A two-compartment structure airship

Abstract

The application relates to the technical field of aerostats, and discloses a double-cabin structure aerostat. The aerostat comprises a buoyancy cabin, a pressure cabin and a connecting structure, the buoyancy cabin and the pressure cabin are independent of each other and do not share a wall surface, and the two are connected into a whole through the connecting structure. The buoyancy cabin is used for containing lifting gas, the capsule body of the buoyancy cabin comprises a gas-blocking layer, the gas-blocking layer adopts an EVOH composite film; the pressure cabin is used for containing air, in some embodiments, the pressure cabin is a pressure-resistant capsule structure, the capsule body of the pressure cabin comprises a force-bearing layer, and the force-bearing layer adopts a UHMWPE fabric; in other embodiments, the pressure cabin is a high-pressure gas cylinder. By filling air into the pressure cabin or discharging air from the pressure cabin, the air mass in the pressure cabin is changed, the overall average density of the aerostat is adjusted, and the lifting control of the aerostat is realized. The structure can improve the pressure-bearing capacity of the pressure cabin while guaranteeing the air-tightness of the buoyancy cabin, and has the advantages of simple structure, high adjustment efficiency and low cost.

Description

Technical Field

[0001] This invention relates to the field of airship technology, and more particularly to a dual-chamber airship. Background Technology

[0002] Aerostats are a type of flying device that relies on buoyancy to achieve takeoff, hovering, and movement. They are widely used in fields such as communication relay, environmental monitoring, surveying and mapping, and emergency rescue. Depending on their structural form and control method, existing aerostats typically employ a single-bag structure or a multi-bag combination structure, and achieve ascent and descent control by adjusting the buoyancy gas or ballast gas.

[0003] In the prior art, one type of airship employs a single-bladder structure, integrating the buoyancy gas containment function and pressure regulation function into the same bladder. For example, patent CN201610839446.2 discloses a bladder structure for an airship, which achieves buoyancy and pressure regulation functions within the same bladder. This type of structure requires simultaneously ensuring airtightness and pressure resistance within the same bladder material, resulting in complex bladder structure design, limited material selection, and typically low pressure resistance, with a maximum gauge pressure of approximately 2 kPa.

[0004] Another type of technology achieves the adjustment function by setting a main airbag and a secondary airbag inside the same bladder. For example, patent CN201810717255.8 achieves buoyancy adjustment by filling the secondary airbag with high-temperature gas, but the main airbag and the secondary airbag are still set in the same bladder, which has the problem of pressure coupling, and its maximum gauge pressure generally does not exceed 2.5 kPa.

[0005] Some foreign technical solutions achieve gas separation by setting up multi-compartment or diaphragm structures. For example, patent US10988227B2 separates the helium chamber from the air ballast chamber using a diaphragm, and uses ballast air to adjust buoyancy; patents US20210309338A1 and US20230051600A1 propose multi-compartment or multi-airbag combination structures, achieving lifting control through different gases or gas combinations. In the above solutions, the various compartments usually still have problems with structural coupling or integrated material design, and their pressure bearing capacity generally does not exceed 3.5 kPa.

[0006] In domestic related technologies, patent CN201810512426.3 proposes a method for coordinated control of buoyancy and pressure, which achieves lifting control by setting up buoyancy airbags and pressure-resistant regulating airbags. However, the airbag structure still has some shared features, and the pressure-resistant regulating airbag usually adopts a composite material structure that takes into account both air resistance and load-bearing capacity, resulting in complex manufacturing process and high cost.

[0007] Because the maximum gauge pressure of pressure chambers in existing technologies is generally low, typically between 2 kPa and 3.5 kPa, the buoyancy adjustment capability achievable per unit volume is limited based on the relationship between air density and pressure. For example, under atmospheric pressure of approximately 101 kPa and air density of approximately 1.2 kg / m³, when the maximum gauge pressure is 3.5 kPa, the maximum adjustable weight per cubic meter of air is approximately 0.04 kg. To meet the lifting and lowering adjustment requirements of approximately 4 kg to 10 kg in practical applications, a pressure chamber with a volume of approximately 100 m³ to 250 m³ is usually required, resulting in an increase in the overall volume and structural weight of the airship, and a significant increase in manufacturing and maintenance costs.

[0008] In addition, existing airship technologies generally suffer from the following problems: the coupling of the buoyancy chamber and the pressure chamber structure leads to complex bladder design and difficulty in balancing material properties; the limited pressure-bearing capacity results in low lifting and adjustment efficiency and a large required volume; the manufacturing and testing process is complex and costly; and the lifting control process usually requires the consumption or emission of boosting gas, increasing operating costs.

[0009] Therefore, there is an urgent need for an airship technology solution that is simple in structure, easy to manufacture, has higher pressure resistance, and has a more economical and efficient lifting control method to overcome the shortcomings of the existing technologies. Summary of the Invention

[0010] In view of this, the purpose of the present invention is to provide a dual-chamber airship to solve the technical problems of existing airships, such as the coupling of buoyancy chamber and pressure chamber structures, complex bladder design, high difficulty in manufacturing and testing, low pressure bearing capacity, and high cost of lifting and adjusting.

[0011] To achieve the above objectives, the present invention provides the following technical solution: In one embodiment of the present invention, a dual-chamber airship is provided, comprising a buoyancy chamber, a pressure chamber, and a connecting structure. The buoyancy chamber and the pressure chamber are each composed of independent capsules, without sharing a common capsule wall, and are connected as a whole by the connecting structure, which includes a rope connection structure, a rigid connection structure, or a combination thereof. The buoyancy chamber is filled with lifting gas, and its capsule is a deformable structure that changes volume with environmental changes when the internal and external pressure difference is close to zero. The capsule includes a gas barrier layer, which is an EVOH composite membrane. The pressure chamber is a pressure-resistant structure, filled with air, and has a vent interface for communication with the outside. The capsule of the pressure chamber includes a load-bearing layer, which is made of UHMWPE fabric. The pressure chamber can withstand a gauge pressure of not less than 5 kPa.

[0012] Furthermore, the EVOH composite membrane is an EVOH silage oxygen barrier membrane.

[0013] Preferably, the UHMWPE fabric is a woven fabric or a UHMWPE UD non-woven fabric.

[0014] Furthermore, the UHMWPE fabric has a TPU coating.

[0015] Alternatively, the UHMWPE fabric surface can also be coated with a PU coating to improve the waterproofness, airtightness, sealing connection adaptability and processing convenience of the pressure chamber material while ensuring pressure bearing performance.

