An inflation fracturing composite ice-breaking bomb and a using method thereof

Abstract

The present application relates to a kind of inflation fracturing composite ice-breaking bomb and use method, including main bullet body and bullet body, the bullet body is loaded in the main bullet body, the bullet body is uniformly distributed along the circumferential direction, and symmetrically arranged in the upper and lower two layers of main bullet body, and the number of each layer bullet body is 4-6;The main bullet body includes main bullet body head, main bullet body shell, bullet hoop, microcomputer control system and main bullet body tail wing, the main bullet body head is connected main bullet body tail wing by main bullet body shell, the bullet hoop is arranged in the intermediate position of main bullet body shell, the bullet body is arranged in the bullet hoop, the microcomputer control system is arranged in main bullet body shell, and the control line of bullet hoop and main bullet body shell is connected;When sea ice disaster occurs, the present application controls unmanned aerial vehicle group to hang ice-breaking bomb equipped with liquid carbon dioxide and carries out delivery, bullet body is evenly dispersed, and the effective coverage area of ice breaking is improved, and high-efficiency, safe and pollution-free ice breaking operation is carried out by liquid carbon dioxide inflation explosion.

Description

Technical Field

[0001] This invention relates to the field of sea ice disaster management technology, and in particular to an expansion-induced fracture composite icebreaking projectile and its usage method. Background Technology

[0002] Sea ice disasters are among the most severe natural disasters affecting the northern sea areas in winter. Current methods for managing sea ice, such as icebreakers, are inefficient and costly. They are also affected by a combination of factors, including port environment, time and space, and ice conditions, making current icebreaking methods less than ideal and difficult to achieve rapid response to ice-related emergencies. Small vessels are still unable to enter or leave the port on their own after icebreaking. Traditional methods of blasting ice are dangerous and subject to significant limitations in operating conditions, severely hindering the economic development of ports during winter.

[0003] In response to the characteristics of the Bohai Sea ice—its vast area, thin thickness, and uneven spatial distribution—this invention proposes an ice-breaking projectile that utilizes a swarm of drones to deliver liquid carbon dioxide as the explosive fuel. During free fall, the projectile's outer shell opens and the projectile is ejected via a microcomputer control system, thereby increasing the effective ice-breaking coverage area. This makes the operation safer and more efficient, ensuring the normal operation of port services. The use of liquid carbon dioxide for expansion and detonation reduces the impact on the surrounding marine environment, making it more practical and feasible for managing sea ice disasters. Summary of the Invention

[0004] This invention provides an expansion-induced fracturing composite ice-breaking projectile and its usage method. Through the action of a microcomputer control system, the main projectile body opens its shell and ejects the projectiles, causing each projectile to disperse evenly, thereby increasing the effective coverage area for ice breaking. The projectile achieves efficient, safe, and pollution-free ice breaking operations through the expansion and explosion of liquid carbon dioxide.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] An expansion-induced fracturing composite ice-breaking projectile includes a main projectile body and a projectile body. The projectile body is loaded inside the main projectile body. The projectile bodies are evenly distributed along the circumference and symmetrically arranged in the upper and lower layers of the main projectile body, with 4 to 6 projectile bodies in each layer.

[0007] The main projectile includes a main projectile head, a main projectile shell, a projectile band, a microcomputer control system, and a main projectile tail fin. The main projectile head is connected to the main projectile tail fin through the main projectile shell. The projectile band is located in the middle of the main projectile shell. The projectile is placed inside the projectile band. The microcomputer control system is located inside the main projectile shell and connects the projectile band and the main projectile shell control line.

[0008] Furthermore, the bullet body includes an injection port, a delivery channel, a tail fin, a liquid carbon dioxide storage tank, an electrical control device, a thermal activation device, a bullet casing, a sealing ring, a threshold plate, an energy release port, a high-pressure chamber, and an ice-breaking cone. The injection port is connected to the liquid carbon dioxide storage tank through the delivery channel. The sealing ring is located at the outlet of the liquid carbon dioxide storage tank. The tail fin is located at the tail end of the bullet body. The connection between the tail fin and the inside of the bullet casing is connected to the thermal activation device via the electrical control device. The threshold plate is located at the connection between the liquid carbon dioxide storage tank and the ice-breaking cone. The energy release port is located in the middle of the ice-breaking cone, and the ice-breaking cone is located at the head of the entire bullet body.

