JP6357494B2 - Moored balloon - Google Patents

Description

  The present invention relates to a mooring balloon.

  Mooring balloons having a balloon and a mooring line connected to the balloon for mooring the balloon are known. Moored balloons are used for surveying the wind speed in the sky when constructing large structures such as wind power generators, surveying the vertical distribution of wind speed and temperature, etc., and taking pictures to check the damage situation at the time of disaster It is known. However, the moored balloon may not be able to maintain its posture when subjected to strong winds.

  Patent Document 1 describes a mooring balloon in which a stretchable elastic member and a stop rope connected in parallel to the elastic member are connected to a mooring line that is located leeward when located in the air. The mooring balloon described in Patent Literature 1 is connected to a mooring line on the leeward side by an elastic member that can be expanded and contracted, so that when the balloon receives wind from the windward side, the elastic member extends according to the wind force. The posture of the balloon can be maintained. Moreover, in the mooring balloon described in Patent Document 1, the stop rope connected in series with the elastic member functions as a limiter that limits the length of the elastic member to extend, and the elastic member can be prevented from extending too much.

U.S. Pat. No. 3,318,553

  However, in the moored balloon described in Patent Document 1, since the spring constant of the elastic member is uniform, the elongation of the elastic body proportional to the square of the wind speed does not follow the change in the wind speed. In the mooring balloon described in Patent Document 1, since the elastic body does not follow the change in wind speed, the elastic member having a spring constant that maintains the attitude of the balloon at a certain wind speed, the wind speed exceeding a predetermined range. There is a possibility that the balloon cannot maintain a desired posture when it receives a wind having

  For example, if the spring constant of the elastic member is relatively small and the elastic member is easily extended by wind force, the balloon can control the attitude according to the wind force received by the mooring balloon when the wind force is relatively small. There is a possibility that the posture cannot be controlled because the elastic member is fully extended. On the other hand, when the elastic member has a relatively large spring constant and the elastic member is difficult to extend by wind force, the balloon can control the attitude according to the wind force received by the mooring balloon when the wind force is relatively large, but when the wind force is small There is a possibility that the posture cannot be controlled without the elastic member extending sufficiently.

  It is an object of the present invention to provide a moored balloon that can maintain the attitude of the balloon according to the wind force of the wind received by the moored balloon.

  In order to achieve the above object, a mooring balloon according to the present invention includes a balloon that has a flat shape when filled with gas, a plurality of mooring lines each having one end connected to the surface of the balloon, and a plurality of mooring lines. And an elastic member group connected to any one of the mooring lines.

  In the mooring balloon according to the present invention, the elastic member group preferably includes a plurality of elastic members connected in parallel.

  In the mooring balloon according to the present invention, the elastic member group preferably includes a plurality of elastic members having different lengths.

  In the mooring balloon according to the present invention, the elastic member group preferably includes a plurality of elastic members having different spring constants.

  In the mooring balloon according to the present invention, the length of the plurality of elastic members is preferably shorter as the spring constant of the plurality of elastic members is larger.

  In the mooring balloon according to the present invention, the elastic member group preferably includes a plurality of elastic members connected in series.

  In the mooring balloon according to the present invention, the elastic member group preferably includes a plurality of elastic members having different spring constants.

  In the mooring balloon according to the present invention, it is preferable that both ends of each of the plurality of elastic members are connected to the mooring line.

  Further, in the mooring balloon according to the present invention, it is preferable that the length of the mooring line while being connected to both ends of each of the plurality of elastic members is longer as the spring constant of the plurality of elastic members is larger.

  ADVANTAGE OF THE INVENTION According to this invention, the mooring balloon which can maintain the attitude | position of a balloon according to the wind force of the wind which a mooring balloon receives is provided.

