Recycling system and recycling method for stratospheric airship

Abstract

The invention relates to the technical field of airships, and provides a stratospheric airship recovery system and method. The stratospheric airship recovery system comprises an airship main body, a traction device, a separation device and a recovery ship, the airship main body comprises a floating section and a sea entering section, and the floating section is connected with the sea entering section; the separation device is arranged at the joint of the floating section and the sea-entering section, one end of the traction device is connected with the floating section, and the other end of the traction device is connected with the sea-entering section; the separation device is used for separating the floating section from the sea entering section when the airship lands to the preset height of the sea surface, so that when the floating section floats in the air and the sea entering section falls into the sea, the traction device anchors the floating section; the recovery vessel is used for being accommodated in the sea section and receiving the landing of the floating section. According to the stratospheric airship recovery system, the recovery efficiency of the stratospheric airship is improved, and safe recovery of the stratospheric airship on the sea is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of airships, and in particular to a stratospheric airship recovery system and recovery method. Background Art

[0002] The atmosphere at the altitude where the stratospheric airship flies is thin, and the landing process of the stratospheric airship is a process in which the density of the surrounding atmosphere continues to increase. If the stratospheric airship wants to land in a formed state, it needs to continuously blow air into the airship and use propellers to provide propulsion power. However, the fans and propellers of the stratospheric airship are designed according to the thin atmosphere of the stratosphere, and the low-altitude capacity is insufficient. At the same time, due to energy limitations, the landing and recovery of the stratospheric airship cannot currently achieve a direct flight to the landing field similar to the medium and low-altitude airships. At present, the stratospheric airship adopts a non-formed landing scheme of exhaust landing. After the airship discharges part of the buoyancy gas, the gravity of the airship is greater than the buoyancy and begins to descend. However, as the atmospheric pressure increases during the descent, the airship becomes non-formed and cannot support the opening of the propulsion propeller. The descent process is flying with the wind. Affected by changes in meteorological conditions, the landing position of the airship usually has an error of several thousand meters, and a large landing field area is required on the ground to achieve safe landing and recovery. Landing at sea can solve the problem of the size of the ground landing field, but the equipment faces the risk of being soaked in seawater after landing at sea. If all the equipment on the airship is designed to be anti-seawater soaking, the weight will increase too much, which is difficult to achieve. Summary of the invention

[0003] The present invention provides a stratospheric airship recovery system and recovery method, which are used to solve the problems in the prior art that it is difficult to ensure safe landing when recovering a stratospheric airship on the sea surface and it is difficult to safely recover equipment on the airship.

[0004] In order to solve the above-mentioned technical problems, the present invention is achieved as follows: In a first aspect, the present invention provides a stratospheric airship recovery system, comprising: an airship body, a traction device, a separation device, and a recovery ship; The airship body comprises a floating section and a sea-entering section, wherein the floating section is connected to the sea-entering section; The separation device is arranged at the connection between the floating section and the sea-entering section, one end of the traction device is connected to the floating section, and the other end is connected to the sea-entering section; The separation device is used to separate the floating section from the sea-entering section when the airship body descends to a preset height above the sea surface, so that when the floating section floats in the air and the sea-entering section enters the sea, the traction device anchors the floating section; The recovery ship is used to accommodate the sea-entering section and receive the landing of the floating section.

[0005] According to a stratospheric airship recovery system provided by the present invention, the floating section is the first section of the airship body, and the sea-entering section is the tail section of the airship body; The front section and the rear section are connected to form a whole of the airship body, one end of the traction device is connected to the front section, and the other end is connected to the rear section; The separation device is used to separate the front section from the rear section when the airship body descends to a preset height.

[0006] According to a stratospheric airship recovery system provided by the present invention, the separation device comprises: a cutting rope; The cutting rope is wound around the connection between the first section and the tail section.