[0009] Furthermore, the liquid carbon dioxide stored in the liquid carbon dioxide storage tank is discharged as converted carbon dioxide gas through the energy release port located in the middle of the ice-breaking cone 1 of the bullet body.

[0010] A method for using an expansion-induced fracturing composite ice-breaking projectile includes the following steps:

[0011] 1) When a sea ice disaster occurs, identify the sea ice area within the range, divide it into n equal parts according to the specifications and destruction radius of the projectile, and formulate a bombing plan: the number of drones is n groups, the total number of drones and bombs is 3n, the liquid carbon dioxide filling capacity of the ice-breaking projectile is 10-30kg, the main projectile releases the projectile at 1 / 2 drone bombing height above the ice surface, the bombing angle range is 15°-60°, and the sea ice area is broken and covered in a circular pattern from the inside to the outside. The radius of the sea ice area A is 6R. Calculate the time delay of the main projectile releasing the projectile according to the free fall formula, and calculate the flight time and landing position of the projectile according to the initial velocity and angle of the projectile. The landing time of the farthest projectile is used as the delayed detonation time of all projectiles, and the delay time parameters are set.

[0012] 2) Inject liquid carbon dioxide into the liquid carbon dioxide storage tank through the injection hole, assemble and inspect the main body and the projectile body to ensure that the UAV flies without any abnormalities;

[0013] 3) The center of each divided sea ice area is used as the bomb drop position. Drones are used to transport the ice-breaking bombs to the designated ice-breaking area for drop.

[0014] 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight.

[0015] 5) During the descent of the ice-breaking projectile, the microcomputer control system outputs a control signal to open the main projectile casing and eject the projectile.

[0016] 6) The electrical control device is delayed upon impact with the sea ice surface;

[0017] 7) After a specified delay, the thermal energy excitation device is activated. The thermal energy excitation device pressurizes the carbon dioxide in the liquid carbon dioxide storage tank to 100-300 MPa through phase change, and the gas volume expands to more than 600 times that of the original liquid carbon dioxide.

[0018] 8) When the internal pressure of the bullet reaches the maximum compressive strength of the threshold plate, the threshold plate ruptures, and the ice-breaking cone impacts the ice layer;

[0019] 9) Based on whether the large-scale connected ice surface breaks and separates under the action of the icebreaker, judge the result of sea ice breaking, identify the degree of local sea ice crack expansion, and if the cracks in multiple adjacent sea ice areas A are connected, it can be considered that the purpose of ice breaking has been achieved. Choose to complete the ice breaking task or repeat the operation from step 3 above.

[0020] 10) Complete the icebreaking task.

[0021] Furthermore, the start-up delay time of the power control device is set to 2-5 seconds.

[0022] Furthermore, the temperature range of the thermal energy excitation device is -10 to 10°C.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1) Through the action of the microcomputer control system, the main projectile body opens the main projectile body shell and throws out the projectile body, so that each projectile body is evenly dispersed, increasing the effective coverage area for ice breaking, and breaking ice through the expansion and cracking effect of liquid carbon dioxide.

[0025] 2) Using drones to carry icebreaking bombs can significantly increase the effective icebreaking range, making construction operations safer and more efficient, thus ensuring the safe and normal operation of the port;

[0026] 3) Using liquid carbon dioxide blasting can reduce the impact on the surrounding marine environment, making it more practical and feasible for managing sea ice disasters. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the ice-breaking projectile structure described in this invention.

[0028] Figure 2 This is a schematic diagram of the bullet body structure described in this invention.

[0029] Figure 3 This is a schematic diagram of the position structure of the bullet body and the bullet clamp inside the main shell of the present invention.

[0030] Figure 4 This is a flowchart of the usage method described in this invention.

