阅读说明：本技术 一种刚柔一体结构飞艇头锥 (Rigid-flexible integrated airship nose cone ) 是由 陈务军 胡建辉 高成军 徐建东 杨钧 于 2020-07-02 设计创作，主要内容包括：本发明公开了一种刚柔一体结构飞艇头锥,涉及浮空飞行器结构技术领域,包括外头锥、内头锥、囊体；所述外头锥覆盖连接于飞艇囊体外表面；所述内头锥连接飞艇内部结构,传递外部压力载荷至内部结构；所述囊体为飞艇主气囊,由多幅片热合焊接而成,具有气密性,通过内外压差维持飞艇的形态和刚度。本发明实现了飞艇头锥与新构型飞艇刚柔一体结构的完整统一,构造简单,集成方便,受力合理,具有重量轻,整体刚度大等优点,能增强飞艇囊体抵抗局部突风和系留锚泊载荷的能力。(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 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-tight airship is characterized in that the bag body is an airship main bag and is formed by heat-seal welding of a plurality of sheets, the air-tight airship is airtight, and the shape and the rigidity of the airship are maintained 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.)

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-tight airship is characterized in that the bag body is an airship main bag and is formed by heat-seal welding of a plurality of sheets, the air-tight airship is airtight, and the shape and the rigidity of the airship are maintained through the internal and external pressure difference.

2. The rigid-flexible integral structure airship nose cone of claim 1, wherein the outer nose cone comprises short struts, long struts, inner connecting rings, outer connecting rings, mooring cones.

3. The rigid-flexible integral structure airship nose cone of claim 2, wherein the short struts and the long struts are arranged in a radial manner on the airship head and are not completely symmetrical.

4. A rigid-flexible integral structure airship nose cone as claimed in claim 3 where the number of long struts is greater at the lower part, spaced one to two intervals from the short struts, decreasing above the equator.

5. The rigid-flexible integral structural airship nose cone of claim 4, wherein the inner connecting ring connects the short struts and the inner ends of the long struts; 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.

6. The rigid-flexible integrated airship nose cone of claim 2, wherein the mooring cone forms a conical lattice for the support rod, 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.

7. 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.

8. The rigid-flexible one-piece airship nose cone of claim 7, wherein the nose cone cover is a lightweight sandwich thin shell with a geometry that matches the airship envelope to protect the airship envelope and to spread payload.

9. The rigid-flexible unitary structural airship nose cone of claim 8, wherein the cone disc connects the mandrel and the internal structure, integrates internal structural integrity and transmits external loads.

10. The rigid-flexible integral structural airship nose cone of claim 1, wherein the web is a high-strength lightweight multifunctional laminated film material.

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 by smaller airships, and the maximum length of the airship 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 blimp mostly adopts a rotational symmetric radial stay, has a length of about 1/20 canyons, and bears local gusts 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 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 preservation 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 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 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-tight airship is characterized in that the bag body is an airship main bag and is formed by heat-seal welding of a plurality of sheets, the air-tight airship is airtight, and the shape and the rigidity of the airship are maintained 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 stay and the long stay are arranged in a radiation mode on the head of the airship 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 covers and is 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 an 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 connects 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 material. 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 internal 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 the 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 available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.