(A) is a figure which shows the 1st state of the 1st mooring balloon relevant to the mooring balloon which concerns on embodiment, (b) is a figure which shows the 2nd state of the 1st mooring balloon shown to (a). And (c) is a diagram showing a first state of the second mooring balloon related to the mooring balloon according to the embodiment, and (d) is a second state of the second mooring balloon shown in (c). FIG. It is a figure explaining the mooring balloon which connects an elastic member to the mooring subline located in the leeward at the time of mooring, (a) is a figure which shows the 1st structural example to which the elastic member was connected, (b) is an elastic member. Is a diagram showing a second configuration example in which the elastic members are connected, (c) is a diagram showing a third configuration example in which the elastic members are connected, and (d) is a fourth configuration example in which the elastic members are connected. FIG. (A) is a figure which shows the state which the elastic member of Fig.2 (a) extended, (b) is a figure which shows the state which the elastic member of FIG.2 (b) extended, c) is a figure which shows FIG. It is a figure which shows the state which the elastic member of c) extended, (d) is a figure which shows the state in which the elastic member of Fig.2 (a) was extended. (A) is a figure which shows the 1st state of the 3rd mooring balloon relevant to the mooring balloon which concerns on embodiment, (b) is a figure which shows the 2nd state of the 3rd mooring balloon shown to (a). And (c) is a diagram showing the length of the mooring sub-line of the third mooring balloon in the state shown in (a), and (d) is the mooring depot of the third mooring balloon in the state shown in (b). It is a figure which shows the length of a cable and an elastic member. It is a figure explaining the operation | movement of the 3rd mooring balloon when the spring constant of the elastic member shown in FIG. 4 is small and the expansion width of the elastic member accompanying the increase in a wind speed is large, (a) is the 1st of the 3rd mooring balloon. It is a figure which shows a state, (b) is a figure which shows the 2nd state of a 3rd mooring balloon, (c) is a figure which shows the 3rd state of a 3rd mooring balloon, (d) is a 3rd It is a figure which shows the 4th state of a mooring balloon, (e) is a figure which shows the length of the mooring sub rope and elastic member of the 3rd mooring balloon in the state 1 state shown to (a), (f) is a figure which shows the length of the mooring sub rope and elastic member of the 3rd mooring balloon in the 2nd state shown to (b), (g) is the 3rd and 3rd shown to (c) and (d). It is a figure which shows the length of the mooring sub rope and elastic member of the 3rd mooring balloon in a 4th state. It is a figure explaining operation | movement of a mooring balloon when the spring constant of the elastic member shown in FIG. 4 is large, and the expansion width of an elastic member with the increase in a wind speed is small, (a) is a 1st state of a 3rd mooring balloon. (B) is a figure which shows the 2nd state of a 3rd mooring balloon, (c) is a figure which shows the 3rd state of a 3rd mooring balloon, (d) is a 3rd mooring figure It is a figure which shows the 4th state of a balloon. It is a perspective view of the mooring balloon which concerns on 1st Embodiment located in the air. (A) is a partial cross-sectional side view of a balloon filled with gas, and (b) is a bottom view of the balloon filled with gas. It is a top view of the scoop shown in FIG. (A) is a figure which shows the 1st structural example of the 1st elastic member-3rd elastic member shown in FIG. 7, (b) is the 2nd structural example of the 1st elastic member-3rd elastic member shown in FIG. (C) is a figure which shows the 3rd structural example of the 1st elastic member-3rd elastic member shown in FIG. 7, (d) is a 1st elastic member-3rd elasticity shown in FIG. It is a figure which shows the 4th structural example of a member. It is a figure which shows the length of the 1st mooring subline-3rd mooring subline and the 1st elastic member-the 3rd elastic member which are shown in FIG. FIG. 8 is a view showing a posture when the mooring balloon shown in FIG. 7 receives wind; (a) shows a first state where none of the first elastic member to the third elastic member is extended; Only the 1st elastic member shows the 2nd state which extends, (c) shows the 3rd state where the 1st elastic member and the 2nd elastic member extend, (d) shows the 1st elastic member-the 3rd elastic member. A fourth state in which everything is extended is shown. It is the elements on larger scale including the 1st elastic member-the 3rd elastic member shown in Drawing 12, (a) shows the 1st state where none of the 1st elastic member-the 3rd elastic member is extended, (b) Shows a second state in which only the first elastic member extends, (c) shows a third state in which the first elastic member and the second elastic member extend, and (d) shows a first elastic member to a third elastic member. 4 shows a fourth state in which all of are extended. (A) is a figure which shows the relationship between a wind speed and a wind force, (b) is a 1st figure which shows the relationship between a wind speed, a wind force, and the expansion | extension of an elastic member, (c) is a wind speed, a wind force, and an elastic member. It is a 2nd figure which shows the relationship with elongation. It is a perspective view of the mooring balloon which concerns on 2nd Embodiment located in the air. (A) is a figure which shows the 1st structural example of the 1st elastic member-3rd elastic member shown in FIG. 15, (b) is the 2nd structural example of the 1st elastic member-3rd elastic member shown in FIG. (C) is a figure which shows the 3rd structural example of the 1st elastic member-3rd elastic member shown in FIG. 15, (d) is the 1st elastic member-3rd elasticity shown in FIG. It is a figure which shows the 4th structural example of a member. It is a figure which shows the length of the 1st mooring subline-3rd mooring subline and the 1st elastic member-the 3rd elastic member which are shown in FIG. It is a figure which shows the attitude | position when the mooring balloon shown in FIG. 15 received the wind, (a) shows the 1st state which none of the 1st elastic member-the 3rd elastic member are extended, (b) is The second state in which the first elastic member predominantly extends is shown, (c) shows the third state in which the second elastic member predominantly extends, and (d) shows the second state in which the third elastic member predominantly extends. 4 shows the state. It is a perspective view of the mooring balloon which concerns on 3rd Embodiment located in the air. It is a figure which shows the length of the 1st mooring subline-3rd mooring subline and the 1st elastic member-the 3rd elastic member which are shown in FIG. It is a figure which shows the attitude | position when the mooring balloon shown in FIG. 19 received the wind, (a) shows the 1st state which none of the 1st elastic member-the 3rd elastic member are extended, (b) is The second state in which the first elastic member predominantly extends is shown, (c) shows the third state in which the second elastic member predominantly extends, and (d) shows the second state in which the third elastic member predominantly extends. 4 shows the state. It is a figure which shows the example of formation of the elastic member group containing several elastic members from which a spring constant differs, (a) shows a 1st example, (b) shows a 2nd example, (c) is a 1st The example of 3 is shown.

  A mooring balloon according to the present invention will be described with reference to the following drawings. However, it should be noted that the technical scope of the present invention is not limited to these embodiments, and extends to equivalents to the invention described in the claims.

(Outline of the mooring balloon according to the embodiment)
The mooring balloon according to the embodiment includes an elastic member group including a plurality of elastic members connected to any one of a plurality of mooring lines connected to one end of a balloon that becomes flat when the inside is filled with gas. Have In the mooring balloon according to the embodiment, any one of the plurality of elastic members included in the elastic member group expands and contracts with a spring constant corresponding to the wind force generated by the wind speed received by the mooring balloon, so that the attitude of the balloon can be maintained constant. it can. As used herein, the term “spring constant” defines a proportional relationship between tension applied to an elastic member such as a metal spring, a plastic spring, and rubber and the elongation of the elastic member. Means a constant. That is, the spring constant is a constant corresponding to k in Hooke's law.

(Related mooring balloon issues)
Before describing the mooring balloon according to the embodiment, the problem of the mooring balloon related to the mooring balloon according to the embodiment will be briefly described.

  Fig.1 (a) is a figure which shows the 1st state of the 1st mooring balloon relevant to the mooring balloon which concerns on embodiment, FIG.1 (b) is 2nd of the 1st mooring balloon shown to Fig.1 (a). It is a figure which shows the state of. FIG.1 (c) is a figure which shows the 1st state of the 2nd mooring balloon relevant to the mooring balloon which concerns on embodiment, FIG.1 (d) is the 2nd of the 2nd mooring balloon shown in FIG.1 (c). It is a figure which shows the state of. In FIG. 1, the wind speed received by the first mooring balloon in the first state is lower than the wind speed received by the first mooring balloon in the second state.

  Each of the first mooring balloon 901 and the second mooring balloon 902 includes a balloon 910 that becomes flat when the inside is filled with a gas, a scoop 920 that is positioned leeward of the balloon, a balloon 910, and a mooring device (not shown). And a mooring line 930 for connecting the two. The mooring lines include a first mooring subline 931, a second mooring subline 932, a third mooring subline 933, a first mooring subline 931, a second mooring subline 932, and one ends of which are joined to the balloon 910. A mooring main line 935 connected to the third mooring subline 933 through a node 934 is provided. A mooring device (not shown) unwinds or winds the mooring main rope 935, whereby the position where the balloon 910 is moored is determined.

  As shown in FIG. 1A, the first mooring balloon 901 is arranged such that the longitudinal direction of the balloon 910 is substantially parallel to the horizontal direction when the wind speed of the wind received by the first mooring balloon 901 is substantially zero or light. The lengths of the first mooring subline 931, the second mooring subline 932, and the third mooring subline 933 are defined. In the first mooring balloon 901, as the wind speed of the wind received by the first mooring balloon 901 increases, the wind pressure received by the scoop 920 increases, and as shown in FIG. 1B, the longitudinal direction of the balloon 910 becomes horizontal. On the other hand, the posture has an inclination angle, and the posture of the balloon 910 may become unstable.

