JP2020147285A - Captive balloon - Google Patents

Abstract

To provide a captive balloon which can stably support a balloon during takeoff and landing with a landing base.SOLUTION: A captive balloon has a balloon including a resin-made bag body forming a flat shape when its inside is filled with gas with a first inner pressure, a plurality of mooring ropes whose one ends are connected to the outer surface of the balloon, and a landing base on which the balloon is landed, in which the landing base includes a receiving part that is a resin-made bag body forming a torus shape when its inside is filled with gas with a second inner pressure lower than the first inner pressure, a contact part that is arranged on the outer surface of the receiving part and with which the balloon is brought into contact when the balloon is landed on the landing base, and a leg part that has one end connected to the receiving part and is a plurality of resin-made bag bodies forming a pillar shape when its inside is filled with gas.SELECTED DRAWING: Figure 1

Description

The present invention relates to a moored balloon that supports the balloon by a landing platform when the balloon connected to the mooring line takes off and landing.

When the operation of the base station is stopped due to a disaster or the like, a communication failure occurs in which communication of a mobile terminal such as a mobile phone becomes impossible in the area covered by the stopped base station. When a communication failure occurs, it is required to immediately recover the base station that has stopped operating to eliminate the communication failure. However, when the base station collapses, it may be difficult to restore the function of the base station immediately.

On the other hand, there is known a balloon that can be moored at a predetermined position in the sky by connecting a mooring line. Such balloons are used for wind speed surveys in the sky when constructing large structures such as wind power generators, vertical distribution surveys of wind speed and temperature, and video shooting to confirm the damage situation in the event of a disaster. It is known to be used. By attaching a device having a base station function to such a balloon and mooring it in the sky, it is possible to install a temporary base station that covers an area larger than the temporary base station installed on the ground.

When mooring a balloon with a mooring line, it is important to maintain an appropriate posture even in the event of strong winds. For example, Patent Document 1 has a rope length adjusting unit that adjusts the length of any of the mooring ropes according to the wind speed of the air flow, and the rope length adjusting unit adjusts the length of the mooring rope according to the wind speed of the air flow. Balloons that can be adjusted to keep the tilt constant are described.

Japanese Unexamined Patent Publication No. 2016-002973

Balloons moored by mooring lines take off and land near the surface of the earth. At the time of takeoff and landing of the balloon, various operations on the balloon such as maintaining the attitude of the balloon, injecting or discharging gas into the balloon, and attaching equipment to the balloon are performed by the operator. If the balloon's attitude is unstable during takeoff and landing, the efficiency of work by the operator will decrease.

Therefore, an object of the present invention is to provide a moored balloon that can stably support a balloon at the time of takeoff and landing by a landing platform.

The first moored balloon according to the present invention includes a balloon including a resin bag that forms a flat shape when the inside is filled with gas by the first internal pressure, and a plurality of balloons having one end connected to the outer surface of the balloon. The landing platform is a resin bag that forms a torus shape when the inside is filled with gas at a second internal pressure lower than the first internal pressure, which has a mooring line and a landing platform on which the balloon lands. Multiple receiving parts, contact parts that are arranged on the outer surface of the receiving part and that the balloon contacts when the balloon lands on the landing platform, and one end that is connected to the receiving part and filled with gas to form a pillar shape. It is characterized by including a leg portion which is a resin bag body of the above.

The second moored balloon according to the present invention includes a resin bag that forms a flat shape when the inside is filled with gas, and has a balloon diameter of D1 which is the diameter of the flat cross section in the horizontal direction. , Each of which has a plurality of mooring lines connected to the outer surface of the balloon and a landing platform on which the balloon lands, and the landing platform is made of resin that forms a torus shape when the inside is filled with gas. A receiving portion that is a bag body and in which the inner diameter D3 of a large circle in the torus shape satisfies the relationship of D1 × 0.68 ≦ D3 ≦ D1 and one end is connected to the receiving portion, and the inside is filled with gas to form a pillar shape. It is characterized by including a leg portion which is a plurality of resin bag bodies.

The third mooring balloon landing platform according to the present invention includes a balloon containing a resin bag that forms a flat shape when the inside is filled with gas, and a plurality of moorings in which one end of each is connected to the outer surface of the balloon. It has a rope and a landing platform on which the balloon lands, and the landing platform has a receiving section that is a resin bag that forms a torus shape when the receiving section air chamber is filled with gas, and one end of the receiving section. A plurality of legs, which are connected and are resin bag bodies which form a pillar shape when filled with gas, and the legs each have a first leg air chamber filled with gas. A plurality of second legs each having a first leg and a gas-filled second leg air chamber, and the second leg air chamber is from the receiving air chamber and the first leg air chamber. It is characterized by including a second leg portion that is separated and is connected to the receiving portion at positions adjacent to each other in the receiving portion.