[0016] Furthermore, a high-strength cable net is installed outside the pressure chamber.

[0017] Preferably, the high-strength cable net is made of UHMWPE yarn.

[0018] Alternatively, the buoyancy chamber and / or pressure chamber may each include one or more airbag units.

[0019] Preferably, the pressure chamber can withstand a gauge pressure of 10 kPa or more, and in some embodiments it can reach 12 kPa or 15 kPa.

[0020] In another embodiment of the present invention, a dual-chamber airship is also provided, including a buoyancy chamber, a high-pressure gas cylinder serving as a pressure chamber, and a connecting structure; the buoyancy chamber is used to fill with lifting gas, and its body includes an air-blocking layer, which is an EVOH composite membrane; the high-pressure gas cylinder is used to fill with air and is provided with a pressure chamber vent for filling or venting air; the buoyancy chamber and the high-pressure gas cylinder are independent of each other, do not share a common wall, and are connected as one unit by the connecting structure; by filling the high-pressure gas cylinder with air or venting the high-pressure gas cylinder, the air mass inside the high-pressure gas cylinder is changed, thereby adjusting the overall average density of the airship.

[0021] Furthermore, the high-pressure gas cylinder is selected from one of the following: an all-metal gas cylinder, a metal-lined circumferentially wound gas cylinder, a metal-lined fully wound gas cylinder, a non-metallic-lined fully wound gas cylinder, or a linerless all-composite gas cylinder.

[0022] Furthermore, the pressure chamber vent is either the cylinder valve port of the high-pressure gas cylinder or a pipeline interface connected to the cylinder valve port of the high-pressure gas cylinder.

[0023] In one embodiment of the present invention, a lifting control method based on the above-mentioned dual-chamber structure airship is also provided, comprising: when it is necessary to lower the airship, air is injected into the pressure chamber through the pressure chamber vent to increase the air mass in the pressure chamber, thereby increasing the overall average density of the airship and thus achieving descent; When the airship needs to ascend, the air inside the pressure chamber is discharged through the pressure chamber vent to reduce the air mass inside the pressure chamber, thereby reducing the overall average density of the airship and achieving ascent.

[0024] Furthermore, during the lifting control process, the lifting gas inside the buoyancy chamber is not routinely discharged through the buoyancy chamber vent.

[0025] In another embodiment of the present invention, when the pressure chamber is a high-pressure gas cylinder, the lifting control method includes: when the airship needs to descend, air is introduced into the high-pressure gas cylinder through the gas cylinder valve port or a pipeline interface connected to the gas cylinder valve port to increase the air mass inside the high-pressure gas cylinder, thereby increasing the overall average density of the airship and achieving descent; when the airship needs to ascend, air is discharged from the high-pressure gas cylinder through the gas cylinder valve port or a pipeline interface connected to the gas cylinder valve port to reduce the air mass inside the high-pressure gas cylinder, thereby reducing the overall average density of the airship and achieving ascent.

[0026] Based on the above technical solution, the dual-chamber airship of the present invention, by setting up a structure in which the buoyancy chamber and the pressure chamber are independent of each other and do not share a common shell wall, and by using an EVOH composite membrane for the buoyancy chamber to achieve high airtightness and a UHMWPE fabric for the pressure chamber to achieve high pressure resistance, and by connecting the two together through a connecting structure, and by using the filling or emptying of air in the pressure chamber to adjust its surface pressure, the overall average density of the airship can be adjusted, thereby solving the problems of structural coupling of buoyancy chamber and pressure chamber, difficulty in balancing the performance of shell materials, and low pressure resistance in existing airships.

[0027] Furthermore, when the pressure chamber uses high-pressure gas cylinders, the high-pressure gas cylinders, as independent ballast air containers, do not share walls with the buoyancy chamber. This allows for the decoupling of the functions of the buoyancy chamber and the pressure chamber, while utilizing a mature high-pressure container structure to achieve higher air storage pressure. This enables a larger air quality regulation range within a smaller volume, reducing the required volume of the pressure chamber, lowering the airship's motion resistance, and improving the structural reliability of the pressure chamber.

[0028] Furthermore, the high-pressure gas cylinder can adopt existing mature gas cylinder structures and gas cylinder valve components, which are convenient for manufacturing, installation and maintenance; by filling or venting gas through the gas cylinder valve or the pipeline interface connected to the gas cylinder valve, the air quality inside the high-pressure gas cylinder can be regulated, thereby realizing the ascent or descent control of the airship.

[0029] Furthermore, since the buoyancy chamber and the pressure chamber are each composed of independent bladders and there is no shared wall between them, the buoyancy function and the pressure regulation function are structurally decoupled. This avoids the design constraints of simultaneously meeting air resistance and load-bearing capacity in the same bladder, reduces the complexity of the bladder structure design, and facilitates the selection of the optimal material system, thereby improving the overall performance matching degree.

[0030] Furthermore, by setting the buoyancy chamber as a deformable structure, it can operate in a state where the internal and external pressure difference is close to zero. It can adaptively change its volume with changes in ambient temperature and air pressure, thereby reducing the requirements for structural strength, reducing the risk of gas leakage during lifting, and improving buoyancy maintenance capability and system stability.

[0031] Furthermore, by using an EVOH composite membrane as a gas barrier layer in the buoyancy chamber, the permeation rate of light gases can be effectively reduced, thereby extending the aerostat's dwell time, reducing the frequency of gas replenishment, and lowering operation and maintenance costs.

[0032] Furthermore, by designing the pressure chamber as a pressure-resistant structure and using UHMWPE fabric as the load-bearing layer, the pressure chamber has high tensile strength and pressure resistance, thus achieving a gauge pressure level of not less than 5 kPa or even more than 10 kPa, which significantly improves the pressure resistance compared to existing technologies.

[0033] Furthermore, by improving the pressure resistance of the pressure chamber, the required air volume can be significantly reduced under the same lifting and adjustment requirements, thereby reducing the size of the pressure chamber, reducing material usage and overall weight, and improving the compactness and energy efficiency of the airship structure.

[0034] Furthermore, by installing a high-strength cable net outside the pressure chamber, the internal pressure load borne by the bladder is distributed, thereby further improving the pressure-bearing capacity and structural safety without significantly increasing the weight, while also extending the service life of the bladder.

