A windbreak system for an eVTOL airfield

Abstract

This invention discloses a windbreak system for the takeoff and landing field of electric vertical takeoff and landing (EVTOL) aircraft, comprising several windbreak nets, several lifting devices, and a control device. Several windbreak nets are arranged around the perimeter of the takeoff and landing field. Lifting devices are connected to both sides of each windbreak net, and these devices cooperate to raise and lower the nets. The control device is signal-connected to the lifting devices to control the raising or lowering of one, multiple, or all windbreak nets at a time. This windbreak system allows for the selective raising of windbreak nets on one or adjacent sides based on wind direction during EVTOL takeoff and landing, thereby reducing the impact of crosswinds and gusts on the takeoff, landing, and hovering phases of the EVTOL aircraft. Furthermore, it allows for the raising of the surrounding windbreak nets during parking, mooring, or support operations, forming a circumferential wind barrier and providing dual protection for takeoff and landing and parking.

Description

Technical Field

[0001] This invention belongs to the technical field of low-altitude aircraft take-off and landing support and site supporting infrastructure, and in particular relates to a windbreak wall system for electric vertical take-off and landing (EVTOL) aircraft take-off and landing sites. It belongs to the technical field of wind environment control, parking and mooring protection and intelligent lifting control devices for EVTOL aircraft take-off and landing sites, and can be applied to low-altitude take-off and landing scenarios that are significantly affected by strong winds, such as islands, ports, engineering islands, offshore platforms, industrial parks and emergency support points. Background Technology

[0002] With the development of my country's low-altitude economy and electric vertical take-off and landing (eVTOL) aircraft, the construction of vertical take-off and landing sites not only needs to meet basic take-off and landing functions, but also needs to pay attention to the impact of wind environment on take-off and landing safety and parking support. Although the application scenarios of the low-altitude economy are developing in a diversified manner, coastal and island areas have taken the lead in forming real needs in cross-sea transportation, inter-island resupply, marine monitoring and emergency rescue, and have obvious application needs for wind protection facilities for the take-off and landing sites of eVTOL aircraft.

[0003] Existing electric vertical takeoff and landing (EVTOL) aircraft landing pads typically employ open site layouts, with supporting facilities primarily focused on basic takeoff, landing, parking, and mooring functions, lacking dedicated windproof structures for complex wind environments. For example, patent CN204024172U discloses a helicopter landing pad with a tethering device, proposing only a tethering ring-tethering point-tethering rod mooring structure facing the helicopter landing pad, focusing primarily on mechanical fixation after landing. In contrast, EVTOL aircraft commonly employ compound wing / winged designs. If solely secured by mooring, long-term use would damage the EVTOL aircraft's structure, and exposed components such as wings and tail fins during parking also make wind load issues more significant. Therefore, current research primarily addresses the "mooring" problem.

[0004] However, in coastal and island areas, strong sea breezes, frequent gusts, and high openness of the terrain make electric vertical takeoff and landing (EVTOL) aircraft susceptible to crosswind interference during takeoff and landing. During parking, strong winds can also affect aircraft stability and mooring safety. Existing wind protection measures are mostly fixed enclosures, hangars, or simple mooring devices, which are insufficient to simultaneously reduce crosswinds during takeoff and landing and provide circumferential protection during parking. Furthermore, these measures lack adaptability and adjustment capabilities, making it difficult to meet the operational support needs of EVTOL aircraft in current low-altitude economic applications, particularly in coastal and island settings. Summary of the Invention

[0005] To address the above problems, the present invention provides a windbreak system for the take-off and landing field of electric vertical take-off and landing aircraft.

[0006] The technical solution of this invention is as follows: A windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft, comprising: Several windbreak nets were arranged around the take-off and landing area; Several lifting devices are provided, with each side of the windproof net connected to a lifting device. The lifting devices connected to both sides of the windproof net cooperate with each other to realize the raising and lowering of the windproof net. A control device is signal-connected to the lifting device to control the opening or closing of one or more or all of the windbreak nets at a time.

[0007] In a preferred embodiment of the windbreak system for the take-off and landing field of an electric vertical take-off and landing aircraft, the lifting device includes a telescopic column, the tops of both sides of the windbreak net are respectively connected to the tops of the corresponding telescopic column, and the bottoms of both sides of the windbreak net are respectively fixed in relative position to the bottoms of the corresponding telescopic column.