The fourth mooring balloon landing platform according to the present invention includes a balloon containing a resin bag that forms a flat shape when the inside is filled with gas, and a plurality of moorings in which one end of each is connected to the outer surface of the balloon. It has a rope and a landing platform on which the balloon lands, and the landing platform is a resin bag that forms a torus shape when the inside is filled with gas, and the inner diameter of the large circle of the torus shape is D3. A certain receiving part and a plurality of resin bag bodies having one end connected to the receiving part and filled with gas to form a pillar shape. The balloon is placed on the outer surface of the receiving part from the other end, which is not one end, and the balloon lands. It is characterized by including a leg portion in which the height H to the contact portion with which the balloon contacts when landing on the table satisfies H <D3 / 2.

The fifth mooring balloon landing platform according to the present invention includes a balloon containing a resin bag that forms a flat shape when the inside is filled with gas, and a plurality of moorings in which one end of each is connected to the outer surface of the balloon. It has a rope and a landing platform on which the balloon lands, and the landing platform is a resin bag that forms a torus shape when the inside is filled with gas, and the diameter d of the small circle in the torus shape is A receiving portion that satisfies the relationship of d <2 / π (π = circumference ratio), and a leg portion that is a plurality of resin bag bodies having one end connected to the receiving portion and filled with gas to form a pillar shape. , It is characterized in that.

According to the present invention, it is possible to provide a moored balloon that can stably support a balloon at the time of takeoff and landing by a landing platform.

It is a schematic diagram which shows the outline of the mooring balloon 1. FIG. 5 is a cross-sectional view taken along the line XX'in FIG. 1 when the landing platform supports the balloon by contact. It is a schematic diagram explaining the contact surface between a receiving part and a balloon in the landing table of 1st Embodiment. It is a cross-sectional view of XX'in FIG. 1 when the balloon which receives a crosswind in the mooring balloon of the 1st Embodiment is supported by a landing platform. FIG. 5 is a cross-sectional view taken along the line XX'in FIG. 1 when the balloon is filled with gas inside the landing platform in the moored balloon of the second embodiment. (A) is a diagram showing a first usage mode of the landing platform in the mooring balloon of the third embodiment, and (b) is a diagram showing a second usage mode of the landing platform in the mooring balloon of the third embodiment. It is a figure which shows the positional relationship between the landing table and the balloon in the mooring balloon of 4th Embodiment. It is a figure which shows the positional relationship between the landing table and the balloon in the mooring balloon of the 5th Embodiment.

Hereinafter, the mooring balloon will be described in detail with reference to the drawings. However, it should be understood that the present invention is not limited to the drawings or embodiments described below.

The mooring balloon according to the embodiment described in the present specification includes a balloon having a substantially circular shape having a diameter of 3 m or more and 9 m or less when filled with gas and viewed from above, and a landing platform that supports the balloon when taking off and landing. Be prepared. The balloon is moored from the landing platform by a mooring line. The landing platform has a receiving portion that contacts and holds the balloon, and a plurality of legs that are connected to the receiving portion at one end and arranged on the installation surface at the other end. The balloon to which the mooring rope is connected to the surface is fixed by the four-sided roller arranged on the installation surface near the center of the receiving portion. The landing platform limits the range of movement of the balloon connected to the mooring line and stabilizes the attitude of the balloon during takeoff and landing.

FIG. 1 is a schematic view showing an outline of the mooring balloon 1.

The mooring balloon 1 has a balloon 10, a mooring line 11, a landing platform 13, a four-sided roller 14, and a take-up device 20.

The balloon 10 has a balloon main body 101, a payload dome 102, and a scoop 103. The balloon main body 101 has an outer bag made of a solid, lightweight and airtight material such as synthetic fiber, and a helium storage bag contained in the outer bag and filled with helium gas. The balloon 10 has a flat spherical shape when the helium storage bag, which is a resin bag, is filled with helium gas. The payload dome 102 is a bottomed cylindrical member, and is arranged so that the bottom portion is in contact with the balloon body portion 101. Equipment such as a relay station is arranged in the recess of the payload dome 102. The relay station has a relay antenna (not shown) and an antenna for a mobile station, and forms a communication network with a mobile terminal located in a communicable area. The scoop 103, also called a posture stabilizing film, is a film material having a flexible surface formed of polyester woven so as to allow air to pass through from one surface to the other surface, and is a film material having a flexible surface of the balloon body 101. It is joined to the outer bag.

The mooring line 11 has a main mooring line 110, a first sub mooring line 111, a second sub mooring line 112, a third sub mooring line 113, and a nodule portion 114. In one example, the total length of the mooring line 11 is about 100 m. One end of the main mooring line 110 is connected to the first sub mooring line 111, the second sub mooring line 112, and the third sub mooring line 113 via a knot 114. The other ends of the first sub-mooring line 111, the second sub-mooring line 112, and the third sub-mooring line 113 are connected to the outer surface of the balloon body 101 of the balloon 10.

The landing platform 13 has a receiving portion 131 and a leg portion 132. The receiving portion 131 is a resin bag body having a torus shape that supports the balloon 10 when the balloon 10 lands. The leg portion 132 is a resin bag body having a pillar shape, one end of which is connected to the receiving portion and the other end of which is arranged on the installation surface.