[0031] In the diagram: 1. Icebreaker cone 2. High-pressure chamber 3. Energy release port 4. Liquid carbon dioxide storage tank 5. Thermal energy activation device 6. Electrical energy control device signal line 7. Projectile tail fin 8. Liquid injection port 9. Main projectile head 10. Main projectile casing 11. Main projectile tail fin 12. Projectile body 13. Projectile band Detailed Implementation

[0032] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0033] See Figure 1 This is a schematic diagram of the structure of the ice-breaking projectile of the present invention. The present invention provides an expansion-induced fracturing composite ice-breaking projectile, comprising a main projectile body and a projectile body 12. The projectile body 12 is loaded inside the main projectile body. The projectile bodies 12 are evenly distributed along the circumferential direction and symmetrically arranged in the upper and lower layers of the main projectile body, with 4 to 6 projectile bodies 12 in each layer.

[0034] The main projectile includes a main projectile head 9, a main projectile shell 10, a projectile band 13, a microcomputer control system, and a main projectile tail fin 11. The main projectile head 9 is connected to the main projectile tail fin 11 through the main projectile shell 10. All are made of high-density alloy to ensure stable descent of the projectile. See Figure 3 The spring clip 13 is located in the middle of the main projectile housing 10 and is used to fix and release the projectile body 12. The projectile body 12 is located inside the spring clip 13. The microcomputer control system is located inside the main projectile housing 10 and connects the spring clip 13 and the main projectile housing 10 control line. The microcomputer control system is used to control the jettisoning of the projectile housing and the release of the projectile body 12.

[0035] See Figure 2Furthermore, the bullet body 12 includes an injection port 8, a delivery channel, a bullet body tail fin 7, a liquid carbon dioxide storage tank 4, an electrical control device, a thermal excitation device 5, a bullet body shell, a sealing ring, a threshold plate, an energy release port 3, a high-pressure chamber 2, and an ice-breaking cone 1. The injection port 8 is hidden in the bullet body tail fin 7 and is connected to the liquid carbon dioxide storage tank 4 through the delivery channel. The liquid carbon dioxide storage tank 4 is used to store liquid carbon dioxide inside the bullet body. The liquid carbon dioxide loaded in the liquid carbon dioxide storage tank 4 is discharged as converted carbon dioxide gas through the energy release port 3 located in the middle of the ice-breaking cone 1 of the bullet body 12. The sealing ring is located at the output of the liquid carbon dioxide storage tank 4 and connected to the input of the threshold plate. The bullet body tail fin 7 is located at the tail end of the bullet body. The connection between the bullet body tail fin 7 and the inside of the bullet body shell is... The thermal excitation device 5 is connected to the electrical control device. The electrical control device signal line 6 is connected to the liquid injection port 8 at the tail of the thermal excitation device 5. The threshold plate is located at the connection between the liquid carbon dioxide storage tank 4 and the ice-breaking cone 1. The energy release port 3 is located in the middle of the ice-breaking cone 1. The ice-breaking cone 1 is located at the head of the entire projectile. The tail fin 7 of the projectile is used to maintain the balance of the projectile when it falls in the air. The electrical control device is used to control the delay time. The thermal excitation device 5 performs phase change pressurization on the liquid carbon dioxide inside the projectile. The projectile shell acts as the projectile body. The sealing ring is used to form a closed liquid carbon dioxide storage tank 4. The threshold plate is the maximum pressure value of liquid carbon dioxide phase change pressurization that the projectile 12 can withstand. The energy release port 3 is used to discharge the gas inside the projectile to provide power for the ice-breaking cone 1 to break through the ice layer. The ice-breaking cone 1 is used to break through the ice layer.

[0036] See Figure 4 A method for using an expansion-induced fracturing composite ice-breaking projectile includes the following steps:

[0037] 1) When a sea ice disaster occurs, identify the sea ice area B within the designated area. Divide the sea ice area B into n equal parts based on the bullet size and ice-breaking radius, with each part being A. Develop a bombing plan: three bomb-carrying drones form a group to break one part of sea ice area A. The drones will drop bombs at an altitude H, using three different gradient bombing angles (15°–60°) to break and cover the sea ice area A in a circular, overlapping pattern from the inside out. The radius of sea ice area A is 6R. The drones will be grouped... The number of groups is n, the total number of drones and bombs is 3n, the ice-breaking bombs are 10-30kg, and the effective breaking radius of the bomb body is 2-6m. The main body releases the bomb body 12 at 1 / 2H above the ice surface. The time delay of the main body releasing the bomb body 12 is calculated according to the free fall formula. The flight time and landing position of the bomb body 12 are calculated according to the initial velocity and angle of the bomb body 12. The landing time of the farthest bomb body 12 is used as the delayed detonation time of all bomb bodies 12. The delay time parameters are set.

