CN111746772B - Rigid-flexible integrated airship nose cone - Google Patents

Rigid-flexible integrated airship nose cone Download PDF

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Publication number
CN111746772B
CN111746772B CN202010633137.6A CN202010633137A CN111746772B CN 111746772 B CN111746772 B CN 111746772B CN 202010633137 A CN202010633137 A CN 202010633137A CN 111746772 B CN111746772 B CN 111746772B
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airship
nose cone
supporting strips
cone
rigid
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CN111746772A (en
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陈务军
胡建辉
高成军
徐建东
杨钧
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Shanghai Jiaotong University
New United Group Co Ltd
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Shanghai Jiaotong University
New United Group Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64BLIGHTER-THAN AIR AIRCRAFT
    • B64B1/00Lighter-than-air aircraft
    • B64B1/06Rigid airships; Semi-rigid airships
    • B64B1/08Framework construction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64BLIGHTER-THAN AIR AIRCRAFT
    • B64B1/00Lighter-than-air aircraft
    • B64B1/66Mooring attachments

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  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
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Abstract

The invention discloses a rigid-flexible integrated airship nose cone, which relates to the technical field of floating aircraft structures and comprises an outer nose cone, an inner nose cone and a bag body; the outer nose cone is covered and connected with the outer surface of the airship bag body; the inner nose cone is connected with the inner structure of the airship and transmits external pressure load to the inner structure; the air-tight airship comprises an airship body, wherein the airship body is an airship main airbag which is formed by thermally welding a plurality of sheets, has air tightness, and maintains the shape and the rigidity of the airship through the internal and external pressure difference. The invention realizes the complete and unified rigid and flexible integrated structure of the airship nose cone and the new airship, has the advantages of simple structure, convenient integration, reasonable stress, light weight, large integral rigidity and the like, and can enhance the capability of the airship envelope in resisting local gust and mooring load.