The four-sided roller 14 has four rollers arranged so as to form a substantially square when viewed from above. The inside surrounded by four rollers forms a cord passage. The four-sided roller 14 provides when the mooring line 11 is unwound from the take-up device 20 as the balloon 10 rises, and when the mooring line 11 is taken up by the take-up device 20 as the balloon 10 descends. The mooring rope 11 passing through the rope passage port is slidably guided.

The first roller 15 and the second roller 16 have a rotatable columnar guide portion. When the mooring line 11 is unwound from the take-up device 20 as the balloon 10 rises, and when the mooring line 11 is taken up by the take-up device 20 as the balloon 10 descends, the guide unit provides the mooring line. It rotates with the movement of 11. The first roller 15 and the second roller 16 are arranged between the four-sided roller 14 and the take-up device 20 to guide the mooring line 11 in a desired direction.

The take-up device 20 has a motor and a drum. A mooring line 11 is fixed to the drum. The motor rotates in a first direction or a second direction opposite to the first direction. The drum unwinds the mooring line 11 as the motor rotates in the first direction, and winds up the mooring line 11 as the motor rotates in the second direction.

FIG. 2 is a cross-sectional view taken along the line XX'in FIG. 1 when the landing platform supports the balloon by contact.

The balloon 10 is supported by contact with the receiving portion 131 of the landing platform 13. The balloon 10 has a flat spherical shape when filled with gas. D1 is the balloon diameter which is the diameter of the balloon 10 when viewed from above. Also, D4 is the height of the balloon. In the embodiments described herein, the balloon diameter D1 is 3 m or more and 9 m or less. Further, in the embodiment described in the present specification, the height D4 of the balloon 10 is 0.7 times the balloon diameter D1, and the flatness of the balloon 10 is 0.7.

The receiving portion 131 of the landing platform 13 comes into contact with the balloon 10 at the position 131a. The diameter of the receiving portion 131 of the landing platform 13 in the XX'cross-sectional view is d, which corresponds to the diameter of the small circle in the torus shape of the receiving portion 131. The distance between the left end of the circle on the left side of the receiving portion 131 and the right end of the circle on the right side is D2, which corresponds to the outer diameter of the great circle in the torus shape of the receiving portion 131. The distance between the right end of the circle on the left side of the receiving portion 131 and the left end of the circle on the right side is D3, which corresponds to the inner diameter of the great circle in the torus shape of the receiving portion 131.

The leg portion 132 is connected to the receiving portion 131 at one end 132a and is arranged on the installation surface at the other end 132b. The height from the other end 132b of the leg portion 132 to the position 131a of the receiving portion 131 is H.

The winding device 20 winds the mooring line 11 by a force N. The force N is 300 kgf to 1000 kgf. Since the direction of the force N is changed by the four-sided roller 14, the mooring line 11 pulls the balloon 10 downward by the force N. Therefore, the balloon 10 comes into contact with the receiving portion 131 of the landing platform 13 with a force N.

FIG. 3 is a schematic view illustrating a contact surface with a balloon at a receiving portion of the landing platform of the first embodiment. In the description of each embodiment, "-1" in the case of the first embodiment and "-2" in the case of the second embodiment are added to the end of the reference numerals used in the description of each part in FIGS. 1 and 2. , "-3" in the case of the third embodiment and "-4" in the case of the fourth embodiment will be described.

In the moored balloon 1-1 of the first embodiment, the landing platform 13-1 stably supports the balloon 10-1 by contact.

In the moored balloon 1-1 of the first embodiment, the receiving portion 131-1 of the landing platform 13-1 supports the balloon 10-1 by contact. FIG. 3 is a schematic view of the surface of the receiving portion 131-1 in contact with the balloon 10-1 as viewed from the upper surface (the side of the balloon 10-1). In FIG. 3, the upper surface of the receiving portion 131-1 is shown through the balloon 10-1 shown by the broken line. The receiving portion 131-1 comes into contact with the balloon main body portion 101-1 at the contact portion 131-1b. The contact portion 131-1b is arranged on the outer surface of the receiving portion 131-1 and comes into contact with the balloon 10-1 when the balloon 10-1 lands on the landing platform 13-1. In the present embodiment, the contact portion 131-1b is a concentric circle having a width W. The shape of the contact portion 131-1b is not limited to the concentric circles, and may be, for example, a plurality of regions arranged on the circumference of the concentric circles.

In general, the static friction force between objects does not depend on the contact area. However, when the object is an elastic body, the elastic body is deformed and comes into close contact with the other object, so that a static friction force corresponding to the contact area is generated. In the present embodiment, since the balloon 10-1 and the receiving portion 131-1 are both a bag body filled with gas and an elastic body, a larger static friction force is generated as the area of the contact portion 131-1b increases. .. When a large static friction force is generated between the balloon 10-1 and the receiving portion 131-1, the receiving portion 131-1 can stably support the balloon 10-1.

The width W of the contact portion 131-1b changes depending on the internal pressure of the balloon 10-1 and the receiving portion 131-1 and the force N that brings the balloon 10-1 into contact with the receiving portion 131-1. That is, when the internal pressure of the balloon 10-1 or the receiving portion 131-1 is decreased or the force N is increased, the width W becomes large within a predetermined range.

