or the vertical upward velocity of the rocket body ≥ 2m / s, or the horizontal velocity of the rocket body ≥ 2m / s, then the engine emergency shutdown strategy is executed, that is, the engine of the rocket body is shut down. At this time, the rocket body moves only under the influence of gravity.

[0068] Step 102: Determine the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and the vertical distance from the fixed point of the fastening protection rope to the rocket body;

[0069] Among them, at the initial moment of the projectile motion of the rocket body, the projectile motion analysis is carried out at the moment when the height of the rocket body from the ground = 4m or the horizontal displacement distance of the rocket body relative to the takeoff point = 7m. At this moment, the vertical velocity and horizontal velocity are considered according to the deviation extreme value. For example, the vertical upward velocity of the rocket body = 2m / s, the horizontal velocity of the rocket body = 2m / s, and the horizontal displacement distance L of the rocket body relative to the takeoff point when the rocket body lands, the vertical velocity of the rocket body when the rocket body lands, and the horizontal velocity of the rocket body when the rocket body lands are calculated. It should be noted that after the projectile motion of the rocket body, the fastening protection rope will be taut, and the rocket body loses power and will move along the rope in a centrifugal motion. Combined with Figure 3 As shown, where the outer circle represents the activity range when the rope is taut, and its fixed point is point O; Vx and Vy are the velocities in the horizontal and vertical directions respectively; V 合 represents the resultant velocity; V 切 and V 法 represent the tangential velocity and the normal velocity along the rope direction of the circular motion along the rope respectively.

[0070] Specifically, combined with Figure 3 、 Figure 4 As shown, the target angle θ between the fastening protection rope and the vertical direction when the rocket body lands can be determined according to the vertical distance a from the fixed point of the fastening protection rope to the rocket body and the length R of the fastening protection rope:

[0071]

[0072] Then, based on the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the arrow body, and the length of the securing and protecting rope, the vertical velocity and horizontal velocity of the arrow body when it lands are determined.

[0073] Based on the vertical distance from the fixing point of the securing and protecting rope to the arrow body and the length of the securing and protecting rope, the target angle between the securing and protecting rope and the vertical direction when the arrow body lands is determined.

[0074] Based on the vertical velocity, horizontal velocity, and target angle of the arrow body when it lands, the tangential velocity and normal velocity of the arrow body moving in a circular motion along the rope when the arrow body lands are determined.

[0075] Among them, when the rope is taut, there is a tangential force in the tangential direction of the circular motion of the rope; in the direction along the rope, there is a normal load caused by the elastic deformation of the rope. In addition, the load caused by some gravity components needs to be considered, and the gravity of the arrow body is jointly borne by the rope and the ground. The force analysis is as Figure 4 shown.

[0076] Based on the tangential velocity, normal velocity, mass of the arrow body, target angle, and length of the securing and protecting rope of the arrow body moving in a circular motion along the rope, the rope load when the securing and protecting rope is taut is determined.

[0077] F 绳 = F 1 + F 2 + F 3

[0078] F 1 = Gcosθ

[0079]

[0080]

[0081] Among them, F 绳 is the rope load when the securing and protecting rope is taut; F 1 is the rope load caused by some gravity components; G is the gravity of the arrow body; F 2 is the rope load caused by the centrifugal force of the arrow body; F 3 is the rope load caused by the elastic deformation of the securing and protecting rope; m is the mass of the arrow body; Δt is the time required for F 3 to change from 0 to the maximum; θ is the target angle between the securing and protecting rope and the vertical direction, R is the length of the securing and protecting rope; V 切 is the tangential velocity of the arrow body moving in a circular motion along the rope; V 法 is the normal velocity of the arrow body in the direction along the rope.

[0082] Step 103: Determine the target load for the fastening protection based on the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands.

[0083] The target load refers to the maximum load that the rope needs to bear under the conditions of this embodiment. Combining Figure 5 As shown, it may specifically include:

[0084] First, based on the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands, determine the lateral load when the fastening protection rope is taut and the vertical load when the fastening protection rope is taut;

[0085] F 横 = F 绳 sin(θ)

[0086] F 竖 = F 绳 cos(θ)

[0087] where θ is the target angle between the fastening protection rope and the vertical direction; F 横 is the lateral load when the fastening protection rope is taut; F 竖 is the vertical load when the fastening protection rope is taut; F 绳 is the rope load when the fastening protection rope is taut.