Description

Rigid-flexible integrated airship nose cone
Technical Field
The invention relates to the technical field of floating aircrafts, in particular to a rigid-flexible airship nose cone with an integrated structure.
Background
The airship is lighter than an air (LTA) aircraft, has low energy consumption and environmental friendliness, and once has gained great success in the field of aeronautics and technologies, the airship is active in each stage of human aviation development with its unique advantages, and in the 20 th century and the 80 th era, the novel airship has gained a long-term development along with the innovation of novel high-performance composite materials, solar energy and energy storage battery technologies, computer communication electronic technologies and the like.
Airships are often classified into hard airships, soft airships, and semi-hard airships according to a structural system. The hard airship is a Zeppelin typical system, the interior of the hard airship adopts a double-layer cylindrical grid structure form, the integral rigidity is large, the size is large, and the length of the hard airship reaches about 250 m; the soft airship is an inflatable bag body, the overall structure is light, the rigidity is small, the controllability is poor, generally, the soft structure is adopted for smaller airships, and the maximum length reaches 120 m; the semi-hard airship is designed into a structure system with high rigidity or high efficiency and light weight in the bearing part of the airship, so as to realize the overall light weight and reasonable stress. The main field of the innovation of the novel configuration airship is structural system innovation.
The airship nose cone is an important component in an airship structure, and mainly has the functions of bearing pneumatic load, mooring stress and the like. The soft airship mostly adopts rotational symmetric radial stays, has the length of about 1/20 coxswain, and bears local gusts of wind and is weak in anchoring force. The redundant structure of crossing of hard formula dirigible, utricule are only local sealed, and the nose cone is similar to the aircraft nose, can effectively pass power, but weight is great.
Patent cn201521080600.x, which is a rigid structure system, proposes an airship with a rigid structure system, which comprises a prestressed structure system and a flexible outer capsule structure, wherein the prestressed structure system consists of a central mandrel, prestressed stiffening rings and longitudinal connecting rods. However, this patent does not teach a nose cone and an innovative nose cone design.
The airship adopts a structure that an integral keel and a pre-tension capsule body of a tension-compression self-balancing system are integrated to cooperatively bear force, and has the characteristics of integral shape retention under the zero pressure of the capsule body, integral rigidity under the low pressure and high bearing capacity. However, this patent does not teach a nose cone and an innovative nose cone design.
The patent of 'stratospheric airship with large-scale rigid-flexible integrated structure' (CN201910958705.7) such as military service and Hujiahui, etc. provides a stratospheric airship with large-scale rigid-flexible integrated structure, which comprises an outer bag body supported by a tension integral main keel and a plurality of sealed inner bag bodies inside the outer bag body. However, this patent also does not teach a nose cone and innovative nose cone designs.
Therefore, those skilled in the art are dedicated to develop a rigid-flexible integrated airship nose cone, so that the integrity and the unification of the rigid-flexible integrated structure of the new airship are realized, and the capability of resisting local gust and mooring loads of an airship capsule can be enhanced.
Disclosure of Invention
In view of the above defects in the prior art, the invention aims to solve the technical problem of inventing the rigid-flexible integrated airship nose cone, so that the integrity and unification of the rigid-flexible integrated structure of the airship nose cone and a new-structure airship are realized, and the airship has the advantages of simple structure, convenience in integration, reasonable stress, light weight, large overall rigidity and the like.
In order to achieve the purpose, the invention provides a rigid-flexible integrated airship nose cone which comprises an outer nose cone, an inner nose cone and a bag body; the outer nose cone is covered and connected with the outer surface of the airship bag body; the inner nose cone is connected with the inner structure of the airship and transmits external pressure load to the inner structure; the air-tight airship comprises an airship body, wherein the airship body is an airship main airbag which is formed by thermally welding a plurality of sheets, has air tightness, and maintains the shape and the rigidity of the airship through the internal and external pressure difference.
Further, the outer nose cone comprises a short stay, a long stay, an inner connecting ring, an outer connecting ring and a mooring cone.
Further, the short supporting strips and the long supporting strips are arranged on the head of the airship in a radiation mode and are not completely symmetrical.
Furthermore, the number of the long supporting strips at the lower part is large, the long supporting strips and the short supporting strips are arranged at intervals of one to two, and the distance above the equator is reduced.
Further, the inner connecting ring connects the short stay and the inner end of the long stay; the outer connecting rings are connected between the outer ends of the short supporting strips and the middle of the long supporting strips, and are used for restraining and reinforcing the positions of the short supporting strips and the long supporting strips and formed by segmented splicing.
Furthermore, the mooring cone is a conical lattice structure formed by the support rods, the top end of the mooring cone is connected with the mooring head mechanism, the bottom end of the mooring cone is connected with the inner connecting ring, and the mooring head mechanism can be conveniently connected with the locking mooring tower mechanism.
Further, the inner nose cone comprises a nose cone cover, a cone disc and a mandrel.
Further, the head cone cover is a light sandwich thin shell, the geometrical shape of the head cone cover is matched with that of the airship capsule, and the airship capsule and the effective diffusion load are protected.
Further, the cone disk connects the mandrel and the internal structure, integrates internal structural integrity and transfers external loads.