  On the other hand, when the second mooring balloon 902 receives wind having a relatively large wind speed, the second mooring balloon 902 is arranged such that the longitudinal direction of the balloon 910 is substantially parallel to the horizontal direction. A third mooring subline 933 longer than the third mooring subline 933 is arranged. As shown in FIG. 1 (d), the second mooring balloon 902 is configured so that the longitudinal direction of the balloon 910 is substantially parallel to the horizontal direction when the wind speed of the wind received by the second mooring balloon 902 is relatively high. The lengths of the mooring subline 931, the second mooring subline 932, and the third mooring subline 933 are defined. However, when the wind speed of the wind received by the second mooring balloon 902 is substantially zero or a slight wind, the second mooring balloon 902 has an inclination angle with respect to the horizontal direction of the balloon 910 as shown in FIG. The posture of the balloon 910 may become unstable.

  Next, a mooring balloon in which an elastic member is connected to a mooring subline that is located leeward when mooring will be described. 2A is a diagram showing a first configuration example in which an elastic member is connected, FIG. 2B is a diagram showing a second configuration example in which an elastic member is connected, and FIG. It is a figure which shows the 3rd structural example to which the elastic member was connected, FIG.2 (d) is a figure which shows the 4th structural example to which the elastic member was connected. 3A is a diagram showing a state in which tension is applied to the elastic member in FIG. 2A, and FIG. 3B shows a state in which tension is applied to the elastic member in FIG. 2B. FIG. 3C is a diagram showing a state in which tension is applied to the elastic member in FIG. 2C, and FIG. 3D is a diagram in which tension is applied to the elastic member in FIG. 2D. FIG.

  In the first configuration example shown in FIGS. 2 (a) and 3 (a), the length of the elastic member before the tension is applied is the same as the lengths of the first mooring subline and the second mooring subline. In the second configuration example to the fourth configuration example shown in FIGS. 2B to 2D and 3B to 3D, the length of the elastic member before the tension is applied is the first mooring. It is shorter than the length of the sub rope and the second mooring sub rope. In the second configuration example, one end of the elastic member is connected to the node of the first sub mooring line to the third sub mooring line, and the other end of the elastic member is the auxiliary mooring line to the other end of the third sub mooring line and the balloon. Connected through. In the third configuration example, one end of the elastic member is connected to a node between the first sub mooring line to the third sub mooring line via an auxiliary mooring line, and the other end of the elastic member is the other end of the third sub mooring line and Connected to the balloon. In the fourth configuration example, one end of the elastic member is connected to the node of the first sub mooring line to the third sub mooring line via the first auxiliary mooring line, and the other end of the elastic member is other than the third sub mooring line. Connected to the end and the balloon via a second auxiliary mooring line. Hereinafter, based on the fourth configuration example, a mooring balloon in which an elastic member is connected to a mooring subline positioned in the lee during mooring will be described.

  FIG. 4A is a diagram showing a first state of the third mooring balloon related to the mooring balloon according to the embodiment, and FIG. 4B is a second state of the third mooring balloon shown in FIG. It is a figure which shows the state of. 4 (c) is a diagram showing the length of the mooring sub-line of the third mooring balloon in the state shown in FIG. 4 (a), and FIG. 4 (d) is a diagram showing the length in the state shown in FIG. 4 (b). It is a figure which shows the length of the mooring sub rope of 3 mooring balloons, and an elastic member. In FIG. 4, similarly to FIG. 1, the wind speed received by the second mooring balloon 902 in the first state is smaller than the wind speed of the wind received by the second mooring balloon 902 in the second state.

  The third mooring balloon 903 differs from the first mooring balloon 901 and the second mooring balloon 902 in that it has an elastic member 950 connected to the third mooring sub-line 933. As shown in FIG. 4A, when the wind speed of the wind received by the third mooring balloon 903 is substantially zero or light wind, the length of the third mooring subline 933 connected in parallel to the elastic member 950 is the elastic member. Longer than the length of 950, the longitudinal direction of the balloon 910 is substantially parallel to the horizontal direction. The third mooring balloon 903 becomes longer as the wind speed of the wind received by the third mooring balloon 903 increases. As shown in FIG. 4B, the third mooring balloon 903 has a longer length of the elastic member 950 as the wind speed of the wind received by the third mooring balloon 903 increases, so that the longitudinal direction of the balloon 910 is horizontal. And become almost parallel.

  However, the third mooring balloon 903 has a problem that it is not easy to select the spring constant of the elastic member 950. When the third mooring balloon 903 receives a wind at or above the wind speed at which the elastic member 950 extends when the elastic member 950 has a small spring constant and the elastic member 950 has a large expansion width as the wind speed increases. The longitudinal direction of the balloon 910 has an inclination angle with respect to the horizontal direction. On the other hand, when the third mooring balloon 903 receives a relatively low wind speed when the elastic member 950 has a large spring constant and the elastic member 950 has a small expansion width as the wind speed increases, The longitudinal direction of 910 has an inclination angle with respect to the horizontal direction.

  FIG. 5 is a diagram for explaining the operation of the mooring balloon 903 when the elastic constant of the elastic member 950 is small and the expansion width of the elastic member 950 is large as the wind speed increases. FIG. 5 (a) is a diagram showing a first state of the third mooring balloon, FIG. 5 (b) is a diagram showing a second state of the third mooring balloon, and FIG. 5 (c) is a diagram showing the third state. It is a figure which shows the 3rd state of a mooring balloon, FIG.5 (d) is a figure which shows the 4th state of a 3rd mooring balloon. FIG.5 (e) is a figure which shows the length of the mooring sub rope and elastic member of the 3rd mooring balloon in the 1st state shown to Fig.5 (a), FIG.5 (f) is FIG.5 (b). It is a figure which shows the length of the mooring sub rope and elastic member of the 3rd mooring balloon in the 2nd state shown to). FIG. 5G is a view showing the lengths of the anchoring sub-line and the elastic member of the third anchoring balloon in the third and fourth states shown in FIGS. 5C and 5D. The spring constant of the elastic member 950 of the third mooring balloon 903 shown in FIG. 5 is relatively small. The wind speed received by the third mooring balloon 903 in the second state shown in FIG. 5B is higher than the wind speed received by the balloon 910 in the first state shown in FIG. In addition, the wind speed of the wind received by the balloon 910 in the third state shown in FIG. 5C is larger than the wind speed of the wind received by the third moored balloon 903 in the second state shown in FIG. And the wind speed of the wind which the 3rd mooring balloon 903 receives in the 4th state shown in Drawing 5 (d) is higher than the wind speed of the wind which the 3rd mooring balloon 903 receives in the 3rd state shown in Drawing 5 (c). large.

  In the example shown in FIG. 5, the third mooring balloon 903 has a longitudinal direction of the balloon 910 that increases from the first state to the third state as the length of the elastic member 950 increases as the wind speed increases. Maintain a posture that is approximately parallel to the horizontal direction. However, in the fourth state, the third mooring balloon 903 is in a posture in which the longitudinal direction of the balloon 910 is substantially parallel to the horizontal direction when the third mooring balloon 903 receives a wind at or above the wind speed at which the elastic member 950 extends. Cannot be maintained.