[0035] Alternatively, by applying a TPU coating to the UHMWPE fabric or using different weaving methods (such as woven fabric or UD non-woven fabric), air tightness, processability, and structural adaptability can be further improved while ensuring pressure resistance, thereby reducing processing costs.

[0036] In summary, this invention, through structural decoupling design, high-performance material matching, and pressure-adjustment-based control, outperforms existing technologies in terms of structural simplification, pressure-bearing capacity, control efficiency, and economy, and has good engineering application value. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the dual-chamber airship of the present invention; Figure 2 This is a schematic diagram of the buoyancy chamber of the present invention; Figure 3 This is a schematic diagram of the pressure chamber structure of the present invention; Figure 4 This is a schematic diagram of the lifting and lowering control process of the dual-chamber structure airship of the present invention; Figure 5 This is a schematic diagram of another embodiment of the present invention; Figure 6 This is a schematic diagram of the dual-compartment airship structure of the present invention, which uses high-pressure gas cylinders as pressure chambers.

[0039] The annotations in the attached figures are explained as follows: 1-Buoyancy chamber; 2-Pressure chamber; 3-Connection structure; 4-Emergency valve; 5-Buoyancy chamber vent; 6-High-strength cable net; 7-Pressure chamber vent. Detailed Implementation

[0040] I. General Description

[0041] In one embodiment of the present invention, to make the objectives, technical solutions, and beneficial effects of the present invention clearer, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the scope of protection of the present invention.

[0042] It should be noted that in the description of this invention, terms such as "upper," "lower," "inner," and "outer," as well as orientation or positional relationships, are only based on the relative positional relationships shown in the accompanying drawings and are used to facilitate the description of this invention and simplify the explanation. They are not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0043] It should also be noted that, where there is no conflict, the technical features in the various embodiments of the present invention can be combined with each other.

[0044] Furthermore, the structures shown in the accompanying drawings are merely illustrative representations of the present invention, intended to aid in understanding the technical solutions of the present invention. Their shapes, sizes, and proportions do not represent specific limitations of actual products.

[0045] The following will combine Figures 1 to 6 The structural composition and working principle of the dual-chamber airship of the present invention will be described in detail.

[0046] II. Overall Structure Description

[0047] In one embodiment of the present invention, such as Figure 1 As shown, the present invention provides a dual-chamber airship, the overall structure of which mainly includes a buoyancy chamber 1, a pressure chamber 2 and a connecting structure 3, which are connected by a structure to form an integrated airship system.

[0048] Specifically, the buoyancy chamber 1 is used to contain lifting gas to provide the main buoyancy required by the airship; the pressure chamber 2 is used to contain air, and by adjusting the filling and discharging of air in the pressure chamber 2, the overall average density of the airship can be adjusted, thereby enabling the airship to rise or fall.

[0049] In some embodiments of the present invention, the pressure chamber 2 is a pressure-resistant bladder structure, and the buoyancy chamber 1 and the pressure chamber 2 are each composed of independent bladders, with no shared bladder wall between them.

[0050] In some other embodiments of the present invention, the pressure chamber 2 is a high-pressure gas cylinder, and the high-pressure gas cylinder is independent of the buoyancy chamber 1, and there is no shared wall between the two.

[0051] The buoyancy chamber 1 and the pressure chamber 2 are connected as one unit by the connecting structure 3 to ensure the stability of the overall structure of the airship during take-off, landing and flight.

[0052] In this embodiment, the buoyancy chamber 1 and the pressure chamber 2 can be arranged vertically, that is, the buoyancy chamber 1 is located above the pressure chamber 2, so as to use the lift generated by the buoyancy chamber 1 to lift the pressure chamber 2. Of course, in other embodiments, the buoyancy chamber 1 and the pressure chamber 2 can also be arranged in parallel or other connection forms. As long as the overall structure can be stably connected and the function can be realized, they are all within the protection scope of this invention.

[0053] Furthermore, since the buoyancy chamber 1 and the pressure chamber 2 adopt independent capsule structures, the buoyancy function and the pressure regulation function are structurally decoupled, thereby avoiding the design complexity problem caused by simultaneously achieving airtightness and pressure in the same capsule in the prior art. This is beneficial for optimizing the design, manufacturing and testing of the buoyancy chamber 1 and the pressure chamber 2 separately.

[0054] Alternatively, the connection structure 3 can be a flexible connection structure or a rigid connection structure. The flexible connection structure can be a high-strength rope connection structure, capable of adapting to attitude changes during flight; the rigid connection structure can be a rod or frame structure, used to improve overall structural rigidity. In practical applications, a combination of flexible and rigid connection methods can also be used to balance structural stability and adaptability.

[0055] Furthermore, the buoyancy chamber 1 and / or pressure chamber 2 can each be composed of one or more airbag units to meet different buoyancy and lifting adjustment requirements. In the case of a multi-airbag configuration, each airbag unit can be set independently or in combination, thereby improving structural flexibility and system redundancy.

[0056] In summary, through the above overall structural design, the dual-chamber airship of the present invention achieves structural separation and functional synergy between the buoyancy generation unit and the pressure adjustment unit, providing a foundation for subsequent simplified control, efficient lifting and lowering, and low-cost manufacturing.

[0057] Based on this, by installing a high-strength cable net 6 outside the pressure chamber 2 to distribute the internal pressure load, the pressure chamber 2 can achieve a gauge pressure capacity of over 10 kPa. The above-mentioned technical effect cannot be achieved by a single material replacement, but is achieved through structural decoupling design, material division of labor selection, and the synergistic effect of reinforced structures, thereby significantly improving the lifting and lowering adjustment efficiency and structural compactness of the airship.

[0058] III. Buoyancy Chamber Structure

[0059] In one embodiment of the present invention, such as Figure 2 As shown, the buoyancy chamber 1 is used to provide the main buoyancy for the airship, and its interior is filled with lifting gas, such as helium, hydrogen or other gases lighter than air.

[0060] Specifically, the buoyancy chamber 1 is composed of a flexible capsule, which is a deformable structure that can change volume with changes in ambient temperature and air pressure during use. This adapts to the thermal expansion and contraction of the lifting gas, allowing the buoyancy chamber 1 to operate with a near-zero pressure difference between the inside and outside. By adopting this near-zero pressure difference deformable structure, the pressure-bearing requirements of the buoyancy chamber 1 can be reduced, and the risk of lifting gas leakage can be minimized, improving buoyancy maintenance capability and system stability.