[0088] Then, based on the lateral load when the fastening protection rope is taut and the vertical load when the fastening protection rope is taut, determine the target load for the fastening protection.

[0089] In an alternative embodiment, determining the target load for the fastening protection based on the lateral load when the fastening protection rope is taut and the vertical load when the fastening protection rope is taut includes:

[0090] The lateral load when the fastening protection rope is taut is less than 5% of the target load;

[0091] The vertical load when the fastening protection rope is taut is less than the target load.

[0092] After obtaining the target load, the lifting rated load of the fastening protection device (i.e., the crane) and the selection of the sling rope can be determined in combination with the rope length.

[0093] A method for setting up fastening protection provided by an embodiment of this specification. By obtaining the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and the vertical distance from the fixed point of the fastening protection rope to the rocket body during the horizontal projectile motion of the rocket body; based on the above data, determining the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands; based on the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands, determining the target load of the fastening protection. This solution creatively considers the attitude of the rocket body under the emergency shutdown condition and the motion state of the rocket body after shutdown, determines the maximum load that the fastening protection needs to bear, so as to match a suitable fastening protection device. It lays a foundation for conducting the fastening protection test of reusable liquid rockets.

[0094] Based on the same inventive concept, an embodiment of the present invention also provides a fastening protection device 10, including:

[0095] A data acquisition module, configured to obtain the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and the vertical distance from the fixed point of the fastening protection rope to the rocket body during the horizontal projectile motion of the rocket body;

[0096] A first processing module, configured to determine the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and the vertical distance from the fixed point of the fastening protection rope to the rocket body;

[0097] A second processing module, configured to determine the target load of the fastening protection according to the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is taut when the rocket body lands.

[0098] In an optional implementation manner, the first processing module is further configured to:

[0099] Determine the vertical velocity of the rocket body and the horizontal velocity of the rocket body when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, and length of the fastening protection rope;

[0100] Determine the target angle between the fastening protection rope and the vertical direction when the rocket body lands according to the vertical distance from the fixed point of the fastening protection rope to the rocket body and the length of the fastening protection rope;

[0101] Determine the tangential velocity and the normal velocity along the rope direction of the rocket body when the rocket body lands in a circular motion along the rope according to the vertical velocity of the rocket body, the horizontal velocity of the rocket body, and the target angle when the rocket body lands;

[0102] Determine the rope load when the securing and protecting rope is taut based on the tangential velocity of the arrow body moving in a circle along the rope, the normal velocity along the rope direction, the mass of the arrow body, the target angle, and the length of the securing and protecting rope.

[0103] In an alternative embodiment, the first processing module is further configured to:

[0104] Determine the rope load when the securing and protecting rope is taut according to the tangential velocity of the arrow body moving in a circle along the rope, the normal velocity along the rope direction, the mass of the arrow body, the target angle, and the length of the securing and protecting rope through the following formula:

[0105] F 绳 = F 1 + F 2 + F 3

[0106] F 1 = Gcos θ

[0107]

[0108]

[0109] where F 绳 is the rope load when the securing and protecting rope is taut; F 1 is the rope load caused by a partial gravity component; G is the gravity of the arrow body; F 2 is the rope load caused by the centrifugal force of the arrow body; F 3 is the rope load caused by the elastic deformation of the securing and protecting rope; m is the mass of the arrow body; Δt is the time required for F 3 to change from 0 to the maximum; θ is the target angle between the securing and protecting rope and the vertical direction, R is the length of the securing and protecting rope; V 切 is the tangential velocity of the arrow body moving in a circle along the rope; V 法 is the normal velocity of the arrow body along the rope direction.

