CN115303433A - Carrier-borne inflation recovery platform of fixed-wing unmanned aerial vehicle, unfolding and recovery method - Google Patents
Carrier-borne inflation recovery platform of fixed-wing unmanned aerial vehicle, unfolding and recovery method Download PDFInfo
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- CN115303433A CN115303433A CN202210830535.6A CN202210830535A CN115303433A CN 115303433 A CN115303433 A CN 115303433A CN 202210830535 A CN202210830535 A CN 202210830535A CN 115303433 A CN115303433 A CN 115303433A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/50—Vessels or floating structures for aircraft
- B63B35/52—Nets, slipways or the like, for recovering aircraft from the water
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Abstract
The invention relates to a carrier-borne inflation recovery platform of a fixed-wing unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. The air bag is used as a main supporting part of the platform, and the steel cable is used as a tension part, so that the function similar to a beam structure is realized; in the process of contraction and expansion, the internal pressure of each sub-air bag, the tension of the steel cables on the two sides of the upper end and the tension of the steel cable on the lower end are jointly controlled by the rope control system, the air inflation and deflation system and the remote control valve, so that the sub-air bags are sequentially contracted and expanded, and the function of contracting and expanding the platform is realized. The platform does not occupy the deck space, has light weight, is telescopic, and has little influence on the outer contour of the ship in a non-working state.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a carrier-borne inflation recovery platform of a fixed-wing unmanned aerial vehicle, and an unfolding and recovery method of the carrier-borne inflation recovery platform.
Background
Generally, unmanned planes have stronger fuselages than manned planes and are not limited by the physiological conditions of pilots, so that some more extreme landing recovery methods can be adopted. The unmanned aerial vehicle carrier landing recovery meets the economic benefit requirement of the unmanned aerial vehicle with safety, reliability, good maneuverability, multiple use times, small damage to the body and airborne equipment, simple and convenient operation and convenient maintenance. The conventional unmanned aerial vehicle small ship recovery method mainly comprises the modes of collision net landing recovery, skyhook recovery, parachute descent recovery and the like.
The recovery mode of net collision landing is that a recovery net is opened at the tail part of a ship, so that the unmanned aerial vehicle directly flies into the net, after the unmanned aerial vehicle is successfully captured, the height is reduced, and the unmanned aerial vehicle is manually transported out of the net. At present, 4 schemes of single-net three-rod, double-net double-rod, single-net single-rod and single-net double-rod are adopted in a typical structure for collision net recovery of unmanned aerial vehicles at home and abroad, the two schemes need an energy absorption buffer device, the single-net single-rod needs a rotary driving device and a damper, the single-net double-rod structure mainly depends on elastic deformation of a net body and a support to absorb energy of the unmanned aerial vehicles, and an additional damping buffer device is not needed. The deck space required by the net collision recovery mode is small, equipment is simple, the recovered unmanned aerial vehicle does not need a carrier landing device, the requirement on the tracking precision of a carrier landing track is low, and only the net collision speed as low as possible needs to be maintained.
The skyhook recycling technology is developed on the basis of a net hitting recycling technology. The top hook recovery system generally mainly comprises a capture device (unmanned aerial vehicle wingtip small hook, a recovery frame and a recovery rope), an energy absorption buffer device and a guide device. Near guiding device guides unmanned aerial vehicle to capture device, hits the back of retrieving the rope when the unmanned aerial vehicle wing, retrieves the rope and slides to the wingtip along the wing, and the wingtip hooklet catches on and locks and retrieve the rope, and the engine parks this moment, later unmanned aerial vehicle can do the deceleration motion of circling round around retrieving the rope, takes off the completion when the swing range reduces to the manual work after the certain degree and retrieves. The recovery mechanism is simple and is suitable for ships with small space. Meanwhile, the requirements of takeoff and landing of a large unmanned aerial vehicle can be met.