[0008] In a preferred embodiment of the windbreak wall system for the take-off and landing field of an electric vertical take-off and landing aircraft, adjacent windbreak nets on their closest sides share a telescopic column, and the top of the shared telescopic column is detachably connected to the top of the windbreak net.

[0009] In a preferred embodiment of the windbreak wall system for an electric vertical takeoff and landing (EVTOL) aircraft takeoff and landing field, the top of the telescopic column and the top of the windbreak net are detachably connected via a detachable structure, the detachable structure comprising: Hanging holes are provided on the windproof net or on a component connected to the top of the windproof net; A locking ring is movably connected to the top of the telescopic column; the locking ring has an opening, and the locking ring passes through the hook hole through the opening; A drive unit is installed on the top of the telescopic column. The drive unit is connected to the locking ring and is used to drive the locking ring to move relative to the telescopic column so that the opening is located inside or outside the telescopic column. The control device is signal-connected to the drive unit.

[0010] In a preferred embodiment of the windbreak system for the take-off and landing field of an electric vertical take-off and landing aircraft, the movable connection between the locking ring and the telescopic column is such that the locking ring and the telescopic column are rotatably connected, and the axis of rotation is the axis of the locking ring.

[0011] In a preferred embodiment of the windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft, the drive unit includes: A rack is installed inside the telescopic column; the locking ring has a plurality of teeth arranged circumferentially along the axis of the locking ring, and the teeth on the locking ring mesh with the rack; A driver is installed inside the telescopic column. The output end of the driver is connected to the rack and pinion, and is used to drive the rack to move so as to drive the locking ring to rotate through the meshing of the rack with the teeth of the locking ring.

[0012] In a preferred embodiment of the windbreak wall system for the take-off and landing field of an electric vertical take-off and landing aircraft, the four edges of the windbreak net include a top edge, a bottom edge, a left edge, and a right edge; The windbreak net has several fixed slots on its top edge, left edge and right edge; the traction rope passes through the fixed slots on the top edge, left edge and right edge of the windbreak net, and the two ends of the traction rope are fixed to the bottom of the telescopic posts on both sides of the windbreak net. The portion of the traction rope located on both sides of the top of the windbreak net is respectively provided with a pull rope hook. The pull rope hook is located between the two fixed clips along the extension direction of the traction rope. The pull rope hook is used to connect to the top of the telescopic column.

[0013] A preferred embodiment of the windbreak system for the take-off and landing field of an electric vertical take-off and landing aircraft also includes a storage box for storing the windbreak net when it is being pulled up.

[0014] In a preferred embodiment of the windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft, the storage box includes: The chamber is recessed below the ground of the take-off and landing area, and the chamber has an opening on the ground. When the telescopic column and the windproof net are in the retracted state, they are housed in the chamber. When the telescopic column and the windproof net are in the extended state, they extend out of the chamber from the opening. A cover plate, movably connected to the chamber, is used to close the opening and open the opening when moving relative to the ground.

[0015] In a preferred embodiment of the windbreak system for the take-off and landing field of an electric vertical take-off and landing aircraft, a wind speed and direction detection device is also provided, which is signal-connected to the control device.

[0016] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: The windbreak system for takeoff and landing fields of electric vertical takeoff and landing (EVTOL) aircraft provided by this invention allows the control device to open the windbreak nets on the windward side or adjacent sides only, based on the real-time wind direction, while keeping the nets on the other sides closed. This reduces the impact of crosswinds without affecting the main approach and departure directions. When the EVTOL aircraft is parked, charging, undergoing maintenance, or moored, the control device can open all the windbreak nets around the takeoff and landing field to form a circumferential windbreak barrier (or only open part of the windbreak nets to form a single-sided or double-sided windbreak barrier), thereby reducing the impact of continuous wind loads on the airframe structure, landing gear, and wing surface connections. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

[0018] Figure 1 This is a top view schematic diagram of a windbreak wall system for the take-off and landing field of an electric vertical take-off and landing aircraft according to the present invention. Figure 2 This is a schematic diagram of the windbreak net and telescopic column on one side of the take-off and landing field of the present invention (windbreak net in the extended state). Figure 3 This is a schematic diagram of the windbreak net and telescopic column on one side of the take-off and landing field of the present invention (windbreak net in the retracted state). Figure 4 This is a schematic diagram of a detachable structure of the present invention (the mounting hole is not shown); Figure 5a , Figure 5b , Figure 5c This is a schematic diagram of a connection structure according to the present invention.