[0110] In an alternative embodiment, the second processing module is further configured to:

[0111] Determine the lateral load when the securing and protecting rope is taut and the vertical load when the securing and protecting rope is taut according to the target angle between the securing and protecting rope and the vertical direction when the arrow body lands and the rope load when the securing and protecting rope is taut when the arrow body lands;

[0112] Determine the target load for securing and protection according to the lateral load when the securing and protecting rope is taut and the vertical load when the securing and protecting rope is taut.

[0113] In an alternative embodiment, the second processing module is further configured to:

[0114] According to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands, and the rope load when the securing and protecting rope is taut when the rocket body lands, the lateral load and the vertical load when the securing and protecting rope is taut are determined through the following formulas:

[0115] F 横 = F 绳 sin(θ)

[0116] F 竖 = F 绳 cos(θ)

[0117] where θ is the target angle between the securing and protecting rope and the vertical direction; F 横 is the lateral load when the securing and protecting rope is taut; F 竖 is the vertical load when the securing and protecting rope is taut; F 绳 is the rope load when the securing and protecting rope is taut.

[0118] In an alternative embodiment, the second processing module is further configured to:

[0119] The lateral load when the securing and protecting rope is taut is less than five percent of the target load;

[0120] The vertical load when the securing and protecting rope is taut is less than the target load.

[0121] A securing and protecting device provided in an embodiment of this specification, by obtaining the vertical velocity deviation extreme value, the horizontal velocity deviation extreme value, the mass of the rocket body, the length of the securing and protecting rope, and the vertical distance from the fixing point of the securing and protecting rope to the rocket body during the projectile motion of the rocket body; based on the above data, determining the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands; and determining the target load of the securing and protection according to the target angle between the securing and protecting rope and the vertical direction when the rocket body lands and the rope load when the securing and protecting rope is taut when the rocket body lands. This solution creatively considers the attitude of the rocket body under the emergency shutdown condition and the motion state of the rocket body after shutdown, determines the maximum load that the securing and protection needs to bear, so as to match a suitable securing and protecting device. It lays a foundation for conducting the securing and protection test of reusable liquid rockets.

[0122] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described securing and protecting device can refer to the corresponding process in the foregoing method, and will not be elaborated herein too much.

[0123] On this basis, this embodiment provides a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the securing and protection setting method of any of the foregoing embodiments.

[0124] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the specific working process of the readable storage medium described above can refer to the corresponding process in the foregoing method, and will not be elaborated herein.

[0125] The above are only various embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for setting up fastening protection, characterized in that, applied to the rocket fastening protection test, the method includes: Obtaining the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and vertical distance from the fixed point of the fastening protection rope to the rocket body when the rocket body is in a horizontal projectile motion; According to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and vertical distance from the fixed point of the fastening protection rope to the rocket body of the rocket body, determining the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is tightened when the rocket body lands; Determining the target load of the fastening protection according to the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is tightened when the rocket body lands.

2. The method for setting up fastening protection according to claim 1, characterized in that, The determining the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is tightened when the rocket body lands according to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, length of the fastening protection rope, and vertical distance from the fixed point of the fastening protection rope to the rocket body of the rocket body includes: According to the vertical velocity deviation extreme value, horizontal velocity deviation extreme value, mass of the rocket body, and length of the fastening protection rope, determining the vertical velocity of the rocket body and the horizontal velocity of the rocket body when the rocket body lands; According to the vertical distance from the fixed point of the fastening protection rope to the rocket body and the length of the fastening protection rope, determining the target angle between the fastening protection rope and the vertical direction when the rocket body lands; According to the vertical velocity of the rocket body, horizontal velocity of the rocket body, and the target angle when the rocket body lands, determining the tangential velocity and the normal velocity along the rope direction of the rocket body moving in a circular motion along the rope when the rocket body lands; According to the tangential velocity of the rocket body moving in a circular motion along the rope, the normal velocity along the rope direction, the mass of the rocket body, the target angle, and the length of the fastening protection rope, determining the rope load when the fastening protection rope is tightened.