Parachute recovery is the recovery mode of realizing speed buffering by parachute opening when the unmanned aerial vehicle drives the parachute to reach a recovery area and a proper height, and is widely applied to low-speed unmanned aerial vehicles. Unmanned aerial vehicle need equip and retrieve the parachute, decelerates unmanned aerial vehicle through the parachute to the realization is with less speed contact ground, thereby reaches the recovery purpose. The method has the advantages of light weight, low requirement on sites, small volume after packaging, relatively low cost, stable performance, simple process, small dynamic load for opening the umbrella and the like.
Disclosure of Invention
Technical problem to be solved
The recovery mode of net collision and carrier landing has the following defects: 1. when the net is collided, the transverse speed and the sideslip angle are reduced as much as possible, otherwise, the probability of damage of the unmanned aerial vehicle is increased; 2. for the unmanned aerial vehicle using the propeller, the blades are easy to break off or the blades cut off the recovery net during recovery, so that the damage risk and the maintenance cost of the unmanned aerial vehicle are increased, and the preparation time and the working efficiency of the recovery device are influenced; 3. the recovery method has high manual operation amount and is difficult to realize mechanization.
How to ensure that the unmanned aerial vehicle can decelerate in an expected posture in the process of hook recovery is a big difficulty in recovery operation.
The parachute in the parachute recovery method is very susceptible to wind, and errors cannot be corrected after the parachute is opened, so that the unmanned aerial vehicle is very prone to colliding deck buildings and the like.
The development process from first landing on a ship by means of pilot flight technology in 1911 to parachute/parafoil recovery, net collision recovery and the like is carried out. However, the method is only suitable for recovering the small unmanned aerial vehicle, and no better method exists for recovering marine ships of medium and large unmanned aerial vehicles at present. Therefore, research on a medium-large unmanned aerial vehicle recovery platform for small ships needs to be developed, and a new guarantee is provided for improving the maritime combat capability of China.
In order to overcome the defects of the prior art, the invention provides a carrier-based inflatable recovery platform of a fixed-wing unmanned aerial vehicle. The air bag is used for providing support for the platform, and the steel cable is used for providing tension for the upper part of the air bag. The platform does not occupy the deck space, has light weight, is telescopic, and has little influence on the outer contour of the ship in a non-working state.
Technical scheme
A carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising a fixed end structure, an air bag steel cable supporting structure, a flexible steel cable, an air bag, a flexible braided belt, a cover plate and a remote control valve; the fixed end structure is fixedly connected with the tail part of the ship and the air bag reinforcing frame on the first sub air bag; the air bag steel cable supporting structure is connected with the air bag and the flexible steel cable; the air bag consists of twelve sections of sub air bags which are connected end to end along the axial direction, remote control valves are arranged at all junctions, and an inflation and deflation system is arranged at the first sub air bag and is connected with the fixed end structure; the flexible braided belt is wound on the steel cable at the upper end of the platform.
The invention further adopts the technical scheme that: the fixed end structure is a hinge structure, and when the platform is in a working state, the fixed end structure is in a locked state; when the platform is completely recovered or is unfolded, the platform can be in a rotatable state, so that the platform can be folded and vertically placed at the tail of a ship when in a non-working state.
The further technical scheme of the invention is as follows: the air bag steel cable supporting structure comprises an air bag reinforcing frame and a supporting rib plate, wherein the shape of the air bag reinforcing frame is the same as that of the section of the air bag, and the air bag reinforcing frame is attached to the surface of the air bag and fixedly connected with the air bag; each supporting rib plate is a rectangular metal plate, through holes allowing steel cables on two sides of the upper end of the supporting rib plate to pass through are formed in the upper position of each supporting rib plate, and the supporting rib plates are fixedly connected with the air bag reinforcing frame, so that loads borne by the steel cables on the upper end of the supporting rib plate are transmitted to the air bag, and the distance between the steel cables on the upper end of the supporting rib plate is kept unchanged.
The further technical scheme of the invention is as follows: the bottom end of the air bag reinforcing frame is provided with a limiting hole, so that the phenomenon of slipping of a steel cable at the lower end of the air bag reinforcing frame when the platform runs is prevented.
