JP3526241B2 - Support Mechanism of Light Weight Pressurized Membrane Structure Wing for Rubber Airship - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a lightweight pressure membrane wing suitable for a huge soft airship (hull length 200 to 300 m) that is retained in the stratosphere and used for earth environment observation, radio relay, etc. The support mechanism,
The present invention relates to a support mechanism for a pressure membrane structure blade suitable for use as the tail blade.

[0002]

2. Description of the Related Art Conventional tail fins for commercial airships include an aluminum frame with FRP or the like, or a wing formed using a honeycomb material, etc., but all of them are solid aggregates. Or it has a shell structure. However, it is possible to stay in the stratosphere and the hull length is 2
In an airship that reaches about 20 meters, the weight reduction limit of the tail wings equipped on the fuselage is about 5000 kg / 4 pieces (total of stable wings and moving blades), which has the solid structure described above. If it is manufactured, it will have an excessive weight, and the design of the stratospheric airship will not be established.

In the stratosphere, the buoyancy of helium gas is 2
Since the size of the airship is reduced to about 1/0, it is necessary for the airship to be retained in the stratosphere to have an extremely lightweight structure as a whole. Further, especially for the tail fin arranged at the stern, since the propulsion device is also installed at the stern, it is required to be extremely lightweight in terms of the weight balance of the entire body. Further, in the case of the solid structure, when the soft airship is huge, there are restrictions in terms of transportation and assembly, and it is almost impossible to transport the finished product on the ground. If it can be disassembled so that it can be transported,
It will be heavier and the stratospheric platform will not work.

In order to deal with such a problem, it is effective to use a lightweight pressurizing membrane structure wing and attach it to a soft airship composed of air sacs. The fixation of the membrane structure blade becomes unstable and the pressure membrane structure blade may bend from its root due to the disturbance of the air flow.To prevent this, if the pressure membrane structure blade is fixed by tensioning the wire, , The aerodynamic performance will be significantly impaired.

[0005]

DISCLOSURE OF THE INVENTION The present invention proposes a support mechanism of a lightweight pressure membrane structure blade for solving such a problem, and its technical problem is basically a gas. It is an object of the present invention to provide a support mechanism of a lightweight membrane structure wing for stably attaching the lightweight pressure membrane structure wing, which is light-weight and can secure rigidity by encapsulation, to a hull of a soft airship composed of only air sacs.

[0006]

In order to solve the above-mentioned problems, the support mechanism of the lightweight pressure membrane structure wing in the soft airship of the present invention has a gas-barrier film material stretched in a high-strength fiber base cloth. A lightweight pressure membrane structure wing skeleton of a soft airship is constructed by arranging and connecting multiple pressure beams that are made of a lightweight membrane material and that contain gas to secure their rigidity inside are arranged substantially parallel to each other. Then, a rib having a wing shape that fits in the valley between the connected pressure beams and conforms to the outer surface of the blade is attached between the beams, and the outer thin film is bonded along the rib and the outer peripheral tangent of the pressure beam. By forming a smooth outer shape of the lightweight pressure membrane structure wing, and abutting the blade root side of the plurality of the pressure membrane structure wings to the outside of the air bag of the hull, the plurality of pressure film structure Oppose all or part of the root of the pressure beam on the wing A supporting beam structure is configured by the inboard pressure beams each having a facing portion, and each facing portion of the supporting beam structure faces the root portion of the pressing beam in the pressure membrane structure wing so that the hull is hulled. Placed in the air sacs of
The root portion of the pressure beam in the pressure membrane structure blade and the facing portion of the supporting beam structure facing the root portion of the pressure membrane structure are airtightly coupled to each other by a fastening member via a thin jacket film of the hull, whereby the pressure membrane is formed. It is characterized by integrating the structural wing and the hull.