[0038] 2) Inject liquid carbon dioxide into the liquid carbon dioxide storage tank 4 through the injection hole, assemble and inspect the main body and the projectile body 12 to ensure that the UAV flies without any abnormalities;

[0039] 3) The center of each divided sea ice area is used as the bomb drop position. Drones are used to transport the ice-breaking bombs to the designated ice-breaking area for drop.

[0040] 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight.

[0041] 5) During the descent of the ice-breaking projectile, the microcomputer control system outputs a control signal to open the main projectile casing 10 and eject the projectile body 12;

[0042] 6) When the bullet 12 impacts the sea ice surface, the power control device is activated after a delay, and the activation delay time of the power control device is set to 2-5 seconds;

[0043] 7) After a specified delay, the thermal energy excitation device 5 is activated. The thermal energy excitation device 5 has a temperature range of -10 to 10°C. The thermal energy excitation device 5 performs a phase change and pressurizes the carbon dioxide in the liquid carbon dioxide storage tank 4 to 100 to 300 MPa, and the gas volume expands to more than 600 times that of the original liquid carbon dioxide.

[0044] 8) When the internal pressure of the bullet body 12 reaches the maximum compressive strength of the threshold plate, the threshold plate ruptures, and the ice-breaking cone 1 impacts the ice layer;

[0045] 9) Based on whether the large-scale connected ice surface breaks and separates under the action of icebreaker cone 1, the sea ice breaking result is judged. By using UAV image recognition technology, the degree of local sea ice crack expansion is identified. If the cracks in multiple adjacent sea ice areas A are connected, it can be considered that the ice breaking purpose has been achieved. Then, the ice breaking task can be completed or the operation can be repeated from step 3 above.

[0046] 10) Complete the icebreaking task.

[0047] The following embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. Unless otherwise specified, the methods used in the following embodiments are conventional methods.

[0048]

Example 1

[0049] In mid-to-late January, Jinzhou Port in Liaoning Province experienced the initial stage of a sea ice disaster, with the sea ice area reaching 3000 m². 2 The thickness of a single layer of ice is 12-25cm, and ice-breaking is carried out by large-scale deployment of ice-breaking bombs by drones;

[0050] The specific process implementation steps are as follows:

[0051] 1) When a sea ice disaster occurs, a bombing plan should be formulated based on the size of the ice dam: Sea ice area B = 3000m² 2 The selected ice-breaking projectile has a weight of 10 kg, a projectile destruction radius R of 2 m, a sea ice area A radius of 6R = 12 m, a projectile spacing of 12R = 24 m, and the sea ice area A1, which is the actual area destroyed by the projectile, is calculated as π * 12. 2 ≈452m 2 The sea ice area A2, which is the area of ​​the square formed by the missile group spacing, is 24 * 24 = 576 m². 2 The sea ice area A1 is the inscribed circle of the sea ice area A2. The sea ice area A2 is selected as the effective range for a group of ice-breaking missiles. n = B / A2 ≈ 5, and the number of drones is 3n = 15.

[0052] The drone formation is set at 5 groups, with 15 drones in each group. The ice-breaking bomb weighs 10kg and is launched in 15-round bursts. Each group consists of 3 drones with a bomb spacing of 24m. The drones fly and drop the ice-breaking bombs at an altitude of 100m, and the projectiles are launched from an altitude of 50m. The projectiles are launched at three angles of 15°, 30°, and 45°, respectively. The initial velocity of the projectiles is 30m / s, and the ice-breaking bombs fall in approximately 1.6s. The projectiles launched at a 45° angle fall in 4s. To ensure that the projectiles detonate upon impact with the ice, the detonation delay is set to 7s.

[0053] 2) Inject liquid carbon dioxide into the liquid carbon dioxide storage tank 4 through the injection hole, assemble and inspect the main body and the bullet body 12 to ensure that the UAV flies without any abnormalities.

[0054] 3) The center of each divided sea ice area is used as the bomb drop position. The ice-breaking bomb is transported to the designated ice-breaking area by drone and dropped.

[0055] 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight.

[0056] 5) During the descent of the ice-breaking projectile, the main shell 10 is opened through the microcomputer control system, and the projectile 12 is ejected.