[0019] Explanation of reference numerals in the attached figures: 1: Telescopic column; 2: Windproof net; 3: Towing rope; 4: Fixing clamp; 5: Pull rope hook; 6: Chamber; 7: Cover plate; 8: Electric telescopic device; 9: Rack and pinion; 10: Locking ring. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0021] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0022] In the description of this invention, the term "a" not only means "only one" but can also mean "more than one". The terms "first", "second", "third", etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. The terms "perpendicular" and "parallel" do not mean absolutely perpendicular or parallel, but can be approximately perpendicular or approximately parallel.

[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] See Figures 1 to 4 This embodiment provides a windbreak system for the take-off and landing field of an electric vertical take-off and landing aircraft, including several windbreak nets 2, several lifting devices and control devices.

[0025] Several windbreak nets 2 are arranged around the perimeter of the takeoff and landing field. The takeoff and landing field is generally a rectangular area; this embodiment uses a rectangular takeoff and landing field as an example to illustrate the windbreak wall system used for the takeoff and landing field of electric vertical takeoff and landing aircraft. Figure 1 As shown, several windbreak nets 2 are set along the perimeter of the take-off and landing field, and each side of the take-off and landing field can contain one or more windbreak nets 2.

[0026] Lifting devices are connected to both sides of the windbreak net 2. These devices work together to raise and lower the net. The control device is signal-connected to the lifting devices to control the raising or lowering of one, multiple, or all windbreak nets 2 at a time; a single control refers to a single command. Therefore, the control device can independently or in conjunction with other windbreak nets 2.

[0027] The windbreak net 2 is preferably made of corrosion-resistant high-strength fiber mesh. Specifically, the windbreak net 2 can be made of polyester fiber-coated PVC material, marine-grade polymer flexible mesh material, or other weather-resistant, flame-retardant, and salt spray-resistant materials. The opening rate of the windbreak net 2 is preferably 30% to 70% (more preferably 50%), which can reduce the lateral wind speed and reduce the local eddies formed by the rigid enclosure.

[0028] The lifting device includes a telescopic column 1, the bottom of which can be fixed below the ground. The tops of both sides of the windbreak net 2 are connected to the tops of the corresponding telescopic columns 1, and the bottoms of both sides of the windbreak net 2 are fixed relative to the bottoms of the corresponding telescopic columns 1. Adjacent windbreak nets 2 on adjacent sides can share a single telescopic column 1. The connection between the top of the shared telescopic column 1 and the top of the windbreak net 2 is detachable. Thus, when only one side of the windbreak net 2 is raised, only the connection between the lifting column and the other side of the windbreak net 2 needs to be detached. The detachable structure for this detachable connection includes a hook hole, a locking ring 10, and a drive unit.

[0029] Hanging holes are provided on the windbreak net 2 or on the components connected to the top of the windbreak net 2. Specifically, the windbreak net 2 is rectangular, with its four edges including a top edge, bottom edge, left edge, and right edge. Several fixing slots 4 are provided on the top edge, left edge, and right edge of the windbreak net 2. The fixing slots 4 can be holes directly formed in the windbreak net 2; or they can be, for example... Figure 5a , Figure 5b and Figure 5c The connection structure shown in the diagram involves a U-shaped component passing through holes on the edge of the windbreak net 2, followed by the installation of bolts and nuts. The hole formed inside the U-shaped component where it mates with the bolt serves as the fixing slot 4. Alternatively, other forms may be used, and the structure and shape of the fixing slot 4 are not limited. The traction rope 3 passes sequentially through the fixing slots 4 on the top, left, and right edges of the windbreak net 2 along its four sides. Both ends of the traction rope 3 are fixed to the bottom of the telescopic posts 1 on both sides of the windbreak net 2. The portions of the traction rope 3 located on both sides of the top of the windbreak net 2 are respectively equipped with pull rope hooks 5. The pull rope hooks 5 are positioned between the two fixing slots 4 along the extension direction of the traction rope 3 and are used to connect to the top of the telescopic posts 1. The pull rope hooks 5 have holes, which are the hooking holes. When the traction rope 3 extends downwards and separates from the windbreak net 2, it can be fixed to the bottom of the windbreak net 2 by means of tying ropes or other methods. Thus, the top and bottom sides of the windbreak net 2 are connected to the telescopic posts 1 on both sides by the traction ropes 3 respectively. When the telescopic posts 1 are raised, the top of the telescopic posts 1 rises relative to the bottom, thereby moving the top of the windbreak net 2 away from the bottom and realizing the net-setting action; when the telescopic posts 1 are retracted, the top of the telescopic posts 1 falls, thereby moving the top of the windbreak net 2 closer to the bottom and realizing the net-closing action.