When the internal pressure of the balloon 10-1 is the first internal pressure and the internal pressure of the receiving portion 131-1 is the second internal pressure lower than the first internal pressure, the balloon 10-1 receives when it comes into contact with the receiving portion 131-1. The portion 131-1 is deformed along the protruding outer shape of the balloon 10-1. Therefore, the width W can be increased by making the internal pressure of the receiving portion 131-1 smaller than the internal pressure of the balloon 10-1.

Since the balloon 10-1 is operated, the balloon 10-1 is filled with a gas such as helium at a first internal pressure of about atmospheric pressure +0.3 to 0.6 kPa. When the first internal pressure is lowered, sufficient buoyancy is not generated, which hinders the operation of balloon 10-1. Therefore, it is not preferable to reduce the first internal pressure to less than atmospheric pressure + 0.3 kPa in order to increase the width W.

On the other hand, the receiving portion 131-1 is filled with a gas such as air at a second internal pressure in order to stabilize its shape. When the second internal pressure is lowered to less than 0.3 kPa, the stability of the shape of the receiving portion 131-1 is lowered to some extent, but it does not affect the operation of the balloon 10-1.

Therefore, by setting the first internal pressure to 0.3 kPa or more and the second internal pressure to less than 0.3 kPa, the width W of the contact portion 131-1b is set to an appropriate size without interfering with the operation of the balloon 10-1. be able to.

At this time, the leg portion 132-1 is filled at atmospheric pressure + 10 kPa.

The force N can be increased by increasing the winding force of the winding device 20-1. However, in order to increase the winding force of the winding device 20-1, it is necessary to replace the winding device 20-1 with a larger one, which is not easy. Further, the force N can be increased by attaching a weight to the balloon 10-1 supported by the receiving portion 131-1, but it takes time and effort to attach the weight. Further, the force N cannot be increased from the time when the balloon 10-1 is supported by the receiving portion 131-1 until the weight is attached.

In the present embodiment, the material of the outer surface of the balloon 10-1 and the material of the contact portion 131-1b are both nylon. As described above, the material of the contact portion 131-1b may be the same as the material of the outer surface of the balloon 10-1.

Further, the material of the contact portion 131-1b may be a material having a coefficient of static friction with the material of the outer surface of the balloon 10-1 larger than that of the material of the surface of the balloon 10-1. For example, when the material of the surface of the balloon 10-1 is nylon, rubber, which is a material having a coefficient of static friction with nylon larger than that of nylon, may be used as the material of the contact portion 131-1b. By using rubber as the material for the contact portion 131-1b, a larger static friction force is generated between the balloon 10-1 and the receiving portion 131-1, so that the landing platform 13-1 makes the balloon 10-1 more stable. Can be supported.

Further, the landing platform 13-1 is preferably formed in an appropriate size in order to stably support the balloon 10-1. Specifically, if the torus-shaped outer diameter D2 of the receiving portion 131-1 is too small with respect to the balloon diameter D1, the landing platform 13-1 cannot stably support the balloon 10-1. Further, if the torus-shaped outer diameter D2 of the receiving portion 131-1 is larger than the balloon diameter D1, the landing platform 13-1 cannot support the balloon 10-1, which is not preferable from the viewpoint of the portability of the device.

FIG. 4 is a cross-sectional view taken along the line XX'in FIG. 1 when the balloon that receives the crosswind in the moored balloon of the first embodiment is supported by the landing platform.

The balloon 10-1 is pulled downward by the force N near the center in the horizontal cross section by the take-up device 20-1, and is supported by the landing platform 13-1. On the other hand, balloon 10-1 receives a force FW due to a crosswind.

In order to prevent the balloon 10-1 from rolling over with the contact point with the receiving portion 131-1 on the leeward side of the crosswind as a fulcrum, the force N applied near the center is the force FW applied to the windward side of the crosswind. It should be higher.

Crosswind by wind load FW (kgf) is the air density ^{ρ (0.125kgf · s 2 / m} 4), the wind speed V (m / s), the pressure receiving area A (m ^2), the drag coefficient C _D, the following formula It is represented by.

FW = 1/2 x ρ x V ^ 2 x A x C _D

The pressure receiving area is the area of an ellipse having a major axis of D1 and a minor axis of D4, which is a cross section of the balloon 10-1 in the vertical direction. Since the flatness of the balloon 10-1 is 0.7, A = π × 0.5 × D1 × 0.35 × D1 = 0.175 × π × D1 ^ 2 (π = pi).

Drag coefficient C _D of balloon 10-1, since it is ellipsoidal shape, and 0.6.

The mooring balloon 1-1 is required to be able to cope with a crosswind of about 15 m / s.

From the above, the force FW is represented by the following equation by the balloon diameter D1.

FW ≒ 1.48 × π × D1 ^ 2

When the force N applied from the fulcrum to the position of D2 / 2 and the force FW applied to the position of (D1 / 2 + D2 / 2) from the fulcrum are balanced, the following equation holds.