[0061] Furthermore, the buoyancy chamber 1 includes a gas barrier layer, which is preferably an EVOH composite membrane, particularly an EVOH silage oxygen barrier membrane. EVOH material has excellent gas barrier properties, especially low permeability to small molecule gases such as helium; compared with medium-barrier materials such as nylon and rubber, and low-barrier materials such as PET, HDPE, and PP, EVOH material can significantly improve the airtightness of the buoyancy chamber 1, thereby reducing the leakage rate of booster gases and extending the aerostat's dwell time.

[0062] Furthermore, by incorporating EVOH into the composite membrane structure, the adverse effects of the EVOH material's moisture sensitivity on barrier performance can be effectively reduced, while also considering the composite membrane's mechanical strength, flexibility, and processing performance. The EVOH composite membrane exhibits good elongation at break and processing adaptability, enabling it to accommodate volume changes caused by temperature variations during use of the buoyancy chamber 1, thereby meeting the comprehensive requirements of the buoyancy chamber body for high barrier properties, low cost, and deformability.

[0063] Furthermore, the EVOH composite membrane can be prepared by multi-layer co-extrusion or composite processes, wherein the EVOH layer is disposed as an air barrier layer in the middle layer of the composite structure, and polyethylene (PE), polypropylene (PP), or other flexible polymer material layers can be laminated on both sides to improve the overall mechanical properties and processing performance. Optionally, the specific processing technology of the composite membrane is not particularly limited, as long as a composite membrane structure that meets the airtightness requirements of the buoyancy chamber 1 can be prepared. Exemplarily, the composite membrane can be prepared by co-extrusion molding, casting lamination, coating lamination, hot pressing lamination, or adhesive lamination.

[0064] Furthermore, the buoyancy chamber 1 is equipped with an emergency valve 4, which is used to quickly release the lifting gas inside the buoyancy chamber 1 in case of abnormal situations, thereby reducing the buoyancy of the airship and enabling a rapid descent, thus improving the safety of the system. Optionally, the buoyancy chamber 1 is also equipped with a buoyancy chamber vent 5, which is used to inflate or deflate the buoyancy chamber 1 during manufacturing, commissioning, or maintenance.

[0065] Furthermore, under normal operating conditions, the buoyancy chamber 1 does not participate in the conventional lifting and lowering control process of the airship, that is, it does not routinely discharge or replenish the lifting gas through the buoyancy chamber vent 5, thereby avoiding frequent consumption of the lifting gas and reducing operating costs.

[0066] Furthermore, the buoyancy chamber 1 can be composed of one or more airbag units. When multiple airbag units are used, each airbag unit can be set up independently or in combination to improve the redundancy and reliability of the system.

[0067] In summary, by adopting a deformable near-zero pressure differential capsule structure and an EVOH composite membrane with excellent gas barrier properties, the buoyancy chamber 1 can reduce the loss of lifting gas while ensuring stable buoyancy output, and provide a guarantee for the long-term stable operation of the airship.

[0068] IV. Pressure Chamber Structure

[0069] In one embodiment of the present invention, such as Figure 3 As shown, the pressure chamber 2 is used to adjust the overall weight of the airship. It is filled with air, and the airship's lifting and lowering control is achieved by changing the air intake and exhaust.

[0070] (a) Pressure-resistant bladder-type pressure chamber

[0071] In some embodiments of the present invention, the pressure chamber 2 is a pressure-resistant bladder structure. Specifically, the pressure chamber 2 is composed of a bladder, which is used to withstand the pressure load generated by the internal gas. Unlike the deformable structure of the buoyancy chamber 1, the pressure chamber 2 has a relatively stable shape during operation, and its volume does not change proportionally with changes in internal pressure, thereby ensuring the controllability and stability of the pressure regulation process.

[0072] Furthermore, the pressure chamber 2 is provided with a pressure chamber vent 7, which is connected to the outside and is used to fill the pressure chamber 2 with air or exhaust air to adjust the air quality inside the pressure chamber 2, thereby changing the overall average density of the airship and realizing lift control.

[0073] Furthermore, the pressure chamber 2 includes a load-bearing layer, which is preferably made of UHMWPE fabric. UHMWPE material has a high specific strength and superior mechanical properties among common high-strength fiber materials, which helps to reduce the weight of the chamber while ensuring pressure resistance, thereby meeting the dual requirements of high strength and lightweight for the pressure chamber 2.

[0074] Furthermore, to fully utilize the mechanical properties of UHMWPE material, the UHMWPE fabric is preferably a woven fabric or a multi-layer unidirectional layup UD structure. The woven fabric structure has good overall stability and tear resistance, making it suitable for withstanding multi-directional stress; the multi-layer unidirectional layup structure has high strength utilization efficiency in both the warp and weft directions, which is beneficial for further improving the pressure-bearing capacity of the pressure chamber 2.

[0075] Furthermore, the UHMWPE fabric surface is provided with a TPU coating to improve the material's airtightness and processing adaptability, and to facilitate hot-melt welding or other sealing connections, thereby improving the overall sealing performance and durability of the pressure chamber 2.

[0076] Alternatively, the surface of the UHMWPE fabric can also be coated with a PU coating to improve the airtightness, sealing connection adaptability, and processing convenience of the pressure chamber material while ensuring pressure bearing performance.

[0077] Furthermore, a high-strength cable net 6 is provided on the outside of the pressure chamber 2. The high-strength cable net 6 covers the outside of the chamber and is used to share the tensile stress generated by the internal gas pressure, thereby further improving the pressure-bearing capacity and structural safety of the pressure chamber 2 without significantly increasing the weight. Preferably, the high-strength cable net 6 is made of high-strength fiber material, more preferably UHMWPE yarn.

[0078] Furthermore, in this invention, the pressure chamber 2 can withstand a gauge pressure of not less than 5 kPa during operation. In some embodiments, the pressure chamber 2 can withstand a gauge pressure of more than 10 kPa. By increasing the gauge pressure capacity of the pressure chamber 2, the required air volume can be significantly reduced under the same lifting and adjustment requirements, thereby reducing the size of the pressure chamber, reducing material usage, and improving the overall structural compactness.

[0079] Furthermore, the pressure chamber 2 can be composed of one or more airbag units. In a multi-airbag structure, each airbag unit can be independently inflated or deflated through its own pressure chamber vent 7, thereby achieving more precise lifting and lowering adjustment control.