[0030] The locking ring 10 is movably connected to the top of the telescopic column 1. The locking ring 10 has an opening through which it passes a hook hole. A drive unit is mounted on the top of the telescopic column 1 and connected to the locking ring 10. The drive unit drives the locking ring 10 to move relative to the telescopic column 1 so that the opening is located inside or outside the telescopic column 1. A control device is signal-connected to the drive unit. When the opening on the locking ring 10 is outside the telescopic column 1, the hook hole can be hooked onto the locking ring 10 through the opening or removed from the locking ring 10 through the opening. If the hook hole is hooked onto the locking ring 10 and the opening on the locking ring 10 is inside the telescopic column 1, the hook hole cannot be separated from the locking ring 10, thus achieving a locking connection.

[0031] Specifically, in this embodiment, the movable connection between the locking ring 10 and the telescopic column 1 is a rotatable connection between the locking ring 10 and the telescopic column 1, and the axis of rotation is the axis of the locking ring 10. Thus, when the locking ring 10 rotates to the point where the opening is at the bottom and outside the telescopic column 1, the hook hole can automatically separate from the locking ring 10 from the opening under the gravity of the windproof net 2. Further preferably, as... Figure 4 As shown, an arc-shaped track can be installed on the telescopic column 1, and part of the locking ring 10 is slidably connected in the arc-shaped track.

[0032] The drive unit includes a rack 9 and a driver. The rack 9 is installed inside the telescopic column 1; the locking ring 10 has a plurality of teeth arranged circumferentially along the axis of the locking ring 10, and the teeth on the locking ring 10 mesh with the rack 9. The driver is installed inside the telescopic column 1, and the output end of the driver is connected to the rack 9, for driving the rack 9 to move so as to drive the locking ring 10 to rotate through the meshing of the rack 9 with the teeth of the locking ring 10.

[0033] Further preferred, such as Figure 4 As shown, the teeth on the locking ring 10 can be set on the outside of the locking ring 10 to form an arc-shaped tooth segment; the driver can be an electric telescopic device 8, the top of the telescopic rod of the electric telescopic device 8 is fixedly connected to the bottom of the rack 9, and the driver is connected to the control device by signal; the angle corresponding to the opening on the locking ring 10 needs to be able to meet the hooking and unhooking of the pull rope hook 5, and the angle corresponding to the opening on the locking ring 10 is preferably 30°~90°; the traction rope 3 can be made of aramid rope, UHMWPE rope or stainless steel core composite rope, etc.

[0034] When the windbreak net 2 is in the retracted state, the pull rope hook 5 at its upper end can remain connected to the locking ring 10 (or it can remain disconnected; however, in this case, when the windbreak net 2 needs to be extended, the pull rope hook 5 must first be hooked onto the locking ring 10); when the windbreak net 2 is in the extended state, the pull rope hook 5 remains connected to the locking ring 10; during the extension and retraction of the net, the pull rope hook 5 on the windbreak net 2 remains connected to the locking ring 10; when the windbreak net 2 on one side of the telescopic post 1 needs to be extended while the other side does not, the pull rope hook 5 on the windbreak net 2 that does not need to be extended must first be separated from the locking ring 10 on the telescopic post 1, and the pull rope hook 5 on the windbreak net 2 that needs to be extended must remain connected to the locking ring 10 on the telescopic post 1, and then the telescopic post 1 can be raised. For ease of operation, after each descent and retraction of the telescopic column 1, the two locking rings 10 on it are kept connected to the pull rope hooks 5 on the windbreak nets 2 on both sides (that is, after the pull rope hooks are threaded onto the locking rings 10, the openings on the locking rings 10 are driven into the telescopic column 1). When wind protection is required, if the telescopic column 1 needs to be raised and only one side of the windbreak net 2 needs to be stretched, the locking rings 10 on the side of the windbreak net 2 that does not need to be stretched are first driven, so that the pull rope hooks 5 on that side of the windbreak net 2 automatically separate from the locking rings 10 under the gravity of the windbreak net 2, and then the telescopic column 1 is raised. If the telescopic column 1 needs to be raised and both sides of the windbreak net 2 need to be stretched, the telescopic column 1 is raised directly. After completing one wind protection action, the disconnected pull rope hooks 5 and locking rings 10 are manually reconnected.