  FIG. 6 is a diagram for explaining the operation of the mooring balloon 903 when the spring constant of the elastic member 950 is large and the expansion width of the elastic member 950 is small as the wind speed increases. 6A is a diagram showing a first state of the third mooring balloon, FIG. 6B is a diagram showing a second state of the third mooring balloon, and FIG. 6C is a diagram showing the third state. It is a figure which shows the 3rd state of a mooring balloon, FIG.6 (d) is a figure which shows the 4th state of a 3rd mooring balloon. The spring constant of the elastic member 950 of the third mooring balloon 903 shown in FIG. 4 is relatively large. 6 (a) to 6 (d), the wind speed of the wind received by the third mooring balloon 903 is the smallest in the first state as in FIGS. 5 (a) to 5 (d). The state increases in the order of the state, the third state, and the fourth state, and the fourth state is the largest.

  In the example shown in FIG. 6, the third mooring balloon 903 has the longitudinal direction of the balloon 910 in the first state where the wind speed of the wind received by the third mooring balloon 903 is substantially zero or in the first state where the wind speed is the highest and in the fourth state where the wind speed is the highest. Maintain a posture in which the direction is substantially parallel to the horizontal direction. However, in the second state and the third state, the third mooring balloon 903 has an insufficient length of extension of the elastic member 910 corresponding to the wind speed received by the third mooring balloon 903, and the longitudinal direction of the balloon 910 is A posture that is substantially parallel to the horizontal direction cannot be maintained.

  As described with reference to FIGS. 3 to 6, the third mooring balloon 903 has a problem that it is not easy to select the spring constant of the elastic member 950. The mooring balloon according to the embodiment solves the problem of the third mooring balloon 903.

(Configuration and function of the mooring balloon according to the first embodiment)
FIG. 7 is a perspective view of the mooring balloon according to the first embodiment located in the air.

  The mooring balloon 1 includes a balloon 10, a scoop 20, a mooring line 30, a relay station 40, and an elastic member group 50. The mooring line 30 includes a first mooring line 31 to a third mooring line 33 and a mooring main line 35 connected to the first mooring line 31 to the third mooring line 33 via a node 34. . The elastic member group 50 includes a first elastic member 51 to a third elastic member 53.

  FIG. 8A is a partial sectional side view of the balloon 10 filled with gas inside, and FIG. 8B is a bottom view of the balloon 10 filled with gas inside.

  The balloon 10 includes an outer bag 11, a helium storage bag 12, an air storage bag 13, a payload dome 14, and three mooring line attachment portions 15. Since the balloon 10 has a double structure of the helium storage bag 12 and the air storage bag 13 and the outer bag 11, the outer bag 11 does not need to be formed of a material having gas barrier properties. The outer bag 11 is formed of a rigid, lightweight and air-tight material such as synthetic fiber. The helium storage bag 12 is a bag filled with helium, and is formed of a material that is lower in strength and durability than the outer bag 11 and is light in weight. For example, the helium storage bag 12 is formed by welding a plastic film. The air storage bag 13 is made of a lightweight material that has lower strength and durability than the outer bag 11. Similar to the helium storage bag 12, the air storage bag 13 is formed by welding a plastic film. The payload dome 14 is a cylindrical member with a bottom, and is arranged so that the bottom is in contact with the air storage bag 13. The payload dome 14 is made of a rigid and lightweight material such as polystyrene foam. A relay station 40 is disposed in the concave portion of the payload dome 14.

  The balloon 10 has a spheroid shape having a minor axis in the height direction when the helium storage bag 12 is filled with helium and the air storage bag 13 is filled with air. That is, when the inside is filled with gas, the balloon 10 has a flat shape having a circular plane shape and an elliptical front shape. In one example, the balloon 10 has a circular planar shape with a diameter of 4.6 [m], and an elliptical front shape with a major axis of 4.6 [m] and a minor axis of 2.66 [m].

  The three mooring line attachment portions 15 are arranged on the surface of the balloon 10 so as to follow the long diameter when viewed from the front. Each of the three mooring line attachment portions 15 is connected to one end of any one of the first mooring line 31 to the third mooring line 33. One end of a third mooring sub-line 33 is connected to the mooring line attachment part 15 disposed at a position close to the portion to which the scoop 20 is joined, and the other two mooring line attachment parts 15 are connected to the first mooring line attachment part 15. One ends of the sub rope 31 and the second mooring sub rope 32 are connected to each other. The balloon 10 maintains the posture in which the scoop 20 is located leeward when the balloon 10 is moored in the air. The third mooring subline 33 is positioned leeward of the first mooring subline 31 and the second mooring subline 32 in order to maintain the posture in which the scoop 20 is positioned leeward when the balloon 10 is moored in the air.

  FIG. 9 is a plan view of the scoop 20.

  The scoop 20 is a film material having a flexible surface 21 formed of polyester woven so as to transmit air from one surface to the other surface. The scoop 20 is also referred to as a posture stabilizing film. The scoop 20 includes a base 23, a first equilateral side 24 and a second equilateral side 25 connected at one end at an apex angle 28 positioned opposite to the base 23, and a first equilateral side 24 and a second equilateral side 25 from both ends of the base 23. It has a shape surrounded by a first cutout side 26 and a second cutout side 27 that extend to the other end. The first equal side 24 and the second equal side 25 are equal in length to each other, and the first cut-out side 26 and the second cut-out side 27 are equal in length to each other. That is, the scoop 20 is formed in an isosceles triangle shape with a base corner portion notched. The scoop 20 is joined to the balloon 10 in the vicinity of the base 23, the first cut-out side 26, and the second cut-out side 27. A connecting line 29 that connects the scoop 20 and the third mooring subline 33 is connected to the apex angle 28 of the scoop 20. By connecting the apex angle 28 of the scoop 20 and the third mooring sub-line 33 via the connection line 29, the scoop 20 winds like a sail of a yacht when the balloon 10 is lifted into the air. In response, the balloon 10 stabilizes the wind so that the scoop 20 becomes leeward.

  Each of the 1st mooring subline 31-the 3rd mooring subline 33 is formed with the material which is not cut | disconnected by the tension | tensile_strength by the wind received when the mooring balloon 1 exists in the air. One end of the third mooring subline 33 is connected to the mooring line attaching portion 15 disposed at a position close to the portion where the scoop 20 is joined, and one end of each of the first mooring subline 31 and the second mooring subline 32. Are connected to the other two mooring line attachments 15. The other end of each of the first mooring subline 31 to the third mooring subline 33 is connected to one end of the mooring main line 33 at the node 34. In one example, the other end of each of the first mooring subline 31 to the third mooring subline 33 at the node 34 and one end of the mooring main line 33 are connected via a connection fitting. The third mooring subline 33 is connected to the apex angle of the scoop 20 via the connection line 29. In one example, the third mooring sub-line 33 and the connection line 29 are connected via a connection fitting.