[0080] (ii) High-pressure gas cylinder type pressure chamber

[0081] In other embodiments of the invention, such as Figure 6 As shown, the pressure chamber 2 is a high-pressure gas cylinder. The high-pressure gas cylinder is used to contain air and serves as the ballast air container for the airship. The high-pressure gas cylinder and the buoyancy chamber 1 are independent of each other, do not share a wall, and are connected as one unit by the connecting structure 3.

[0082] Furthermore, the high-pressure gas cylinder is provided with a pressure chamber vent 7, which is used to fill the high-pressure gas cylinder with air or to discharge the air inside the high-pressure gas cylinder. The pressure chamber vent 7 can be a cylinder valve port of the high-pressure gas cylinder or a pipeline interface connected to the cylinder valve port.

[0083] Furthermore, the high-pressure gas cylinder is selected from one of the following: an all-metal gas cylinder, a metal-lined circumferentially wound gas cylinder, a metal-lined fully wound gas cylinder, a non-metallic-lined fully wound gas cylinder, or a linerless all-composite gas cylinder. For example, the high-pressure gas cylinder can be a 40L steel gas cylinder, a CNG-2 circumferentially wound gas cylinder, a CNG-3 fully wound cylinder, a CNG-4 fully wound cylinder, or a vehicle-grade compressed gas cylinder with a plastic-lined carbon fiber fully wound cylinder.

[0084] Furthermore, the high-pressure gas cylinder can withstand a gauge pressure of not less than 5 kPa under operating conditions. Since the high-pressure gas cylinder can employ a mature pressure-resistant container structure, it can achieve a large air quality regulation range within a relatively small volume, thereby reducing the pressure chamber volume, lowering the airship's motion resistance, and improving the structural reliability of the pressure chamber.

[0085] In summary, by using a pressure-resistant bladder structure or a high-pressure gas cylinder as the pressure chamber 2, and combining it with high-strength materials, external reinforcement structures, or mature high-pressure vessel structures, the pressure chamber 2 can achieve high pressure resistance while taking into account both lightweight and structural reliability, thereby providing the airship with efficient and stable lifting and lowering adjustment capabilities.

[0086] V. Connection Structure

[0087] In one embodiment of the present invention, the connecting structure 3 is used to connect the buoyancy chamber 1 and the pressure chamber 2 into a whole, so as to ensure the stability of the overall structure of the airship during take-off, descent and flight, and to prevent relative displacement between the buoyancy chamber 1 and the pressure chamber 2.

[0088] Specifically, the connection structure 3 can be a flexible connection structure, a rigid connection structure, or a combination of both.

[0089] Furthermore, when the connecting structure 3 adopts a flexible connecting structure, it can be a high-strength rope structure. By flexibly connecting the buoyancy chamber 1 and the pressure chamber 2, the system can adapt to airflow disturbances and attitude changes during flight, thereby reducing local stress concentration and improving the safety of the overall structure.

[0090] Furthermore, when the connecting structure 3 adopts a rigid connecting structure, it can be a rod structure or a frame structure, which is used to establish a relatively fixed spatial positional relationship between the buoyancy chamber 1 and the pressure chamber 2, thereby improving the overall structural rigidity and morphological stability of the airship.

[0091] Alternatively, the connection structure 3 may employ a combination of flexible and rigid connections to ensure structural stability while also considering the system's compliance and environmental adaptability.

[0092] Furthermore, the arrangement of the connecting structure 3 can be adjusted according to the spatial layout of the buoyancy chamber 1 and the pressure chamber 2. For example, when the buoyancy chamber 1 is located above the pressure chamber 2, the connecting structure 3 can be arranged vertically to transmit the lift generated by the buoyancy chamber 1. In other embodiments, multi-point connection or ring connection can also be adopted according to actual needs to improve connection stability.

[0093] Furthermore, the connecting structure 3 can be evenly distributed at multiple locations between the buoyancy chamber 1 and the pressure chamber 2 to distribute the load and improve the reliability of the connection.

[0094] In summary, by setting up the connection structure 3, the buoyancy chamber 1 and the pressure chamber 2 can be stably connected while maintaining structural independence. This allows the overall structure to work collaboratively while ensuring functional decoupling, thereby improving the stability and reliability of the airship.

[0095] VI. Lifting Control Method

[0096] In one embodiment of the present invention, such as Figure 4 As shown, the dual-chamber airship of the present invention achieves ascent and descent control by adjusting the air mass inside the pressure chamber 2. Its control principle is to change the overall average density of the airship to make it greater than or less than the ambient air density, thereby achieving descent or ascent.

[0097] Specifically, the lifting control method includes the following process: When the airship needs to descend, air is introduced into the pressure chamber 2 through the air vent 7, increasing the air mass in the pressure chamber 2, thereby increasing the overall weight and average density of the airship. When the overall weight of the airship exceeds the buoyancy it experiences, the airship begins to descend, and the descent speed can be controlled by adjusting the inflation rate.

[0098] When the airship needs to rise, the air in the pressure chamber 2 is discharged through the air vent 7, reducing the mass of the air in the pressure chamber 2, thereby reducing the overall weight and average density of the airship. When the overall weight of the airship is less than the buoyancy it experiences, the airship begins to rise, and the ascent speed can be controlled by adjusting the exhaust rate.

[0099] Furthermore, during the aforementioned lifting control process, the lifting gas in the buoyancy chamber 1 does not participate in routine regulation, that is, the lifting gas is not discharged or replenished through the buoyancy chamber vent 5, thereby avoiding the consumption of the lifting gas.

[0100] Preferably, the lifting control process is a closed-loop reversible process, that is, by increasing or decreasing the amount of air in the pressure chamber 2, the airship can be repeatedly switched between rising and falling, thereby improving the flexibility and reusability of the control.

[0101] Furthermore, in this invention, the lifting control relies solely on the change in air quality within the pressure chamber 2, resulting in a single control variable, simple control logic, and no need for coordinated adjustment of multiple gas systems, thereby reducing the complexity of the control system.

[0102] Furthermore, when the airship is in an emergency, the lifting gas inside the buoyancy chamber 1 can be quickly released by opening the emergency valve 4 on the buoyancy chamber 1, which will rapidly reduce the buoyancy of the airship and thus achieve a rapid descent, improving the safety of the system.

[0103] Furthermore, in the implementation of the multi-pressure chamber structure, each pressure chamber 2 can be independently inflated or deflated through its own pressure chamber vent 7, thereby achieving more precise lifting and lowering adjustments, and even attitude control can be achieved through differentiated adjustments.