[0007] A stratospheric airship recovery system provided according to the present invention further includes: an isolation plate; The isolation plate is arranged between the traction device and the cutting rope; the isolation plate is used to isolate the chemical energy of the cutting rope from the traction device.

[0008] According to a stratospheric airship recovery system provided by the present invention, the isolation plate is arranged in an arch shape; The arcuate surface of the isolation plate faces the traction device.

[0009] According to a stratospheric airship recovery system provided by the present invention, the traction device comprises: a pull tab and a pull rope; There are two pull tabs, one of which is fixedly arranged at the first section, and the other is fixedly arranged at the last section; The two ends of the drawstring are respectively connected to the two pull tabs.

[0010] According to a stratospheric airship recovery system provided by the present invention, the traction device further comprises: a rope storage box; The draw cord is passed through the cord storage box, and when the draw cord is in a retracted state, the draw cord is coiled in the cord storage box.

[0011] According to a stratospheric airship recovery system provided by the present invention, the sea entry section is a sealed cabin independently arranged outside the airship body; The sealed cabin is fixed to the airship body by a connecting mechanism; When the airship body descends to a preset height, the separation device disconnects the connection mechanism to separate the airship body from the sealed cabin.

[0012] According to a stratospheric airship recovery system provided by the present invention, a plurality of traction devices are provided, and the plurality of traction devices are arranged side by side between the floating section and the sea-entering section.

[0013] In a second aspect, the present invention provides a recovery method based on the stratospheric airship recovery system as described above, comprising: When the airship flies to the target sea area, predict the landing trajectory of the airship; Based on the landing trajectory of the airship body, control the airship body to maneuver and control the recovery ship to reach the target sea area; Control the main body of the airship to exhaust and descend, ensure that the total exhaust volume is less than the safety threshold, and ensure that the reduction in the buoyancy of the main body of the airship is less than the weight of the sea entry section; Controlling the separation of the floating section and the sea-entering section of the airship body; The recovery ship is controlled to approach the floating section, salvage the section that has entered the sea, and the floating section is controlled to exhaust and descend until it lands on the recovery ship.

[0014] The stratospheric airship recovery system and recovery method provided by the present invention are as follows: the airship body is arranged to be divided into a floating section and a sea entry section, a traction device connects the floating section and the sea entry section, when the airship body descends to a preset height of the sea surface, a separation device separates the floating section and the sea entry section, so that the sea entry section enters the sea, and the floating section floats in the air under the traction of the sea entry section, the recovery ship first receives the sea entry section, and also receives the floating section on the recovery ship through exhaust, because important equipment is installed in the floating section, it is not soaked by seawater during recovery, and the traction device enables the sea entry section to anchor the floating section, so as to avoid the floating section from being lifted into the air again to affect recovery, thereby improving the recovery efficiency of the stratospheric airship and ensuring the safe recovery of the stratospheric airship at sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the stratospheric airship provided by the present invention in a flying state.

[0017] Figure 2 It is a schematic diagram of the stratospheric airship provided by the present invention in a recovery state.

[0018] Figure 3 It is a schematic flow chart of a recovery method based on a stratospheric airship recovery system provided by the present invention.

[0019] Reference numerals: 1. Airship body; 11. Floating section; 12. Sea-entering section; 2. Traction device; 21. Pull tab; 22. Pull rope; 23. Rope storage box; 3. Separation device; 4. Recovery boat; 5. Propeller; 6. Exhaust valve; 7. Nacelle; 8. Hook rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figures 1 to 3 , the stratospheric airship recovery system and recovery method provided by the embodiments of the present invention are described in detail through specific embodiments and application scenarios.

[0022] First, as Figure 1 and Figure 2 As shown, this embodiment provides a stratospheric airship recovery system, including: an airship body 1, a traction device 2, a separation device 3 and a recovery ship 4.

[0023] The airship body 1 includes a floating section 11 and a sea-entering section 12 , and the floating section 11 is connected to the sea-entering section 12 .