[0035] Preferably, for scenarios such as islands, the height of the windbreak net 2 when fully extended is 1.5 to 3 meters, and the distance between two adjacent telescopic columns 1 can be designed according to the site size of the take-off and landing field and the size of the windbreak net 2.

[0036] The control device can independently control the raising and lowering of each telescopic column 1, and can independently control the opening and closing of the electric telescopic device 8 on each telescopic column 1.

[0037] The windbreak wall system for the takeoff and landing field of electric vertical takeoff and landing aircraft further includes a storage box for storing the windbreak net 2 when it is retracted. Specifically, the storage box includes a chamber 6 and a cover plate 7. The chamber 6 is formed by a depression in the ground of the takeoff and landing field, and the chamber 6 has an opening in the ground. When the telescopic column 1 and the windbreak net 2 are in the retracted state, they are housed in the chamber 6. When the telescopic column 1 and the windbreak net 2 are extended from the opening of the chamber 6, the telescopic column 1 and the windbreak net 2 extend out of the opening of the chamber 6. The cover plate 7 is movably connected to the chamber 6. The cover plate 7 is used to close the opening and open the opening when moving relative to the ground. Preferably, when the cover plate 7 is closed at the opening of the chamber 6 to close the chamber 6 (preferably to achieve a seal when closed to reduce the impact of sea breeze, rain, sand and dust on the windbreak net 2 inside the chamber 6), the upper surface of the cover plate 7 can form a flat passage surface with the surface of the landing pad of the takeoff and landing field, ensuring smooth passage between the landing pad and the outside world. The cover plate 7 can be made of galvanized steel sheet, aluminum alloy or composite material, with an anti-corrosion coating on the outer surface to adapt to coastal, island and high salt spray environments.

[0038] Furthermore, the movable connection between the cover plate 7 and the chamber 6 can be configured to be electrically driven. For example, the cover plate 7 can be rotatably connected to the chamber 6, and a driver can be provided to drive the rotation of the cover plate 7. This driver is signal-connected to a control device, thereby enabling the opening and closing of the cover plate 7 to be controlled by the control device, achieving automation. Of course, in other embodiments, the cover plate 7 can also be connected to the chamber 6 through other movable connection methods, and the opening and closing of the cover plate 7 over the opening of the chamber 6 can also be done manually.

[0039] Furthermore, the windbreak system for the take-off and landing field of electric vertical take-off and landing aircraft may also include a wind speed and direction detection device, which is signal-connected to the control device. When the control device receives the take-off and landing command of the electric vertical take-off and landing aircraft and the wind speed detected by the wind speed and direction detection device is greater than the threshold, the control device automatically controls the telescopic column 1 and the electric telescopic device 8 to raise the windbreak net 2 on one side or adjacent sides according to the wind direction.

[0040] The windbreak wall system for the take-off and landing field of electric vertical take-off and landing aircraft in this embodiment can selectively raise one side or adjacent sides of the windbreak net 2 according to the wind direction during the take-off and landing of the electric vertical take-off and landing aircraft, thereby reducing the impact of crosswinds and gusts on the take-off, landing and hovering phases of the electric vertical take-off and landing aircraft; and can raise the surrounding windbreak net 2 during the parking, mooring or support operations of the electric vertical take-off and landing aircraft to form a circumferential wind barrier, playing a dual role of wind reduction during take-off and landing and parking protection, thereby improving the local wind environment of the take-off and landing field, improving the operational safety of electric vertical take-off and landing aircraft, parking stability and site support capabilities.

[0041] When the windbreak net 2 needs to be put into operation, it is necessary to first ensure that the pull rope hook 5 on the windbreak net 2 is connected to the locking ring 10 on the corresponding telescopic column 1 and that the cover plate 7 is in the open state. Then, the control device issues a command to control the telescopic column 1 to extend upward into the chamber 6. The upper end of the windbreak net 2 rises synchronously under the drive of the traction rope 3 and its pull rope hook 5. The windbreak net 2 is pulled out from the chamber 6 and gradually unfolds between the two telescopic columns 1. After the telescopic column 1 rises to the set height, the windbreak net 2 forms a stable tensioned state. Preferably, the lifting speed of the telescopic column 1 can be set to 0.05m / s to 0.20m / s, taking into account both response speed and structural stability.