  The length of the 3rd mooring subline 33 is longer than the length of the 1st mooring subline 31 and the 2nd mooring subline 32, and the length of the 1st mooring subline 31 and the 2nd mooring subline 32 is mutually equal.

  The mooring main rope 35 is formed of a material that is not cut by the tension of the wind received when the mooring balloon 1 is in the air, like the first mooring subline 31 to the third mooring subline 33. The other end of the mooring main rope 35 is connected to a mooring device (not shown). When the mooring main rope 35 is unwound from the mooring device connected to the other end of the mooring main rope 35, the balloon 10 rises in the air according to the unwinding amount, and when the mooring main rope 35 is taken up from the mooring device. The balloon 10 descends from the air according to the winding amount.

  The relay station 40 has a relay antenna and a mobile station antenna (not shown), and is between a base station connected to the mobile communication network and a mobile terminal located in an area covered by the base station. A communication network.

  Next, the first elastic member 51 to the third elastic member 53 will be described. FIG. 10A is a diagram illustrating a first configuration example of the first elastic member 51 to the third elastic member 53, and FIG. 10B is a second configuration example of the first elastic member 51 to the third elastic member 53. FIG. FIG. 10C is a diagram illustrating a third configuration example of the first elastic member 51 to the third elastic member 53, and FIG. 10D is a fourth configuration example of the first elastic member 51 to the third elastic member 53. FIG.

  In the first configuration example shown in FIG. 10A, the lengths of the first elastic member to the third elastic member before the tension is applied are the same as the lengths of the first mooring subline and the second mooring subline. is there. In the second configuration example to the fourth configuration example shown in FIGS. 10B to 10D, the lengths of the first elastic member to the third elastic member before the tension is applied are the first mooring subline and It is shorter than the length of the second mooring subline. In the second configuration example, one end of the first elastic member to the third elastic member is connected to a node of the first sub mooring line to the third sub mooring line, and the other end of the first elastic member to the third elastic member is the second one. The balloon is connected to the other end of the three sub mooring lines and the balloon via the third sub mooring lines. In the third configuration example, one end of the first elastic member to the third elastic member is connected to a node of the first sub mooring line to the third sub mooring line via the third sub mooring line, and the first elastic member to the first elastic member The other end of the three elastic members is connected to the balloon at the other end of the third sub mooring line. In the fourth configuration example, one end of the first elastic member to the third elastic member is connected to a node of the first sub mooring line to the third sub mooring line via the third sub mooring line, and the first elastic member to the first elastic member The other end of the three elastic members is connected to the other end of the third sub mooring line and the balloon via the third sub mooring line. Hereinafter, the first elastic member 51 to the third elastic member 53 will be described based on a fourth configuration example.

  Each of the first elastic member 51 to the third elastic member 53 is connected in parallel with a part of the third mooring line 33 at a position close to the node 34 of the third mooring line 33. One end of each of the first elastic member 51 to the third elastic member 53 is connected to the third mooring line 33, and the other end of each of the first elastic member 51 to the third elastic member 53 is connected to the third mooring line 33. Connected. In one example, the first elastic member 51 to the third elastic member 53 may be formed from a flat rubber string also called flat rubber or coal rubber, or may be formed from another elastic member such as a spring.

  The spring constant of the first elastic member 51 is smaller than the spring constant of the second elastic member 52, and the spring constant of the second elastic member 52 is smaller than the spring constant of the third elastic member 53. Since the spring constant of the first elastic member 51 is smaller than the spring constant of the second elastic member 52, the elongation of the first elastic member 51 is larger than the elongation of the second elastic member 52 when the same tension is applied. Further, since the spring constant of the second elastic member 52 is smaller than the spring constant of the third elastic member 53, when the same tension is applied, the elongation of the second elastic member 52 is larger than the elongation of the third elastic member 53. large.

  The length of the first elastic member 51 is shorter than the length of the second elastic member 52, and the length of the second elastic member 52 is shorter than the length of the third elastic member 53. Regarding the relationship between the spring constant and the length of the first elastic member 51 to the third elastic member 53, the first elastic member 51 having the smallest spring constant has the shortest length, and the first elasticity has the second smallest spring constant. The length of the member 51 is the second shortest, and the length of the third elastic member 53 having the largest spring constant is the longest. The length of the third mooring subline 33 while being connected to both ends of each of the first elastic member 51 to the third elastic member 53 is longer than the length of the third elastic member 53. In one example, the first elastic member 51 to the third elastic member 53 are connected by a metal ring.

  FIG. 11 is a diagram illustrating the lengths of the first mooring sub-line 31 to the third mooring sub-line 33 and the first elastic member 51 to the third elastic member 53. In FIG. 8, the bidirectional arrow L1 indicates the length of the first elastic member 51 when the tension is zero, and the bidirectional arrow L2 indicates the length of the second elastic member 51 when the tension is zero. An arrow L3 indicates the length of the third elastic member 53 when the tension is zero. The bidirectional arrow L4 indicates the length of the third bullet mooring sub-line 33 while being connected to both ends of each of the first elastic member 51 to the third elastic member 53.

  The lengths of the first elastic member 51 to the third elastic member 53 when the tension is zero are shorter than the length of the third mooring subline 33. The first elastic member 51 has a length L4 of the third elastic member 53 while being connected to both ends of each of the first elastic member 51 to the third elastic member 53 from the length L1 when the tension is zero. It extends to. The second elastic member 52 has a length L4 of the third elastic member 53 while being connected to both ends of each of the first elastic member 51 to the third elastic member 53 from the length L2 when the tension is zero. It extends to. The third elastic member 53 has a length L4 of the third elastic member 53 while being connected to both ends of the first elastic member 51 to the third elastic member 53 from a length L3 when the tension is zero. It extends to.

  12 is a view showing a posture when the mooring balloon 1 receives wind, and FIG. 13 is a partially enlarged view including the first elastic member 51 to the third elastic member 53 of FIG. 12A and 13A show a first state in which none of the first elastic member 51 to the third elastic member 53 is extended, and FIGS. 12B and 13B are the first elastic member. A second state in which only 51 extends is shown. FIGS. 12C and 13C show a third state in which the first elastic member 51 and the second elastic member 52 extend, and FIGS. 12D and 13D show the first elastic member 51 to the third elastic member. The 4th state which all the elastic members 53 extend is shown.

  In the first state, none of the first elastic member 51 to the third elastic member 53 extends, so that the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow La in FIG. The distance between both ends is equal to the length L1 of the first elastic member 51 when the tension is zero.