The invention further adopts the technical scheme that: the flexible steel cables consist of five steel cables at the upper ends of the supporting rib plates and two steel cables at the lower ends of the air bag reinforcing frames, the middle three of the five steel cables at the upper ends of the supporting rib plates are fixedly connected with each supporting rib plate, and the steel cables at two sides penetrate through holes in each supporting rib plate; at the first sub-air bag, the steel cables on the two sides of the upper end of the support rib plate and the lower end of the air bag reinforcing frame are connected with a rope control system; at the position of the peripheral air bag, the steel cable at the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame are fixed on the peripheral rib plate, so that a form of winding the flexible steel cable along the axial direction of the air bag in the circumferential direction is formed.
The invention further adopts the technical scheme that: the cross section of each sub-air bag is in the shape of two intersected outer contour parts which cross the circle center, and the junction of each sub-air bag is positioned at the air bag reinforcing frame.
The further technical scheme of the invention is as follows: the sub-air bag material is a nylon-rubber composite material.
A method for unfolding a carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising the following steps: the locking mechanism of the fixed end structure is released, the state that the platform is attached to the ship body from the vertical rear deck is changed into the state parallel to the rear deck, the fixed end structure is adjusted to be locked, all the remote control valves are kept in the closed state, then the steel cables on the two sides of the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame are pulled through the rope control system, and meanwhile, the root air bag is inflated through the inflation and deflation system, so that the first air bag at the root part is gradually unfolded; when proper pressure is built for the first sub-air bag, the sub-air bag is in a balanced state under the action of axial force generated by internal pressure and tensile force generated by steel cables on two sides of the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame, and then a remote control valve between the first sub-air bag and the second sub-air bag is opened to inflate the second air bag, so that the expansion of the first two sections of sub-air bags is realized; repeating the above operations, and completely deploying the 12-section airbag in sequence; when each sub-airbag is unfolded to a fixed position, the rope control system fixes the 4 steel ropes, and the inflation and deflation system keeps the pressure value inside the airbag constant.
A recovery method of a carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising the following steps: firstly, closing each remote control valve, keeping the internal pressure of each air bag independent and unchanged, then pulling the steel cables on the two sides of the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame through the rope control system, wherein the internal pressure of the first sub air bag is inevitably increased at the moment, and then automatically deflating the first sub air bag through the inflation and deflation system, so that the first sub air bag is recycled; after the first sub-air bag is completely recovered, opening a remote control valve between the first sub-air bag and the second sub-air bag, and carrying out steel cable pulling and air releasing operation on the second sub-air bag to realize the recovery of the second sub-air bag; repeating the above operations, and sequentially recovering 12 sections of air bags; finally, the recovered 12-section air bag is rotated to be vertical to the rear deck through the rotation of the fixed end structure.
Advantageous effects
According to the ship-borne inflatable recovery platform of the fixed-wing unmanned aerial vehicle, the airbag is used as a main supporting component of the platform, and the steel cable is used as a tension component, so that the function similar to a beam structure is realized; in the process of contraction and expansion, the internal pressure of each sub-air bag, the tension of the steel cables on the two sides of the upper end and the tension of the steel cable on the lower end are jointly controlled by the rope control system, the air inflation and deflation system and the remote control valve, so that the sub-air bags are sequentially contracted and expanded, and the function of contracting and expanding the platform is realized.
The carrier-borne inflatable recovery platform of the fixed-wing unmanned aerial vehicle does not occupy the space of a deck of a ship in a working/non-working state, and is perpendicular to a rear deck in the non-working state, so that the outer contour of the ship is hardly changed, and the pneumatic characteristic and the electromagnetic characteristic of the ship are not influenced; in the working state, the platform is inflated to be flatly unfolded from the rear part of the deck, and the runway surface is not different from the traditional runway. Therefore, the adaptation platform of the carrier-based unmanned aerial vehicle is not required to be modified.