3. The method for setting up fastening protection according to claim 2, characterized in that, The determining the rope load when the fastening protection rope is tightened according to the tangential velocity of the rocket body moving in a circular motion along the rope, the normal velocity along the rope direction, the mass of the rocket body, the target angle, and the length of the fastening protection rope includes: According to the tangential velocity of the rocket body moving in a circular motion along the rope, the normal velocity along the rope direction, the mass of the rocket body, the target angle, and the length of the fastening protection rope, determining the rope load when the fastening protection rope is tightened through the following formula: F 绳 = F 1 + F 2 + F 3 F 1 = G cos θ Among them, F 绳 is the rope load when the securing protection rope is tightened; F 1 is the rope load caused by a partial gravity component; G is the gravity of the arrow body; F 2 is the rope load caused by the centrifugal force of the arrow body; F 3 is the rope load caused by the elastic deformation of the securing protection rope; m is the mass of the arrow body; Δt is the time required for F 3 to change from 0 to the maximum; θ is the target angle between the securing protection rope and the vertical direction, R is the length of the securing protection rope; V 切 is the tangential velocity of the arrow body moving in a circle along the rope; V 法 is the normal velocity of the arrow body along the direction of the rope.

4. The method for setting up fastening protection according to claim 1, characterized in that, The determining the target load of the fastening protection according to the target angle between the fastening protection rope and the vertical direction when the rocket body lands and the rope load when the fastening protection rope is tightened when the rocket body lands includes: Determine the lateral load and the vertical load when the securing protection rope is taut based on the target angle between the securing protection rope and the vertical direction when the rocket body lands and the rope load when the securing protection rope is taut when the rocket body lands. Determine the target load for securing protection based on the lateral load and the vertical load when the securing protection rope is taut.

5. The method for setting up securing protection according to claim 4, wherein, Based on the target angle between the securing protection rope and the vertical direction when the rocket body lands and the rope load when the securing protection rope is taut when the rocket body lands, the lateral load and the vertical load when the securing protection rope is taut are determined through the following formula: F 横 = F 绳 sin(θ) F 竖 = F 绳 cos(θ) Where θ is the target angle between the securing protection rope and the vertical direction; F 横 is the lateral load when the securing protection rope is taut; F 竖 is the vertical load when the securing protection rope is taut; F 绳 is the rope load when the securing protection rope is taut.

6. The method for setting up securing protection according to claim 4, wherein, Determining the target load for securing protection based on the lateral load and the vertical load when the securing protection rope is taut includes: The lateral load when the securing protection rope is taut is less than five percent of the target load; The vertical load when the securing protection rope is taut is less than the target load.

7. The method for setting up securing protection according to claim 1, wherein, The projectile motion is as follows: After the rocket body ignites and takes off, if the height of the rocket body from the ground ≥ 4m or the lateral displacement distance of the rocket body relative to the take-off point ≥ 7m or the vertical upward velocity of the rocket body ≥ 2m / s or the horizontal velocity of the rocket body ≥ 2m / s, then the rocket body engine is shut down, and the rocket body moves under the influence of only gravity.

8. A securing protection device, wherein, Applied to the rocket securing protection test, the device includes: A data acquisition module for acquiring the extreme value of the vertical velocity deviation, the extreme value of the horizontal velocity deviation, the mass of the rocket body, the length of the securing protection rope, and the vertical distance from the fixing point of the securing protection rope to the rocket body during the projectile motion of the rocket body; A first processing module for determining the target angle between the securing protection rope and the vertical direction when the rocket body lands and the rope load when the securing protection rope is taut when the rocket body lands based on the extreme value of the vertical velocity deviation, the extreme value of the horizontal velocity deviation, the mass of the rocket body, the length of the securing protection rope, and the vertical distance from the fixing point of the securing protection rope to the rocket body of the rocket body; A second processing module for determining the target load for securing protection based on the target angle between the securing protection rope and the vertical direction when the rocket body lands and the rope load when the securing protection rope is taut when the rocket body lands.

9. An electronic device, wherein, The electronic device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for setting up securing protection according to any one of claims 1-7 is implemented.

10. A computer-readable storage medium, wherein, A computer program is stored thereon, and when the program is executed by a processor, the method for setting up securing protection according to any one of claims 1-7 is implemented.

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