  In the second state, only the first elastic member 51 is extended, and the second elastic member 52 and the third elastic member 53 are loosened. The length between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Lb in FIG. 13B is equal to the length L1 of the first elastic member 51 when the tension is zero. Is a length between the length L2 of the second elastic member 52 when is zero. In the second state, the second elastic member 52 and the third elastic member 53 are loosened, so that the tension generated by the wind received by the scoop 20 is applied only to the first elastic member 51. In the second state, the distance between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Lb in FIG. 13B is the tension generated by the wind received by the scoop 20 and the first elasticity. It is defined by the spring constant of the member 51.

  In the third state, the first elastic member 51 and the second elastic member 52 are extended, and the third elastic member 53 is loosened. The length between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Lc in FIG. 13C is equal to the length L2 of the second elastic member 52 and the tension when the tension is zero. Is a length between the third elastic member 53 and the length L3 when is zero. In the third state, since the third elastic member 53 is slack, the tension generated by the wind received by the scoop 20 is applied to the first elastic member 51 and the second elastic member 52. In the third state, the distance between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Lc in FIG. 13C is the tension generated by the wind received by the scoop 20 and the first elasticity. It is defined by the spring constant of the member 51 and the second elastic member 52.

  In the fourth state, all of the first elastic member 51 to the third elastic member 53 are extended. The length between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Ld in FIG. 13D is equal to the length L3 of the third elastic member 52 when the tension is zero. It becomes the length between the length L4 of the 3rd elastic member 53 while the 1st elastic member 51-the 3rd elastic member 53 are connected. In the fourth state, the tension generated by the wind received by the scoop 20 is applied to all of the first elastic member 51 to the third elastic member 53. In the third state, the distance between both ends of the first elastic member 51 to the third elastic member 53 indicated by the bidirectional arrow Ld in FIG. 13D is the tension generated by the wind received by the scoop 20 and the first elasticity. It is defined by the spring constant of the member 51 to the third elastic member 53.

(Operational effect of the mooring balloon according to the first embodiment)
The mooring balloon 1 follows the change in the wind speed by connecting the first elastic member 51 to the third elastic member 53 connected in parallel to the third mooring subline 33 located in the lee of the mooring balloon 1 in parallel. An elastic function that stretches can be realized.

  FIG. 14A is a diagram showing the relationship between the wind speed and the wind force, FIG. 14B is a first diagram showing the relationship between the wind speed, the wind force, and the elongation of the elastic member, and FIG. 14C is the wind velocity. It is a 2nd figure which shows the relationship between wind force and the elongation of an elastic member. In each of Drawing 14 (b) and Drawing 14 (c), K1-K3 shows extension of an elastic member according to wind power.

  As shown in FIG. 14A, while the wind force increases in proportion to the square of the wind speed, the elongation of the elastic member is the force applied to the elastic member in accordance with Hooke's law, that is, the square of the wind force received by the mooring balloon 1. Increase proportionally.

  As shown in FIG. 14B, when the attitude of the mooring balloon is maintained by the elastic member having a single spring constant, the elastic member is allowed to follow the change in the wind speed in order to maintain the attitude of the mooring balloon. It is not possible. On the other hand, the mooring balloon 1 can make the elastic member follow the change in the wind speed by using a group of elastic members formed by a plurality of elastic members having different lengths. In the mooring balloon 1, only the first elastic member 51 extends when the wind speed is relatively low, and the first elastic member 51 and the second elastic member 52 extend when the wind speed increases. In the mooring balloon 1, all of the first elastic member 51 to the third elastic member 53 extend when the wind speed further increases. In the mooring balloon 1, it is possible to make the elastic member follow the change in the wind speed by increasing the number of elastic members that extend as the wind speed increases.

  For example, as shown in FIG. 14 (c), when the wind speed of the wind received by the mooring balloon is relatively small, the elastic member having the elongation K1 is extended with respect to the change in the wind speed. Then, as the wind speed increases, the elastic members that extend can be increased to increase the elongation of the elastic member group to K2 and K3. In the mooring balloon 1, since the spring constants of the first elastic member 51 to the third elastic member 53 are defined to increase according to the length, an elastic member having a large spring constant increases as the wind speed increases. This will contribute to growth. In the mooring balloon 1, the elastic member having a large spring constant contributes to the elongation sequentially as the wind speed increases, so that the elongation of the elastic member group can be defined according to the amount of increase in the wind force proportional to the square of the wind speed. . For example, the spring constant of the plurality of elastic members is 1 N / m for the elastic member group when the wind speed is 1 m / s, and 4 N / m for the elastic member group when the wind speed is 2 m / s. The elastic member group may have a spring constant of 9 N / m when the wind speed is 3 m / s.

(Configuration and function of the mooring balloon according to the second embodiment)
FIG. 15 is a perspective view of a mooring balloon according to the second embodiment located in the air.

  The mooring balloon 2 is different from the mooring balloon 1 according to the first embodiment in that an elastic member group 60 is connected in parallel to the third mooring subline 33 instead of the elastic member group 50. The elastic member group 60 includes a first elastic member 61 to a third elastic member 63 connected in series. Since the constituent elements of the mooring balloon 2 other than the elastic member group 60 have the same configuration and function as the constituent elements of the mooring balloon 1 with the same reference numerals, detailed description thereof is omitted here.

  FIG. 16A is a diagram illustrating a first configuration example of the first elastic member 61 to the third elastic member 63, and FIG. 16B is a second configuration example of the first elastic member 61 to the third elastic member 63. FIG. FIG. 16C is a diagram illustrating a third configuration example of the first elastic member 61 to the third elastic member 63, and FIG. 16D is a fourth configuration example of the first elastic member 61 to the third elastic member 63. FIG.

  In the first configuration example shown in FIG. 16A, the total length of the first elastic member to the third elastic member before the tension is applied is the length of the first mooring subline and the second mooring subline. Are the same. In the second configuration example to the fourth configuration example shown in FIGS. 16B to 16D, the total length of the first elastic member to the third elastic member before the tension is applied is the first mooring subordinate. It is shorter than the length of the cable and the second mooring sub cable. In the second configuration example, one end of the first elastic member is connected to the node of the first sub mooring line to the third sub mooring line, and one end of the third elastic member is connected to the other end of the third sub mooring line and a balloon. Connected via third sub mooring line. In the third configuration example, one end of the first elastic member is connected to a node of the first sub mooring line to the third sub mooring line via the third sub mooring line, and one end of the third elastic member is the third sub mooring line. Connected to the balloon at the other end of the cord. In the fourth configuration example, one end of the first elastic member is connected to a node of the first sub mooring line to the third sub mooring line via the third sub mooring line, and one end of the third elastic member is the third sub mooring line. The other end of the cord and the balloon are connected to the balloon via a third sub mooring cord. Hereinafter, the first elastic member 61 to the third elastic member 63 will be described based on the fourth configuration example.