[0024] The separation device 3 is arranged at the connection between the floating section 11 and the sea-entering section 12 . One end of the traction device 2 is connected to the floating section 11 , and the other end is connected to the sea-entering section 12 .

[0025] The separation device 3 is used to separate the floating section 11 and the sea-entering section 12 when the airship body 1 descends to a preset height above the sea surface, so that the traction device 2 can anchor the floating section 11 when the floating section 11 floats in the air and the sea-entering section 12 falls into the sea.

[0026] The recovery vessel 4 is used to accommodate the sea-entering section 12 and receive the landing of the floating section 11 .

[0027] It is understandable that the airship body 1 is provided with a floating section 11 and a sea-entering section 12. The floating section 11 is used to float in the air when the airship body 1 is recovered, and the sea-entering section 12 is used to fall into the sea when the airship body 1 is recovered. Due to the separation of the sea-entering section 12, the weight of the airship body 1 is reduced, so that the floating section 11 continues to float in the air. In addition, the floating section 11 and the sea-entering section 12 are connected by a traction device 2. The floating section 11 is subjected to the traction force of the traction device 2 and will not be lifted off again. The traction device 2 anchors the floating section 11, so that the floating section 11 and the sea-entering section 12 restrict each other. Even under the action of the sea breeze, the floating section 11 can only drag the sea-entering section 12 to move slowly along the sea surface.

[0028] The propeller 5, exhaust valve 6 and pod 7 on the airship body 1 are all arranged in the floating section 11. The sea entry section 12 only contains part of the capsule, which can withstand the immersion of seawater falling into the sea. The propeller 5 is arranged on the upper side of the floating section 11, and the propeller 5 is used to provide power and control direction. The exhaust valve 6 is used to exhaust the airship body 1 so that the airship body 1 descends. The pod 7 is used to load various equipment for controlling the airship body 1 or data collection and data storage.

[0029] Specifically, the airship body 1 can be cut into two parts, namely the floating section 11 and the sea-entering section 12, or an additional mobile cabin can be provided outside the airship body 1 and separated from the airship body 1 to reduce the weight of the airship body 1.

[0030] Furthermore, a separation point can be set between the floating section 11 and the sea-entering section 12, and the separation point can be triggered by the separation device 3 in a mechanical or electronic manner to achieve rapid separation of the floating section 11 and the sea-entering section 12. A divider can also be set between the floating section 11 and the sea-entering section 12 to cut the airship body 1 to achieve rapid separation of the floating section 11 and the sea-entering section 12.

[0031] The recovery ship 4 is used to recover the airship body 1. The sea-entering section 12 is first salvaged from the sea and stored on the recovery ship 4, and then the floating section 11 is exhausted so that the floating section 11 is recovered on the recovery ship 4. The propeller 5, exhaust valve 6 and pod 7 on the floating section 11 are safely recovered, and the equipment in the pod 7 can be reused.

[0032] The stratospheric airship recovery system provided by the present invention is characterized in that the airship body 1 is arranged as a floating section 11 and a sea entry section 12, and a traction device 2 connects the floating section 11 and the sea entry section 12. When the airship body 1 descends to a preset height of the sea surface, a separation device 3 separates the floating section 11 and the sea entry section 12, so that the sea entry section 12 falls into the sea, and the floating section 11 floats in the air under the traction of the sea entry section 12. The recovery ship 4 first receives the sea entry section 12, and also receives the floating section 11 on the recovery ship 4 through exhaust. Since important equipment is installed in the floating section 11, it is not soaked in seawater during recovery, and the traction device 2 enables the sea entry section 12 to anchor the floating section 11, so as to avoid the floating section 11 being lifted into the air again to affect recovery, thereby improving the recovery efficiency of the stratospheric airship and ensuring the safe recovery of the stratospheric airship at sea.

[0033] In some embodiments, Figure 1 and Figure 2 As shown, the floating section 11 of this embodiment is the front section of the airship body 1, and the sea-entering section 12 is the rear section of the airship body 1.