[0057] 6) When bullet 12 hits the sea ice surface, the power control device is activated after a delay.

[0058] 7) After a 2-second delay, the thermal energy excitation device 5 is activated. The thermal energy excitation device 5 has a temperature range of -10 to 10°C and performs phase change pressurization on the carbon dioxide in the liquid carbon dioxide storage tank 4, increasing the pressure from 5 MPa to 200 MPa.

[0059] 8) When the internal pressure of the bullet body 12 reaches the maximum pressure resistance of the threshold plate of 200MPa, the threshold plate ruptures.

[0060] 9) Carbon dioxide rushes out of the storage tank and enters the high-pressure chamber 2, and is discharged through the energy release port 3.

[0061] 10) Under the energy of ultra-high pressure of 200MPa, the ice-breaking cone 1 impacts the ice layer.

[0062] 11) Based on whether the large-scale connected ice surface breaks and separates under the action of icebreaker cone 1, the sea ice breaking result is judged. By using UAV image recognition technology, the degree of local sea ice crack expansion is identified. If the cracks in multiple adjacent sea ice areas are connected, it can be considered that the ice breaking purpose has been achieved. Then, the ice breaking task can be completed or the operation can be repeated from step 3 above.

[0063] 12) Complete the ice-breaking task.

[0064]

Example 2

[0065] In late December, at the initial stage of freezing, the average ice thickness at Yingkou Port in Liaoning Province was 40-60 cm, with a fixed ice area of ​​approximately 12,000 m². 2 The thickness of a single layer of ice is generally about 12 to 25 cm. In order to prevent the sea ice from freezing and spreading, icebreaking operations are required.

[0066] The specific process implementation steps are as follows:

[0067] 1) When a sea ice disaster occurs, a bombing plan should be formulated based on the size of the ice dam: Sea ice area B = 12000m² 2 The selected ice-breaking projectile has a weight of 20kg, a projectile destruction radius R of 4m, a sea ice area A radius of 6R = 24m, a projectile spacing of 12R = 48m, and a sea ice area A1 = π * 24. 2 ≈1808m 2 The sea ice area A2 = 48 * 48 = 2304 m² 2 The sea ice area A1 is the inscribed circle of the sea ice area A2. The sea ice area A2 is selected as the effective range for a group of icebreaking projectiles. n = B / A2 ≈ 5. The number of drones is 3n = 15.

[0068] The drone formation is determined to be 5 groups, with 15 drones in each group. The ice-breaking bombs are 20kg each, with 15 bombs dropped. 3 drones form a group, and the bomb spacing is 48m. The drones fly and drop the ice-breaking bombs at an altitude of 100m, and the projectile height is 50m. The projectile angles for the three rounds of projectile launches are 15°, 30°, and 45°, respectively. The initial velocity of the projectile is 40m / s, the ice-breaking bomb's descent time is 1.6s, and the projectile at a 45° launch angle has a landing time of 5.6s. To ensure detonation upon landing on the ice, the projectile's detonation delay time is set to 8s.

[0069] 2) Complete the carbon dioxide injection for the ice-breaking bomb, assemble and inspect it, and ensure that the UAV is taking off and operating.

[0070] 3) The center of each divided sea ice area is used as the bomb drop position. The ice-breaking bomb is transported to the designated ice-breaking area by drone and dropped.

[0071] 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight.

[0072] 5) During the descent of the ice-breaking projectile, the main shell 10 is opened through the microcomputer control system, and the projectile 12 is ejected.

[0073] 6) When bullet 12 hits the sea ice surface, the power control device is activated after a delay.

[0074] 7) After a 2-second delay, the thermal energy excitation device 5 is activated. The thermal energy excitation device 5 has a temperature range of -10 to 10°C and performs phase change pressurization on the carbon dioxide in the liquid carbon dioxide storage tank 4, increasing the pressure from 5 MPa to 200 MPa.

[0075] 8) When the internal pressure of the bullet body 12 reaches the maximum pressure resistance of the threshold plate of 200MPa, the threshold plate ruptures.

[0076] 9) Carbon dioxide rushes out of the storage tank and enters the high-pressure chamber 2, and is discharged through the energy release port 3.