  One end of the first elastic member 61 is connected to the third mooring line 33, and the other end of the first elastic member 61 is connected to one end of the second elastic member 62. The other end of the second elastic member 62 is connected to one end of the third elastic member 63, and the other end of the third elastic member is connected to the third mooring line 33. In one example, the first elastic member 61 to the third elastic member 63 may be formed of a flat rubber string also called flat rubber or coal rubber, similar to the first elastic member 51 to the third elastic member 53. Moreover, you may form from other elastic members, such as a spring. The spring constant of the first elastic member 61 is smaller than the spring constant of the second elastic member 62, and the spring constant of the second elastic member 62 is smaller than the spring constant of the third elastic member 63.

  FIG. 17 is a diagram illustrating the lengths of the first mooring sub-line 31 to the third mooring sub-line 33 and the first elastic member 61 to the third elastic member 63. FIG. 18 is a view showing the posture when the mooring balloon 2 receives wind. FIG. 18A shows a first state where none of the first elastic member 61 to the third elastic member 63 is extended, and FIG. 18B shows a second state where the first elastic member 61 extends predominantly. Indicates. FIG. 18C shows a third state in which the second elastic member 62 extends predominantly, and FIG. 18D shows a fourth state in which the third elastic member 63 predominantly extends. In FIG. 17, a bidirectional arrow L1 indicates the length of the first elastic member 61 to the third elastic member 63 when the tension is zero. A bidirectional arrow L4 indicates the length of the third bullet mooring sub-line 33 while being connected to both ends of each of the first elastic member 61 to the third elastic member 63.

  Each of the first elastic member 61 to the third elastic member 63 when the wind speed of the wind received by the mooring balloon 2 is substantially zero is shorter than the length of the third mooring subline 33. In the first state where the wind speed of the wind received by the mooring balloon 2 is substantially zero or a slight wind, the lengths of the first elastic member 61 to the third elastic member 63 are substantially L1 and are substantially equal to each other.

  When the wind speed of the wind received by the mooring balloon 2 gradually increases, as shown by an arrow A in FIG. 17, the first elastic member 61 having the smallest spring constant has the second elastic member 62 and the third elastic member having the relatively large spring constant. Compared with the elastic member 63, it extends greatly. This state corresponds to the second state shown in FIG.

  When the wind speed of the wind received by the mooring balloon 2 is further increased, as shown by an arrow B in FIG. 17, the first elastic member 61 having the smallest spring constant is fully extended, and the second elastic member 62 having the next smallest spring constant is extended. . This state corresponds to the third state shown in FIG.

  Further, when the wind speed of the wind received by the mooring balloon 2 is further increased, as indicated by an arrow C in FIG. 17, the second elastic member 62 is fully extended, and the third elastic member 63 having the largest spring constant is extended. This state corresponds to the fourth state shown in FIG. And the 3rd bullet mooring sub rope while the total length of the 1st elastic member 61-the 3rd elastic member 63 is connected to the both ends of each of the 1st elastic member 61-the 3rd elastic member 63 The third elastic member 63 extends until it becomes equal to the length L4 of 33.

(Operational effect of the mooring balloon according to the second embodiment)
The mooring balloon 2 connects the first elastic member 61 to the third elastic member 63 connected in series to the third mooring sub-line 33 located in the lee of the mooring balloon 2 in parallel, so that the mooring balloon 1 An elastic function that extends following the change in wind speed can be realized.

(Configuration and function of the mooring balloon according to the third embodiment)
FIG. 19 is a perspective view of a mooring balloon according to a third embodiment located in the air.

  The mooring balloon 3 is different from the mooring balloon 2 according to the first embodiment in that an elastic member group 70 is connected in parallel to the third mooring subline 33 instead of the elastic member group 60. Since the constituent elements of the mooring balloon 3 other than the elastic member group 60 have the same configuration and function as the constituent elements of the mooring balloons denoted by the same reference numerals, detailed description thereof is omitted here.

  The elastic member group 70 includes a first elastic member 71 to a third elastic member 73 connected in series. Each of the first elastic member 71 to the third elastic member 73 is different from the first elastic member 61 to the third elastic member 63 according to the second embodiment in that both ends are connected to the third mooring sub rope 33. Each of the first elastic member 71 to the third elastic member 73 is the same as the first elastic member 61 to the third elastic member 63 in the first to fourth configuration examples shown in FIGS. 16 (a) to 16 (d). However, here, the first elastic member 71 to the third elastic member 73 will be described based on the fourth configuration example.

  FIG. 20 is a diagram illustrating the lengths of the first mooring sub-line 31 to the third mooring sub-line 33 and the first elastic member 71 to the third elastic member 73. FIG. 21 is a view showing a posture when the mooring balloon 3 receives wind. FIG. 21A shows a first state in which none of the first elastic member 71 to the third elastic member 73 is extended, and FIG. 21B shows a second state in which the first elastic member 71 is dominantly extended. Indicates. FIG. 21C shows a third state in which the second elastic member 72 extends predominantly, and FIG. 21D shows a fourth state in which the third elastic member 73 extends predominantly. In FIG. 20, a bidirectional arrow L1 indicates the length of the first elastic member 71 to the third elastic member 73 when the tension is zero. A bidirectional arrow L4 indicates the length of the third bullet mooring sub-line 33 while being connected to both ends of each of the first elastic member 71 to the third elastic member 73.

  Each of the first elastic member 71 to the third elastic member 73 when the wind speed of the wind received by the mooring balloon 3 is substantially zero is shorter than the length of the third mooring subline 33. In the first state where the wind speed received by the mooring balloon 3 is substantially zero or a slight wind, the lengths of the first elastic member 71 to the third elastic member 73 are substantially L1 and are substantially equal to each other.

  When the wind speed of the wind received by the mooring balloon 3 gradually increases, as shown by an arrow A in FIG. 20, the first elastic member 71 having the smallest spring constant is replaced by the second elastic member 72 and the third elastic member 72 having a relatively large spring constant. Compared with the elastic member 73, it extends greatly. This state corresponds to the second state shown in FIG.

  When the wind speed of the wind received by the mooring balloon 3 is further increased, the length of the first elastic member 61 is set to the third mooring sub-time while being connected to both ends of the first elastic member 71 as shown by an arrow B in FIG. It becomes equal to the length L2 of the cord 33. Since the length of the first elastic member 61 becomes equal to the length L2 of the third mooring sub-line 33 while being connected to both ends of the first elastic member 71, the first elastic member 71 is not affected even if the wind speed increases. It does not extend beyond L2. In this state, even if the wind speed increases, the first elastic member 71 does not extend to L2 or more, so the second elastic member 72 having the next smallest spring constant extends. This state corresponds to the third state shown in FIG.