[0034] The front section and the rear section are connected to form an integral body of the airship 1 , one end of the traction device 2 is connected to the front section, and the other end is connected to the rear section.

[0035] The separation device 3 is used to separate the front section and the rear section when the airship body 1 descends to a preset height.

[0036] It is understandable that the front and rear sections of the airship body 1 of this embodiment are separated by the separation device 3 when the airship is recovered, so that the front and rear sections of the airship body 1 are separated, the rear section sinks into the sea, and the front section is lifted into the air under the action of buoyancy.

[0037] The propeller 5, the exhaust valve 6 and the pod 7 are installed in the front section. The front section and the tail section form a whole of the airship body 1 when they are not separated, and become two parts after separation. The traction device 2 is connected to the front section and the tail section respectively to anchor the front section after the tail section enters the sea.

[0038] In this embodiment, the floating section 11 is configured as the head section of the airship body 1, and the sea-entering section 12 is configured as the tail section of the airship body 1. When the airship body 1 is recovered, the head section and the tail section are separated by the separation device 3, and the tail section enters the sea, so that the head section carrying important equipment floats in the air and is recovered from the air. In this embodiment, the separation and control of the head section and the tail section of the airship body 1 enable the stratospheric airship to land safely on the sea surface, and reduce the risk of important equipment on the airship being soaked by seawater.

[0039] In some embodiments, Figure 1 and Figure 2 As shown, the separation device 3 of this embodiment includes: a cutting rope. The cutting rope is wound around the connection between the first section and the tail section.

[0040] It is understandable that the cutting rope is a special type of pyrotechnics, mainly used for explosive cutting operations. The cutting rope uses the energy-gathering effect, so that after the explosive is detonated, the explosion products cut the airship body 1 under high temperature and high pressure, and can ensure that the cutting direction is along the extension direction of the connection between the first section and the tail section.

[0041] In actual use, the cutting rope is wound into a circle along the connection between the first section and the tail section, and is pressed against the outer side of the shell of the airship body 1 .

[0042] Since the cutting rope can efficiently and accurately cut the connection between the first section and the tail section, the first section and the tail section can be cut and separated in a short time, and the cutting effect is better.

[0043] In some embodiments, this embodiment further includes: an isolation plate.

[0044] The isolation plate is arranged between the traction device 2 and the cutting rope. The isolation plate is used to isolate the chemical energy of the cutting rope from the traction device 2.

[0045] It is understandable that the isolation plate is set at the intersection of the traction device 2 and the cutting rope. The isolation plate isolates the cutting rope and the traction device 2 so that the chemical energy generated by the cutting rope during the explosion will not affect the traction device 2, thereby ensuring the integrity of the traction device 2.

[0046] Since the cutting rope is arranged at the connection between the first section and the last section, and the traction device 2 is also arranged between the first section and the last section, the cutting rope and the traction device 2 have overlapping parts. The isolation plate is arranged at the overlapping point of the cutting rope and the traction device 2 to prevent the chemical energy of the cutting rope from affecting the traction device 2.

[0047] Specifically, the isolation plate can be in the shape of a flat plate or a step, as long as it can isolate the cutting rope from the traction device 2 .

[0048] In some embodiments, the isolation plate of this embodiment is arranged in an arched shape, and the arched surface of the isolation plate faces the traction device 2 .

[0049] It is understandable that the arcuate surface of the isolation plate of this embodiment faces the traction device 2, so as to form an arc-shaped isolation space between the cutting rope and the isolation plate. When the cutting rope explodes, the isolation space isolates the chemical energy from the traction device 2, so that the cutting rope can explode in the isolation space without affecting the normal operation of the traction device 2.

[0050] In some embodiments, Figure 1 and Figure 2 As shown, the traction device 2 of this embodiment includes: a pull tab 21 and a pull rope 22.