Drawings
The drawings, in which like reference numerals refer to like parts throughout, are for the purpose of illustrating particular embodiments only and are not to be considered limiting of the invention.
FIG. 1 is a schematic view of a working state of a carrier-based inflatable recovery platform of a fixed-wing unmanned aerial vehicle;
FIG. 2 is an oblique view of the present invention after inflation and deployment;
FIG. 3 is an elevational view of the present invention after inflation and deployment;
FIG. 4 is a front view of the present invention during recovery;
FIG. 5 is a front elevational view of the invention after it has been fully retracted;
FIG. 6 is a side view of the leading sub-airbag;
FIG. 7 is a cross-sectional view at a mid-position plane of the air bag reinforcing frame;
FIG. 8 is a partial view of the root of the platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 6-8, a carrier-based inflatable recovery platform of a fixed-wing unmanned aerial vehicle comprises a fixed end structure 1, an air bag steel cable supporting structure, a flexible steel cable, an air bag 2, a flexible woven belt 3 and a remote control valve 13. The fixed end structure is fixedly connected with the tail part of the ship and the air bag reinforcing frame on the first sub air bag; the air bag steel cable supporting structure is connected with the air bag and the flexible steel cable; the air bag is composed of twelve sections of sub air bags connected end to end, remote control valves are arranged at all junctions, and an inflation and deflation system is arranged at the first sub air bag and connected with the fixed end structure; the flexible braided belt is wound on the steel cable at the upper end of the platform.
One end of the fixed end structure 1 is fixed on the tail part 4 of the ship, the other end of the fixed end structure is fixedly connected with an air bag reinforcing frame 5 on the first sub air bag, and a hinge point which can move with single degree of freedom and can be locked is arranged in the middle of the fixed end structure; when the platform is in a working state, the fixed end structure 1 is in a locking state; when the platform is completely recovered or is unfolded, the platform can be in a rotatable state, so that the platform can be folded and vertically placed at the tail of a ship when in a non-working state.
The remote control valve 13 is arranged at the junction of each sub-air bag, and the sub-air bags are sequentially contracted and expanded through the matching work of the valves.
The air bag steel cable supporting structure comprises an air bag reinforcing frame 5 and a supporting rib plate 6, wherein the shape of the air bag reinforcing frame 5 is the same as that of the section of an air bag, the air bag reinforcing frame is attached to the surface of the air bag 2 and fixedly connected with the air bag, and the air bag steel cable supporting structure has the functions of limiting the maximum deformation of the air bag and increasing the allowable value of the internal pressure of the air bag so as to improve the bearing capacity of the structure; each supporting rib plate 6 is a rectangular metal plate, the upper part of the supporting rib plate is provided with a through hole for allowing the steel cables at the two sides of the upper end of the supporting rib plate to pass through, and the supporting rib plate is fixedly connected with the air bag reinforcing frame 5, so that the load borne by the steel cable 7 at the upper end of the supporting rib plate is transmitted to the air bag 2, and the distance between the steel cables at the upper end of the supporting rib plate is kept unchanged.
The flexible steel cables consist of five steel cables 7 at the upper ends of the support ribbed plates and two steel cables 8 at the lower ends of the air bag reinforcing frames, the middle three of the five steel cables 7 at the upper ends of the support ribbed plates are fixedly connected with each support ribbed plate 6, and the steel cables at the two sides penetrate through holes in each support ribbed plate; at the first sub-air bag, steel cables on two sides of the upper end of the support ribbed slab and a steel cable 8 at the lower end of the air bag reinforcing frame are connected with a rope control system; at a peripheral air bag, a steel cable 7 at the upper end of a support rib plate and a steel cable 8 at the lower end of an air bag reinforcing frame are both fixed on the peripheral rib plate, a form of winding the flexible steel cable along the axial direction of the air bag 2 in the circumferential direction is formed, the inflated air bag 2 is used for providing axial and normal support rigidity, the steel cable 7 at the upper end of the support rib plate is used for bearing tensile load generated in the steel cable after a platform is loaded, the axial rigidity of the air bag 2 is used for bearing pressure load, and the normal rigidity of the air bag 2 is used for providing normal support for the integral structure, so that upper and lower edge strips and a web plate of an engineering beam are simulated respectively, and the aim of bearing bending moment as main load in the structure is achieved.