N × D2 / 2 = FW × (D1 / 2 + D2 / 2)

Substituting the FW obtained above into the above equation and rearranging it, the force N is expressed by the following equation by D1.

N≈1.48 × π × D1 ^ 2 × (D1 + D2) / D2

In the present embodiment, the balloon diameter D1 is 3 m to 9 m, and the force N is 300 kgf to 1000 kgf. Here, it is considered that when the balloon diameter D1 is 9 m, a force N of 1000 kgf prevents the balloon 10-1 from rolling over at a crosswind force FW of a wind speed of 15 m / s.

At this time, the ratio of D1 and D2 may be determined so that N = 377 × (D1 + D2) / D2 ≦ 1000 from the above equation. When this equation is rearranged, D2 ≧ 377/623 × D1 ≈ D1 × 0.6. Therefore, it is preferable that D2 ≧ D1 × 0.6 in order to prevent the balloon 10-1 from rolling over due to a crosswind.

That is, in the moored balloon 1-1 of the present embodiment, it is preferable that the balloon diameter D1 and the torus-shaped outer diameter D2 of the receiving portion 131 satisfy the following relationship.

D1 x 0.6 <D2 <D1

FIG. 5 is a cross-sectional view taken along the line XX'in FIG. 1 when the balloon is filled with gas inside the landing platform in the moored balloon of the second embodiment.

In the mooring balloon 1-2 of the second embodiment, the landing platform 13-2 stably supports the balloon 10-2 being filled with gas inside the receiving portion 131-2.

In the second embodiment, the balloon 10-2 is filled with helium while being arranged inside the torus shape of the receiving portion 131-2 of the landing platform 13-2 as shown by the solid line in FIG. When the balloon 10-2 is filled with helium to an internal pressure suitable for operation, the balloon 10-2 has a flat shape having a balloon diameter of D1 as shown by a broken line in FIG.

The balloon 10-2 partially filled with helium shown by the solid line in FIG. 5 is partially floated by the filled helium and becomes unstable. At this time, if there is nothing around the balloon 10-2 to support the balloon 10-2, when the balloon 10-2 receives a crosswind, the balloon 10-2 swings and the helium filling operation is performed. It will be difficult.

The landing platform 13-2 in the mooring balloon 1-2 of the present embodiment has a shape capable of supporting the balloon 10-2 in the helium filling process. Therefore, in the mooring balloon 1-2, the movement of the balloon 10-2 due to the crosswind is restricted by filling the balloon 10-2 with helium inside the landing platform 13-2, and the balloon 10-2 is stably supported. be able to.

On the other hand, since the inner diameter D2 of the great circle in the torus shape of the receiving portion 131-2 is smaller than the balloon diameter D1-2, it is suitable for operation while being arranged inside the torus shape of the receiving portion 131-2. It is not possible to fill the balloon body 101-2 with helium up to the internal pressure.

In the balloon 10-2 of the present embodiment, when the balloon main body 101-2 is filled with about 70% of helium, an excess buoyancy exceeding the weight of the balloon 10-2 is generated, and the balloon becomes stable. Therefore, in the landing platform 13-2 of the present embodiment, the receiving portion 131-2 has a shape in which the balloon 10-2 can be arranged inside the torus shape until the balloon main body portion 101-2 is filled with 70% or more of helium. have.

Assuming that the volume of the balloon 10-2 filled with helium to an internal pressure suitable for operation is V1, V1 is expressed by the following equation.

V1 = 4/3 x π x (D1 / 2) ^ 2 x (D4 / 2)

Let V2 be the volume of the balloon 10-2 filled with helium while being arranged inside the torus shape of the receiving portion 131-2. At this time, in the balloon 10-2, the diameter of the cross section parallel to the installation surface is D3, which is the inner diameter of the torus shape of the receiving portion 131-2, and the height of the balloon 10-is filled with helium to an internal pressure suitable for operation. It is assumed that the height is D4, which is the same as the height of 2. At this time, V2 is expressed by the following equation.

V2 = π × (D3 / 2) ^ 2 × D4

At this time, the helium filling factor V2 / V1 of the balloon 10-2 is expressed by the following formula.

V2 / V1 = (3 × D3 ^ 2) / (2 × D1 ^ 2)

Therefore, in order to make it possible to arrange the balloon 10-2 inside the receiving portion 131-2 when the helium filling factor V2 / V1 is 70% or more, the balloon diameter D1 and the torus-shaped inner diameter D3 have the following relationship. Fulfill.

D3 ≧ D1 × 0.68

On the other hand, when the inner diameter D3 is equal to or larger than the balloon diameter D1, the receiving portion 131-2 cannot support the balloon 10-2. Therefore, in the moored balloon 1-2 of the present embodiment, the balloon diameter D1 and the inner diameter D3 satisfy the following relationship.