In the above-mentioned support mechanism for the lightweight pressure membrane structure blade, the pressure gas for suppressing the fluttering of the envelope thin film is enclosed in the space between the envelope thin film forming the outer shape of the blade and the pressure beam. Alternatively, the pressure beam can be filled with helium to enhance buoyancy. Further, in the above-mentioned support mechanism for the pressure membrane structure blade, the internal pressure of the supporting beam structure can be increased to such an extent that it has rigidity for holding the pressure membrane structure blade. The lightweight pressure membrane structure wing is generally attached to the stern of a hull made of air sacs and used as a tail of an airship, but it can be attached to any position of an airship and used as a wing for any purpose. it can. When it is used as the tail, the air sac is provided in the stern independent of the other parts of the hull, and the internal pressure is increased to such an extent that it has a rigidity for holding the pressure membrane structure wing and the propulsion unit of the stern You can

When arranging the movable blade for attitude control at the trailing edge of the pressure membrane structure blade, the movable blade is attached to the one surface of the pressure membrane structure blade at the connecting portion with the pressure film structure blade. To the other side of the movable blade through the space between the connecting surfaces of the two, and then to the flexible connecting piece that is joined to the movable blade there, and through the other surface of the blade through the connecting surface between the two. It is suitable to swingably connect the movable blade by alternately arranging the flexible connecting pieces extending to one surface side of the movable blade and joined to the movable blade there.

The lightweight pressure membrane structure wing of a soft airship having the above-mentioned structure forms a pressure beam by a lightweight membrane material composed of a high-strength fiber base cloth and a gas barrier membrane material, and secures rigidity therein. Gas is filled in, and a plurality of the pressure beams are arranged in parallel with each other and connected to form the skeleton of the wing, and then the outer edge of the rib provided between them and the outer periphery of the pressure beam. The outer shape of the blade is formed by tensioning the outer thin film along the tangent portion. As a result, an ultra-lightweight wing that can be applied to a giant airship for staying in the stratosphere is constructed as one with high aerodynamic performance, and in addition, a movable wing for attitude control attached to the pressurized membrane structure wing is included. Thus, the compact and foldable membrane structure can be easily manufactured and transported.

Further, the pressure beam has its blade root side abutted against the air sacs in the hull of the soft airship, while the air sacs of the hull are provided with facing portions facing the roots of the pressure beams. A supporting beam structure having a pressure beam inside the hull is disposed, and each facing portion of the beam structure faces the root of the pressure beam in the pressure membrane structure blade, and Adopting a wing support mechanism that airtightly connects the root part and the facing part of the supporting beam structure facing it with the fastening member via the jacket thin film of the hull, and the tension wire for fixing the wing is used. Since the wing is stably fixed to the hull without being stretched, it is effective in reducing the weight of the airship and improving the aerodynamic performance. Furthermore, since the simple structure of connecting the pressure beam in the pressure membrane structure wing and the supporting beam structure inside the hull is adopted,
The possibility of helium leakage is minimized, and it is also effective in maintaining the airtightness of the hull air bag.

[0011]

1 and 2 show a structural example of a support mechanism for a lightweight pressurized membrane structure wing of a flexible airship according to the present invention. The lightweight pressure membrane structure wing 1 is suitable for use in a huge soft airship to be retained in the stratosphere, and a plurality of hollow cylindrical pressure beams 2 having a double membrane structure are arranged substantially parallel to each other. The skeleton of the wing is constructed by sequentially connecting in a surface contact state by pressure contact. The pressure beam 2 is made of a lightweight membrane material formed by providing a tube 2b made of a gas barrier membrane material inside a shape-retaining tube 2a made of a lightweight and high-strength fiber base cloth, and the inside of the tube 2b. Further, a gas for ensuring the rigidity of the pressure beam 2 is enclosed.

The pressure beam 2 is preferably constructed by laminating a gas barrier film material (tube 2b) on the inner surface of the lightweight and high-strength base cloth constituting the shape-retaining cylinder 2a. The tube 2b may be housed in a stacked state in the shaped tube 2a. That is, the pressure beam 2
The light-weight membrane material constituting the above-mentioned material may have the strength required to secure the rigidity by enclosing the pressurized gas with the strong fiber base cloth, and may have a sufficient gas barrier property. In the synthetic resin system, ethylene vinyl alcohol resin is most suitable as the gas barrier film material forming the tube 2b, but other lightweight synthetic resin film materials having high gas barrier properties or film materials made of other materials are used. Can be used.