The air bag 2 consists of twelve sections of sub air bags which are connected end to end along the axial direction, the cross section of each sub air bag is in the shape of two intersected outer contour parts which cross the circle center, and the junction of each sub air bag is positioned at the air bag reinforcing frame 5, so that better air tightness is ensured, and the landing platform is prevented from being twisted when the airplane lands under the condition of poor centering performance; the first sub-air bag is provided with an inflation and deflation system 10 and is connected with the fixed end structure 1 through an air bag reinforcing frame.
The flexible braided belt 3 is wound on the steel cable 7 at the upper end of the support rib plate, so that a support effect is provided for the airplane, and impact load generated when the airplane lands is sequentially transmitted to the steel cable 7 at the upper end of the support rib plate, the steel cable 8 at the lower end of the air bag reinforcing frame, the support rib plate 6, the air bag reinforcing frame 5 and the air bag 2.
Limiting holes 11 are formed in the bottom end of the air bag reinforcing frame 5, and the phenomenon that the steel cable 8 at the lower end of the air bag reinforcing frame slips when the platform runs is prevented.
The air bag is made of a nylon-rubber composite material, and sufficient axial tensile rigidity, good air tightness and high flexibility of the air bag are guaranteed.
The working principle of the carrier-borne inflatable recovery platform of the fixed-wing unmanned aerial vehicle provided by the invention is as follows:
referring to fig. 1-5, when the drone is ready for recovery, the recovery platform in the stowed state is ready for deployment. Firstly, the locking mechanism of the fixed end structure 1 is released, the state that the platform is attached to the ship body from the vertical rear deck is changed into the state parallel to the rear deck, then the fixed end structure 1 is adjusted again to be locked, all the remote control valves 13 are kept in the closed state, then the steel cables on the two sides of the upper end of the supporting rib plate and the steel cable 8 at the lower end of the air bag reinforcing frame are pulled through the rope control system 9, and meanwhile, the root air bag is inflated through the inflation and deflation system 10, so that the first air bag at the root part is gradually unfolded. When proper pressure is built for the first sub-air bag, the sub-air bag is in a balanced state under the action of axial force generated by internal pressure, pull force generated by the steel cables on the two sides of the upper end of the supporting rib plate and the steel cable 8 at the lower end of the air bag reinforcing frame, and then a remote control valve between the first sub-air bag and the second sub-air bag is opened to inflate the second air bag, so that the expansion of the first two sections of sub-air bags is realized. The above operations are repeated, and the 12-node airbag is completely unfolded in sequence. When each sub-airbag is unfolded to a fixed position, the rope control system 9 fixes the 4 steel ropes, the inflation and deflation system 10 keeps the internal pressure value of the airbag 2 constant, and the unfolding of the recovery platform is finished.
When the unmanned aerial vehicle retrieves, require to fill the gassing system and keep working, each remote control valve is in the open mode, maintains each sub-gasbag internal pressure invariable, prevents that the gasbag from appearing because of the too big damage that appears of interior pressure. Besides, the ship attitude is required to be stable, and the centering performance of the unmanned aerial vehicle is good, so that the structure is prevented from being excessively twisted. The rest conditions are the same as the conventional runway landing conditions. In the unmanned aerial vehicle recovery process, the unmanned aerial vehicle to be recovered contacts the flexible woven belt 3 of the recovery platform at a certain horizontal and vertical speed. It should be noted that the high pressure environment is established in the air bag 2, which causes a pretension stress in both the support rib upper end wire rope 7 and the air bag reinforcing frame lower end wire rope 8. Thus, the flexible webbing 3 wound around the wire rope 7 has sufficient rigidity to withstand the impact load applied by the drone. Then the braided belt 3 transfers the concentrated load at the tire to five steel cables 7 at the upper end of the support rib plate wound by the braided belt, then the five steel cables 7 at the upper end of the support rib plate transfer the load to the adjacent rib plate 6 and the air bag reinforcing frame 5, and finally the load is transferred to the fixed end structure 1 connected with the ship at the root part of the platform through the steel cables 7 at the upper end of the support rib plate, the steel cable 8 at the lower end of the air bag reinforcing frame and the air bag 2. Utilize self braking system to realize slowing down behind the unmanned aerial vehicle contact recovery platform, reach the naval vessel deck through apron 12 that is located deck edge at last, accomplish and retrieve the task.