D1 × 0.68 ≦ D3 <D1

Further, in order to stably support the balloon 10-2 filled with helium while being arranged inside the torus shape of the receiving portion 131-2, the height H of the receiving portion 131-2 has a helium filling rate. It is preferably ½ or more of the height D4 of the balloon 10-2 at 70%. The height H is arranged on the outer surface of the receiving portion 131-2 from the other end which is not one end connected to the receiving portion 131-2 of the leg portion 132-2, and the balloon 10-2 lands on the landing platform 13-2. It is the height to the contact portion 131-2b with which the balloons 10-2 sometimes come into contact. Assuming that the flatness of the balloon 10-2 filled with helium to an internal pressure suitable for operation is 0.7, the height D4 can be expressed as D4 = D1 × 0.7 using the balloon diameter D1. That is, it is preferable that the height H of the receiving portion 131-2 and the balloon diameter D1 satisfy the following relationship.

H ≧ D1 × 0.35

FIG. 6A is a diagram showing a first usage mode of the landing platform in the mooring balloon of the third embodiment, and FIG. 6B is a diagram showing a second usage mode of the landing platform in the mooring balloon of the third embodiment. It is a figure.

In the mooring balloons 1-3 of the third embodiment, the landing platform 13-3 is arranged on the loading platform 31 provided in the vehicle 30 and comes into contact with the balloons 10-3 having a flat spherical shape when filled with gas. Support by. The landing platform 13-3 of the third embodiment has a shape capable of stably supporting the balloon in various installation environments.

In the landing platform 13-3 of the third embodiment, the receiving portion 131-3 includes a first receiving portion 131-3-1 and a second receiving portion 131-3-2. Further, in the landing platform 13-3, the plurality of legs 132-3 include a plurality of first legs 132-3-1 and a plurality of second legs 132-3-2.

The plurality of second leg portions 132-3-2 are connected to the second receiving portion 131-3-2 at positions adjacent to each other in the second receiving portion 131-3-2. FIG. 6A shows the landing platform 13-3 viewed from the right side of the vehicle 30, but when viewed from the left side of the vehicle 30, the landing platform 13-3 is left and right as shown in FIG. 6A. Appears symmetrically. That is, one of the plurality of second leg portions 132-3-2 is arranged on the right rear side of the vehicle 30, and the other one is arranged on the left rear side of the vehicle 30, and these plurality of second leg portions 132. -3-2 are adjacent to each other. It should be noted that different second legs may be arranged between the second leg 132-3-2 on the right rear side of the vehicle 30 and the second leg 132-3-2 on the left rear, and in this case as well. The plurality of second legs 132-3-2 are adjacent to each other.

The first receiving portion 131-3-1 is filled with gas in the air chamber of the first receiving portion. The second receiving portion 131-3-2 is filled with gas in the air chamber of the second receiving portion. The first leg portion 132-3-1 is filled with gas in the first leg portion air chamber. The second leg portion 132-3-2 is filled with gas in the second leg portion air chamber.

The first receiving air chamber, the second receiving air chamber, the first leg air chamber, and the second leg air chamber are separated from each other. Therefore, the first receiving portion 131-3-1, the second receiving portion 131-3-2, the first leg portion 132-3-1, and the second leg portion 132-3-2 are independently filled with gas. Can be done.

In the first aspect shown in FIG. 6A, the first receiving portion air chamber, the second receiving portion air chamber, the first leg air chamber, and the second leg air chamber are all filled with gas. .. Since the landing platform 13-3 of the first aspect supports the balloon 10-3 at the time of takeoff and landing at a position higher than the loading platform 31 of the vehicle 30, it is arranged in the payload dome 102-3 provided under the balloon 10-3. It is suitable for maintaining the equipment to be used.

In the second aspect shown in FIG. 6B, the first receiving portion air chamber, the second receiving portion air chamber, and the first leg air chamber are filled with gas, and the second leg air chamber is filled with gas. Not filled with gas. As a result, the landing platform 13-3 is grounded to the loading platform 31 of the vehicle 30 by the second receiving portion 131-3-2 and the first leg portion 132-3-1, and the upper surface of the first receiving portion 131-3-1 is reached. Tilts with respect to the loading platform 31. Since the landing platform 13-3 of the second aspect supports the balloon 10-3 at a position lower than that supported by the landing platform 13-3 of the first aspect, it is suitable for working on the side surface of the balloon 10-3. Operations on the side surface of the balloon 10-3 include, for example, attachment / detachment of the mooring line 11-3 to the side surface of the balloon 10-3, attachment / detachment of equipment to the side surface of the balloon 10-3, and the like.

FIG. 7 is a diagram showing the positional relationship between the landing platform and the balloon in the moored balloon of the fourth embodiment.

In the mooring balloons 1-4 of the fourth embodiment, the landing platform 13-4 has a shape in which the mooring lines 11-4 mooring the balloons 10-4 do not interfere with the receiving portion 131-4. When the balloon 10-4 having the scoop 103-4 is moored by the mooring line 11, the mooring angle of the balloon 10-4 is kept within 45 degrees from the zenith. Therefore, the landing platform 13-4 has a structure in which the mooring line 11-4 does not come into contact with the receiving portion 131-4 when the mooring angle from the mooring point (position of the four-sided roller 14-4) is 45 degrees. In FIG. 6, the description of scoop 103-4 is omitted.