[0042] When the windproof net 2 needs to be taken down to finish its windproof work, the control device issues a recovery command, the telescopic column 1 falls downward, and the windproof net 2 descends synchronously and is recovered into the chamber 6 under the traction of gravity and the pull rope hook 5 and the traction rope 3. Then the cover plate 7 is driven to the closed state to seal the chamber 6 and prevent foreign objects from entering.

[0043] When the windbreak net 2 does not need to work but its corresponding telescopic column 1 needs to be raised (the corresponding situation is that the windbreak net 2 on one side of the telescopic column 1 needs to perform wind protection work while the windbreak net 2 on the other side does not need to perform wind protection work), before the telescopic column 1 is raised, the control device can control the locking ring 10 to rotate so that its opening is at the bottom and outside the telescopic column 1, so that the pull rope hook 5 on the windbreak net 2 leaves the locking ring 10 from the opening of the locking ring 10 under the action of gravity, thereby realizing the separation of the windbreak net 2 from the telescopic column 1.

[0044] When the electric vertical take-off and landing aircraft is in take-off and landing operation mode: For large electric vertical take-off and landing aircraft take-off, landing or hovering operations, the control device can control only the windproof net 2 on the windward side or adjacent sides according to the real-time wind direction, while the remaining windproof net 2 remains in the closed state, thereby reducing the crosswind impact without affecting the main approach and departure directions, and taking into account the crosswind intervention effect and the openness of the take-off and landing field.

[0045] When the electric vertical takeoff and landing aircraft is in parking protection mode: When the electric vertical takeoff and landing aircraft is in parking, charging and swapping, maintenance or mooring state, the control device can control the multi-side windproof net 2 or the four-side windproof net 2 to be set up at the same time to form a circumferential windproof barrier, so as to reduce the impact of continuous wind load on the airframe structure, landing gear and wing surface connection parts.

[0046] The windbreak wall system for the take-off and landing field of electric vertical take-off and landing aircraft in this embodiment has the following beneficial technical effects: ① Compared to simple mooring, this is more suitable for electric vertical takeoff and landing (EVTOL) aircraft. Existing helicopter mooring solutions mainly rely on tethering points, tethering bars, or mooring ropes to mechanically fix the aircraft, which can only restrict positional movement and is difficult to reduce wind load itself. EVTOL aircraft typically have exposed configurations such as wings, tail fins, or composite wings, resulting in a larger overall wind-receiving area. If relying solely on mooring, the fuselage connection parts, landing gear, wing structure, and mooring stress points are prone to greater additional loads and fatigue in the long run, leading to structural damage, shortened lifespan, and decreased reliability. Therefore, reducing wind level from the perspective of the entire flight field is more important. This embodiment uses independent control of each windproof net 2, allowing selective deployment of the corresponding side windproof net 2 according to wind direction, adjusting the local wind environment around the takeoff and landing area, and reducing crosswind and gust interference during takeoff, landing, hovering, and low-speed transition phases.

[0047] ② Balancing both takeoff and landing and parking conditions. Existing takeoff and landing site protection measures mainly focus on wind speed and direction monitoring, mooring and securing, and storage of aircraft, lacking dedicated facilities that can simultaneously provide crosswind protection during takeoff and landing and circumferential wind protection during parking. In this embodiment, windproof netting 2 can be deployed on one side or adjacent sides during takeoff and landing of the electric vertical takeoff and landing aircraft, and multiple sides or four sides of windproof netting 2 can be deployed during parking, thereby meeting the wind protection needs of the electric vertical takeoff and landing aircraft in different operating stages.

[0048] ③ The system boasts a high degree of automation, reducing manual operation. When the windbreak net 2 is being stretched, it is directly lifted and unfolded by the telescopic post 1. During net retrieval, it descends synchronously with the telescopic post 1 and enters the storage box. When the windbreak net 2 is unfolded on one side of the telescopic post 1 while the other side remains closed, rotating the locking ring 10 on the closed side allows the pull rope hook 5 to automatically separate from the locking ring 10 under gravity. Therefore, this improves the efficiency of unfolding and retrieval.