And after the unmanned aerial vehicle is recovered, checking the completeness of each system, and recovering the platform. In the process of platform recovery, firstly, each remote control valve is closed, the internal pressure of each air bag is kept independent and unchanged, then, the rope control system 9 pulls the steel ropes on the two sides of the upper end of the support rib plate and the steel rope at the lower end of the air bag reinforcing frame, at this moment, the internal pressure of the first sub air bag is certainly increased, and then the inflation and deflation system 10 automatically deflates the first sub air bag, so that the first sub air bag is recovered. After the first sub-air bag is recovered, a remote control valve between the first sub-air bag and the second sub-air bag is opened, and the second sub-air bag is subjected to steel cable pulling and air releasing operation, so that the second sub-air bag is recovered. The above operations were repeated to sequentially recover the 12-node airbags. The purpose of maintaining the constant internal pressure of the sub-air bags in the process of being pulled and folded by the steel cable is to maintain the supporting function of each sub-air bag and prevent the platform from collapsing. The sub-airbags are deflated in sequence to achieve that the platform is recycled along the axis direction, and each sub-airbag is sunken inwards in sequence, so that the airbag reinforcing frames are connected at the head, and are wrapped to protect the airbags. And finally, the recovered 12-section air bag is rotated to a position perpendicular to a rear deck through rotation of the fixed end 1, and finally the cover plate 12 is taken down to complete the complete recovery of the platform.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (9)
1. A carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising a fixed end structure, an air bag steel cable supporting structure, a flexible steel cable, an air bag, a flexible braided belt, a cover plate and a remote control valve; the fixed end structure is fixedly connected with the tail part of the ship and the air bag reinforcing frame on the first sub air bag; the air bag steel cable supporting structure is connected with the air bag and the flexible steel cable; the air bag consists of twelve sections of sub air bags which are connected end to end along the axial direction, remote control valves are arranged at all junctions, and an inflation and deflation system is arranged at the first sub air bag and is connected with the fixed end structure; the flexible braided belt is wound on the steel cable at the upper end of the platform.
2. The shipboard inflation recovery platform of claim 1, wherein the fixed end structure is a hinge structure, and when the platform is in a working state, the fixed end structure is in a locked state; when the platform is completely recovered or is unfolded, the platform can be in a rotatable state, so that the platform can be folded and vertically placed at the tail of a ship when in a non-working state.
3. The shipborne inflatable recovery platform of the fixed-wing unmanned aerial vehicle as claimed in claim 1, wherein the airbag steel cable supporting structure comprises an airbag reinforcing frame and supporting rib plates, wherein the shape of the airbag reinforcing frame is the same as that of the section of the airbag, and the airbag reinforcing frame is attached to the surface of the airbag and fixedly connected with the airbag; each supporting rib plate is a rectangular metal plate, through holes allowing steel cables on two sides of the upper end of the supporting rib plate to pass through are formed in the upper position of each supporting rib plate, and the supporting rib plates are fixedly connected with the air bag reinforcing frame, so that loads borne by the steel cables on the upper end of the supporting rib plate are transmitted to the air bag, and the distance between the steel cables on the upper end of the supporting rib plate is kept unchanged.