As shown in FIGS. 1 and 2, the pressure beam 2 forms a skeleton shape of a blade by arranging and connecting a plurality of the pressure beams 2, and in this case, a cylindrical shape is used. Each of the pressure beams 2 to be formed is arranged in a state of being directed from the blade root side to the blade tip side, and a cross-sectional area of the blade root side is made larger than that of the blade tip side as necessary, and a plurality of different maximum diameters are provided. The pressurizing beams 2 are successively connected so as to have a larger diameter or a smaller diameter, and a necessary number of the pressing beams 2 are arranged so as to finally form a smooth blade surface.

In the valley between the connected pressure beams 2,
A triangular rib 3 formed of a film material, which fits the shape of the valley and has an outer edge portion conforming to the outer surface of the blade,
The pressure beam 2 is attached in a plurality of stages in the length direction. The material of the rib 3 is not limited to the film material, and a lightweight material such as foamed resin may be used. Further, along with the outer edge portion of the rib 3 and the outer circumferential tangent portion of the pressure beam 2, the outer thin film 4 forming the outermost surface of the blade is stretched, thereby forming the outer shape of the blade. With this configuration and forming the outer shape of the blade into a smooth surface, the resistance force of the wind acting on the blade can be sufficiently reduced.

The blade 1 described above is a shape-retaining tube 2 for the pressure beam 2.
a, a tube 2b having a gas barrier property to be loaded into the shape-retaining tube 2a, and a three-layer structure of the outermost thin film 4 of the outer layer, the trial production by the present inventors shows that The weight is about 800 g / m ^2, and the hard structure using conventional honeycomb material is about 3000 g / m 2.
^Since it is assumed to be ^2, it can be seen that it can be constructed extremely lightweight. Further, the internal pressure applied to the pressure beam 2 formed by the above-described film structure is a difference from the ambient external pressure in the retention area of the airship, and the internal pressure is sufficiently small in the stratosphere where the air density is 1/20. As such, it is clear that the weight efficiency of the structure outweighs the rigid structure blades.

FIGS. 3A and 4 show that the lightweight pressure membrane structure wing 1 formed by the pressure beam 2 is attached to the stern of the hull 10 of an airship composed of air sacs, on four sides of the stern of the airship to form a tail wing of the airship. It shows the case of using as. Note that, as described above, the above-mentioned blade is not necessarily limited to the case of being used as a tail blade as shown in the drawing. When attaching the wing 1 to the hull 10, the wing root sides of the plurality of pressure film structure wings 1 are brought into contact with the outside of the air bag of the hull 10,
On the other hand, in the air sacs of the hull, a support is formed by connecting inboard pressure beams 14 each having a facing part facing a root part of a part of the pressure beam 2 in the plurality of pressure film structure wings 1. Beam structure 13 for supporting beam structure 1 for supporting
The facing portions of 3 are arranged so as to face the root portion of the pressure beam 2 in the pressure membrane structure blade 1. When a plurality of inboard pressure beams 14 forming the supporting beam structure 13 are adjacent to each other, it is desirable to appropriately connect them by a fixing member 15.

Then, with the root portion of the pressure beam 2 in the pressure film structure blade 1 and the facing portion of the supporting beam structure 13 facing the root portion facing each other, the outer thin film 4 of the blade 1 is placed.
The reinforcing member 16 connected to the root of the ship by sticking or the like and the reinforcing member 17 connected to the periphery of the facing portion of the inboard pressure beam 14 by sticking or the like are joined via the outer thin film 12 of the hull 10. By connecting them airtightly via the jacket thin film 12 of the hull 10 using the bolts or the fastening members 18 corresponding thereto, the pressure membrane structure wing 1 and the hull 10 are integrated. A sealant or the like can be used for the penetrating portion of the fastening member 18 in order to keep airtightness. As the reinforcing members 16 and 17, it is desirable to use the same film material as the base cloth, but other materials can also be used. It should be noted that by installing the facing portion of the pressure beam 14 inside the ship so as to face the root portion of a part of the pressure beam 2 in the pressure membrane structure blade 1, the pressure inside the ship facing the root portion of the pressure beam 2 can be increased. In the portion where the facing portion of the beam 14 does not exist, the reinforcing member 1
6 may be connected to the outer skin film 12 of the hull 10 by sticking or other suitable means.