[0077] 10) Under the energy of ultra-high pressure of 200MPa, the ice-breaking cone 1 impacts the ice layer.

[0078] 11) Based on whether the large-scale connected ice surface breaks and separates under the action of icebreaker cone 1, the sea ice breaking result is judged. By using UAV image recognition technology, the degree of local sea ice crack expansion is identified. If the cracks in multiple adjacent sea ice areas are connected, it can be considered that the ice breaking purpose has been achieved. Then, the ice breaking task can be completed or the operation can be repeated from step 3 above.

[0079] 12) Complete the ice-breaking task.

[0080]

Example 3

[0081] In mid-January, the ice at Panjin Port, located on the beach at the top of Liaodong Bay, was quite severe, with an average ice thickness of 15-30 cm and a fixed ice area of ​​approximately 30,000 m². 2 Icebreaking operations are required;

[0082] The specific process implementation steps are as follows:

[0083] 1) When a sea ice disaster occurs, a bombing plan should be formulated based on the size of the ice dam: Sea ice area B = 30,000 m² 2The selected ice-breaking projectile weighs 30kg, with a projectile destruction radius R of 6m, a sea ice area radius A of 6R = 36m, a projectile spacing of 12R = 78m, and a sea ice area A1 = π * 36 2 ≈4069m 2 The sea ice area A2 = 78 * 78 = 6084 m² 2 The sea ice area A1 is the inscribed circle of the sea ice area A2. The sea ice area A2 is selected as the effective range for a group of ice-breaking missiles. n = B / A2 ≈ 5, and the number of drones is 3n = 15.

[0084] The drone formation was determined to consist of 5 groups, with 15 drones in each group. The ice-breaking bombs weighed 30 kg each and were to be dropped in 15-round bursts. Three drones formed a group, with a bomb spacing of 78 m. The drones flew and dropped the ice-breaking bombs at an altitude of 100 m, and the projectiles were launched from an altitude of 50 m. The projectiles were launched at three different angles: 15°, 30°, and 45°. The initial velocity of the projectiles was 50 m / s, and the ice-breaking bombs took approximately 1.6 seconds to fall. The projectiles launched at a 45° angle took 7 seconds to reach the ground. To ensure that the projectiles detonated upon impact with the ice, the detonation delay was set to 10 seconds.

[0085] 2) Complete the carbon dioxide injection for the ice-breaking bomb, assemble and inspect it, and ensure that the UAV is taking off and operating.

[0086] 3) The center of each divided sea ice area is used as the bomb drop position. The ice-breaking bomb is transported to the designated ice-breaking area by drone and dropped.

[0087] 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight.

[0088] 5) During the descent of the ice-breaking projectile, the main projectile casing 10 is opened through the microcomputer control system, and the projectile body 12 is ejected.

[0089] 6) When bullet 12 hits the sea ice surface, the power control device is activated after a delay.

[0090] 7) After a 2-second delay, the thermal energy excitation device 5 is activated. The thermal energy excitation device 5 has a temperature range of -10 to 10°C and performs phase change pressurization on the carbon dioxide in the liquid carbon dioxide storage tank 4, increasing the pressure from 5 MPa to 200 MPa.

[0091] 8) When the internal pressure of the bullet body 12 reaches the maximum pressure resistance of the threshold plate of 200MPa, the threshold plate ruptures.

[0092] 9) Carbon dioxide rushes out of the storage tank and enters the high-pressure chamber 2, and is discharged through the energy release port 3.

[0093] 10) Under the energy of ultra-high pressure of 200MPa, the ice-breaking cone 1 impacts the ice layer.

[0094] 11) Based on whether the large-scale connected ice surface breaks and separates under the action of icebreaker cone 1, the sea ice breaking result is judged. By using UAV image recognition technology, the degree of local sea ice crack expansion is identified. If the cracks in multiple adjacent sea ice areas are connected, it can be considered that the ice breaking purpose has been achieved. Then, the ice breaking task can be completed or the operation can be repeated from step 3 above.

[0095] 12) Complete the ice-breaking task.