  Further, when the wind speed of the wind received by the mooring balloon 3 is further increased, the length of the second elastic member 62 is the third length while being connected to both ends of the second elastic member 72 as shown by an arrow C in FIG. It becomes equal to the length L3 of the mooring sub rope 33. Since the length of the second elastic member 62 becomes equal to the length L3 of the third mooring sub-line 33 while being connected to both ends of the second elastic member 72, the second elastic member 72 can It does not extend beyond L3. In this state, each of the first elastic member 71 and the second elastic member 72 does not extend to L1 and L2 or more even if the wind speed increases, so the third elastic member 73 having the largest spring constant extends. This state corresponds to the fourth state shown in FIG. And the 3rd bullet mooring sub rope while the total length of the 1st elastic member 61-the 3rd elastic member 63 is connected to the both ends of each of the 1st elastic member 61-the 3rd elastic member 63 The third elastic member 63 extends until it becomes equal to the length L4 of 33.

(Operational effect of the mooring balloon according to the third embodiment)
The mooring balloon 3 is connected to the third mooring subline 33 located in the lee of the mooring balloon 3 in parallel with the first elastic member 71 to the third elastic member 73 connected in series, so that the mooring balloon 1 is An elastic function that extends following the change in wind speed can be realized.

  Further, in the mooring balloon 3, the third mooring sub-rows 33 connected to both ends of the first elastic member 71 to the third elastic member 73 are excessively extended by the first elastic member 71 to the third elastic member 73. This can be prevented. In the mooring balloon 3, since the third mooring sub rope 33 can prevent each of the first elastic member 71 to the third elastic member 73 from extending too much, the first elastic member 71 to the third elastic member 73 extend. There is little risk of losing elasticity or cutting.

(Modification example of the mooring balloon according to the embodiment)
In the mooring balloons 1 to 3, the elastic member groups 50, 60, and 70 function so that the direction of the major axis of the balloon 10 is the horizontal direction. However, in the moored balloon according to the embodiment, the elastic member groups 50, 60, and 70 may be configured such that the major axis direction of the balloon 10 has a predetermined inclination with respect to the horizontal direction.

  In the mooring balloons 1 to 3, the balloon 10 has a spheroid shape having a minor axis in the height direction when the gas is filled therein, and the scoop 20 is joined. Embodiments are not limited to such embodiments. For example, the shape of the balloon may be streamlined or donut-shaped, and may have a shape having a vertical tail or a shape having a vertical tail and a horizontal tail so as to stabilize the weather. In the case of having a structure for stabilizing the weather such as the scoop 20, the vertical tail and the horizontal tail, the elastic member groups 50, 60 and 70 are connected in parallel to the mooring lines arranged on the leeward side of the third mooring subline 33 and the like. May be. If the structure for stabilizing the weather is not provided, the elastic member groups 50, 60 and 70 may be connected in parallel to all of the first mooring subline 31 to the third mooring subline 33.

  In the mooring balloons 1 to 3, the balloon 10 is moored by the first mooring subline 31 to the third mooring subline 33, but two or four instead of the first mooring subline 31 to the third mooring subline 33 More than one mooring line may be arranged. In this case, the elastic member groups 50, 60, and 70 are connected in parallel to either two or four or more mooring lines. Alternatively, the balloon 10 may be moored on the winch by the first mooring subline 31 to the third mooring subline 33 without having the mooring main line 33.

  In the mooring balloons 1 to 3, a plurality of elastic members having different spring constants are arranged, but each of the plurality of elastic members having different spring constants may be formed of a single elastic member. The elastic member may be used.

  FIG. 22 is a diagram illustrating an example of formation of an elastic member group including a plurality of elastic members having different spring constants. FIG. 22A illustrates a first example, and FIG. 22B illustrates a second example. FIG. 22 (c) shows a third example.

  The elastic member group 81 includes a first elastic member 811 having the smallest spring constant, a second elastic member 812 having the second smallest spring constant, and a third elastic member 813 having the largest spring constant. One end of the first elastic member 811 is connected to the mooring line via a metal ring 814, and the other end of the first elastic member 811 is connected to one end of the second elastic member 812 via a metal ring 815. The other end of the second elastic member 812 is connected to one end of the third elastic member 813 via a metal ring 816, and the other end of the third elastic member 813 is connected to a mooring line (not shown) via a metal ring 817. Is done.

  The elastic member group 82 includes a first elastic member 821, a second elastic member 822, and a third elastic member 833. The second elastic member 822 is formed of a 21st elastic member 8221 and a 22nd elastic member 8222 having the same spring constant as that of the first elastic member 821. The third elastic member 823 is formed of a 31st elastic member 8231, a 32nd elastic member 8232, and a 33rd elastic member 8233 having the same spring constant as that of the first elastic member 821. One end of the first elastic member 821 is connected to the mooring line via the metal ring 824, and the other end of the first elastic member 821 is connected to one end of the second elastic member 822 via the metal ring 825. The other end of the second elastic member 822 is connected to one end of the third elastic member 823 via a metal ring 826, and the other end of the third elastic member 823 is connected to a mooring line (not shown) via a metal ring 827. Is done.

  The elastic member group 83 includes a first elastic member 831, a second elastic member 832, and a third elastic member 833. The second elastic member 832 is formed of a twenty-first elastic member 8321 having the same spring constant as the first elastic member 831 and a twenty-second elastic member 8322 having a spring constant larger than that of the first elastic member 831. The third elastic member 833 includes a thirty-first elastic member 8331 having the same spring constant as that of the first elastic member 831, a thirty-second elastic member 8332 having the same spring constant as that of the twenty-second elastic member 8322, and a spring constant of thirty-second. The 33rd elastic member 8333 larger than the elastic member 8332 is formed. One end of the first elastic member 831 is connected to the mooring line via a metal ring 834, and the other end of the first elastic member 831 is connected to one end of the second elastic member 832 via a metal ring 835. The other end of the second elastic member 832 is connected to one end of the third elastic member 833 via a metal ring 836, and the other end of the third elastic member 833 is connected to a mooring line (not shown) via a metal ring 837. Is done.

1 to 3 Moored balloon 10 Balloon 20 Scoop 31 to 33 Moored sub rope 35 Moored main rope 50, 60, 70 Elastic member group

Claims (2)

A balloon that becomes flat when filled with gas,
A plurality of mooring lines, one end of which is connected to the surface of the balloon;
A plurality of elastic members having different lengths and connected in parallel, and an elastic member group connected to any one of the plurality of mooring lines ,
The mooring balloon characterized in that the length of the plurality of elastic members becomes longer as the spring constant of the plurality of elastic members is larger . A balloon that becomes flat when filled with gas,
A plurality of mooring lines, one end of which is connected to the surface of the balloon;
An elastic member group including a plurality of elastic members having different lengths and connected in series , each end of each of the plurality of elastic members being connected to any one of the plurality of mooring lines ;
The mooring balloon , wherein a length of the mooring line while being connected to both ends of each of the plurality of elastic members is shorter as a spring constant of the plurality of elastic members is larger .

Images