[0104] In summary, by adopting a lifting control method that only adjusts the air quality in the pressure chamber 2, this invention achieves a lifting control that is simple in structure, low in cost, and highly reversible without consuming lifting gas. Compared with existing technical solutions that rely on gas transfer or multi-chamber coupling adjustment, it has higher practicality and engineering adaptability.

[0105] VII. Example 1

[0106] In one embodiment of the present invention, a dual-cabin airship is provided, which is suitable for applications such as low-altitude environmental monitoring.

[0107] like Figures 1 to 4 As shown, the airship includes a buoyancy chamber 1, a pressure chamber 2, and a connecting structure 3.

[0108] Specifically, the buoyancy chamber 1 adopts a single airbag structure, filled with helium as the lifting gas. The airbag body of the buoyancy chamber 1 is made of EVOH composite membrane material, preferably EVOH silage oxygen barrier membrane, and is formed into a sealed structure through a hot-melt welding process to ensure good airtight performance. The buoyancy chamber 1 is equipped with an emergency valve 4, which can be opened in an emergency to release the lifting gas, thereby reducing buoyancy and achieving rapid descent.

[0109] Furthermore, in this embodiment, the gas barrier layer of the buoyancy chamber is made of an EVOH composite membrane, preferably an EVOH silage oxygen barrier membrane. EVOH material is a high-barrier material, especially with low permeability to small molecule gases such as helium; compared to medium-barrier materials such as nylon and rubber, and low-barrier materials such as PET, HDPE, and PP, EVOH material can better meet the airtightness requirements of the buoyancy chamber. By adopting a composite membrane structure, the adverse effects of the moisture sensitivity of EVOH material on barrier performance can be reduced, while taking into account the material's ease of processing, low cost, and high elongation at break, thereby adapting to the deformation requirements of the buoyancy chamber due to changes in internal gas volume during use.

[0110] Furthermore, the buoyancy chamber 1 is a deformable structure that can change volume with changes in ambient temperature during operation, thereby adapting to the thermal expansion and contraction of the lifting gas; during normal use, the buoyancy chamber 1 does not participate in the lifting and lowering control of the airship and does not perform routine exhaust operations.

[0111] Specifically, the pressure chamber 2 adopts a single airbag structure, the body of which is made of UHMWPE woven fabric and has a TPU coating on the surface to improve airtightness and processing performance. The pressure chamber 2 is processed into an airtight structure through a hot-melt welding process.

[0112] Furthermore, a high-strength cable net 6, made of UHMWPE fiber, is fitted outside the pressure chamber 2 to distribute the internal pressure load borne by the chamber, thereby improving the overall pressure-bearing capacity. In this embodiment, the pressure chamber 2 can withstand a gauge pressure of approximately 12 kPa.

[0113] The pressure chamber 2 is equipped with a pressure chamber vent 7 for connecting with the outside world. Air can be introduced into the pressure chamber 2 or expelled through the vent 7 to regulate the air quality inside the pressure chamber 2.

[0114] Specifically, the connecting structure 3 adopts a high-strength rope structure to connect the buoyancy chamber 1 and the pressure chamber 2 into a whole, so as to ensure that the two do not undergo relative displacement during use.

[0115] In this embodiment, the ascent and descent control process of the airship is as follows: When descent is required, air is introduced into the pressure chamber 2 through the air vent 7, increasing the air mass in the pressure chamber 2 and thus increasing the overall average density of the airship. When its weight exceeds the buoyancy, the airship descends; and the descent speed can be controlled by adjusting the amount of air introduced.

[0116] When ascent is required, the air in the pressure chamber 2 is discharged through the air vent 7 of the pressure chamber, which reduces the mass of the air in the pressure chamber 2 and thus reduces the overall average density of the airship. When its weight is less than the buoyancy, the airship ascends; and the ascent speed can be controlled by adjusting the exhaust volume.

[0117] In an emergency, helium gas can be quickly released by opening the emergency valve 4 on the buoyancy chamber 1, thereby rapidly reducing buoyancy and enabling the airship to land quickly.

[0118] In summary, this embodiment adopts a completely independent structural design for the buoyancy chamber 1 and the pressure chamber 2, and achieves lifting control by adjusting the air quality inside the pressure chamber 2. While ensuring structural simplicity, it achieves low-cost, reversible and stable lifting control, which is suitable for low-altitude application scenarios.

[0119] VIII. Example 2

[0120] In one embodiment of the present invention, a dual-cabin airship is provided, which is suitable for applications such as high-altitude communication.

[0121] like Figures 1 to 5 As shown, the airship includes a buoyancy chamber 1, a pressure chamber 2, and a connecting structure 3.

[0122] Specifically, the buoyancy chamber 1 is composed of multiple airbag units. In this embodiment, the buoyancy chamber 1 includes three airbag units, all of which are filled with hydrogen as the lifting gas. The bladder body of the buoyancy chamber 1 is made of EVOH composite membrane material and a sealed structure is formed by ultrasonic welding to ensure good airtightness.

[0123] Furthermore, each buoyancy chamber airbag unit is equipped with an emergency valve 4. In case of an abnormal situation, the boosting gas can be released by opening each emergency valve 4 to quickly reduce buoyancy.

[0124] The buoyancy chamber 1 is a deformable structure that can change volume with environmental changes during operation to adapt to the thermal expansion and contraction of the lifting gas. Under normal operating conditions, the buoyancy chamber 1 does not participate in the conventional lifting and lowering control of the airship.

[0125] Specifically, the pressure chamber 2 is composed of multiple airbag units. In this embodiment, the pressure chamber 2 includes two airbag units. The airbag body of the pressure chamber 2 is made of UHMWPE orthogonal laminated structural material and can be processed using a stitching process to form the airbag structure.

[0126] Furthermore, in this embodiment, the load-bearing layer of the pressure chamber is made of UHMWPE fabric. UHMWPE material has a high specific strength, which helps to reduce the weight of the chamber while ensuring pressure-bearing capacity, thus meeting the dual requirements of high strength and lightweight for the pressure chamber. To fully utilize the mechanical properties of UHMWPE material, the UHMWPE fabric is preferably woven fabric or multi-layer unidirectional ply fabric. Woven fabric structures have good overall stability and tear resistance, suitable for withstanding multi-directional forces; multi-layer unidirectional ply fabrics have high strength utilization efficiency in the main force direction, which helps to further improve the pressure-bearing performance of the pressure chamber.