Claims

1. A method of using an expansion-induced fracturing composite ice-breaking projectile, characterized in that, The expansion-induced fracturing composite ice-breaking projectile includes a main projectile body and a projectile body. The projectile body is loaded inside the main projectile body. The projectile bodies are evenly distributed along the circumference and symmetrically arranged in the upper and lower layers of the main projectile body, with 4 to 6 projectile bodies in each layer. The main projectile includes a main projectile head, a main projectile shell, a projectile band, a microcomputer control system, and a main projectile tail fin. The main projectile head is connected to the main projectile tail fin through the main projectile shell. The projectile band is located in the middle of the main projectile shell. The projectile is located inside the projectile band. The microcomputer control system is located inside the main projectile shell and connects the projectile band and the main projectile shell control line. The projectile includes an injection port, a delivery channel, a tail fin, a liquid carbon dioxide storage tank, an electrical control device, a thermal activation device, a projectile shell, a sealing ring, a threshold plate, an energy release port, a high-pressure chamber, and an ice-breaking cone. The injection port is connected to the liquid carbon dioxide storage tank through the delivery channel. The sealing ring is located at the outlet of the liquid carbon dioxide storage tank. The tail fin is located at the tail end of the projectile. The connection between the tail fin and the inside of the projectile shell is connected to the thermal activation device via the electrical control device. The threshold plate is located at the connection between the liquid carbon dioxide storage tank and the ice-breaking cone. The energy release port is located in the middle of the ice-breaking cone, which is located at the head of the entire projectile. The method of using the expansion-induced fracturing composite ice-breaking projectile includes the following steps: 1) When a sea ice disaster occurs, identify the sea ice area within the range, divide it into n equal parts according to the specifications and destruction radius of the projectile, and formulate a bombing plan: the number of UAVs is n groups, the total number of UAVs and the number of bombs are both 3n, the liquid carbon dioxide filling capacity of the ice-breaking projectile is 10-30 kg, the main projectile is released at 1 / 2 the height of the UAV bombing from the ice surface, the bombing angle range is 15°-60°, and the sea ice area is broken and covered in a ring from the inside to the outside. The delay time of the main projectile releasing the projectile is calculated according to the free fall formula. The flight time and landing position of the projectile are calculated according to the initial velocity and angle of the projectile. The landing time of the farthest projectile is used as the delayed detonation time of all projectiles, and the delay time parameters are set. 2) Inject liquid carbon dioxide into the liquid carbon dioxide storage tank through the injection port, assemble and inspect the main body and the projectile body to ensure that the UAV flies without any abnormalities; 3) The center of each divided sea ice area is used as the bomb drop position. Drones are used to transport the ice-breaking bombs to the designated ice-breaking area for drop. 4) After the bombing mission is completed, control the drone to return to base. Depending on the situation on site, choose to reload the ice-breaking bomb and take off again or end the flight. 5) During the descent of the ice-breaking projectile, the microcomputer control system outputs a control signal to open the main projectile casing and eject the projectile. 6) The electrical control device is delayed upon impact with the sea ice. 7) After a specified delay, the thermal energy excitation device is activated. The thermal energy excitation device pressurizes the carbon dioxide in the liquid carbon dioxide storage tank to 100-300 MPa through phase change, and the gas volume expands to more than 600 times that of the original liquid carbon dioxide. 8) When the internal pressure of the bullet reaches the maximum compressive strength of the threshold plate, the threshold plate ruptures, and the ice-breaking cone impacts the ice layer; 9) Based on whether the large-scale connected ice surface breaks and separates under the action of the icebreaker, judge the sea ice breaking result, identify the degree of local sea ice crack expansion, and if the cracks in multiple adjacent sea ice areas A are connected, it can be considered that the ice breaking purpose has been achieved. Choose to complete the ice breaking task or repeat the operation from step 3 above. 10) Complete the ice-breaking task.

2. The method of using the expansion-induced fracturing composite ice-breaking projectile according to claim 1, characterized in that, The liquid carbon dioxide stored in the liquid carbon dioxide storage tank is discharged as converted carbon dioxide gas through the energy release port located in the middle of the ice-breaking cone of the bullet body.

3. The method of using the expansion-induced fracturing composite ice-breaking projectile according to claim 1, characterized in that, The start-up delay time of the power control device is set to 2-5 seconds.

4. The method of using the expansion-induced fracturing composite ice-breaking projectile according to claim 1, characterized in that, The thermal energy excitation device has a heating range of -10 to 10°C.

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