[0051] There are two pull tabs 21 , one of which is fixedly arranged at the first section, and the other is fixedly arranged at the last section.

[0052] Two ends of the pull rope 22 are connected to the two pull tabs 21 respectively.

[0053] It is understandable that the pull tab 21 is used to connect the pull rope 22 and the airship body 1. The pull tab 21 is usually welded to the outer shell of the airship body 1 to withstand the tension.

[0054] The pull rope 22 is suspended on the pull tab 21, and the two ends of the pull rope 22 are respectively connected to the pull tab 21 of the first section and the pull tab 21 of the tail section. When the first section and the tail section are combined, the pull rope 22 is gathered on the outer shell of the airship body 1. When the first section and the tail section are separated, the pull rope 22 is pulled apart and generates pulling force on both the first section and the tail section. After the tail section sinks into the sea, the pulling force of the pull rope 22 on the tail section has a dragging force on the first section, pulling the first section to float in the air above the tail section.

[0055] Specifically, the pull rope 22 is made of high-strength plastic.

[0056] In this embodiment, a pull tab 21 and a pull rope 22 are provided on the traction device 2, the pull rope 22 is fixed to the head section and the tail section through the pull tab 21, and the head section and the tail section are connected by the pull rope 22, so as to ensure that the head section is anchored after the tail section enters the sea, so as to facilitate the subsequent recovery of the head section. The pull rope 22 has a light structure and a small volume, and can be carried and used together with the airship body 1.

[0057] In some embodiments, Figure 1 and Figure 2 As shown, the traction device 2 of this embodiment further includes: a rope storage box 23.

[0058] The pull rope 22 is passed through the rope storage box 23 . When the pull rope 22 is in a retracted state, the pull rope 22 is coiled in the rope storage box 23 .

[0059] It is understandable that when the first section and the tail section are in the combined state, the drawstring 22 does not need to be straightened, and the longer drawstring 22 is stored in the rope storage box 23. When the first section and the tail section are in the separated state, the drawstring 22 is stretched and straightened under the pulling force of the first section and the tail section, and as the drawstring 22 is stretched, the drawstring 22 in the rope storage box 23 is released. The rope storage box 23 can store the drawstring 22 and can also release the drawstring 22, and ensures the aesthetics of the drawstring 22 when it is stored, and is conducive to the rapid release of the drawstring 22 when it is stretched.

[0060] In some embodiments, the sea entry section 12 of this embodiment is a sealed cabin independently arranged outside the airship body 1.

[0061] The sealed cabin is fixed to the airship body 1 using a connecting mechanism.

[0062] When the airship body 1 descends to a preset height, the separation device 3 disconnects the connection mechanism to separate the airship body 1 from the sealed cabin.

[0063] It is understandable that the sealed cabin of this embodiment only contains the capsule, and does not contain important equipment. The floating section 11 and the sea-entering section 12 are not integrally arranged, and the sea-entering section 12 is a sealed cabin connected to the airship body 1 alone.

[0064] When the airship body 1 is flying, the sealed cabin is fixed to the airship body 1 by a connecting mechanism and flies with the airship body 1. When the airship body 1 needs to land on the sea, the separation device 3 disconnects the connecting mechanism to separate the airship body 1 from the sealed cabin. When the sealed cabin falls into the sea, the weight of the airship body 1 is reduced and it floats in the air under the action of buoyancy. The sealed cabin and the airship body 1 are pulled by the traction device 2, and the sealed cabin has an anchoring effect on the airship body 1.

[0065] In this embodiment, a sealed cabin independent of the airship body 1 is provided, and when the airship body 1 is separated from the sealed cabin, the appearance of the airship body 1 does not need to be destroyed, thereby achieving complete recovery of the airship body 1 and enabling the airship body 1 to be reused.

[0066] In some embodiments, Figure 1 and Figure 2 As shown, in this embodiment, a plurality of traction devices 2 are provided, and the plurality of traction devices 2 are arranged side by side between the floating section 11 and the sea-entering section 12 .