Further, the web is a high strength lightweight multifunctional laminated film material.
The technical effects are as follows:
the airship nose cone is an important component in an airship structure, and mainly has the functions of bearing pneumatic load, mooring stress and the like. The airship nose cone with the rigid-flexible integrated structure has the advantages of simple structure, convenience in integration, reasonable stress, light weight and high overall rigidity; the defects that the soft airship bears local gust and has weak anchoring force are improved, and the defects that the structure of the hard airship is redundant and the weight of the nose cone is large are also improved; the airship envelope has enhanced local wind gust resisting and mooring load resisting capacity, and the integrated rigid and flexible structure of airship nose cone and airship of new structure is realized.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a side view of a preferred embodiment of the present invention;
FIG. 2 is a perspective view of an external nose cone of a preferred embodiment of the present invention;
FIG. 3 is a perspective view of an internal nose cone of a preferred embodiment of the present invention;
wherein, 1-external conical head, 2-internal conical head, 3-balloon, 101-short stay, 102-long stay, 103-internal connecting ring, 104-external connecting ring, 105-captive cone, 201-conical head cover, 202-conical disk, 203-mandrel.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, a side view of a preferred embodiment of the present invention comprises an external nose cone 1, an internal nose cone 2, and a balloon 3. The outer nose cone 1 comprises short stays 101, long stays 102, an inner connecting ring 103, an outer connecting ring 104 and a mooring cone 105, and is covered and connected with the outer surface of the airship capsule; the inner nose cone 2 comprises a nose cone cover 201, a cone disc 202 and a mandrel 203, is connected with the inner structure of the airship and transmits external pressure load to the inner structure; the bag body 3 is a main air bag of the airship and is formed by heat-sealing and welding a plurality of sheets, the air bag has air tightness, the shape and the rigidity are maintained through the internal and external pressure difference, and the sheets are made of high-strength light multifunctional laminated film materials.
As shown in FIG. 2, a perspective view of an external nose cone of a preferred embodiment of the present invention includes short struts 101, long struts 102, inner connecting rings 103, outer connecting rings 104, and captive cones 105. The short stay 101 and the long stay 102 are arranged on the head of the airship in a radiation mode and are not completely symmetrical; the long stay 102 extends from the airship head to the arc edge or 1/4 coxswain, and the short stay 101 extends from the airship head to the arc 1/2; the number of the long supporting strips 102 at the lower part is large, the long supporting strips and the short supporting strips 101 can be arranged at intervals of one to two, and the distance above the equator is reduced; the short stay 101 and the long stay 102 are geometrically matched with the balloon 3; the short struts 101 and the long struts 102 may be CFRP lightweight thin-walled circular tubes.
The inner connecting ring 103 is connected with the inner ends of the short stay 101 and the long stay 102 and is L-shaped or T-shaped, and the inner connecting ring 103 is made of light composite materials. The outer connecting ring 104 connects the outer end of the short stay 101 and the middle part of the long stay 102, restrains and reinforces the positions of the short stay 101 and the long stay 102, and can be spliced into a sectional form.
The mooring cone 105 is a conical lattice structure formed by supporting rods, the top end of the conical lattice structure is connected with a mooring head mechanism, the bottom end of the conical lattice structure is connected with the inner connecting ring 103, the conical lattice structure is light in weight and high in rigidity, mooring loads can be effectively transmitted to the bottom of the mooring cone and transmitted to the airship capsule body 3 and the inner head cone 2, the supporting rods can be CFRP light thin-wall circular tubes, and the mooring head mechanism can be conveniently connected with a locking mooring tower mechanism.
As shown in FIG. 3, the perspective view of the inner nose cone of the preferred embodiment of the present invention comprises a nose cone cover 201, a cone disc 202 and a mandrel 203.
The inner nose cone 2 consists of a nose cone cover 201, a cone disc 202 and a mandrel 203, is connected with an inner structure of the airship and transmits external pressure load to the inner structure.
The head cone cover 201 is a light sandwich thin shell, the plane is circular, the diameter of the head cone cover is larger than that of the inner connecting ring 103 of the outer head cone 1, the geometric shape of the head cone cover is matched with that of the airship capsule 3, and the airship capsule 3 and effective diffusion load can be protected. The conical disc 202 is connected with the mandrel 203 and an internal structure, the integrity of the internal structure is integrated, external loads are transmitted, the mandrel 203 can be made of light composite materials, the conical disc 201 is of a central circular symmetrical structure, and light alloy materials are adopted.
The structural system size, material selection and performance parameters of the rigid-flexible integrated airship nose cone can be determined by parameter design analysis aiming at the overall design target and technical index of the airship.
The invention has the following outstanding technical effects: as an important component in an airship structure, the airship nose cone mainly has the functions of bearing pneumatic load, mooring stress and the like. The airship nose cone with the rigid-flexible integrated structure has the advantages of simple structure, convenience in integration, reasonable stress, light weight and high overall rigidity; the defects that the soft airship bears local gust and has weak anchoring force are improved, and the defects that the structure of the hard airship is redundant and the weight of the nose cone is large are also improved; the airship envelope has enhanced local wind gust resisting and mooring load resisting capacity, and the integrated rigid and flexible structure of airship nose cone and airship of new structure is realized.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.