[0127] Furthermore, each pressure chamber airbag unit is covered with a high-strength cable net 6, which is made of UHMWPE fiber and is used to share the internal pressure load borne by the airbag, thereby improving the pressure bearing capacity.

[0128] In this embodiment, each pressure chamber airbag unit is provided with a pressure chamber vent 7, and each pressure chamber vent 7 is independent of each other, so that each airbag unit can be inflated or deflated separately. In this embodiment, the pressure chamber 2 can withstand a gauge pressure of approximately 15 kPa.

[0129] Specifically, the connection structure 3 adopts a mechanical snap-fit ​​structure to connect multiple buoyancy chamber airbag units and multiple pressure chamber airbag units into a whole, thereby ensuring the stability of the overall structure in a high-altitude environment.

[0130] In this embodiment, the ascent and descent control process of the airship is as follows: When descent is required, air can be simultaneously introduced into the pressure chamber 2 through the air vents 7 of each pressure chamber, or air can be introduced into some pressure chamber airbag units according to control requirements, so as to increase the overall or local air mass of the pressure chamber 2, thereby increasing the overall average density of the airship and achieving descent; and fine control can be achieved by adjusting the inflation volume of different airbag units.

[0131] When ascent is required, the air in the pressure chamber 2 can be discharged through the air vents 7 of each pressure chamber, or some airbag units can be vented as needed to reduce the overall average density of the airship and achieve ascent.

[0132] Furthermore, in a multi-pressure chamber structure, by differentially controlling the airbag units of different pressure chambers, not only can the lifting and lowering be adjusted, but the attitude of the airship can also be adjusted to a certain extent.

[0133] In an emergency, the booster gas can be quickly released by opening the emergency valves 4 on all buoyancy chambers 1, thereby enabling the airship to land quickly.

[0134] In summary, this embodiment, by setting up multiple buoyancy chamber airbag units and multiple pressure chamber airbag units, and improving the pressure-bearing capacity of the pressure chamber 2, achieves a wider range of lifting and lowering adjustment capabilities and higher precision control capabilities while ensuring structural stability, making it suitable for application scenarios in complex high-altitude environments.

[0135] IX. Example 3

[0136] In one embodiment of the present invention, a dual-chamber airship structure using high-pressure gas cylinders as pressure chambers is provided, which is suitable for application scenarios that require a large air quality regulation range or require a reduction in the volume of the pressure chamber.

[0137] like Figure 6 As shown, the airship includes a buoyancy chamber 1, a high-pressure gas cylinder serving as a pressure chamber 2, and a connecting structure 3.

[0138] Specifically, the buoyancy chamber 1 adopts a flexible capsule structure and is filled with helium, hydrogen, or other lifting gases lighter than air. The capsule of the buoyancy chamber 1 is provided with a gas barrier layer, which is made of EVOH composite membrane material, preferably EVOH silage oxygen barrier membrane, to reduce the permeation rate of the lifting gas and extend the aerostat's dwell time.

[0139] Furthermore, the buoyancy chamber 1 is a deformable structure, capable of changing volume with variations in ambient temperature and air pressure during operation to accommodate the thermal expansion and contraction of the lifting gas. Under normal operating conditions, the buoyancy chamber 1 does not participate in the conventional ascent and descent control of the airship, and does not routinely discharge or replenish the lifting gas through the buoyancy chamber vent 5.

[0140] Specifically, the high-pressure gas cylinder is used to contain air and serves as the ballast air container for the airship. The high-pressure gas cylinder and the buoyancy chamber 1 are independent of each other, do not share a wall, and are connected as one unit by the connecting structure 3.

[0141] Furthermore, the high-pressure gas cylinder is equipped with a pressure chamber vent 7. The pressure chamber vent 7 can be a cylinder valve port of the high-pressure gas cylinder, or a pipeline interface connected to the cylinder valve port. Air can be introduced into the high-pressure gas cylinder or expelled from the high-pressure gas cylinder through the pressure chamber vent 7 to regulate the air quality inside the high-pressure gas cylinder.

[0142] Furthermore, the high-pressure gas cylinder can be one of the following: an all-metal gas cylinder, a metal-lined circumferentially wound gas cylinder, a metal-lined fully wound gas cylinder, a non-metallic-lined fully wound gas cylinder, or a linerless all-composite gas cylinder. For example, the high-pressure gas cylinder can be a 40L steel gas cylinder, a CNG-2 circumferentially wound gas cylinder, a CNG-3 fully wound cylinder, a CNG-4 fully wound cylinder, or a vehicle-grade compressed gas cylinder with a plastic-lined carbon fiber fully wound cylinder.

[0143] Specifically, the connecting structure 3 can be a rope connection structure, a rigid connection structure, or a combination of both. In this embodiment, the high-pressure gas cylinder is located below the buoyancy chamber 1 and is connected to the buoyancy chamber 1 via the connecting structure 3 to ensure the relative position stability of the high-pressure gas cylinder and the buoyancy chamber 1 during the lifting and lowering process.

[0144] In this embodiment, the ascent and descent control process of the airship is as follows: When descent is required, air is introduced into the high-pressure gas cylinder through the air vent 7 of the pressure chamber, increasing the air mass in the high-pressure gas cylinder and thus increasing the overall average density of the airship. When the overall weight of the airship exceeds the buoyancy it experiences, the airship descends.

[0145] When ascent is required, the air in the high-pressure gas cylinder is discharged through the air vent 7 of the pressure chamber, reducing the mass of the air in the high-pressure gas cylinder and thus reducing the overall average density of the airship. When the overall weight of the airship is less than the buoyancy it experiences, the airship ascends.

[0146] In an emergency, the lifting gas can be quickly released by opening the emergency valve 4 on the buoyancy chamber 1, thereby rapidly reducing buoyancy and enabling the airship to land quickly.

[0147] In summary, this embodiment, by using a high-pressure gas cylinder as the pressure chamber 2, maintains the structural independence and functional decoupling of the buoyancy chamber 1 and the pressure chamber 2. It can utilize the high pressure resistance of the high-pressure gas cylinder to achieve a large air quality regulation range in a small volume, thereby reducing the volume of the pressure chamber, reducing the airship's motion resistance, and improving system reliability.

[0148] 10. Modified Implementation Methods

[0149] In one embodiment of the present invention, the above embodiments are merely preferred embodiments of the present invention. Those skilled in the art can make various modifications or substitutions to the structural form and technical solution of the present invention without departing from the spirit and essence of the present invention, and all such modifications or substitutions should fall within the protection scope of the present invention.