FIG. 3B shows a case where the pressure membrane structure blade 1 is attached to three sides of the hull. In this case, the inboard pressure beam 14a is combined with the rod-shaped beam in three directions. It can be shaped like When there are only two pressure membrane structure blades 1 facing each other, the facing portions of the pressure beam inside the ship should be opposed to the roots of all or part of the pressure beams in the two pressure membrane structure blades 1. , Just connect them.

At the stern of the hull 10 including the blade root attachment portion, an independent air bag 11a is provided at that portion to increase the internal pressure, or multiple air bags 11a and 11b are provided to increase the internal pressure stepwise. The hull can have rigidity for supporting the wings and rigidity for mounting the propulsion unit at the stern, but the rigidity of the hull 10 at the blade root mounting portion can be increased by other means.

On the other hand, in the above lightweight pressure membrane structure blade,
The outer thin film 4 forming the outer shape of the blade 1 is provided with a gas barrier property, and fluttering of the outer thin film 4 due to an external air flow is suppressed in the space between the outer thin film 4 and the pressure beam 2. Air or a pressure gas such as helium can be enclosed. Further, the pressurized gas filled in the pressurized beam 2 may be air, but it may be filled with helium to reinforce the buoyancy of the airship.

As can be seen from FIGS. 4 and 5, the blade 1
The movable blade 21 formed by connecting a plurality of pressure beams 22 to the end of the blade 1 in the same manner as described above is joined to one surface of the blade 1 at those connecting portions, and then the movable blade is passed through between the connecting surfaces thereof. 21 of the flexible connecting piece 23a that extends to the other surface side of the movable blade and is joined to the other surface of the blade 1 and then extends to the one surface side of the movable blade 21 through the connecting surface between the two, and moves there. Flexible connecting piece 23b joined to the wing
The movable blade 21 is swingably connected to the blade 1 by alternately arranging and along the connecting portions of both.
The flexible connecting pieces 23a and 23b are made of the same material as the outer thin film, and are fixed to the outer thin film 4 of the blade and the surfaces of the movable blades 21 by means such as adhesion.

The lightweight pressure membrane wing 1 having the above structure is
The pressure beam 2 is formed by a lightweight film material composed of a high-strength fiber base cloth and a gas barrier film material, and a plurality of the pressure beams 2 are connected to form a skeleton of a wing, and then, between them. The outer shape of the wing 1 is formed by tensioning the outer thin film 4 along the outer edge of the rib 3 and the outer circumferential tangent of the pressure beam 2, and thus the outer shape of the wing 1 is also formed, which makes it possible for a giant airship for staying in the stratosphere. The applicable ultra-lightweight wing can be configured to have high aerodynamic performance, and the membrane structure that can be folded compactly makes it possible to easily manufacture and transport even a huge structure. Can be configured as one.

The pressure beam 2 has its blade root side abutted against the air sacs of the hull 10, while the air sacs of the hull are provided with facing portions facing the roots of the pressure beams 2, respectively. The supporting beam structure 13 having the pressure beam 14 inside the ship is disposed, and the facing portions of the supporting beam structure 13 are faced to the root portions of the pressure beam 2 in the pressure film structure blade 1. In the wing support mechanism, the root portion of the pressure beam 2 and the facing portion of the supporting beam structure 13 opposed thereto are airtightly coupled with the fastening member 18 via the outer thin film 12 of the hull 10, Since the wing is stably fixed to the hull without tensioning the wire for fixing the wing 1, it is effective for reducing the weight of the airship and improving the aerodynamic performance. Further, the pressure beam 2 in the pressure film structure wing 1 and the supporting beam structure 13 in the hull 10
Since the simple structure of connecting with and is adopted, the possibility of helium leakage is minimized, and it is also effective in maintaining the airtightness of the hull air sacs.

[0024]

According to the support mechanism for the lightweight pressure membrane structure wing in the soft airship of the present invention described in detail above, the rigidity of the wing can be secured by enclosing the gas, and the hull of the soft airship can be secured. So that it can be stably attached to
In addition, it is possible to provide a lightweight pressure membrane structure wing that keeps the air sac of the hull airtight, and a wing that is rigid by being attached to the hull by a membrane structure that can fold the lightweight pressure membrane structure wing compactly and then pressurizing. Since the shape can be configured, it becomes possible to easily manufacture and transport the shape.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a lightweight pressure membrane structure blade according to the present invention.