Claims (6)

1. A rigid-flexible airship nose cone with an integrated structure is characterized by comprising an outer nose cone, an inner nose cone and a bag body; the outer nose cone is covered and connected with the outer surface of the airship capsule body; the inner nose cone is connected with an inner structure of the airship and transmits external pressure load to the inner structure; the air bag body is an airship main air bag, is formed by heat-seal welding of a plurality of sheets, has air tightness, and maintains the shape and the rigidity of the airship through the internal and external pressure difference; the outer nose cone comprises short supporting strips, long supporting strips, an inner connecting ring, an outer connecting ring and a mooring cone, wherein the short supporting strips and the long supporting strips are arranged in a radiation mode at the head of the airship and are not completely symmetrical, the number of the long supporting strips is large at the lower part, the long supporting strips and the short supporting strips are arranged at intervals of one to two, the number of the short supporting strips is reduced above the equator, the inner connecting ring is connected with the short supporting strips and the inner ends of the long supporting strips, the outer connecting ring is connected between the outer ends of the short supporting strips and the long supporting strips, the positions of the short supporting strips and the long supporting strips are restrained and strengthened, and the short supporting strips and the long supporting strips are spliced in sections.
2. The integrated rigid and flexible structure airship nose cone of claim 1, wherein the mooring cone is a support rod forming a cone lattice, the top end is connected with the mooring head mechanism, the bottom end is connected with the inner connecting ring, and the mooring head mechanism can be conveniently connected with the locking mooring tower mechanism.
3. The rigid-flexible integral structure airship nose cone of claim 1, wherein the inner nose cone is composed of a nose cone cover, a cone disc and a mandrel.
4. A rigid-flexible integral structural airship nose cone as claimed in claim 3 wherein the nose cone shroud is a lightweight sandwich shell with a geometry to match the airship envelope, protecting the airship envelope and effectively spreading loads.
5. The rigid-flexible unitary structural airship nose cone of claim 4, wherein the cone disc connects the mandrel and the internal structure, integrates internal structural integrity and transmits external loads.
6. The rigid-flexible integral structural airship nose cone of claim 1, wherein the web is a high-strength lightweight multifunctional laminated film material.
CN202010633137.6A 2020-07-02 2020-07-02 Rigid-flexible integrated airship nose cone Active CN111746772B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114132480B (en) * 2021-12-03 2023-08-04 中国特种飞行器研究所 Three-dimensional nose cone comparison foldable flexible device, and use method and preparation method thereof

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CN106477017A (en) * 2016-12-05 2017-03-08 中国特种飞行器研究所 Formula quick-release nose cone opened by a kind of middle-size and small-size unmanned airship umbrella
CN206466154U (en) * 2017-01-20 2017-09-05 深圳光启空间技术有限公司 Nose cone structure and the dirigible with it
CN111003135A (en) * 2019-12-19 2020-04-14 中国电子科技集团公司第三十八研究所 Five-point type mooring device for mooring balloon

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201367113Y (en) * 2008-10-29 2009-12-23 郭颀 Lifting and floating integrated semirigid airship
CN205293057U (en) * 2015-12-11 2016-06-08 中国特种飞行器研究所 Airship
CN205952277U (en) * 2016-05-31 2017-02-15 东莞前沿技术研究院 Nose corn and staying dirigible
CN106477017A (en) * 2016-12-05 2017-03-08 中国特种飞行器研究所 Formula quick-release nose cone opened by a kind of middle-size and small-size unmanned airship umbrella
CN206466154U (en) * 2017-01-20 2017-09-05 深圳光启空间技术有限公司 Nose cone structure and the dirigible with it
CN111003135A (en) * 2019-12-19 2020-04-14 中国电子科技集团公司第三十八研究所 Five-point type mooring device for mooring balloon

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