[0049] ④ Lightweight structure and convenient modification. This embodiment adopts a flexible mesh structure and a retractable design. Compared with fixed windbreak walls or enclosed hangars, it is lighter in overall weight, requires less basic modification, and has less impact on the central area of ​​the takeoff and landing field. It is suitable for retrofitting existing open aprons, elevated platforms, and island scenarios. Windproof net 2 can be deployed as needed, making operation more economical. This embodiment can select to deploy on one side, both sides, or multiple sides according to wind direction, wind speed, and the status of the electric vertical takeoff and landing aircraft, avoiding ineffective deployment caused by simultaneous operation of the windproof net 2 around the entire circumference. This helps to reduce the load on the actuators, energy consumption, and maintenance costs.

[0050] ⑤ Applicable to high-wind environments in coastal and island areas, making it more universally applicable. This embodiment can reduce crosswind interference during takeoff and landing, and provide circumferential protection during parking, which is beneficial to improving the operational safety, parking stability, and site support capabilities of electric vertical takeoff and landing aircraft in complex wind environments such as coastal areas, islands, and offshore platforms.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft, characterized in that, include: Several windbreak nets were arranged around the take-off and landing area; Several lifting devices are provided, with each side of the windproof net connected to a lifting device. The lifting devices connected to both sides of the windproof net cooperate with each other to realize the raising and lowering of the windproof net. A control device is signal-connected to the lifting device to control the opening or closing of one or more or all of the windbreak nets at a time.

2. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The lifting device includes telescopic columns, the tops of both sides of the windproof net are respectively connected to the tops of the corresponding telescopic columns, and the bottoms of both sides of the windproof net are respectively fixed in relative position to the bottoms of the corresponding telescopic columns.

3. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 2, characterized in that, The adjacent sides of the windbreak nets share a telescopic post, and the top of the shared telescopic post is detachably connected to the top of the windbreak net.

4. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 3, characterized in that, The top of the telescopic column and the top of the windbreak net are detachably connected via a detachable structure, which includes: Hanging holes are provided on the windproof net or on a component connected to the top of the windproof net; A locking ring is movably connected to the top of the telescopic column; the locking ring has an opening, and the locking ring passes through the hook hole through the opening; A drive unit is installed on the top of the telescopic column. The drive unit is connected to the locking ring and is used to drive the locking ring to move relative to the telescopic column so that the opening is located inside or outside the telescopic column. The control device is signal-connected to the drive unit.

5. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 4, characterized in that, The movable connection between the locking ring and the telescopic column is such that the locking ring and the telescopic column are rotatably connected, and the axis of rotation is the axis of the locking ring.

6. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 5, characterized in that, The drive unit includes: A rack is installed inside the telescopic column; the locking ring has a plurality of teeth arranged circumferentially along the axis of the locking ring, and the teeth on the locking ring mesh with the rack; A driver is installed inside the telescopic column. The output end of the driver is connected to the rack and pinion, and is used to drive the rack to move so as to drive the locking ring to rotate through the meshing of the rack with the teeth of the locking ring.

7. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 2 or 4, characterized in that, The windbreak net has four edges, including a top edge, a bottom edge, a left edge, and a right edge. The windbreak net has several fixed slots on its top edge, left edge and right edge; the traction rope passes through the fixed slots on the top edge, left edge and right edge of the windbreak net, and the two ends of the traction rope are fixed to the bottom of the telescopic posts on both sides of the windbreak net. The portion of the traction rope located on both sides of the top of the windbreak net is respectively provided with a pull rope hook. The pull rope hook is located between the two fixed clips along the extension direction of the traction rope. The pull rope hook is used to connect to the top of the telescopic column.

8. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 2, characterized in that, It also includes a storage box, which is used to store the windproof net when it is being collected.

9. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 8, characterized in that, The storage box includes: The chamber is recessed below the ground of the take-off and landing area, and the chamber has an opening on the ground. When the telescopic column and the windproof net are in the retracted state, they are housed in the chamber. When the telescopic column and the windproof net are in the extended state, they extend out of the chamber from the opening. A cover plate, movably connected to the chamber, is used to close the opening and open the opening when moving relative to the ground.

10. The windbreak system for the takeoff and landing field of an electric vertical takeoff and landing aircraft according to claim 1, characterized in that, It also includes a wind speed and direction detection device, which is signal-connected to the control device.

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