[0067] It is understandable that, since the traction device 2 pulls the floating section 11 and the sea section 12 from both ends after the floating section 11 and the sea section 12 are separated, multiple traction devices 2 are provided, so that there are multiple pulling points on the floating section 11 and the sea section 12. Multiple pulling points act together between the floating section 11 and the sea section 12, so that the pulling force between the floating section 11 and the sea section 12 is stronger, which not only ensures the anchoring effect of the floating section 11, but also facilitates the effective pulling of the sea section 12, and is more conducive to the salvage of the sea section 12.

[0068] In a second aspect, in some embodiments, as Figure 3 As shown, this embodiment provides a recovery method of the stratospheric airship recovery system as above, comprising the following steps: Step 311 , when the airship body 1 flies to the target sea area, the landing trajectory of the airship body 1 is predicted.

[0069] It is understandable that when the airship body 1 flies to the target sea area and prepares to land, the predicted landing point after exhaust descent starting from the flight position of the airship body 1 is calculated in real time based on the wind field data from the ground to the flight altitude of the airship body 1 and the airship exhaust descent model.

[0070] Step 312, based on the landing trajectory of the airship body 1, control the airship body 1 to perform maneuvering flight, and control the recovery ship 4 to reach the target sea area.

[0071] It is understandable that, according to the predicted landing trajectory of the airship body 1, the airship body 1 is controlled to perform maneuvering flight, and the flight speed and flight direction of the airship body 1 are adjusted so that the predicted landing point of the airship calculated in real time enters the center of the target landing sea area. At the same time, the recovery ship 4 is controlled to reach the target sea area, and the sea surface wind speed of the target landing sea area is obtained. When the sea surface wind speed is less than the allowable landing threshold of the airship, the landing conditions of the airship body 1 are mature.

[0072] Step 313 , controlling the airship body 1 to exhaust and descend, ensuring that the total exhaust volume is less than a safety threshold, and ensuring that the reduction in buoyancy of the airship body 1 is less than the weight of the sea-entering section 12 .

[0073] It is understandable that when the real-time predicted landing point of the airship body 1 enters the center of the target landing sea area and the sea surface wind field of the target sea area meets the landing conditions, the exhaust valve 6 of the airship body 1 is controlled to perform an exhaust descent operation.

[0074] Furthermore, the exhaust volume of the airship body 1 is controlled during the descent of the airship body 1 to ensure that the total exhaust volume is less than the safety threshold, so that the reduction in buoyancy of the airship body 1 is less than the weight of the sea entry section 12, ensuring that after the subsequent sea entry section 12 is separated from the floating section 11, the sea entry section 12 can smoothly fall into the sea under its own weight.

[0075] Step 314, controlling the floating section 11 and the sea-entering section 12 of the airship body 1 to separate.

[0076] It is understandable that when the airship body 1 descends to a preset height through exhaust operation, the separation device 3 separates the floating section 11 from the sea-entering section 12. The sea-entering section 12 falls into the sea under the action of gravity, and the floating section 11 still floats in the air due to the reduction of gravity. At this time, since the floating section 11 and the sea-entering section 12 are connected by the traction device 2, the floating section 11 will not be lifted into the air again. The floating section 11 drags the sea-entering section 12 to move slowly under the action of the sea breeze.

[0077] Step 315 , control the recovery ship 4 to approach the floating section 11 , salvage the sea-entering section 12 , and control the floating section 11 to exhaust air and descend until it lands on the recovery ship 4 .

[0078] It is understandable that the recovery ship 4 is driven close to the floating section 11, the hook rod 8 is used to hook the pull rope 22 to the recovery ship 4 and the pull rope 22 is tied to the deck of the recovery ship 4. The sea-entering section 12 is salvaged and placed on the recovery ship 4. The exhaust valve 6 of the floating section 11 is controlled to exhaust air, so that the floating section 11 slowly lands on the recovery ship 4, and the airship body 1 and the equipment are disassembled and recovered.