When the mooring angle is 45 degrees and the mooring line 11-4 contacts the receiving portion 131-4 having a height H, the inner diameter D3 of the great circle in the torus shape of the receiving portion 131-4 becomes equal to the height H. .. The height H is arranged on the outer surface of the receiving portion 131-4 from the other end which is not one end connected to the receiving portion 131-4 of the leg portion 132-4, and the balloon 10-4 lands on the landing platform 13-4. It is the height to the contact portion 131-4b where the balloons 10-4 sometimes come into contact. That is, the height H is made smaller than the inner diameter D3 so that the mooring line 11-4 and the receiving portion 131-4 do not come into contact with each other. Therefore, the height H of the receiving portion 131-4 and the inner diameter D3 of the great circle in the torus shape of the receiving portion 131-4 satisfy the following relationship.

H <D3 / 2

Further, the inner diameter D3 of the great circle in the torus shape of the receiving portion 131-4 is determined by the outer diameter D2 of the great circle in the torus shape of the receiving portion 131-4 and the diameter d of the small circle in the torus shape of the receiving portion 131-4. It is expressed by the following formula.

D3 = D2-d × 2

The outer diameter D2 of the great circle in the torus shape of the receiving portion 131-4 and the diameter d of the small circle in the torus shape of the receiving portion 131-4 are the balloon diameter D1 and the following in order to stably support the balloon 10-4. It is preferable to have the relationship of.

D2 = D1 x 0.8
d = D1 × 0.07

Therefore, the height H can be expressed as follows by using the torus-shaped outer diameter D2 of the receiving portion 131-4.

H <D2 x 0.4125

When the four-sided roller 14-4 is arranged on the installation surface, the mooring line 11-4 is moored from a position higher than the installation surface by the physical height ΔH of the four-sided roller 14-4. Since the above-mentioned height H is a height that does not include ΔH (from the upper surface of the four-sided roller 14-4), if the actual height of the receiving portion 131-4 from the installation surface is lower than H + ΔH, Sufficient.

For example, the height H of the receiving portion 131-4 having the outer diameter D2 of the great circle of the torus shape is 4 m is H> 0.4125 × 4 = 1.65 (m) according to the above formula. Therefore, if the height of the receiving portion 131-4 is lower than 1.65 m, the receiving portion 131-4 does not come into contact with the mooring line 11-4.

At this time, when the height ΔH of the four-sided roller 14-4 is 20 cm, the height of the receiving portion 131-4 can be increased by 20 cm. Specifically, when the height of the receiving portion 131-4 is lower than 1.85 m, the receiving portion 131-4 does not come into contact with the mooring line 11-4.

FIG. 8 is a diagram showing the positional relationship between the landing platform and the balloon in the moored balloon of the fifth embodiment.

In the moored balloons 1-5 of the fifth embodiment, the landing platform 13-5 has a shape that prevents the balloons 10-5 moored at a low altitude from colliding with the ground. When the balloon 10-5 is moored near the ground, the airflow is likely to be turbulent near the ground, and the balloon 10-5 may be damaged by contact with the ground due to the turbulent airflow. On the other hand, when the balloon 10-5 of the present embodiment receives a crosswind while rising about 1 m from the landing platform 13-5, the scoop 103-5 can convert the crosswind into lift, so that the attitude is stable. .. Therefore, the landing platform 13-5 of the present embodiment has a shape that prevents the balloon 10-5 from colliding with the ground when the balloon 10-5 is moored at a low altitude of 1 m or less.

The minimum feeding amount L is defined as the feeding amount of the mooring line 11-5 when the balloon 10-5 is at the position P1 shown by the broken line in FIG. 8 (when supported by the receiving portion 131-5). When the mooring line 11-5 is extended by the additional extension amount ΔL from this state, the balloon 10-5 rises. If there is no wind at this time, the balloon 10-5 is located at the position P2 in FIG. When a strong crosswind is received while the mooring line 11-5 is extended by L + ΔL, the balloon 10-5 rolls over around the upper part of the receiving portion 131-5, is located at the position P3 in FIG. 8, and comes into contact with the ground. I have something to do.

At this time, the mooring line 11-5 held by the four-sided roller 14-5 is supported by the receiving portion 131-5 along the upper surface of the receiving portion 131-5. The length of the upper half of the circumference of the small circle in the torus shape of the receiving portion 131-5 corresponds to the additional feeding amount ΔL. That is, the additional feeding amount ΔL and the diameter d of the small circle in the torus shape of the receiving portion 131-5 satisfy the following equations.

ΔL = 1/2 × π × d

In the landing platform 13-5 of the present embodiment, in order to prevent the balloon 10-5 from colliding with the ground when the additional feeding amount ΔL is 1 m or less, the torus shape of the receiving portion 131-5 is satisfied so as to satisfy the following relationship. Determine the diameter d of the small circle in.

d <2 / π ≒ 0.64 (cm)

By determining d so as to satisfy the above relationship, the movement of the balloon 10-5 is restricted to the mooring line 11-5 until the additional feeding amount ΔL exceeds 1 m. Further, when the additional feeding amount ΔL is 1 m or more, the posture of the balloon 10-5 becomes stable as described above.