FIG. 2 is a horizontal sectional view of the embodiment.

FIG. 3A is a cross-sectional view of a stern part of a soft airship provided with the above lightweight pressure-membrane wing, and FIG. 3B is a cross-sectional view of a stern part showing another structural example.

FIG. 4 is a partial side view of the same.

FIG. 5 is a partial cross-sectional view showing a configuration of a connecting portion between a lightweight pressure membrane blade and a movable blade.

[Explanation of symbols]

1 Lightweight pressure membrane structure wing 2 Pressurized beam 2a Shape retention tube 2b tube 3 ribs 4 coat thin film 10 hull 11a, 11b Air sacs 12 coat thin film 13 Support beam structure 14,14a Pressurized beam in the hull 15 Fixing member 16,17 Reinforcement member 18 Fastening members 21 movable wings 22 Pressurized beam 23a, 23b Flexible connecting piece

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroshi Sugimoto 1-7-15 Uehara, Shibuya-ku, Tokyo Within Skypia Co., Ltd. (58) Fields investigated (Int.Cl. ⁷ , DB name) B64B 1/04 B64B 1/42 B64B 1/58

Claims (6)

(57) [Claims] 1. A plurality of pressure beams, each of which is made of a lightweight membrane material in which a gas barrier membrane material is stretched in a high-strength fiber base cloth, and in which a gas for enclosing its rigidity is enclosed, is substantially formed. By arranging them in parallel and connecting them, the skeleton of the lightweight pressure membrane structure wing of a soft airship is constructed, and the ribs that fit in the valleys between the connected pressure beams and have the airfoil that conforms to the outer surface of the wing are formed between the beams. The outer thin film is joined along the rib and the outer peripheral tangent of the pressure beam to form a smooth outer shape of the lightweight pressure film structure wing. By abutting the blade root side of the pressure membrane structure blade, and by the inboard hull pressure beam provided with the facing portion facing the root part of all or part of the pressure beam in the plurality of pressure film structure blades, Compose the supporting beam structure,
The facing portions of the supporting beam structure are arranged in the air sac of the hull so as to face the roots of the pressure beam in the pressure membrane structure blade, and the root portion of the pressure beam in the pressure membrane structure blade, The pressing membrane structure wing and the hull are integrated by air-tightly connecting the facing portion of the supporting beam structure facing it with the fastening member via the outer thin film of the hull. Support Mechanism for Lightweight Pressurized Membrane Wing on Flexible Airship. 2. A pressure gas for suppressing fluttering of the envelope thin film is enclosed in a space between the envelope thin film forming the outer shape of the blade and the pressure beam. Support Mechanism for Lightweight Pressurized Membrane Structure Wing in Japanese Flexible Airship. 3. A support mechanism for a lightweight pressure membrane structure blade according to claim 1, wherein helium is filled in the pressure beam of the pressure membrane structure blade to reinforce buoyancy. . 4. The soft airship according to claim 1, wherein the internal pressure of the supporting beam structure is increased to such a degree that the supporting beam structure has a rigidity for holding the pressure membrane structure wing. Support mechanism for lightweight pressure membrane structure wing. 5. A movable blade is provided at a trailing edge of the pressure membrane structure blade, and at their connecting portions, the movable blade is joined to one surface of the pressure membrane structure blade, and from there, the movable blade is passed through between the connecting surfaces of both. The flexible connecting piece that extends to the plane side and is joined to the movable blade there, and the other side of the pressure membrane structure blade that is joined to extend from the flexible blade to the one side of the movable blade, where 5. The lightweight pressure membrane for a soft airship according to claim 1, wherein the movable wings are swingably connected by alternately arranging the flexible connecting pieces to be joined. Structural wing support mechanism. 6. A pressurizing membrane structure wing is attached to the stern of a hull made of air sac, which is used as a tail of an airship, and an air sac independent of the other parts of the hull is provided in the stern's hull, and its internal pressure is controlled. The support for a lightweight pressure membrane structure wing in a flexible airship according to any one of claims 1 to 5, characterized in that the pressure membrane structure wing and the stern propulsion unit are increased in rigidity to hold them. mechanism.