4. The shipboard inflation recovery platform of claim 3, wherein a limiting hole is formed in the bottom end of the airbag reinforcing frame to prevent a steel cable at the lower end of the airbag reinforcing frame from slipping during the operation of the platform.
5. The shipborne inflatable recycling platform of the fixed-wing unmanned aerial vehicle as claimed in claim 1, wherein the flexible cables comprise five cables at the upper ends of the support ribs and two cables at the lower ends of the airbag reinforcing frames, the middle three of the five cables at the upper ends of the support ribs are fixedly connected with each support rib, and the cables at two sides pass through the through holes on each support rib; at the first sub-air bag, the steel cables on the two sides of the upper end of the support rib plate and the lower end of the air bag reinforcing frame are connected with a rope control system; at the position of the peripheral air bag, the steel cable at the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame are fixed on the peripheral rib plate, so that a form of winding the flexible steel cable along the axial direction of the air bag in the circumferential direction is formed.
6. The shipboard inflation recovery platform of claim 1, wherein the cross-sectional shape of each sub-airbag is two intersecting outer contour portions passing through a center of a circle, and the junctions of the sub-airbags are located at the airbag reinforcing frames.
7. The shipboard inflation recovery platform of claim 6, wherein the sub-airbag material is a nylon-rubber composite material.
8. A method for unfolding a carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising the following steps: the locking mechanism of the fixed end structure is released, the state that the platform is attached to the ship body from the vertical rear deck is changed into the state parallel to the rear deck, the fixed end structure is adjusted to be locked, all the remote control valves are kept in the closed state, then the steel cables on the two sides of the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame are pulled through the rope control system, and meanwhile, the root air bag is inflated through the inflation and deflation system, so that the first air bag at the root part is gradually unfolded; when proper pressure is built for the first sub-airbag, the sub-airbag is in a balanced state under the action of axial force generated by internal pressure, tensile force generated by steel cables on two sides of the upper end of the support rib plate and the steel cable at the lower end of the airbag reinforcing frame, and then a remote control valve between the first sub-airbag and the second sub-airbag is opened to inflate the second airbag, so that the expansion of the front two sections of sub-airbags is realized; repeating the above operations, and completely deploying the 12-section airbag in sequence; when each sub-airbag is unfolded to a fixed position, the rope control system fixes the 4 steel ropes, and the inflation and deflation system keeps the pressure value in the airbag constant.
9. A recovery method of a carrier-borne inflatable recovery platform of a fixed-wing unmanned aerial vehicle is characterized by comprising the following steps: firstly, closing each remote control valve, keeping the internal pressure of each air bag independent and unchanged, then pulling the steel cables on the two sides of the upper end of the support rib plate and the steel cable at the lower end of the air bag reinforcing frame through the rope control system, wherein the internal pressure of the first sub air bag is inevitably increased at the moment, and then automatically deflating the first sub air bag through the inflation and deflation system, so that the first sub air bag is recycled; after the first sub-air bag is completely recovered, opening a remote control valve between the first sub-air bag and the second sub-air bag, and carrying out steel cable pulling and air releasing operation on the second sub-air bag to realize the recovery of the second sub-air bag; repeating the above operations, and sequentially recovering 12 sections of air bags;
finally, the recovered 12-section air bag is rotated to be vertical to the rear deck through the rotation of the fixed end structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116374251A (en) * | 2023-04-28 | 2023-07-04 | 中国气象局广州热带海洋气象研究所（广东省气象科学研究所） | Marine unmanned aerial vehicle trouble recovery platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116374251A (en) * | 2023-04-28 | 2023-07-04 | 中国气象局广州热带海洋气象研究所（广东省气象科学研究所） | Marine unmanned aerial vehicle trouble recovery platform |
| CN116374251B (en) * | 2023-04-28 | 2024-02-02 | 中国气象局广州热带海洋气象研究所（广东省气象科学研究所） | Marine unmanned aerial vehicle trouble recovery platform |
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