It will be appreciated by those skilled in the art that various changes, substitutions and modifications can be made to this without departing from the spirit and scope of the invention.

1, 1-1-5 Mooring balloons 10, 10-1-5 Balloons 11, 11-1-5 Mooring ropes 13, 13-1-5 Mooring balloons Landing platform 131, 131-1-5 Receiving parts 132, 132- 1-5 legs

d <2 / π ≒ 0.64 (m )

Claims (12)

A balloon containing a resin bag that forms a flat shape when the inside is filled with gas at the first internal pressure.
A plurality of mooring lines, each end of which is connected to the outer surface of the balloon,
It has a landing platform on which the balloon lands,
The landing platform
A receiving portion which is a resin bag body having a torus shape when the inside is filled with gas at a second internal pressure lower than the first internal pressure.
A contact portion that is arranged on the outer surface of the receiving portion and that the balloon comes into contact with when the balloon lands on the landing platform.
A mooring balloon comprising a leg portion which is a plurality of resin bag bodies having a column shape when one end is connected to the receiving portion and the inside is filled with gas. The mooring balloon according to claim 1, wherein the material of the contact portion is the same as the material of the outer surface of the balloon. The mooring balloon according to claim 1, wherein the material of the contact portion is a material having a coefficient of static friction with the material of the outer surface of the balloon larger than that of the material of the surface of the balloon. The first internal pressure is 0.3 kPa or more, and
The mooring balloon according to any one of claims 1 to 3, wherein the second internal pressure is less than 0.3 kPa. Any one of claims 1 to 4, wherein the balloon has a flat shape having a balloon diameter D1 which is a diameter of a cross section in the horizontal direction of 3 m or more and 9 m or less when the inside is filled with gas by the first internal pressure. Mooring balloons as described in section. The balloon diameter D1 when the inside is filled with gas at the first internal pressure and the outer diameter D2 of a large circle in the torus shape when the inside is filled with gas at the second internal pressure are D1 × 0. The moored balloon according to claim 5, which satisfies the relationship of .6 ≤ D2 <D1. A balloon containing a resin bag having a flat shape when filled with gas and having a balloon diameter of D1 which is the diameter of the horizontal cross section of the flat shape.
A plurality of mooring lines, each end of which is connected to the outer surface of the balloon,
It has a landing platform on which the balloon lands,
The landing platform
A resin bag that forms a torus shape when the inside is filled with gas, and a receiving portion in which the inner diameter D3 of the great circle in the torus shape satisfies the relationship of D1 × 0.68 ≦ D3 ≦ D1.
A mooring balloon comprising a leg portion which is a plurality of resin bag bodies having a column shape when one end is connected to the receiving portion and the inside is filled with gas. What is the balloon diameter D1 and the height H from the other end of the leg portion, which is not one end, to the contact portion which is arranged on the outer surface of the receiving portion and comes into contact with the balloon when the balloon lands on the landing platform? , H ≧ D1 × 0.35. The moored balloon according to claim 7. A balloon containing a resin bag that forms a flat shape when filled with gas,
A plurality of mooring lines, each end of which is connected to the outer surface of the balloon,
It has a landing platform on which the balloon lands,
The landing platform
Receiving part A receiving part that is a resin bag that forms a torus shape when the air chamber is filled with gas.
A leg portion, which is a plurality of resin bag bodies having a column shape when one end is connected to the receiving portion and filled with gas, is provided.
The legs
A plurality of first legs each having a gas-filled first leg air chamber,
A plurality of second legs each having a second leg air chamber filled with gas, and the second leg air chamber is separated from the receiving air chamber and the first leg air chamber. A mooring balloon comprising the receiving portion air chamber connected to the receiving portion and a second leg portion separated from the first leg portion air chamber at positions adjacent to each other in the receiving portion. A balloon containing a resin bag that forms a flat shape when filled with gas,
A plurality of mooring lines, each end of which is connected to the outer surface of the balloon,
It has a landing platform on which the balloon lands,
The landing platform
A resin bag that forms a torus shape when the inside is filled with gas, and a receiving portion in which the inner diameter of the great circle of the torus shape is D3.
A plurality of resin bag bodies having one end connected to the receiving portion and forming a pillar shape when the inside is filled with gas, and the balloon is arranged on the outer surface of the receiving portion from the other end other than the one end. A moored balloon comprising a leg portion having a height H to a contact portion with which the balloon contacts when landing on the landing platform satisfies H <D3 / 2. The mooring balloon according to claim 10, wherein the height H and the outer diameter D2 of the great circle in the torus shape satisfy the relationship of H <D2 × 0.4125. A balloon containing a resin bag that forms a flat shape when filled with gas,
A plurality of mooring lines, each end of which is connected to the outer surface of the balloon,
It has a landing platform on which the balloon lands,
The landing platform
A resin bag that forms a torus shape when the inside is filled with gas, and the diameter d of the small circle in the torus shape is a receiving portion that satisfies the relationship d <2 / π.
A mooring balloon comprising a leg portion which is a plurality of resin bag bodies having a cylindrical shape when one end is connected to the receiving portion and the inside is filled with gas.

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