[0079] The recovery method of this embodiment separates the airship body 1 into the floating section 11 and the sea-entering section 12, so that a part of the weight of the airship body 1 is separated, and the separated sea-entering section 12 falls into the sea, so that the floating section 11 can float in the air with reduced weight, and at the same time, the sea-entering section 12 anchors the floating section 11 through the traction device 2, which is convenient for salvaging the sea-entering section 12 and exhaust recovery of the floating section. Since important equipment is installed in the floating section 11, the important equipment falls into the recovery ship 4 without being soaked by seawater, ensuring the reuse of important equipment.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stratospheric airship recovery system, characterized in that: include: The airship body, the towing device, the separation device and the recovery boat; The airship body comprises a floating section and a sea-entering section, wherein the floating section is connected to the sea-entering section; The separation device is arranged at the connection between the floating section and the sea-entering section, one end of the traction device is connected to the floating section, and the other end is connected to the sea-entering section; The separation device is used to separate the floating section from the sea-entering section when the airship body descends to a preset height above the sea surface, so that when the floating section floats in the air and the sea-entering section enters the sea, the traction device anchors the floating section; The recovery ship is used to accommodate the sea-entering section and receive the landing of the floating section.

2. The stratospheric airship recovery system according to claim 1, characterized in that: The floating section is the first section of the airship body, and the sea-entering section is the tail section of the airship body; The front section and the rear section are connected to form a whole of the airship body, one end of the traction device is connected to the front section, and the other end is connected to the rear section; The separation device is used to separate the front section from the rear section when the airship body descends to a preset height.

3. The stratospheric airship recovery system according to claim 2, characterized in that: The separation device comprises: a cutting rope; The cutting rope is wound around the connection between the first section and the tail section.

4. The stratospheric airship recovery system according to claim 3, characterized in that: Also includes: Isolation panels; The isolation plate is disposed between the traction device and the cutting cable; The isolation plate is used to isolate the chemical energy of the cutting rope from the traction device.

5. The stratospheric airship recovery system according to claim 4, characterized in that: The isolation plate is arranged in an arch shape; The arcuate surface of the isolation plate faces the traction device.

6. The stratospheric airship recovery system according to claim 2, characterized in that: The traction device comprises: a pull tab and a pull rope; There are two pull tabs, one of which is fixedly arranged at the first section, and the other is fixedly arranged at the last section; The two ends of the drawstring are respectively connected to the two pull tabs.

7. The stratospheric airship recovery system according to claim 6, characterized in that: The traction device also includes: a rope storage box; The draw cord is passed through the cord storage box, and when the draw cord is in a retracted state, the draw cord is coiled in the cord storage box.

8. The stratospheric airship recovery system according to claim 1, characterized in that: The sea entry section is a sealed cabin independently arranged outside the airship body; The sealed cabin is fixed to the airship body by a connecting mechanism; When the airship body descends to a preset height, the separation device disconnects the connection mechanism to separate the airship body from the sealed cabin.

9. The stratospheric airship recovery system according to claim 1, characterized in that: There are multiple traction devices, and the multiple traction devices are arranged side by side between the floating section and the sea-entering section.

10. A recovery method based on the stratospheric airship recovery system according to any one of claims 1 to 9, characterized in that: include: When the airship flies to the target sea area, predict the landing trajectory of the airship; Based on the landing trajectory of the airship body, control the airship body to maneuver and control the recovery ship to reach the target sea area; Control the main body of the airship to exhaust and descend, ensure that the total exhaust volume is less than the safety threshold, and ensure that the reduction in the buoyancy of the main body of the airship is less than the weight of the sea entry section; Controlling the separation of the floating section and the sea-entering section of the airship body; The recovery ship is controlled to approach the floating section, salvage the section that has entered the sea, and the floating section is controlled to exhaust and descend until it lands on the recovery ship.

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