[0150] Furthermore, regarding the structure of the buoyancy chamber 1, the number of buoyancy chambers 1 can be adjusted according to actual application requirements. It can be a single airbag structure or a combination of multiple airbag units. In addition to helium or hydrogen, the lifting gas can also be other gases lighter than air.

[0151] Furthermore, regarding the structure of the pressure chamber 2, the pressure chamber 2 can adopt a single airbag structure, a multi-airbag combination structure, or a high-pressure gas cylinder structure. When the pressure chamber 2 adopts an airbag structure, each airbag unit can be set independently or connected. In addition to UHMWPE material, the airbag material of the pressure chamber 2 can also be other fiber materials or composite materials with high strength and pressure resistance. When the pressure chamber 2 adopts a high-pressure gas cylinder structure, the high-pressure gas cylinder can be one of the following: an all-metal gas cylinder, a metal-lined circumferentially wound gas cylinder, a metal-lined fully wound gas cylinder, a non-metallic-lined fully wound gas cylinder, or a linerless all-composite gas cylinder.

[0152] Alternatively, the high-strength cable net 6 outside the pressure chamber 2 can be set or omitted according to the pressure requirements, or other forms of constraint structure can be adopted, such as a strip constraint structure, a frame constraint structure, etc.

[0153] Furthermore, regarding the connection structure 3, the connection structure 3 can adopt various connection methods, including but not limited to rope connection, rigid connector connection, frame connection or a combination thereof; the connection position and the number of connection points can also be adjusted according to the structural size and stress conditions.

[0154] Furthermore, in terms of spatial arrangement, the buoyancy chamber 1 and the pressure chamber 2 can be arranged vertically, side by side, or in other spatial combinations. As long as a stable connection and functional coordination between the buoyancy chamber 1 and the pressure chamber 2 can be achieved, they are all within the scope of protection of this invention.

[0155] Furthermore, in terms of lifting control methods, in addition to air conditioning through a single pressure chamber 2, multiple pressure chamber airbag units can be used for coordinated adjustment, or a zoned control method can be adopted to achieve more precise lifting control or attitude adjustment.

[0156] Alternatively, in specific implementations, the processing technology of the buoyancy chamber 1 and the pressure chamber 2 can be selected according to the material properties, such as hot melt welding, ultrasonic welding, laser welding or stitching.

[0157] In summary, the scope of protection of this invention should not be limited to the specific embodiments described above. For those skilled in the art, all equivalent substitutions or modifications made without departing from the technical concept of this invention should be included within the scope of protection of this invention.

[0158] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, various modifications, equivalent substitutions, or improvements can be made to the technical solutions of the present invention without departing from the spirit and essence of the present invention, and all such modifications, equivalent substitutions, or improvements should fall within the scope of protection of the present invention.

[0159] It should be noted that the technical features in the various embodiments described in this specification can be arbitrarily combined to form new implementation methods without conflict, and the resulting technical solutions should also fall within the protection scope of this invention.

[0160] Furthermore, the terminology used in this specification is for describing specific embodiments only and is not intended to limit the invention. Unless otherwise expressly defined, the terms "comprising," "including," etc., should be understood in an open-ended sense, meaning including but not limited to the listed technical features.

[0161] At the same time, it should be understood that the structures, proportions and dimensional parameters shown in this specification and the accompanying drawings are merely illustrative and do not constitute a limitation on the present invention. They can be adjusted according to specific needs in practical applications.

[0162] In summary, the scope of protection of this invention should be determined by the appended claims, and the specification and drawings are only used to interpret the claims.

Claims

1. A dual-chamber airship, characterized in that, include: Buoyancy chamber (1), pressure chamber (2) and connecting structure (3); The buoyancy chamber and the pressure chamber (2) are each composed of independent bladders, with no shared wall between them, and are connected as one unit by the connecting structure (3); The buoyancy chamber (1) is provided with an air barrier layer, which is made of EVOH composite membrane material. The pressure chamber (2) is provided with a load-bearing layer, which is made of ultra-high molecular weight polyethylene (UHMWPE) fabric. The pressure chamber (2) is a pressure-resistant structure, and its body can withstand a gauge pressure of not less than 5 kPa in working condition; By selecting different functional materials for the buoyancy chamber (1) and the pressure chamber (2), the buoyancy chamber (1) meets the airtightness requirements and the pressure chamber (2) meets the pressure requirements, thereby avoiding the simultaneous consideration of air resistance and load-bearing performance in the same bladder.

2. The dual-chamber airship according to claim 1, characterized in that, The EVOH composite membrane is an EVOH silage oxygen barrier membrane.

3. The dual-chamber airship according to claim 1, characterized in that, The UHMWPE fabric is either woven or UHMWPE UD fabric.

4. The dual-chamber airship according to claim 3, characterized in that, The UHMWPE fabric surface is coated with TPU.

5. The dual-chamber airship according to claim 1, characterized in that, The pressure chamber is equipped with a high-strength cable net.

6. The dual-chamber airship according to claim 5, characterized in that, The high-strength cable net is made of UHMWPE yarn.

7. The dual-chamber airship according to claim 3, characterized in that, The UHMWPE fabric surface is coated with a PU coating.

8. A dual-chamber airship, characterized in that, include: Buoyancy chamber (1), high-pressure gas cylinder as pressure chamber (2) and connecting structure (3); The buoyancy chamber (1) is used to contain lifting gas. The buoyancy chamber (1) is provided with a gas barrier layer, which is made of EVOH composite membrane material. The high-pressure gas cylinder is used to contain air and is provided with a pressure chamber vent (7) for filling or discharging air. The buoyancy chamber (1) and the high-pressure gas cylinder are independent of each other, and there is no shared wall between them. They are connected as one unit through the connecting structure (3). The high-pressure gas cylinder is selected from one of the following: all-metal gas cylinder, metal-lined circumferentially wound gas cylinder, metal-lined fully wound gas cylinder, non-metal-lined fully wound gas cylinder, or linerless all-composite gas cylinder. The high-pressure gas cylinder can withstand a gauge pressure of not less than 5 kPa under working conditions; Specifically, by filling the high-pressure gas cylinder with air or expelling the air from the high-pressure gas cylinder, the air mass inside the high-pressure gas cylinder is changed, thereby adjusting the overall average density of the airship.

Images